Provided by: castxml_0.6.3-1build2_amd64
NAME
castxml - Create an XML representation of C++ declarations
SYNOPSIS
castxml ( <castxml-opt> | <clang-opt> | <src> )...
DESCRIPTION
Options interpreted by castxml are listed below. Remaining options are given to the internal Clang compiler.
OPTIONS
--castxml-cc-<id> <cc> --castxml-cc-<id> "(" <cc> <cc-opt>... ")" Configure the internal Clang preprocessor and target platform to match that of the given compiler command. The <id> must be "gnu", "msvc", "gnu-c", or "msvc-c". <cc> names a compiler (e.g. "gcc") and <cc-opt>... specifies options that may affect its target (e.g. "-m32"). --castxml-output=<v> Write castxml-format output to <src>.xml or file named by '-o' The <v> specifies the "epic" format version number to generate, and must be '1'. --castxml-gccxml Write gccxml-format output to <src>.xml or file named by '-o' Use this option if you need an output similar to the one generated by the legacy gccxml tool. --castxml-start <name>[,<name>]... Start AST traversal at declaration(s) with the given (qualified) name(s). Multiple names may be specified as a comma-separated list or by repeating the option. -help, --help Print castxml and internal Clang compiler usage information -o <file> Write output to <file> --version Print castxml and internal Clang compiler version information Help for the internal Clang compiler appears below. --------------------------------------------------------------- OVERVIEW: clang LLVM compiler USAGE: clang [options] file... OPTIONS: -### Print (but do not run) the commands to run for this compilation --amdgpu-arch-tool=<value> Tool used for detecting AMD GPU arch in the system. --analyzer-output <value> Static analyzer report output format (html|plist|plist-multi-file|plist-html|sarif|sarif-html|text). --analyze Run the static analyzer -arcmt-migrate-emit-errors Emit ARC errors even if the migrator can fix them -arcmt-migrate-report-output <value> Output path for the plist report -B <prefix> Search $prefix$file for executables, libraries, and data files. If $prefix is a directory, search $prefix/$file -b <arg> Pass -b <arg> to the linker on AIX -CC Include comments from within macros in preprocessed output -cl-denorms-are-zero OpenCL only. Allow denormals to be flushed to zero. -cl-ext=<value> OpenCL only. Enable or disable OpenCL extensions/optional features. The argument is a comma-separated sequence of one or more extension names, each prefixed by '+' or '-'. -cl-fast-relaxed-math OpenCL only. Sets -cl-finite-math-only and -cl-unsafe-math-optimizations, and defines __FAST_RELAXED_MATH__. -cl-finite-math-only OpenCL only. Allow floating-point optimizations that assume arguments and results are not NaNs or +-Inf. -cl-fp32-correctly-rounded-divide-sqrt OpenCL only. Specify that single precision floating-point divide and sqrt used in the program source are correctly rounded. -cl-kernel-arg-info OpenCL only. Generate kernel argument metadata. -cl-mad-enable OpenCL only. Allow use of less precise MAD computations in the generated binary. -cl-no-signed-zeros OpenCL only. Allow use of less precise no signed zeros computations in the generated binary. -cl-no-stdinc OpenCL only. Disables all standard includes containing non-native compiler types and functions. -cl-opt-disable OpenCL only. This option disables all optimizations. By default optimizations are enabled. -cl-single-precision-constant OpenCL only. Treat double precision floating-point constant as single precision constant. -cl-std=<value> OpenCL language standard to compile for. -cl-strict-aliasing OpenCL only. This option is added for compatibility with OpenCL 1.0. -cl-uniform-work-group-size OpenCL only. Defines that the global work-size be a multiple of the work-group size specified to clEnqueueNDRangeKernel -cl-unsafe-math-optimizations OpenCL only. Allow unsafe floating-point optimizations. Also implies -cl-no-signed-zeros and -cl-mad-enable. --config=<file> Specify configuration file --cuda-compile-host-device Compile CUDA code for both host and device (default). Has no effect on non-CUDA compilations. --cuda-device-only Compile CUDA code for device only --cuda-feature=<value> Manually specify the CUDA feature to use --cuda-host-only Compile CUDA code for host only. Has no effect on non-CUDA compilations. --cuda-include-ptx=<value> Include PTX for the following GPU architecture (e.g. sm_35) or 'all'. May be specified more than once. --cuda-noopt-device-debug Enable device-side debug info generation. Disables ptxas optimizations. --cuda-path-ignore-env Ignore environment variables to detect CUDA installation --cuda-path=<value> CUDA installation path -cuid=<value> An ID for compilation unit, which should be the same for the same compilation unit but different for different compilation units. It is used to externalize device-side static variables for single source offloading languages CUDA and HIP so that they can be accessed by the host code of the same compilation unit. -cxx-isystem <directory> Add directory to the C++ SYSTEM include search path -C Include comments in preprocessed output -c Only run preprocess, compile, and assemble steps -darwin-target-variant-triple <value> Specify the darwin target variant triple -darwin-target-variant <value> Generate code for an additional runtime variant of the deployment target -dD Print macro definitions in -E mode in addition to normal output -dependency-dot <value> Filename to write DOT-formatted header dependencies to -dependency-file <value> Filename (or -) to write dependency output to -dI Print include directives in -E mode in addition to normal output -dM Print macro definitions in -E mode instead of normal output -dsym-dir <dir> Directory to output dSYM's (if any) to -dumpdir <dumppfx> Use <dumpfpx> as a prefix to form auxiliary and dump file names -D <macro>=<value> Define <macro> to <value> (or 1 if <value> omitted) -emit-ast Emit Clang AST files for source inputs -emit-interface-stubs Generate Interface Stub Files. -emit-llvm Use the LLVM representation for assembler and object files -emit-merged-ifs Generate Interface Stub Files, emit merged text not binary. --emit-static-lib Enable linker job to emit a static library. --emit-symbol-graph= <value> Generate Extract API information as a side effect of compilation. --end-no-unused-arguments Start emitting warnings for unused driver arguments --extract-api-ignores=<value> Comma separated list of files containing a new line separated list of API symbols to ignore when extracting API information. -extract-api Extract API information -E Only run the preprocessor -faapcs-bitfield-load Follows the AAPCS standard that all volatile bit-field write generates at least one load. (ARM only). -faapcs-bitfield-width Follow the AAPCS standard requirement stating that volatile bit-field width is dictated by the field container type. (ARM only). -faddrsig Emit an address-significance table -falign-loops=<N> N must be a power of two. Align loops to the boundary -faligned-allocation Enable C++17 aligned allocation functions -fallow-editor-placeholders Treat editor placeholders as valid source code -faltivec-src-compat=<value> Source-level compatibility for Altivec vectors (for PowerPC targets). This includes results of vector comparison (scalar for 'xl', vector for 'gcc') as well as behavior when initializing with a scalar (splatting for 'xl', element zero only for 'gcc'). For 'mixed', the compatibility is as 'gcc' for 'vector bool/vector pixel' and as 'xl' for other types. Current default is 'mixed'. -fansi-escape-codes Use ANSI escape codes for diagnostics -fapple-kext Use Apple's kernel extensions ABI -fapple-link-rtlib Force linking the clang builtins runtime library -fapple-pragma-pack Enable Apple gcc-compatible #pragma pack handling -fapplication-extension Restrict code to those available for App Extensions -fapprox-func Allow certain math function calls to be replaced with an approximately equivalent calculation -fasync-exceptions Enable EH Asynchronous exceptions -fbasic-block-sections=<value> Place each function's basic blocks in unique sections (ELF Only) -fbinutils-version=<major.minor> Produced object files can use all ELF features supported by this binutils version and newer. If -fno-integrated-as is specified, the generated assembly will consider GNU as support. 'none' means that all ELF features can be used, regardless of binutils support. Defaults to 2.26. -fblocks Enable the 'blocks' language feature -fborland-extensions Accept non-standard constructs supported by the Borland compiler -fbuild-session-file=<file> Use the last modification time of <file> as the build session timestamp -fbuild-session-timestamp=<time since Epoch in seconds> Time when the current build session started -fbuiltin-module-map Load the clang builtins module map file. -fc++-abi=<value> C++ ABI to use. This will override the target C++ ABI. -fcall-saved-x10 Make the x10 register call-saved (AArch64 only) -fcall-saved-x11 Make the x11 register call-saved (AArch64 only) -fcall-saved-x12 Make the x12 register call-saved (AArch64 only) -fcall-saved-x13 Make the x13 register call-saved (AArch64 only) -fcall-saved-x14 Make the x14 register call-saved (AArch64 only) -fcall-saved-x15 Make the x15 register call-saved (AArch64 only) -fcall-saved-x18 Make the x18 register call-saved (AArch64 only) -fcall-saved-x8 Make the x8 register call-saved (AArch64 only) -fcall-saved-x9 Make the x9 register call-saved (AArch64 only) -fcaret-diagnostics-max-lines=<value> Set the maximum number of source lines to show in a caret diagnostic (0 = no limit). -fcf-protection=<value> Instrument control-flow architecture protection -fcf-protection Enable cf-protection in 'full' mode -fchar8_t Enable C++ builtin type char8_t -fcheck-new Do not assume C++ operator new may not return NULL -fclang-abi-compat=<version> Attempt to match the ABI of Clang <version> -fcolor-diagnostics Enable colors in diagnostics -fcomment-block-commands=<arg> Treat each comma separated argument in <arg> as a documentation comment block command -fcommon Place uninitialized global variables in a common block -fcomplete-member-pointers Require member pointer base types to be complete if they would be significant under the Microsoft ABI -fconstexpr-backtrace-limit=<value> Set the maximum number of entries to print in a constexpr evaluation backtrace (0 = no limit) -fconstexpr-depth=<value> Set the maximum depth of recursive constexpr function calls -fconstexpr-steps=<value> Set the maximum number of steps in constexpr function evaluation -fcoro-aligned-allocation Prefer aligned allocation for C++ Coroutines -fcoroutines Enable support for the C++ Coroutines -fcoverage-compilation-dir=<value> The compilation directory to embed in the coverage mapping. -fcoverage-mapping Generate coverage mapping to enable code coverage analysis -fcoverage-prefix-map=<old>=<new> remap file source paths <old> to <new> in coverage mapping. If there are multiple options, prefix replacement is applied in reverse order starting from the last one -fcrash-diagnostics-dir=<dir> Put crash-report files in <dir> -fcrash-diagnostics=<value> Set level of crash diagnostic reporting, (option: off, compiler, all) -fcrash-diagnostics Enable crash diagnostic reporting (default) -fcs-profile-generate=<directory> Generate instrumented code to collect context sensitive execution counts into <directory>/default.profraw (overridden by LLVM_PROFILE_FILE env var) -fcs-profile-generate Generate instrumented code to collect context sensitive execution counts into default.profraw (overridden by LLVM_PROFILE_FILE env var) -fcuda-approx-transcendentals Use approximate transcendental functions -fcuda-short-ptr Use 32-bit pointers for accessing const/local/shared address spaces -fcxx-exceptions Enable C++ exceptions -fcxx-modules Enable modules for C++ -fdata-sections Place each data in its own section -fdebug-compilation-dir=<value> The compilation directory to embed in the debug info -fdebug-default-version=<value> Default DWARF version to use, if a -g option caused DWARF debug info to be produced -fdebug-info-for-profiling Emit extra debug info to make sample profile more accurate -fdebug-macro Emit macro debug information -fdebug-prefix-map=<old>=<new> For paths in debug info, remap directory <old> to <new>. If multiple options match a path, the last option wins -fdebug-ranges-base-address Use DWARF base address selection entries in .debug_ranges -fdebug-types-section Place debug types in their own section (ELF Only) -fdeclspec Allow __declspec as a keyword -fdelayed-template-parsing Parse templated function definitions at the end of the translation unit -fdelete-null-pointer-checks Treat usage of null pointers as undefined behavior (default) -fdiagnostics-absolute-paths Print absolute paths in diagnostics -fdiagnostics-hotness-threshold=<value> Prevent optimization remarks from being output if they do not have at least this profile count. Use 'auto' to apply the threshold from profile summary -fdiagnostics-misexpect-tolerance=<value> Prevent misexpect diagnostics from being output if the profile counts are within N% of the expected. -fdiagnostics-parseable-fixits Print fix-its in machine parseable form -fdiagnostics-print-source-range-info Print source range spans in numeric form -fdiagnostics-show-hotness Enable profile hotness information in diagnostic line -fdiagnostics-show-note-include-stack Display include stacks for diagnostic notes -fdiagnostics-show-option Print option name with mappable diagnostics -fdiagnostics-show-template-tree Print a template comparison tree for differing templates -fdigraphs Enable alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:' (default) -fdirect-access-external-data Don't use GOT indirection to reference external data symbols -fdiscard-value-names Discard value names in LLVM IR -fdollars-in-identifiers Allow '$' in identifiers -fdriver-only Only run the driver. -fdwarf-exceptions Use DWARF style exceptions -feliminate-unused-debug-types Do not emit debug info for defined but unused types -fembed-bitcode-marker Embed placeholder LLVM IR data as a marker -fembed-bitcode=<option> Embed LLVM bitcode -fembed-bitcode Embed LLVM IR bitcode as data -fembed-offload-object=<value> Embed Offloading device-side binary into host object file as a section. -femit-all-decls Emit all declarations, even if unused -femit-compact-unwind-non-canonical Try emitting Compact-Unwind for non-canonical entries. Maybe overriden by other constraints -femit-dwarf-unwind=<value> When to emit DWARF unwind (EH frame) info -femulated-tls Use emutls functions to access thread_local variables -fenable-matrix Enable matrix data type and related builtin functions -fexceptions Enable support for exception handling -fexcess-precision=<value> Allows control over excess precision on targets where native support for the precision types is not available. By default, excess precision is used to calculate intermediate results following the rules specified in ISO C99. -fexperimental-library Control whether unstable and experimental library features are enabled. This option enables various library features that are either experimental (also known as TSes), or have been but are not stable yet in the selected Standard Library implementation. It is not recommended to use this option in production code, since neither ABI nor API stability are guaranteed. This is intended to provide a preview of features that will ship in the future for experimentation purposes -fexperimental-new-constant-interpreter Enable the experimental new constant interpreter -fexperimental-relative-c++-abi-vtables Use the experimental C++ class ABI for classes with virtual tables -fexperimental-sanitize-metadata-ignorelist=<value> Disable sanitizer metadata for modules and functions that match the provided special case list -fexperimental-sanitize-metadata=<value> Specify the type of metadata to emit for binary analysis sanitizers -fexperimental-strict-floating-point Enables the use of non-default rounding modes and non-default exception handling on targets that are not currently ready. -fextend-arguments=<value> Controls how scalar integer arguments are extended in calls to unprototyped and varargs functions -ffast-math Allow aggressive, lossy floating-point optimizations -ffile-compilation-dir=<value> The compilation directory to embed in the debug info and coverage mapping. -ffile-prefix-map=<value> remap file source paths in debug info, predefined preprocessor macros and __builtin_FILE(). Implies -ffile-reproducible. -ffile-reproducible Use the target's platform-specific path separator character when expanding the __FILE__ macro -ffine-grained-bitfield-accesses Use separate accesses for consecutive bitfield runs with legal widths and alignments. -ffinite-loops Assume all loops are finite. -ffinite-math-only Allow floating-point optimizations that assume arguments and results are not NaNs or +-inf. This defines the \_\_FINITE\_MATH\_ONLY\_\_ preprocessor macro. -ffixed-a0 Reserve the a0 register (M68k only) -ffixed-a1 Reserve the a1 register (M68k only) -ffixed-a2 Reserve the a2 register (M68k only) -ffixed-a3 Reserve the a3 register (M68k only) -ffixed-a4 Reserve the a4 register (M68k only) -ffixed-a5 Reserve the a5 register (M68k only) -ffixed-a6 Reserve the a6 register (M68k only) -ffixed-d0 Reserve the d0 register (M68k only) -ffixed-d1 Reserve the d1 register (M68k only) -ffixed-d2 Reserve the d2 register (M68k only) -ffixed-d3 Reserve the d3 register (M68k only) -ffixed-d4 Reserve the d4 register (M68k only) -ffixed-d5 Reserve the d5 register (M68k only) -ffixed-d6 Reserve the d6 register (M68k only) -ffixed-d7 Reserve the d7 register (M68k only) -ffixed-point Enable fixed point types -ffixed-r19 Reserve register r19 (Hexagon only) -ffixed-r9 Reserve the r9 register (ARM only) -ffixed-x10 Reserve the x10 register (AArch64/RISC-V only) -ffixed-x11 Reserve the x11 register (AArch64/RISC-V only) -ffixed-x12 Reserve the x12 register (AArch64/RISC-V only) -ffixed-x13 Reserve the x13 register (AArch64/RISC-V only) -ffixed-x14 Reserve the x14 register (AArch64/RISC-V only) -ffixed-x15 Reserve the x15 register (AArch64/RISC-V only) -ffixed-x16 Reserve the x16 register (AArch64/RISC-V only) -ffixed-x17 Reserve the x17 register (AArch64/RISC-V only) -ffixed-x18 Reserve the x18 register (AArch64/RISC-V only) -ffixed-x19 Reserve the x19 register (AArch64/RISC-V only) -ffixed-x1 Reserve the x1 register (AArch64/RISC-V only) -ffixed-x20 Reserve the x20 register (AArch64/RISC-V only) -ffixed-x21 Reserve the x21 register (AArch64/RISC-V only) -ffixed-x22 Reserve the x22 register (AArch64/RISC-V only) -ffixed-x23 Reserve the x23 register (AArch64/RISC-V only) -ffixed-x24 Reserve the x24 register (AArch64/RISC-V only) -ffixed-x25 Reserve the x25 register (AArch64/RISC-V only) -ffixed-x26 Reserve the x26 register (AArch64/RISC-V only) -ffixed-x27 Reserve the x27 register (AArch64/RISC-V only) -ffixed-x28 Reserve the x28 register (AArch64/RISC-V only) -ffixed-x29 Reserve the x29 register (AArch64/RISC-V only) -ffixed-x2 Reserve the x2 register (AArch64/RISC-V only) -ffixed-x30 Reserve the x30 register (AArch64/RISC-V only) -ffixed-x31 Reserve the x31 register (AArch64/RISC-V only) -ffixed-x3 Reserve the x3 register (AArch64/RISC-V only) -ffixed-x4 Reserve the x4 register (AArch64/RISC-V only) -ffixed-x5 Reserve the x5 register (AArch64/RISC-V only) -ffixed-x6 Reserve the x6 register (AArch64/RISC-V only) -ffixed-x7 Reserve the x7 register (AArch64/RISC-V only) -ffixed-x8 Reserve the x8 register (AArch64/RISC-V only) -ffixed-x9 Reserve the x9 register (AArch64/RISC-V only) -fforce-dwarf-frame Always emit a debug frame section -fforce-emit-vtables Emits more virtual tables to improve devirtualization -fforce-enable-int128 Enable support for int128_t type -ffp-contract=<value> Form fused FP ops (e.g. FMAs) -ffp-eval-method=<value> Specifies the evaluation method to use for floating-point arithmetic. -ffp-exception-behavior=<value> Specifies the exception behavior of floating-point operations. -ffp-model=<value> Controls the semantics of floating-point calculations. -ffreestanding Assert that the compilation takes place in a freestanding environment -ffuchsia-api-level=<value> Set Fuchsia API level -ffunction-sections Place each function in its own section -fglobal-isel Enables the global instruction selector -fgnu-keywords Allow GNU-extension keywords regardless of language standard -fgnu-runtime Generate output compatible with the standard GNU Objective-C runtime -fgnu89-inline Use the gnu89 inline semantics -fgnuc-version=<value> Sets various macros to claim compatibility with the given GCC version (default is 4.2.1) -fgpu-allow-device-init Allow device side init function in HIP (experimental) -fgpu-default-stream=<value> Specify default stream. The default value is 'legacy'. (HIP only) -fgpu-defer-diag Defer host/device related diagnostic messages for CUDA/HIP -fgpu-flush-denormals-to-zero Flush denormal floating point values to zero in CUDA/HIP device mode. -fgpu-rdc Generate relocatable device code, also known as separate compilation mode -fgpu-sanitize Enable sanitizer for AMDGPU target -fhip-emit-relocatable Compile HIP source to relocatable -fhip-fp32-correctly-rounded-divide-sqrt Specify that single precision floating-point divide and sqrt used in the program source are correctly rounded (HIP device compilation only) -fhip-kernel-arg-name Specify that kernel argument names are preserved (HIP only) -fhip-new-launch-api Use new kernel launching API for HIP -fhonor-infinities Specify that floating-point optimizations are not allowed that assume arguments and results are not +-inf. -fhonor-nans Specify that floating-point optimizations are not allowed that assume arguments and results are not NANs. -fignore-exceptions Enable support for ignoring exception handling constructs -fimplicit-module-maps Implicitly search the file system for module map files. -fincremental-extensions Enable incremental processing extensions such as processingstatements on the global scope. -finline-functions Inline suitable functions -finline-hint-functions Inline functions which are (explicitly or implicitly) marked inline -finline-max-stacksize=<value> Suppress inlining of functions whose stack size exceeds the given value -finput-charset=<value> Specify the default character set for source files -finstrument-function-entry-bare Instrument function entry only, after inlining, without arguments to the instrumentation call -finstrument-functions-after-inlining Like -finstrument-functions, but insert the calls after inlining -finstrument-functions Generate calls to instrument function entry and exit -fintegrated-as Enable the integrated assembler -fintegrated-cc1 Run cc1 in-process -fintegrated-objemitter Use internal machine object code emitter. -fjmc Enable just-my-code debugging -fjump-tables Use jump tables for lowering switches -fkeep-persistent-storage-variables Enable keeping all variables that have a persistent storage duration, including global, static and thread-local variables, to guarantee that they can be directly addressed -fkeep-static-consts Keep static const variables even if unused -flax-vector-conversions=<value> Enable implicit vector bit-casts -flto-jobs=<value> Controls the backend parallelism of -flto=thin (default of 0 means the number of threads will be derived from the number of CPUs detected) -flto=auto Enable LTO in 'full' mode -flto=jobserver Enable LTO in 'full' mode -flto=<value> Set LTO mode -flto Enable LTO in 'full' mode -fmacro-backtrace-limit=<value> Set the maximum number of entries to print in a macro expansion backtrace (0 = no limit) -fmacro-prefix-map=<value> remap file source paths in predefined preprocessor macros and __builtin_FILE(). Implies -ffile-reproducible. -fmath-errno Require math functions to indicate errors by setting errno -fmax-tokens=<value> Max total number of preprocessed tokens for -Wmax-tokens. -fmax-type-align=<value> Specify the maximum alignment to enforce on pointers lacking an explicit alignment -fmemory-profile-use=<pathname> Use memory profile for profile-guided memory optimization -fmemory-profile=<directory> Enable heap memory profiling and dump results into <directory> -fmemory-profile Enable heap memory profiling -fmerge-all-constants Allow merging of constants -fmessage-length=<value> Format message diagnostics so that they fit within N columns -fminimize-whitespace Ignore the whitespace from the input file when emitting preprocessor output. It will only contain whitespace when necessary, e.g. to keep two minus signs from merging into to an increment operator. Useful with the -P option to normalize whitespace such that two files with only formatting changes are equal. Only valid with -E on C-like inputs and incompatible with -traditional-cpp. -fmodule-file=[<name>=]<file> Specify the mapping of module name to precompiled module file, or load a module file if name is omitted. -fmodule-header=<kind> Build a C++20 Header Unit from a header that should be found in the user (fmodule-header=user) or system (fmodule-header=system) search path. -fmodule-header Build a C++20 Header Unit from a header. -fmodule-map-file=<file> Load this module map file -fmodule-name=<name> Specify the name of the module to build -fmodule-output=<value> Save intermediate module file results when compiling a standard C++ module unit. -fmodule-output Save intermediate module file results when compiling a standard C++ module unit. -fmodules-cache-path=<directory> Specify the module cache path -fmodules-decluse Require declaration of modules used within a module -fmodules-disable-diagnostic-validation Disable validation of the diagnostic options when loading the module -fmodules-ignore-macro=<value> Ignore the definition of the given macro when building and loading modules -fmodules-prune-after=<seconds> Specify the interval (in seconds) after which a module file will be considered unused -fmodules-prune-interval=<seconds> Specify the interval (in seconds) between attempts to prune the module cache -fmodules-search-all Search even non-imported modules to resolve references -fmodules-strict-decluse Like -fmodules-decluse but requires all headers to be in modules -fmodules-user-build-path <directory> Specify the module user build path -fmodules-validate-input-files-content Validate PCM input files based on content if mtime differs -fmodules-validate-once-per-build-session Don't verify input files for the modules if the module has been successfully validated or loaded during this build session -fmodules-validate-system-headers Validate the system headers that a module depends on when loading the module -fmodules Enable the 'modules' language feature -fms-compatibility-version=<value> Dot-separated value representing the Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default)) -fms-compatibility Enable full Microsoft Visual C++ compatibility -fms-extensions Accept some non-standard constructs supported by the Microsoft compiler -fms-hotpatch Ensure that all functions can be hotpatched at runtime -fms-runtime-lib=<value> Select Windows run-time library -fmsc-version=<value> Microsoft compiler version number to report in _MSC_VER (0 = don't define it (default)) -fnew-alignment=<align> Specifies the largest alignment guaranteed by '::operator new(size_t)' -fnew-infallible Enable treating throwing global C++ operator new as always returning valid memory (annotates with __attribute__((returns_nonnull)) and throw()). This is detectable in source. -fno-aapcs-bitfield-width Do not follow the AAPCS standard requirement stating that volatile bit-field width is dictated by the field container type. (ARM only). -fno-access-control Disable C++ access control -fno-addrsig Don't emit an address-significance table -fno-assume-sane-operator-new Don't assume that C++'s global operator new can't alias any pointer -fno-assume-unique-vtables Disable optimizations based on vtable pointer identity -fno-autolink Disable generation of linker directives for automatic library linking -fno-builtin-<value> Disable implicit builtin knowledge of a specific function -fno-builtin Disable implicit builtin knowledge of functions -fno-c++-static-destructors Disable C++ static destructor registration -fno-char8_t Disable C++ builtin type char8_t -fno-color-diagnostics Disable colors in diagnostics -fno-common Compile common globals like normal definitions -fno-complete-member-pointers Do not require member pointer base types to be complete if they would be significant under the Microsoft ABI -fno-constant-cfstrings Disable creation of CodeFoundation-type constant strings -fno-convergent-functions Assume all functions may be convergent. -fno-coverage-mapping Disable code coverage analysis -fno-crash-diagnostics Disable auto-generation of preprocessed source files and a script for reproduction during a clang crash -fno-cuda-approx-transcendentals Don't use approximate transcendental functions -fno-cxx-modules Disable modules for C++ -fno-debug-macro Do not emit macro debug information -fno-declspec Disallow __declspec as a keyword -fno-delayed-template-parsing Disable delayed template parsing -fno-delete-null-pointer-checks Do not treat usage of null pointers as undefined behavior -fno-diagnostics-fixit-info Do not include fixit information in diagnostics -fno-diagnostics-show-line-numbers Show line numbers in diagnostic code snippets -fno-digraphs Disallow alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:' -fno-direct-access-external-data Use GOT indirection to reference external data symbols -fno-discard-value-names Do not discard value names in LLVM IR -fno-dollars-in-identifiers Disallow '$' in identifiers -fno-elide-constructors Disable C++ copy constructor elision -fno-elide-type Do not elide types when printing diagnostics -fno-eliminate-unused-debug-types Emit debug info for defined but unused types -fno-exceptions Disable support for exception handling -fno-experimental-relative-c++-abi-vtables Do not use the experimental C++ class ABI for classes with virtual tables -fno-experimental-sanitize-metadata=<value> Disable emitting metadata for binary analysis sanitizers -fno-file-reproducible Use the host's platform-specific path separator character when expanding the __FILE__ macro -fno-fine-grained-bitfield-accesses Use large-integer access for consecutive bitfield runs. -fno-finite-loops Do not assume that any loop is finite. -fno-fixed-point Disable fixed point types -fno-force-enable-int128 Disable support for int128_t type -fno-global-isel Disables the global instruction selector -fno-gnu-inline-asm Disable GNU style inline asm -fno-gpu-allow-device-init Don't allow device side init function in HIP (experimental) -fno-gpu-defer-diag Don't defer host/device related diagnostic messages for CUDA/HIP -fno-hip-emit-relocatable Do not override toolchain to compile HIP source to relocatable -fno-hip-fp32-correctly-rounded-divide-sqrt Don't specify that single precision floating-point divide and sqrt used in the program source are correctly rounded (HIP device compilation only) -fno-hip-kernel-arg-name Don't specify that kernel argument names are preserved (HIP only) -fno-hip-new-launch-api Don't use new kernel launching API for HIP -fno-integrated-as Disable the integrated assembler -fno-integrated-cc1 Spawn a separate process for each cc1 -fno-integrated-objemitter Use external machine object code emitter. -fno-jump-tables Do not use jump tables for lowering switches -fno-keep-persistent-storage-variables Disable keeping all variables that have a persistent storage duration, including global, static and thread-local variables, to guarantee that they can be directly addressed -fno-keep-static-consts Don't keep static const variables even if unused -fno-knr-functions Disable support for K&R C function declarations -fno-lto Disable LTO mode (default) -fno-memory-profile Disable heap memory profiling -fno-merge-all-constants Disallow merging of constants -fno-modules-check-relocated<value> Skip checks for relocated modules when loading PCM files -fno-modules-validate-textual-header-includes Do not enforce -fmodules-decluse and private header restrictions for textual headers. This flag will be removed in a future Clang release. -fno-new-infallible Disable treating throwing global C++ operator new as always returning valid memory (annotates with __attribute__((returns_nonnull)) and throw()). This is detectable in source. -fno-objc-infer-related-result-type do not infer Objective-C related result type based on method family -fno-offload-lto Disable LTO mode (default) for offload compilation -fno-openmp-extensions Disable all Clang extensions for OpenMP directives and clauses -fno-operator-names Do not treat C++ operator name keywords as synonyms for operators -fno-optimize-sibling-calls Disable tail call optimization, keeping the call stack accurate -fno-pch-codegen Do not generate code for uses of this PCH that assumes an explicit object file will be built for the PCH -fno-pch-debuginfo Do not generate debug info for types in an object file built from this PCH and do not generate them elsewhere -fno-plt Use GOT indirection instead of PLT to make external function calls (x86 only) -fno-preserve-as-comments Do not preserve comments in inline assembly -fno-profile-generate Disable generation of profile instrumentation. -fno-profile-instr-generate Disable generation of profile instrumentation. -fno-profile-instr-use Disable using instrumentation data for profile-guided optimization -fno-pseudo-probe-for-profiling Do not emit pseudo probes for sample profiling -fno-register-global-dtors-with-atexit Don't use atexit or __cxa_atexit to register global destructors -fno-rtlib-add-rpath Do not add -rpath with architecture-specific resource directory to the linker flags. When --hip-link is specified, do not add -rpath with HIP runtime library directory to the linker flags -fno-rtti-data Disable generation of RTTI data -fno-rtti Disable generation of rtti information -fno-sanitize-address-globals-dead-stripping Disable linker dead stripping of globals in AddressSanitizer -fno-sanitize-address-outline-instrumentation Use default code inlining logic for the address sanitizer -fno-sanitize-address-poison-custom-array-cookie Disable poisoning array cookies when using custom operator new[] in AddressSanitizer -fno-sanitize-address-use-after-scope Disable use-after-scope detection in AddressSanitizer -fno-sanitize-address-use-odr-indicator Disable ODR indicator globals -fno-sanitize-cfi-canonical-jump-tables Do not make the jump table addresses canonical in the symbol table -fno-sanitize-cfi-cross-dso Disable control flow integrity (CFI) checks for cross-DSO calls. -fno-sanitize-coverage=<value> Disable features of coverage instrumentation for Sanitizers -fno-sanitize-hwaddress-experimental-aliasing Disable aliasing mode in HWAddressSanitizer -fno-sanitize-ignorelist Don't use ignorelist file for sanitizers -fno-sanitize-memory-param-retval Disable detection of uninitialized parameters and return values -fno-sanitize-memory-track-origins Disable origins tracking in MemorySanitizer -fno-sanitize-memory-use-after-dtor Disable use-after-destroy detection in MemorySanitizer -fno-sanitize-recover=<value> Disable recovery for specified sanitizers -fno-sanitize-stable-abi Conventional ABI instrumentation for sanitizer runtime. Default: Conventional -fno-sanitize-stats Disable sanitizer statistics gathering. -fno-sanitize-thread-atomics Disable atomic operations instrumentation in ThreadSanitizer -fno-sanitize-thread-func-entry-exit Disable function entry/exit instrumentation in ThreadSanitizer -fno-sanitize-thread-memory-access Disable memory access instrumentation in ThreadSanitizer -fno-sanitize-trap=<value> Disable trapping for specified sanitizers -fno-sanitize-trap Disable trapping for all sanitizers -fno-short-wchar Force wchar_t to be an unsigned int -fno-show-column Do not include column number on diagnostics -fno-show-source-location Do not include source location information with diagnostics -fno-signed-char char is unsigned -fno-signed-zeros Allow optimizations that ignore the sign of floating point zeros -fno-spell-checking Disable spell-checking -fno-split-machine-functions Disable late function splitting using profile information (x86 ELF) -fno-split-stack Wouldn't use segmented stack -fno-stack-clash-protection Disable stack clash protection -fno-stack-protector Disable the use of stack protectors -fno-standalone-debug Limit debug information produced to reduce size of debug binary -fno-strict-float-cast-overflow Relax language rules and try to match the behavior of the target's native float-to-int conversion instructions -fno-strict-return Don't treat control flow paths that fall off the end of a non-void function as unreachable -fno-sycl Disables SYCL kernels compilation for device -fno-temp-file Directly create compilation output files. This may lead to incorrect incremental builds if the compiler crashes -fno-threadsafe-statics Do not emit code to make initialization of local statics thread safe -fno-trigraphs Do not process trigraph sequences -fno-unified-lto Use distinct LTO pipelines -fno-unique-section-names Don't use unique names for text and data sections -fno-unroll-loops Turn off loop unroller -fno-use-cxa-atexit Don't use __cxa_atexit for calling destructors -fno-use-init-array Use .ctors/.dtors instead of .init_array/.fini_array -fno-visibility-inlines-hidden-static-local-var Disables -fvisibility-inlines-hidden-static-local-var (this is the default on non-darwin targets) -fno-xray-function-index Omit function index section at the expense of single-function patching performance -fno-zero-initialized-in-bss Don't place zero initialized data in BSS -fobjc-arc-exceptions Use EH-safe code when synthesizing retains and releases in -fobjc-arc -fobjc-arc Synthesize retain and release calls for Objective-C pointers -fobjc-disable-direct-methods-for-testing Ignore attribute objc_direct so that direct methods can be tested -fobjc-encode-cxx-class-template-spec Fully encode c++ class template specialization -fobjc-exceptions Enable Objective-C exceptions -fobjc-runtime=<value> Specify the target Objective-C runtime kind and version -fobjc-weak Enable ARC-style weak references in Objective-C -foffload-lto=<value> Set LTO mode for offload compilation -foffload-lto Enable LTO in 'full' mode for offload compilation -fomit-frame-pointer Omit the frame pointer from functions that don't need it. Some stack unwinding cases, such as profilers and sanitizers, may prefer specifying -fno-omit-frame-pointer. On many targets, -O1 and higher omit the frame pointer by default. -m[no-]omit-leaf-frame-pointer takes precedence for leaf functions -fopenmp-extensions Enable all Clang extensions for OpenMP directives and clauses -fopenmp-offload-mandatory Do not create a host fallback if offloading to the device fails. -fopenmp-simd Emit OpenMP code only for SIMD-based constructs. -fopenmp-target-debug Enable debugging in the OpenMP offloading device RTL -fopenmp-target-jit Emit code that can be JIT compiled for OpenMP offloading. Implies -foffload-lto=full -fopenmp-targets=<value> Specify comma-separated list of triples OpenMP offloading targets to be supported -fopenmp-version=<value> Set OpenMP version (e.g. 45 for OpenMP 4.5, 50 for OpenMP 5.0). Default value is 50 for Clang and 11 for Flang -fopenmp Parse OpenMP pragmas and generate parallel code. -foperator-arrow-depth=<value> Maximum number of 'operator->'s to call for a member access -foptimization-record-file=<file> Specify the output name of the file containing the optimization remarks. Implies -fsave-optimization-record. On Darwin platforms, this cannot be used with multiple -arch <arch> options. -foptimization-record-passes=<regex> Only include passes which match a specified regular expression in the generated optimization record (by default, include all passes) -forder-file-instrumentation Generate instrumented code to collect order file into default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env var) -fpack-struct=<value> Specify the default maximum struct packing alignment -fpascal-strings Recognize and construct Pascal-style string literals -fpass-plugin=<dsopath> Load pass plugin from a dynamic shared object file (only with new pass manager). -fpatchable-function-entry=<N,M> Generate M NOPs before function entry and N-M NOPs after function entry -fpcc-struct-return Override the default ABI to return all structs on the stack -fpch-codegen Generate code for uses of this PCH that assumes an explicit object file will be built for the PCH -fpch-debuginfo Generate debug info for types in an object file built from this PCH and do not generate them elsewhere -fpch-instantiate-templates Instantiate templates already while building a PCH -fpch-validate-input-files-content Validate PCH input files based on content if mtime differs -fplugin-arg-<name>-<arg> Pass <arg> to plugin <name> -fplugin=<dsopath> Load the named plugin (dynamic shared object) -fprebuilt-implicit-modules Look up implicit modules in the prebuilt module path -fprebuilt-module-path=<directory> Specify the prebuilt module path -fproc-stat-report=<value> Save subprocess statistics to the given file -fproc-stat-report<value> Print subprocess statistics -fprofile-arcs Instrument code to produce gcov data files (*.gcda) -fprofile-exclude-files=<value> Instrument only functions from files where names don't match all the regexes separated by a semi-colon -fprofile-filter-files=<value> Instrument only functions from files where names match any regex separated by a semi-colon -fprofile-function-groups=<N> Partition functions into N groups and select only functions in group i to be instrumented using -fprofile-selected-function-group -fprofile-generate=<directory> Generate instrumented code to collect execution counts into <directory>/default.profraw (overridden by LLVM_PROFILE_FILE env var) -fprofile-generate Generate instrumented code to collect execution counts into default.profraw (overridden by LLVM_PROFILE_FILE env var) -fprofile-instr-generate=<file> Generate instrumented code to collect execution counts into <file> (overridden by LLVM_PROFILE_FILE env var) -fprofile-instr-generate Generate instrumented code to collect execution counts into default.profraw file (overridden by '=' form of option or LLVM_PROFILE_FILE env var) -fprofile-instr-use=<value> Use instrumentation data for profile-guided optimization -fprofile-list=<value> Filename defining the list of functions/files to instrument. The file uses the sanitizer special case list format. -fprofile-remapping-file=<file> Use the remappings described in <file> to match the profile data against names in the program -fprofile-sample-accurate Specifies that the sample profile is accurate -fprofile-sample-use=<value> Enable sample-based profile guided optimizations -fprofile-selected-function-group=<i> Partition functions into N groups using -fprofile-function-groups and select only functions in group i to be instrumented. The valid range is 0 to N-1 inclusive -fprofile-update=<method> Set update method of profile counters -fprofile-use=<pathname> Use instrumentation data for profile-guided optimization. If pathname is a directory, it reads from <pathname>/default.profdata. Otherwise, it reads from file <pathname>. -fprotect-parens Determines whether the optimizer honors parentheses when floating-point expressions are evaluated -fpseudo-probe-for-profiling Emit pseudo probes for sample profiling -frandomize-layout-seed-file=<file> File holding the seed used by the randomize structure layout feature -frandomize-layout-seed=<seed> The seed used by the randomize structure layout feature -freciprocal-math Allow division operations to be reassociated -freg-struct-return Override the default ABI to return small structs in registers -fregister-global-dtors-with-atexit Use atexit or __cxa_atexit to register global destructors -frelaxed-template-template-args Enable C++17 relaxed template template argument matching -freroll-loops Turn on loop reroller -fropi Generate read-only position independent code (ARM only) -frtlib-add-rpath Add -rpath with architecture-specific resource directory to the linker flags. When --hip-link is specified, also add -rpath with HIP runtime library directory to the linker flags -frwpi Generate read-write position independent code (ARM only) -fsafe-buffer-usage-suggestions Display suggestions to update code associated with -Wunsafe-buffer-usage warnings -fsample-profile-use-profi Use profi to infer block and edge counts -fsanitize-address-destructor=<value> Set the kind of module destructors emitted by AddressSanitizer instrumentation. These destructors are emitted to unregister instrumented global variables when code is unloaded (e.g. via `dlclose()`). -fsanitize-address-field-padding=<value> Level of field padding for AddressSanitizer -fsanitize-address-globals-dead-stripping Enable linker dead stripping of globals in AddressSanitizer -fsanitize-address-outline-instrumentation Always generate function calls for address sanitizer instrumentation -fsanitize-address-poison-custom-array-cookie Enable poisoning array cookies when using custom operator new[] in AddressSanitizer -fsanitize-address-use-after-return=<mode> Select the mode of detecting stack use-after-return in AddressSanitizer -fsanitize-address-use-after-scope Enable use-after-scope detection in AddressSanitizer -fsanitize-address-use-odr-indicator Enable ODR indicator globals to avoid false ODR violation reports in partially sanitized programs at the cost of an increase in binary size -fsanitize-blacklist=<value> Alias for -fsanitize-ignorelist= -fsanitize-cfi-canonical-jump-tables Make the jump table addresses canonical in the symbol table -fsanitize-cfi-cross-dso Enable control flow integrity (CFI) checks for cross-DSO calls. -fsanitize-cfi-icall-experimental-normalize-integers Normalize integers in CFI indirect call type signature checks -fsanitize-cfi-icall-generalize-pointers Generalize pointers in CFI indirect call type signature checks -fsanitize-coverage-allowlist=<value> Restrict sanitizer coverage instrumentation exclusively to modules and functions that match the provided special case list, except the blocked ones -fsanitize-coverage-ignorelist=<value> Disable sanitizer coverage instrumentation for modules and functions that match the provided special case list, even the allowed ones -fsanitize-coverage=<value> Specify the type of coverage instrumentation for Sanitizers -fsanitize-hwaddress-abi=<value> Select the HWAddressSanitizer ABI to target (interceptor or platform, default interceptor). This option is currently unused. -fsanitize-hwaddress-experimental-aliasing Enable aliasing mode in HWAddressSanitizer -fsanitize-ignorelist=<value> Path to ignorelist file for sanitizers -fsanitize-memory-param-retval Enable detection of uninitialized parameters and return values -fsanitize-memory-track-origins=<value> Enable origins tracking in MemorySanitizer -fsanitize-memory-track-origins Enable origins tracking in MemorySanitizer -fsanitize-memory-use-after-dtor Enable use-after-destroy detection in MemorySanitizer -fsanitize-memtag-mode=<value> Set default MTE mode to 'sync' (default) or 'async' -fsanitize-recover=<value> Enable recovery for specified sanitizers -fsanitize-stable-abi Stable ABI instrumentation for sanitizer runtime. Default: Conventional -fsanitize-stats Enable sanitizer statistics gathering. -fsanitize-system-ignorelist=<value> Path to system ignorelist file for sanitizers -fsanitize-thread-atomics Enable atomic operations instrumentation in ThreadSanitizer (default) -fsanitize-thread-func-entry-exit Enable function entry/exit instrumentation in ThreadSanitizer (default) -fsanitize-thread-memory-access Enable memory access instrumentation in ThreadSanitizer (default) -fsanitize-trap=<value> Enable trapping for specified sanitizers -fsanitize-trap Enable trapping for all sanitizers -fsanitize-undefined-strip-path-components=<number> Strip (or keep only, if negative) a given number of path components when emitting check metadata. -fsanitize=<check> Turn on runtime checks for various forms of undefined or suspicious behavior. See user manual for available checks -fsave-optimization-record=<format> Generate an optimization record file in a specific format -fsave-optimization-record Generate a YAML optimization record file -fseh-exceptions Use SEH style exceptions -fshort-enums Allocate to an enum type only as many bytes as it needs for the declared range of possible values -fshort-wchar Force wchar_t to be a short unsigned int -fshow-overloads=<value> Which overload candidates to show when overload resolution fails. Defaults to 'all' -fshow-skipped-includes Show skipped includes in -H output. -fsigned-char char is signed -fsized-deallocation Enable C++14 sized global deallocation functions -fsjlj-exceptions Use SjLj style exceptions -fslp-vectorize Enable the superword-level parallelism vectorization passes -fspell-checking-limit=<value> Set the maximum number of times to perform spell checking on unrecognized identifiers (0 = no limit) -fsplit-dwarf-inlining Provide minimal debug info in the object/executable to facilitate online symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF -fsplit-lto-unit Enables splitting of the LTO unit -fsplit-machine-functions Enable late function splitting using profile information (x86 ELF) -fsplit-stack Use segmented stack -fstack-clash-protection Enable stack clash protection -fstack-protector-all Enable stack protectors for all functions -fstack-protector-strong Enable stack protectors for some functions vulnerable to stack smashing. Compared to -fstack-protector, this uses a stronger heuristic that includes functions containing arrays of any size (and any type), as well as any calls to alloca or the taking of an address from a local variable -fstack-protector Enable stack protectors for some functions vulnerable to stack smashing. This uses a loose heuristic which considers functions vulnerable if they contain a char (or 8bit integer) array or constant sized calls to alloca , which are of greater size than ssp-buffer-size (default: 8 bytes). All variable sized calls to alloca are considered vulnerable. A function with a stack protector has a guard value added to the stack frame that is checked on function exit. The guard value must be positioned in the stack frame such that a buffer overflow from a vulnerable variable will overwrite the guard value before overwriting the function's return address. The reference stack guard value is stored in a global variable. -fstack-size-section Emit section containing metadata on function stack sizes -fstack-usage Emit .su file containing information on function stack sizes -fstandalone-debug Emit full debug info for all types used by the program -fstrict-enums Enable optimizations based on the strict definition of an enum's value range -fstrict-flex-arrays=<n> Enable optimizations based on the strict definition of flexible arrays -fstrict-float-cast-overflow Assume that overflowing float-to-int casts are undefined (default) -fstrict-vtable-pointers Enable optimizations based on the strict rules for overwriting polymorphic C++ objects -fswift-async-fp=<option> Control emission of Swift async extended frame info -fsycl Enables SYCL kernels compilation for device -fsyntax-only Run the preprocessor, parser and semantic analysis stages -fsystem-module Build this module as a system module. Only used with -emit-module -ftemplate-backtrace-limit=<value> Set the maximum number of entries to print in a template instantiation backtrace (0 = no limit) -ftemplate-depth=<value> Set the maximum depth of recursive template instantiation -ftest-coverage Produce gcov notes files (*.gcno) -fthin-link-bitcode=<value> Write minimized bitcode to <file> for the ThinLTO thin link only -fthinlto-index=<value> Perform ThinLTO importing using provided function summary index -ftime-report=<value> (For new pass manager) 'per-pass': one report for each pass; 'per-pass-run': one report for each pass invocation -ftime-trace-granularity=<value> Minimum time granularity (in microseconds) traced by time profiler -ftime-trace=<value> Similar to -ftime-trace. Specify the JSON file or a directory which will contain the JSON file -ftime-trace Turn on time profiler. Generates JSON file based on output filename. -ftrap-function=<value> Issue call to specified function rather than a trap instruction -ftrapv-handler=<function name> Specify the function to be called on overflow -ftrapv Trap on integer overflow -ftrigraphs Process trigraph sequences -ftrivial-auto-var-init-stop-after=<value> Stop initializing trivial automatic stack variables after the specified number of instances -ftrivial-auto-var-init=<value> Initialize trivial automatic stack variables. Defaults to 'uninitialized' -funified-lto Use the unified LTO pipeline -funique-basic-block-section-names Use unique names for basic block sections (ELF Only) -funique-internal-linkage-names Uniqueify Internal Linkage Symbol Names by appending the MD5 hash of the module path -funroll-loops Turn on loop unroller -funsafe-math-optimizations Allow unsafe floating-point math optimizations which may decrease precision -fuse-cuid=<value> Method to generate ID's for compilation units for single source offloading languages CUDA and HIP: 'hash' (ID's generated by hashing file path and command line options) | 'random' (ID's generated as random numbers) | 'none' (disabled). Default is 'hash'. This option will be overridden by option '-cuid=[ID]' if it is specified. -fuse-line-directives Use #line in preprocessed output -fvalidate-ast-input-files-content Compute and store the hash of input files used to build an AST. Files with mismatching mtime's are considered valid if both contents is identical -fveclib=<value> Use the given vector functions library -fvectorize Enable the loop vectorization passes -fverbose-asm Generate verbose assembly output -fvirtual-function-elimination Enables dead virtual function elimination optimization. Requires -flto=full -fvisibility-dllexport=<value> The visibility for dllexport definitions [-fvisibility-from-dllstorageclass] -fvisibility-externs-dllimport=<value> The visibility for dllimport external declarations [-fvisibility-from-dllstorageclass] -fvisibility-externs-nodllstorageclass=<value> The visibility for external declarations without an explicit DLL dllstorageclass [-fvisibility-from-dllstorageclass] -fvisibility-from-dllstorageclass Set the visibility of symbols in the generated code from their DLL storage class -fvisibility-global-new-delete-hidden Give global C++ operator new and delete declarations hidden visibility -fvisibility-inlines-hidden-static-local-var When -fvisibility-inlines-hidden is enabled, static variables in inline C++ member functions will also be given hidden visibility by default -fvisibility-inlines-hidden Give inline C++ member functions hidden visibility by default -fvisibility-ms-compat Give global types 'default' visibility and global functions and variables 'hidden' visibility by default -fvisibility-nodllstorageclass=<value> The visibility for definitions without an explicit DLL export class [-fvisibility-from-dllstorageclass] -fvisibility=<value> Set the default symbol visibility for all global definitions -fwasm-exceptions Use WebAssembly style exceptions -fwhole-program-vtables Enables whole-program vtable optimization. Requires -flto -fwrapv Treat signed integer overflow as two's complement -fwritable-strings Store string literals as writable data -fxl-pragma-pack Enable IBM XL #pragma pack handling -fxray-always-emit-customevents Always emit __xray_customevent(...) calls even if the containing function is not always instrumented -fxray-always-emit-typedevents Always emit __xray_typedevent(...) calls even if the containing function is not always instrumented -fxray-always-instrument=<value> DEPRECATED: Filename defining the whitelist for imbuing the 'always instrument' XRay attribute. -fxray-attr-list=<value> Filename defining the list of functions/types for imbuing XRay attributes. -fxray-function-groups=<value> Only instrument 1 of N groups -fxray-ignore-loops Don't instrument functions with loops unless they also meet the minimum function size -fxray-instruction-threshold=<value> Sets the minimum function size to instrument with XRay -fxray-instrumentation-bundle=<value> Select which XRay instrumentation points to emit. Options: all, none, function-entry, function-exit, function, custom. Default is 'all'. 'function' includes both 'function-entry' and 'function-exit'. -fxray-instrument Generate XRay instrumentation sleds on function entry and exit -fxray-link-deps Link XRay runtime library when -fxray-instrument is specified (default) -fxray-modes=<value> List of modes to link in by default into XRay instrumented binaries. -fxray-never-instrument=<value> DEPRECATED: Filename defining the whitelist for imbuing the 'never instrument' XRay attribute. -fxray-selected-function-group=<value> When using -fxray-function-groups, select which group of functions to instrument. Valid range is 0 to fxray-function-groups - 1 -fzero-call-used-regs=<value> Clear call-used registers upon function return (AArch64/x86 only) -fzvector Enable System z vector language extension -F <value> Add directory to framework include search path --gcc-install-dir=<value> Use GCC installation in the specified directory. The directory ends with path components like 'lib{,32,64}/gcc{,-cross}/$triple/$version'. Note: executables (e.g. ld) used by the compiler are not overridden by the selected GCC installation --gcc-toolchain=<value> Specify a directory where Clang can find 'include' and 'lib{,32,64}/gcc{,-cross}/$triple/$version'. Clang will use the GCC installation with the largest version -gcodeview-command-line Emit compiler path and command line into CodeView debug information -gcodeview-ghash Emit type record hashes in a .debug$H section -gcodeview Generate CodeView debug information -gdwarf-2 Generate source-level debug information with dwarf version 2 -gdwarf-3 Generate source-level debug information with dwarf version 3 -gdwarf-4 Generate source-level debug information with dwarf version 4 -gdwarf-5 Generate source-level debug information with dwarf version 5 -gdwarf32 Enables DWARF32 format for ELF binaries, if debug information emission is enabled. -gdwarf64 Enables DWARF64 format for ELF binaries, if debug information emission is enabled. -gdwarf Generate source-level debug information with the default dwarf version -gembed-source Embed source text in DWARF debug sections -gen-reproducer=<value> Emit reproducer on (option: off, crash (default), error, always) -gline-directives-only Emit debug line info directives only -gline-tables-only Emit debug line number tables only -gmodules Generate debug info with external references to clang modules or precompiled headers -gno-codeview-command-line Don't emit compiler path and command line into CodeView debug information -gno-embed-source Restore the default behavior of not embedding source text in DWARF debug sections -gno-inline-line-tables Don't emit inline line tables. --gpu-bundle-output Bundle output files of HIP device compilation --gpu-instrument-lib=<value> Instrument device library for HIP, which is a LLVM bitcode containing __cyg_profile_func_enter and __cyg_profile_func_exit --gpu-max-threads-per-block=<value> Default max threads per block for kernel launch bounds for HIP -gsplit-dwarf=<value> Set DWARF fission mode -gstrict-dwarf Restrict DWARF features to those defined in the specified version, avoiding features from later versions. -gz=<value> DWARF debug sections compression type -G <size> Put objects of at most <size> bytes into small data section (MIPS / Hexagon) -g Generate source-level debug information --help-hidden Display help for hidden options -help Display available options --hip-device-lib=<value> HIP device library --hip-link Link clang-offload-bundler bundles for HIP --hip-path=<value> HIP runtime installation path, used for finding HIP version and adding HIP include path. --hip-version=<value> HIP version in the format of major.minor.patch --hipspv-pass-plugin=<dsopath> path to a pass plugin for HIP to SPIR-V passes. -H Show header includes and nesting depth -I- Restrict all prior -I flags to double-quoted inclusion and remove current directory from include path -ibuiltininc Enable builtin #include directories even when -nostdinc is used before or after -ibuiltininc. Using -nobuiltininc after the option disables it -idirafter <value> Add directory to AFTER include search path -iframeworkwithsysroot <directory> Add directory to SYSTEM framework search path, absolute paths are relative to -isysroot -iframework <value> Add directory to SYSTEM framework search path -imacros <file> Include macros from file before parsing -include-pch <file> Include precompiled header file -include <file> Include file before parsing -index-header-map Make the next included directory (-I or -F) an indexer header map -iprefix <dir> Set the -iwithprefix/-iwithprefixbefore prefix -iquote <directory> Add directory to QUOTE include search path -isysroot <dir> Set the system root directory (usually /) -isystem-after <directory> Add directory to end of the SYSTEM include search path -isystem <directory> Add directory to SYSTEM include search path -ivfsoverlay <value> Overlay the virtual filesystem described by file over the real file system -iwithprefixbefore <dir> Set directory to include search path with prefix -iwithprefix <dir> Set directory to SYSTEM include search path with prefix -iwithsysroot <directory> Add directory to SYSTEM include search path, absolute paths are relative to -isysroot -I <dir> Add directory to the end of the list of include search paths --libomptarget-amdgcn-bc-path=<value> Path to libomptarget-amdgcn bitcode library --libomptarget-amdgpu-bc-path=<value> Path to libomptarget-amdgcn bitcode library --libomptarget-nvptx-bc-path=<value> Path to libomptarget-nvptx bitcode library -L <dir> Add directory to library search path -mabi=quadword-atomics Enable quadword atomics ABI on AIX (AIX PPC64 only). Uses lqarx/stqcx. instructions. -mabicalls Enable SVR4-style position-independent code (Mips only) -maix-struct-return Return all structs in memory (PPC32 only) -malign-branch-boundary=<value> Specify the boundary's size to align branches -malign-branch=<value> Specify types of branches to align -malign-double Align doubles to two words in structs (x86 only) -maltivec Enable AltiVec vector initializer syntax -mamdgpu-ieee Sets the IEEE bit in the expected default floating point mode register. Floating point opcodes that support exception flag gathering quiet and propagate signaling NaN inputs per IEEE 754-2008. This option changes the ABI. (AMDGPU only) -march=<value> For a list of available architectures for the target use '-mcpu=help' -mbackchain Link stack frames through backchain on System Z -mbranch-protection=<value> Enforce targets of indirect branches and function returns -mbranches-within-32B-boundaries Align selected branches (fused, jcc, jmp) within 32-byte boundary -mcabac Enable CABAC instructions -mcmodel=medany Equivalent to -mcmodel=medium, compatible with RISC-V gcc. -mcmodel=medlow Equivalent to -mcmodel=small, compatible with RISC-V gcc. -mcmse Allow use of CMSE (Armv8-M Security Extensions) -mcode-object-version=<value> Specify code object ABI version. Defaults to 4. (AMDGPU only) -mcpu=<value> For a list of available CPUs for the target use '-mcpu=help' -mcrbits Control the CR-bit tracking feature on PowerPC. ``-mcrbits`` (the enablement of CR-bit tracking support) is the default for POWER8 and above, as well as for all other CPUs when optimization is applied (-O2 and above). -mcrc Allow use of CRC instructions (ARM/Mips only) -mcumode Specify CU wavefront execution mode (AMDGPU only) -mdefault-visibility-export-mapping=<value> Mapping between default visibility and export -mdouble=<n Force double to be <n> bits -MD Write a depfile containing user and system headers -meabi <value> Set EABI type. Default depends on triple) -membedded-data Place constants in the .rodata section instead of the .sdata section even if they meet the -G <size> threshold (MIPS) -menable-experimental-extensions Enable use of experimental RISC-V extensions. -mexec-model=<value> Execution model (WebAssembly only) -mexecute-only Disallow generation of data access to code sections (ARM only) -mextern-sdata Assume that externally defined data is in the small data if it meets the -G <size> threshold (MIPS) -mfentry Insert calls to fentry at function entry (x86/SystemZ only) -mfix-cmse-cve-2021-35465 Work around VLLDM erratum CVE-2021-35465 (ARM only) -mfix-cortex-a53-835769 Workaround Cortex-A53 erratum 835769 (AArch64 only) -mfix-cortex-a57-aes-1742098 Work around Cortex-A57 Erratum 1742098 (ARM only) -mfix-cortex-a72-aes-1655431 Work around Cortex-A72 Erratum 1655431 (ARM only) -mfp32 Use 32-bit floating point registers (MIPS only) -mfp64 Use 64-bit floating point registers (MIPS only) -mframe-chain=<value> Select the frame chain model used to emit frame records (Arm only). -mfunction-return=<value> Replace returns with jumps to ``__x86_return_thunk`` (x86 only, error otherwise) -MF <file> Write depfile output from -MMD, -MD, -MM, or -M to <file> -mgeneral-regs-only Generate code which only uses the general purpose registers (AArch64/x86 only) -mglobal-merge Enable merging of globals -mgpopt Use GP relative accesses for symbols known to be in a small data section (MIPS) -mguard=<value> Enable or disable Control Flow Guard checks and guard tables emission -MG Add missing headers to depfile -mharden-sls=<value> Select straight-line speculation hardening scope (ARM/AArch64/X86 only). <arg> must be: all, none, retbr(ARM/AArch64), blr(ARM/AArch64), comdat(ARM/AArch64), nocomdat(ARM/AArch64), return(X86), indirect-jmp(X86) -mhvx-ieee-fp Enable Hexagon HVX IEEE floating-point -mhvx-length=<value> Set Hexagon Vector Length -mhvx-qfloat Enable Hexagon HVX QFloat instructions -mhvx=<value> Enable Hexagon Vector eXtensions -mhvx Enable Hexagon Vector eXtensions -miamcu Use Intel MCU ABI -mignore-xcoff-visibility Not emit the visibility attribute for asm in AIX OS or give all symbols 'unspecified' visibility in XCOFF object file --migrate Run the migrator -mincremental-linker-compatible (integrated-as) Emit an object file which can be used with an incremental linker -mindirect-branch-cs-prefix Add cs prefix to call and jmp to indirect thunk -mindirect-jump=<value> Change indirect jump instructions to inhibit speculation -mios-version-min=<value> Set iOS deployment target -MJ <value> Write a compilation database entry per input -mllvm=<arg> Alias for -mllvm -mllvm <value> Additional arguments to forward to LLVM's option processing -mlocal-sdata Extend the -G behaviour to object local data (MIPS) -mlong-calls Generate branches with extended addressability, usually via indirect jumps. -mlong-double-128 Force long double to be 128 bits -mlong-double-64 Force long double to be 64 bits -mlong-double-80 Force long double to be 80 bits, padded to 128 bits for storage -mlvi-cfi Enable only control-flow mitigations for Load Value Injection (LVI) -mlvi-hardening Enable all mitigations for Load Value Injection (LVI) -mmacos-version-min=<value> Set macOS deployment target -mmadd4 Enable the generation of 4-operand madd.s, madd.d and related instructions. -mmark-bti-property Add .note.gnu.property with BTI to assembly files (AArch64 only) -MMD Write a depfile containing user headers -mmemops Enable generation of memop instructions -mmlir <value> Additional arguments to forward to MLIR's option processing -mms-bitfields Set the default structure layout to be compatible with the Microsoft compiler standard -mmsa Enable MSA ASE (MIPS only) -mmt Enable MT ASE (MIPS only) -MM Like -MMD, but also implies -E and writes to stdout by default -mno-abicalls Disable SVR4-style position-independent code (Mips only) -mno-bti-at-return-twice Do not add a BTI instruction after a setjmp or other return-twice construct (Arm/AArch64 only) -mno-crc Disallow use of CRC instructions (Mips only) -mno-cumode Specify WGP wavefront execution mode (AMDGPU only) -mno-embedded-data Do not place constants in the .rodata section instead of the .sdata if they meet the -G <size> threshold (MIPS) -mno-execute-only Allow generation of data access to code sections (ARM only) -mno-extern-sdata Do not assume that externally defined data is in the small data if it meets the -G <size> threshold (MIPS) -mno-fix-cmse-cve-2021-35465 Don't work around VLLDM erratum CVE-2021-35465 (ARM only) -mno-fix-cortex-a53-835769 Don't workaround Cortex-A53 erratum 835769 (AArch64 only) -mno-fix-cortex-a57-aes-1742098 Don't work around Cortex-A57 Erratum 1742098 (ARM only) -mno-fix-cortex-a72-aes-1655431 Don't work around Cortex-A72 Erratum 1655431 (ARM only) -mno-fmv Disable function multiversioning -mno-gather Disable generation of gather instructions in auto-vectorization(x86 only) -mno-global-merge Disable merging of globals -mno-gpopt Do not use GP relative accesses for symbols known to be in a small data section (MIPS) -mno-hvx-ieee-fp Disable Hexagon HVX IEEE floating-point -mno-hvx-qfloat Disable Hexagon HVX QFloat instructions -mno-hvx Disable Hexagon Vector eXtensions -mno-implicit-float Don't generate implicit floating point or vector instructions -mno-incremental-linker-compatible (integrated-as) Emit an object file which cannot be used with an incremental linker -mno-local-sdata Do not extend the -G behaviour to object local data (MIPS) -mno-long-calls Restore the default behaviour of not generating long calls -mno-lvi-cfi Disable control-flow mitigations for Load Value Injection (LVI) -mno-lvi-hardening Disable mitigations for Load Value Injection (LVI) -mno-madd4 Disable the generation of 4-operand madd.s, madd.d and related instructions. -mno-memops Disable generation of memop instructions -mno-movt Disallow use of movt/movw pairs (ARM only) -mno-ms-bitfields Do not set the default structure layout to be compatible with the Microsoft compiler standard -mno-msa Disable MSA ASE (MIPS only) -mno-mt Disable MT ASE (MIPS only) -mno-neg-immediates Disallow converting instructions with negative immediates to their negation or inversion. -mno-nvj Disable generation of new-value jumps -mno-nvs Disable generation of new-value stores -mno-outline-atomics Don't generate local calls to out-of-line atomic operations -mno-outline Disable function outlining (AArch64 only) -mno-packets Disable generation of instruction packets -mno-pic-data-is-text-relative Don't assume data segments are relative to text segment -mno-relax Disable linker relaxation -mno-restrict-it Allow generation of complex IT blocks. -mno-save-restore Disable using library calls for save and restore -mno-scatter Disable generation of scatter instructions in auto-vectorization(x86 only) -mno-seses Disable speculative execution side effect suppression (SESES) -mno-stack-arg-probe Disable stack probes which are enabled by default -mno-tgsplit Disable threadgroup split execution mode (AMDGPU only) -mno-tls-direct-seg-refs Disable direct TLS access through segment registers -mno-unaligned-access Force all memory accesses to be aligned (AArch32/AArch64/LoongArch only) -mno-wavefrontsize64 Specify wavefront size 32 mode (AMDGPU only) -mnocrc Disallow use of CRC instructions (ARM only) -mnop-mcount Generate mcount/__fentry__ calls as nops. To activate they need to be patched in. -mnvj Enable generation of new-value jumps -mnvs Enable generation of new-value stores -module-dependency-dir <value> Directory to dump module dependencies to -module-file-info Provide information about a particular module file -momit-leaf-frame-pointer Omit frame pointer setup for leaf functions -moutline-atomics Generate local calls to out-of-line atomic operations -moutline Enable function outlining (AArch64 only) -mpacked-stack Use packed stack layout (SystemZ only). -mpackets Enable generation of instruction packets -mpad-max-prefix-size=<value> Specify maximum number of prefixes to use for padding -mpic-data-is-text-relative Assume data segments are relative to text segment -mprefer-vector-width=<value> Specifies preferred vector width for auto-vectorization. Defaults to 'none' which allows target specific decisions. -mprintf-kind=<value> Specify the printf lowering scheme (AMDGPU only), allowed values are "hostcall"(printing happens during kernel execution, this scheme relies on hostcalls which require system to support pcie atomics) and "buffered"(printing happens after all kernel threads exit, this uses a printf buffer and does not rely on pcie atomic support) -MP Create phony target for each dependency (other than main file) -mqdsp6-compat Enable hexagon-qdsp6 backward compatibility -MQ <value> Specify name of main file output to quote in depfile -mrecip=<value> Control use of approximate reciprocal and reciprocal square root instructions followed by <n> iterations of Newton-Raphson refinement. <value> = ( ['!'] ['vec-'] ('rcp'|'sqrt') [('h'|'s'|'d')] [':'<n>] ) | 'all' | 'default' | 'none' -mrecip Equivalent to '-mrecip=all' -mrecord-mcount Generate a __mcount_loc section entry for each __fentry__ call. -mrelax-all (integrated-as) Relax all machine instructions -mrelax Enable linker relaxation -mrestrict-it Disallow generation of complex IT blocks. It is off by default. -mrtd Make StdCall calling convention the default -mrvv-vector-bits=<value> Specify the size in bits of an RVV vector register. Defaults to the vector length agnostic value of "scalable". Accepts power of 2 values between 64 and 65536. Also accepts "zvl" to use the value implied by -march/-mcpu. Value will be reflected in __riscv_v_fixed_vlen preprocessor define (RISC-V only) -msave-restore Enable using library calls for save and restore -mseses Enable speculative execution side effect suppression (SESES). Includes LVI control flow integrity mitigations -msign-return-address=<value> Select return address signing scope -mskip-rax-setup Skip setting up RAX register when passing variable arguments (x86 only) -msmall-data-limit=<value> Put global and static data smaller than the limit into a special section -msoft-float Use software floating point -mstack-alignment=<value> Set the stack alignment -mstack-arg-probe Enable stack probes -mstack-probe-size=<value> Set the stack probe size -mstack-protector-guard-offset=<value> Use the given offset for addressing the stack-protector guard -mstack-protector-guard-reg=<value> Use the given reg for addressing the stack-protector guard -mstack-protector-guard-symbol=<value> Use the given symbol for addressing the stack-protector guard -mstack-protector-guard=<value> Use the given guard (global, tls) for addressing the stack-protector guard -mstackrealign Force realign the stack at entry to every function -msve-vector-bits=<value> Specify the size in bits of an SVE vector register. Defaults to the vector length agnostic value of "scalable". (AArch64 only) -msvr4-struct-return Return small structs in registers (PPC32 only) -mtargetos=<value> Set the deployment target to be the specified OS and OS version -mtgsplit Enable threadgroup split execution mode (AMDGPU only) -mthread-model <value> The thread model to use. Defaults to 'posix') -mtls-direct-seg-refs Enable direct TLS access through segment registers (default) -mtls-size=<value> Specify bit size of immediate TLS offsets (AArch64 ELF only): 12 (for 4KB) | 24 (for 16MB, default) | 32 (for 4GB) | 48 (for 256TB, needs -mcmodel=large) -mtp=<value> Thread pointer access method. For AArch32: 'soft' uses a function call, or 'tpidrurw', 'tpidruro' or 'tpidrprw' use the three CP15 registers. 'cp15' is an alias for 'tpidruro'. For AArch64: 'tpidr_el0', 'tpidr_el1', 'tpidr_el2', 'tpidr_el3' or 'tpidrro_el0' use the five system registers. 'elN' is an alias for 'tpidr_elN'. -mtune=<value> Only supported on AArch64, PowerPC, RISC-V, SystemZ, and X86 -MT <value> Specify name of main file output in depfile -munaligned-access Allow memory accesses to be unaligned (AArch32/AArch64/LoongArch only) -munsafe-fp-atomics Enable generation of unsafe floating point atomic instructions. May generate more efficient code, but may not respect rounding and denormal modes, and may give incorrect results for certain memory destinations. (AMDGPU only) -mvscale-max=<value> Specify the vscale maximum. Defaults to the vector length agnostic value of "0". (AArch64/RISC-V only) -mvscale-min=<value> Specify the vscale minimum. Defaults to "1". (AArch64/RISC-V only) -MV Use NMake/Jom format for the depfile -mwavefrontsize64 Specify wavefront size 64 mode (AMDGPU only) -mxcoff-build-id=<0xHEXSTRING> On AIX, request creation of a build-id string, "0xHEXSTRING", in the string table of the loader section inside the linked binary -mxcoff-roptr Place constant objects with relocatable address values in the RO data section and add -bforceimprw to the linker flags (AIX only) -mzos-hlq-clang=<ClangHLQ> High level qualifier for z/OS C++RT side deck datasets -mzos-hlq-csslib=<CsslibHLQ> High level qualifier for z/OS CSSLIB dataset -mzos-hlq-le=<LeHLQ> High level qualifier for z/OS Language Environment datasets -mzos-sys-include=<SysInclude> Path to system headers on z/OS -M Like -MD, but also implies -E and writes to stdout by default --no-cuda-include-ptx=<value> Do not include PTX for the following GPU architecture (e.g. sm_35) or 'all'. May be specified more than once. --no-cuda-version-check Don't error out if the detected version of the CUDA install is too low for the requested CUDA gpu architecture. --no-default-config Disable loading default configuration files --no-gpu-bundle-output Do not bundle output files of HIP device compilation -no-hip-rt Do not link against HIP runtime libraries --no-offload-arch=<value> Remove CUDA/HIP offloading device architecture (e.g. sm_35, gfx906) from the list of devices to compile for. 'all' resets the list to its default value. --no-offload-new-driver Don't Use the new driver for offloading compilation. --no-system-header-prefix=<prefix> Treat all #include paths starting with <prefix> as not including a system header. -nobuiltininc Disable builtin #include directories -nogpuinc Do not add include paths for CUDA/HIP and do not include the default CUDA/HIP wrapper headers -nogpulib Do not link device library for CUDA/HIP device compilation -nohipwrapperinc Do not include the default HIP wrapper headers and include paths -nostdinc++ Disable standard #include directories for the C++ standard library --nvptx-arch-tool=<value> Tool used for detecting NVIDIA GPU arch in the system. -ObjC++ Treat source input files as Objective-C++ inputs -objcmt-allowlist-dir-path=<value> Only modify files with a filename contained in the provided directory path -objcmt-atomic-property Make migration to 'atomic' properties -objcmt-migrate-all Enable migration to modern ObjC -objcmt-migrate-annotation Enable migration to property and method annotations -objcmt-migrate-designated-init Enable migration to infer NS_DESIGNATED_INITIALIZER for initializer methods -objcmt-migrate-instancetype Enable migration to infer instancetype for method result type -objcmt-migrate-literals Enable migration to modern ObjC literals -objcmt-migrate-ns-macros Enable migration to NS_ENUM/NS_OPTIONS macros -objcmt-migrate-property-dot-syntax Enable migration of setter/getter messages to property-dot syntax -objcmt-migrate-property Enable migration to modern ObjC property -objcmt-migrate-protocol-conformance Enable migration to add protocol conformance on classes -objcmt-migrate-readonly-property Enable migration to modern ObjC readonly property -objcmt-migrate-readwrite-property Enable migration to modern ObjC readwrite property -objcmt-migrate-subscripting Enable migration to modern ObjC subscripting -objcmt-ns-nonatomic-iosonly Enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's 'atomic' attribute -objcmt-returns-innerpointer-property Enable migration to annotate property with NS_RETURNS_INNER_POINTER -objcmt-whitelist-dir-path=<value> Alias for -objcmt-allowlist-dir-path -ObjC Treat source input files as Objective-C inputs -object-file-name=<file> Set the output <file> for debug infos --offload-arch=<value> Specify an offloading device architecture for CUDA, HIP, or OpenMP. (e.g. sm_35). If 'native' is used the compiler will detect locally installed architectures. For HIP offloading, the device architecture can be followed by target ID features delimited by a colon (e.g. gfx908:xnack+:sramecc-). May be specified more than once. --offload-device-only Only compile for the offloading device. --offload-host-device Only compile for the offloading host. --offload-host-only Only compile for the offloading host. --offload-link Use the new offloading linker to perform the link job. --offload-new-driver Use the new driver for offloading compilation. --offload=<value> Specify comma-separated list of offloading target triples (CUDA and HIP only) -o <file> Write output to <file> -pedantic Warn on language extensions -pg Enable mcount instrumentation -pipe Use pipes between commands, when possible --precompile Only precompile the input -print-diagnostic-options Print all of Clang's warning options -print-effective-triple Print the effective target triple -print-file-name=<file> Print the full library path of <file> -print-ivar-layout Enable Objective-C Ivar layout bitmap print trace -print-libgcc-file-name Print the library path for the currently used compiler runtime library ("libgcc.a" or "libclang_rt.builtins.*.a") -print-multi-flags-experimental Print the flags used for selecting multilibs (experimental) -print-prog-name=<name> Print the full program path of <name> -print-resource-dir Print the resource directory pathname -print-rocm-search-dirs Print the paths used for finding ROCm installation -print-runtime-dir Print the directory pathname containing clangs runtime libraries -print-search-dirs Print the paths used for finding libraries and programs -print-supported-cpus Print supported cpu models for the given target (if target is not specified, it will print the supported cpus for the default target) -print-target-triple Print the normalized target triple -print-targets Print the registered targets -pthread Support POSIX threads in generated code --ptxas-path=<value> Path to ptxas (used for compiling CUDA code) -P Disable linemarker output in -E mode -p Enable mcount instrumentation with prof -Qn Do not emit metadata containing compiler name and version -Qunused-arguments Don't emit warning for unused driver arguments -Qy Emit metadata containing compiler name and version -relocatable-pch Whether to build a relocatable precompiled header -rewrite-legacy-objc Rewrite Legacy Objective-C source to C++ -rewrite-objc Rewrite Objective-C source to C++ --rocm-device-lib-path=<value> ROCm device library path. Alternative to rocm-path. --rocm-path=<value> ROCm installation path, used for finding and automatically linking required bitcode libraries. -Rpass-analysis=<value> Report transformation analysis from optimization passes whose name matches the given POSIX regular expression -Rpass-missed=<value> Report missed transformations by optimization passes whose name matches the given POSIX regular expression -Rpass=<value> Report transformations performed by optimization passes whose name matches the given POSIX regular expression -rtlib=<value> Compiler runtime library to use -R<remark> Enable the specified remark -save-stats=<value> Save llvm statistics. -save-stats Save llvm statistics. -save-temps=<value> Save intermediate compilation results. -save-temps Save intermediate compilation results -serialize-diagnostics <value> Serialize compiler diagnostics to a file -shared-libsan Dynamically link the sanitizer runtime --start-no-unused-arguments Don't emit warnings about unused arguments for the following arguments -static-libsan Statically link the sanitizer runtime (Not supported for ASan, TSan or UBSan on darwin) -static-openmp Use the static host OpenMP runtime while linking. -std=<value> Language standard to compile for -stdlib++-isystem <directory> Use directory as the C++ standard library include path -stdlib=<value> C++ standard library to use -sycl-std=<value> SYCL language standard to compile for. --system-header-prefix=<prefix> Treat all #include paths starting with <prefix> as including a system header. -S Only run preprocess and compilation steps --target=<value> Generate code for the given target -time Time individual commands -traditional-cpp Enable some traditional CPP emulation -trigraphs Process trigraph sequences -T <script> Specify <script> as linker script -undef undef all system defines -unwindlib=<value> Unwind library to use -U <macro> Undefine macro <macro> --verify-debug-info Verify the binary representation of debug output -verify-pch Load and verify that a pre-compiled header file is not stale --version Print version information -vfsoverlay <value> Overlay the virtual filesystem described by file over the real file system. Additionally, pass this overlay file to the linker if it supports it -v Show commands to run and use verbose output -Wa,<arg> Pass the comma separated arguments in <arg> to the assembler -Wdeprecated Enable warnings for deprecated constructs and define __DEPRECATED -Wl,<arg> Pass the comma separated arguments in <arg> to the linker -working-directory <value> Resolve file paths relative to the specified directory -Wp,<arg> Pass the comma separated arguments in <arg> to the preprocessor -W<warning> Enable the specified warning -w Suppress all warnings -Xanalyzer <arg> Pass <arg> to the static analyzer -Xarch_device <arg> Pass <arg> to the CUDA/HIP device compilation -Xarch_host <arg> Pass <arg> to the CUDA/HIP host compilation -Xassembler <arg> Pass <arg> to the assembler -Xclang=<arg> Alias for -Xclang -Xclang <arg> Pass <arg> to clang -cc1 -Xcuda-fatbinary <arg> Pass <arg> to fatbinary invocation -Xcuda-ptxas <arg> Pass <arg> to the ptxas assembler -Xlinker <arg> Pass <arg> to the linker -Xoffload-linker<triple> <arg> Pass <arg> to the offload linkers or the ones idenfied by -<triple> -Xopenmp-target=<triple> <arg> Pass <arg> to the target offloading toolchain identified by <triple>. -Xopenmp-target <arg> Pass <arg> to the target offloading toolchain. -Xpreprocessor <arg> Pass <arg> to the preprocessor -x <language> Treat subsequent input files as having type <language> -z <arg> Pass -z <arg> to the linker CastXML project maintained and supported by Kitware (kitware.com). Ubuntu clang version 17.0.6 (5build1) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: