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NAME

       fpc - Free Pascal Compiler (FPC) binary

SYNOPSIS

       fpc [options] [sourcefile]

DESCRIPTION

       This  binary  is the main binary of the Free Pascal Compiler (FPC) which is a Turbo Pascal
       and Delphi (7.0) compatible standalone (non GCC frontend) multitarget Pascal compiler.

       The compiler uses LD(1) and can use AS(1) (see parameter  -Aas),  but  also  has  its  own
       binary object writer.

       The  current  main targets are Go32V2 (Dos DJGPP extender), Freebsd, Linux, MacOS, MacOSX,
       MorphOS, Netware, OS/2 and Win32.  The other targets (M68K compilers for Atari and  Amiga)
       are either based on older versions of the compiler or are still in development.

       This  manpage  is  meant  for  quick-reference  only. FPC comes with a great (2000+ pages)
       manual, which is updated constantly, while this man page can be out of date.

Version number

       Starting with release 1.0, a new versioning system has  been  implemented.   If  the  last
       number  is  even  (1.0,  1.0.2), it is stable, and if the last number is odd it is a daily
       changing development version.(1.0.5, 1.1) just like the linux kernel.

       Version 0.99.5 however is a stable release. It was made before the even/odd version naming
       system was introduced.

Usage

       The  compilation  process is started by typing fpc followed by a sourcefile name (normally
       with .pas or .pp extension). Before processing the actual processing of the  source  file,
       fpc.cfg(5)  the  configuration file of the compiler is read which contains the location of
       the RTL, other  packages  (FCL,  FreeVision),  and  optionally  default  values  for  some
       switches. See the separate manpage of fpc.cfg(5) for more information.

Options

       General options

       -h     if  you  specify this option, the compiler outputs a list of all options, and exits
              after that.

       -?     idem as -h, but waiting after every screenfull for the enter key.

       -i     This option tells the compiler to print the copyright information.

              You can give it an option, as -ixxx where "xxx" can be one of the following:

              D      Returns the compiler date.

              V      Returns the compiler version.

              SO     Returns the compiler OS.

              SP     Returns the compiler processor.

              TO     Returns the target OS.

              TP     Returns the target Processor.

       -l     This option tells the compiler to print the FPC logo on standard  output.  It  also
              gives you the FPC version number.

       -n     Tells the compiler not to read the configuration file fpc.cfg(5)

       Options for getting feedback

       -vxxx  Be verbose. "xxx" is a combination of the following:

              e      Tells the compiler to show only errors. This option is on by default.

              i      Tells the compiler to show some general information.

              w      Tells the compiler to issue warnings.

              n      Tells the compiler to issue notes.

              h      Tells the compiler to issue hints.

              l      Tells  the compiler to show the line numbers as it processes a file. Numbers
                     are shown per 100.

              u      Tells the compiler to print the names of the files it opens.

              t      Tells the compiler to print the names of the files it tries to open.

              p      Tells the compiler to print the names of procedures and functions as  it  is
                     processing them.

              c      Tells the compiler to warn you when it processes a conditional.

              m      Tells the compiler to write which macros are defined.

              d      Tells the compiler to write other debugging info.

              a      Tells  the  compiler  to  write  all  possible  info.  (this  is the same as
                     specifying all options)

              0      Tells the compiler to write no messages. This is useful  when  you  want  to
                     override the default setting in the configuration file.

              b      Tells  the  compiler  to  show  all  procedure declarations if an overloaded
                     function error occurs.

              x      Tells the compiler to output some executable info (for Win32 platform only).

              r      Rhide/GCC compatibility mode: formats the error  differently,  so  they  are
                     understood by RHIDE.

       Options concerning files and directories

       -exxx  tells  the  compiler that xxx is the directory where it can find the executables as
              (the assembler) and ld (the linker).

       -FD    same as -e.

       -Fexxx This option tells the compiler to write errors, etc. to the file xxx

       -FExxx set the executable/unit output path to xxx

       -Fixxx adds xxx to the path where the compiler searches for its include files.

       -Flxxx Adds xxx to the library searching path, and is passe to the linker.

       -FLxxx ( Linux only) Tells the compiler to use xxx as the dynamic linker. Default this  is
              /lib/ld-linux.so.2, or lib/ld-linux.so.1, depending on which one is found.

       -Foxxx Adds  xxx  to  the  object file path. This path is used when looking for files that
              need to be linked in.

       -Frxxx tells the compiler that xxx contains the compiler messages.  Default  the  compiler
              has  built-in  messages. Specifying this option will override the default messages.
              (useful if you want to use a language other than the default language).

       -Fuxxx Adds xxx to the unit path.  By default, the compiler only searches for units in the
              current  directory and the directory where the compiler itself resides. This option
              tells the compiler also to look in the directory xxx

       -FUxxx Tells the compiler  to  write  units  in  directory  xxx  instead  of  the  current
              directory.

       -Ixxx  Add  xxx  to  the  include  file  search  path.  This path is used when looking for
              include files.

       for more information on these options, see also the programmers manual.

       -a     Tells the compiler not to delete the assembler file.   This  also  counts  for  the
              (possibly) generated batch script.

       -al    Tells  the  compiler  to  include  the  sourcecode  lines  in the assembler file as
              comments.

       -an    Tells the compiler to include node information in  the  generated  assembler  file.
              This is mainly for use by the compiler developers.

       -ap    Tells the compiler to use pipes to communicate with the assembler.

       -ar    Tells the compiler to include register allocation/deallocation information.

       -at    Tells   the   compiler   to   include  temparary  register  allocation/deallocation
              information.

       -Axxx  specifies what kind of assembler should be generated .  Here  xxx  is  one  of  the
              following :

              AS     A unix .o (object) file, using GNU AS

              coff   coff object file (go32) using internal writer.

              default
                     Use the default writer for the current platform.

              elf    elf object file (linux, 32-bit only) using internal writer.

              nasmcoff
                     a coff file using the nasm assembler.

              nasmelf
                     a ELF32 file (LINUX only) using the nasm assembler.

              nasmobj
                     a obj file using the nasm assembler.

              masm   An obj file using the Microsoft masm assembler.

              pecoff pecoff object file (win32) using internal writer.

              tasm   An obj file using the Borland tasm assembler.

              wasm   An obj file using the Watcom assembler.

       -Ccxxx set the default calling convention to XXX.

       -CD    Create dynamic library.

       -Ce    Compile using emulated floating point instructions.

       -Cfxxx Set the used floating point instruction set to xxx.

       -Cg    Generate PIC code.

       -Chxxx Reserves xxx bytes heap.  xxx should be between 1024 and 67107840.

       -Ci    Generate Input/Output checking code.

       -Cn    Omit the linking stage.

       -Co    Generate Integer overflow checking code.

       -CR    Verify object call validity (method calls mustbe valid).

       -Cr    Generate Range checking code.

       -Csxxx Set stack size to xxx bytes.

       -Ct    generate stack checking code.

       -CX    Create a smartlinked library.

       -dxxx  Define  the symbol name xxx This can be used to conditionally compile parts of your
              code.

       -E     Same as -Cn.

       -g     Generate debugging information for debugging with GDB

       -gg    idem as -g.

       -gd    generate debugging info for dbx.

       -gh    use the heaptrc unit (see the units part of the FPC manual).

       -gl    use the lineinfo unit for line information (see the units part of the FPC manual).

       -gv    Generate information for debugging with valgrind.

       -gw    Generate DWARF debugging information.

       -Oxxx  optimize the compiler's output; xxx can have one of the following values :

              g      optimize for size, try to generate smaller code.

              G      optimize for time, try to generate faster code (default).

              r      keep certain variables in registers (experimental, use with caution).

              u      uncertain optimizations

              1      Level 1 optimizations (quick optimizations).

              2      Level 2 optimizations (-O1 plus some slower optimizations).

              3      Level 3 optimizations (-O2 plus -Ou).

              pn     Specify processor : n can be one of

                     1      optimize for 386/486

                     2      optimize for Pentium/PentiumMMX (tm)

                     3      optimizations for PentiumPro / P-II / Cyrix 6x86 / K6 (tm)

              The exact effect of these effects can be found  in  the  programmers  part  of  the
              manual.

       -oxxx  Tells  the  compiler  to  use xxx as the name of the output file (executable). Only
              with programs.

       -pg    Generate profiler code for gprof.

       -s     Tells the compiler not to call the assembler and  linker.   Instead,  the  compiler
              writes  a  script,  PPAS.BAT  under  DOS, or ppas.sh under Linux, which can then be
              executed to produce an executable.

       -sh    Tells the compiler to generate a script that can be used to assemble  and  link  on
              the host system, not on the target system. Use this when cross-compiling.

       -sr    Skip register allocation stage in compiler (use with -ar)

       -st    Tells  the  compiler  to generate a script that can be used to assemble and link on
              the target system, not on the host system. Use this when cross-compiling.

       -Txxx  Specifies the target operating system.  xxx can be one of the following:

              EMX    OS/2 and DOS via the EMX extender.

              FREEBSD
                     FreeBSD

              GO32V2 DOS and version 2 of the DJ DELORIE extender.

              LINUX  Linux.

              NETBSD Netbsd.

              NETWARE
                     Novell Netware module (clib)

              NETLIBC
                     Novell Netware module (libc)

              OPENBSD
                     OpenBSD

              OS2    OS/2 (native mode)

              SunOS  Solaris SunOS

              WATCOM WatCOM dos extender

              WDOSX  WDosX Dos extender

              WIN32  Windows 32 bit.

       -uxxx  undefine the symbol xxx if it is defined. This is the opposite of the -d option.

       -Xx    Executable options. These tell the compiler  what  kind  of  executable  should  be
              generated. the parameter x can be one of the following:

              c      (Linux  only,  obsolete)  Link  with the C library. You should only use this
                     when you start to port Free Pascal to another operating system.

              D      Link with dynamic libraries (defines the FPC_LINK_DYNAMIC symbol)

              d      Don't use the standard library path. Use this when cross-compiling, to avoid
                     linking with the host OS libraries.

              Pxxx   Prepend  the  names  of  binutils  (as,  ld)  with  xxx. For use when cross-
                     compiling.

              rxxx   Set the library search path to xxx.

              s      Strip the symbols from the executable.

              S      Link with static libraries (defines the FPC_LINK_STATIC symbol)

              t      Link statically (passes -static to the linker)

              X      Link smart. Using this option sets the FPC_LINK_SMART symbol.

       Options concerning the sources (language options) for more information on  these  options,
       see also in the Programmers Manual

       -Mmode Specify the language mode.  mode can be one of the following:

              delphi Delphi-compatibility  mode.  This  loads  the  objpas  unit, and switches on
                     ansistring mode ( -Sh ).

              fpc    Default mode.

              gpc    GNU pascal mode (does nothing at the moment)

              macpas Mac pascal mode. This loads  the  macpas  unit  and  switches  on  some  Mac
                     extensions (mainly macros)

              objfpc Object Pascal mode. This loads the objpas unit.

              tp     Turbo Pascal mode.

       -Rxxx  Specifies  what  assembler you use in your "asm" assembler code blocks. Here xxx is
              one of the following:

              att    Asm blocks contain AT&T assembler.

              intel  Asm blocks contain Intel assembler.

              direct Asm blocks should be copied as-is in the assembler file.

       -S2    Switch on Delphi 2 extensions.

       -Sa    Generate code for assertions.

       -Sc    Support C-style operators, i.e. *=, +=, /= and -=.

       -Sd    Tries to be Delphi compatible

       -Se    The compiler stops after the first error. Normally, the compiler tries to  continue
              compiling after an error, until 50 errors are reached, or a fatal error is reached,
              and then it stops. With this switch, the compiler will stop after the first error.

       -Sg    Support the label and goto commands.

       -Sh    use ansistrings by default.

       -SIxxx Specify the kind of interfaces.  xxx can be one of the following:

              COM    use COM interfaces. (all interfaces descend from IUnknown)

              CORBA  use CORBA interfaces. (no inheritance is supposed)

       -Si    Support C++ style INLINE.

       -Sm    Support C-style macros.

       -So    Try to be Borland TP 7.0 compatible (no function overloading etc.).

       -Sp    Try to be GPC (GNU Pascal Compiler) compatible.

       -Ss    The name of constructors must be "init", and the  name  of  destructors  should  be
              "done".

       -St    Allow the "static" keyword in objects.

       -Un    Do  not  check  the unit name. Normally, the unit name is the same as the filename.
              This option allows both to be different.

       -Ur    Create a release unit. This sets a special flag in the unit, causing  the  compiler
              not to look for sources.

       -Us    Compile  a  system  unit.  This option causes the compiler to define only some very
              basic types.

SEE ALSO

       fpc.cfg(5) ppdep(1) ppudump(1) ppumove(1) ptop(1) h2pas(1) ld(1) as(1)