NAME

       gdc - A GCC-based compiler for the D language

SYNOPSIS

       gdc [-c]
           [-g] [-pg] [-Olevel]
           [-Idir...] [-Ldir...]
           [-o outfile] infile...

       For any given input file, the file name suffix determines what kind of compilation is
       done:

       file.d
           D source files.

       file.di
           D interface files.

       file.o
           Object files to link in.

       file.a
           Library files to link in

DESCRIPTION

       The gdc command is a frontend to gcc and supports many of the same options.    This manual
       only documents the options specific to gdc.  Most of these have both positive and negative
       forms; the negative form of -ffoo would be -fno-foo.  This manual documents only one of
       these two forms, whichever one is not the default.

       The gdc command may be used to compile D source code into an object file, link a
       collection of object files together, or do both in sequence.

       Only the most useful options are listed here; see below for the remainder.

OPTIONS

       -frelease
           Compile release version.

       -funittest
           Compile in unittest code.

       -fno-assert
           Turn off code generation for runtime assert()'s.

       -fno-invariants
           Turn off code generation for runtime invariant()'s.

       -fno-in
           Turn off code generation for runtime in() contracts.

       -fno-out
           Turn off code generation for runtime out() contracts.

       -fno-bounds-check
           Turns off array bounds checking for all functions.

       -fno-builtin
           Don't recognize built-in functions that do not begin with __builtin_ as prefix.

       -fno-emit-moduleinfo
           Turns off generation of module information and related functions.

       -fd-verbose
           Print information about D language processing to stdout.

       -fproperty
           For D2, enforce @property syntax.

       -fd-vtls
           List all variables going into thread local storage.

       -fignore-unknown-pragmas
           Ignore unsupported pragmas.

       -fsplit-dynamic-arrays
           Split dynamic arrays into length and pointer when passing to functions.

       -femit-templates
           Control template emission behaviour.

           Turning on this option will emit all templates, but make them private to the
           translation unit. The executable will have multiple copies of code and data.

           Turning off this option will tell the compiler to not emit templates at all.

           The default behaviour is to emit templates, but only if the compiler determines that
           it needs to.

       -fdebug=opt
           Compile in debug code into the program.

           These are supported options:

           level
               Compile in debug code <= level.

           ident
               Compile in debug code identified by ident.

       -fdeps=filename
           Write module dependencies to filename.

       -fmake-deps=filename
           Write makefile dependency output to the given file.

       -fmake-mdeps=filename
           Like -fmake-deps=filename but ignore system header files.

       -fonly=filename
           Process all modules specified on the command line, but only generate code for the
           module specified by the argument.

       -fversion=opt
           Compile in version code into the program.

           These are the supported options:

           level
               Compile in version code >= level.

           ident
               Compile in debug code identified by ident.

       -fintfc
           Generate D interface files.

       -fintfc-dir=directory
           Write D interface files to directory.

       -fintfc-file=filename
           Write D interface file to filename.

       -fdoc
           Generate documentation.

       -fdoc-dir=directory
           Write documentation file in directory.

       -fdoc-file=filename
           Write documentation file to filename.

       -fdoc-inc=filename
           Include a Ddoc macro file.

       -fXf=filename
           Write JSON file to filename.

       -fdump-source
           Dump decoded UTF-8 text from source.

       -Wcast-result
           Warn about casts that will produce a null or nil result.

       -Werror
           Make all warnings into errors.

       -Wno-deprecated
           Do not warn about usage of deprecated features.

       -Wunknown-pragmas
           Warn when a pragma is encountered that is not understood by GDC.

SEE ALSO

       gpl(7), gfdl(7), fsf-funding(7), gcc(1) and the Info entries for gdc and gcc.

COPYRIGHT

       Copyright (c) 2011, 2012, 2013 Free Software Foundation, Inc.

       Permission is granted to copy, distribute and/or modify this document under the terms of
       the GNU Free Documentation License, Version 1.3 or any later version published by the Free
       Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover
       Texts.  A copy of the license is included in the man page gfdl(7).