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89 lines
2.0 KiB
Plaintext
89 lines
2.0 KiB
Plaintext
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=pod
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=head1 NAME
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llvmgcc - LLVM C front-end
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=head1 SYNOPSIS
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llvmgcc [options] filename
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=head1 DESCRIPTION
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The B<llvmgcc> command is the LLVM C front end. It is a modified
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version of gcc that takes C programs and compiles them into LLVM
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bytecode or assembly language, depending upon the options.
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Unless the B<-S> option is specified, B<llvmgcc> will use the
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L<gccas|gccas> program to perform some optimizations and create an
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LLVM bytecode file. Unless the B<-c> option is specified, B<llvmgcc>
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will also use the L<gccld|gccld> program to perform further
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optimizations and link the resulting bytecode file(s) with support
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libraries to create an executable program.
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Being derived from the GNU Compiler Collection, B<llvmgcc> has many
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of gcc's features and accepts most of gcc's options. It handles a
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number of gcc's extensions to the C programming language.
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=head1 OPTIONS
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=over
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=item B<--help>
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Print a summary of command line options.
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=item B<-S>
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Do not generate an LLVM bytecode file. Rather, compile the source
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file into an LLVM assembly language file.
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=item B<-c>
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Do not generate a linked executable. Rather, compile the source
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file into an LLVM bytecode file. This bytecode file can then be
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linked with other bytecode files later on to generate a full LLVM
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executable.
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=item B<-o> I<filename>
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Specify the output file to be I<filename>.
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=item B<-I> I<directory>
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Add a directory to the header file search path. This option can be
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repeated.
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=item B<-L> I<directory>
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Add I<directory> to the library search path. This option can be
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repeated.
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=item B<-l>I<name>
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Link in the library libI<name>.[bc | a | so]. This library should
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be a bytecode library.
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=item B<-Wl,>I<option>
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Pass I<option> to the linker (usually gccld).
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=back
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=head1 EXIT STATUS
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If B<llvmgcc> succeeds, it will exit with 0. Otherwise, if an error
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occurs, it will exit with a non-zero value.
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=head1 SEE ALSO
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L<llvmg++|llvmgxx>, L<gccas>, L<gccld>
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=head1 AUTHORS
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Maintained by the LLVM Team (L<http://llvm.cs.uiuc.edu>).
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=cut
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