llvm-6502/docs/CommandGuide/llvmgcc.pod

=pod

=head1 NAME

llvm-gcc - LLVM C front-end

=head1 SYNOPSIS

B<llvm-gcc> [I<options>] I<filename>

=head1 DESCRIPTION

The B<llvm-gcc> command is the LLVM C front end.  It is a modified
version of gcc that compiles C/ObjC programs into native objects, LLVM
bytecode or LLVM assembly language, depending upon the options.

By default, B<llvm-gcc> compiles to native objects just like GCC does. If the
B<-emit-llvm> option is given then it will generate LLVM bytecode files instead.
If B<-S> (assembly) is also given, then it will generate LLVM assembly. 

Being derived from the GNU Compiler Collection, B<llvm-gcc> has many
of gcc's features and accepts most of gcc's options.  It handles a
number of gcc's extensions to the C programming language.

=head1 OPTIONS

=over

=item B<--help>

Print a summary of command line options.

=item B<-S>

Do not generate an LLVM bytecode file.  Rather, compile the source
file into an LLVM assembly language file.

=item B<-c>

Do not generate a linked executable.  Rather, compile the source
file into an LLVM bytecode file.  This bytecode file can then be
linked with other bytecode files later on to generate a full LLVM
executable.

=item B<-o> I<filename>

Specify the output file to be I<filename>.

=item B<-I> I<directory>

Add a directory to the header file search path.  This option can be
repeated.

=item B<-L> I<directory>

Add I<directory> to the library search path.  This option can be
repeated.

=item B<-l>I<name>

Link in the library libI<name>.[bc | a | so].  This library should
be a bytecode library.

=item B<-emit-llvm>

Make the output be LLVM bytecode (or assembly) instead of native object (or
assembly).

=back

=head1 EXIT STATUS

If B<llvm-gcc> succeeds, it will exit with 0.  Otherwise, if an error
occurs, it will exit with a non-zero value.

=head1 SEE ALSO

L<llvm-g++|llvmgxx>

=head1 AUTHORS

Maintained by the LLVM Team (L<http://llvm.org>).

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