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.\" ========================================================================
.\"
.IX Title "LLVMGCC 1"
.TH LLVMGCC 1 "2007-02-11" "CVS" "LLVM Command Guide"
.SH "NAME"
llvm\-gcc \- LLVM C front\-end
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBllvm-gcc\fR [\fIoptions\fR] \fIfilename\fR
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBllvm-gcc\fR command is the \s-1LLVM\s0 C front end.  It is a modified
version of gcc that compiles C/ObjC programs into native objects, \s-1LLVM\s0
bytecode or \s-1LLVM\s0 assembly language, depending upon the options.
.PP
By default, \fBllvm-gcc\fR compiles to native objects just like \s-1GCC\s0 does. If the
\&\fB\-emit\-llvm\fR option is given then it will generate \s-1LLVM\s0 bytecode files instead.
If \fB\-S\fR (assembly) is also given, then it will generate \s-1LLVM\s0 assembly. 
.PP
Being derived from the \s-1GNU\s0 Compiler Collection, \fBllvm-gcc\fR 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.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-\-help\fR" 4
.IX Item "--help"
Print a summary of command line options.
.IP "\fB\-S\fR" 4
.IX Item "-S"
Do not generate an \s-1LLVM\s0 bytecode file.  Rather, compile the source
file into an \s-1LLVM\s0 assembly language file.
.IP "\fB\-c\fR" 4
.IX Item "-c"
Do not generate a linked executable.  Rather, compile the source
file into an \s-1LLVM\s0 bytecode file.  This bytecode file can then be
linked with other bytecode files later on to generate a full \s-1LLVM\s0
executable.
.IP "\fB\-o\fR \fIfilename\fR" 4
.IX Item "-o filename"
Specify the output file to be \fIfilename\fR.
.IP "\fB\-I\fR \fIdirectory\fR" 4
.IX Item "-I directory"
Add a directory to the header file search path.  This option can be
repeated.
.IP "\fB\-L\fR \fIdirectory\fR" 4
.IX Item "-L directory"
Add \fIdirectory\fR to the library search path.  This option can be
repeated.
.IP "\fB\-l\fR\fIname\fR" 4
.IX Item "-lname"
Link in the library lib\fIname\fR.[bc | a | so].  This library should
be a bytecode library.
.IP "\fB\-emit\-llvm\fR" 4
.IX Item "-emit-llvm"
Make the output be \s-1LLVM\s0 bytecode (or assembly) instead of native object (or
assembly).
.SH "EXIT STATUS"
.IX Header "EXIT STATUS"
If \fBllvm-gcc\fR succeeds, it will exit with 0.  Otherwise, if an error
occurs, it will exit with a non-zero value.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
llvm\-g++
.SH "AUTHORS"
.IX Header "AUTHORS"
Maintained by the \s-1LLVM\s0 Team (<http://llvm.org>).