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+=pod
+
+=head1 NAME
+
+llvmc - The LLVM Compiler Driver (WIP)
+
+=head1 SYNOPSIS
+
+B<llvmc> [I<options>] I<filenames...>
+
+=head1 DESCRIPTION
+
+B<llvmc> is a configurable driver for invoking other LLVM (and non-LLVM) tools
+in order to compile, optimize and link software for multiple languages. For
+those familiar with FSF's B<gcc> tool, it is very similar.  Please note that
+B<llvmc> is considered an experimental tool.
+
+=head1 OPTIONS
+
+=head2 Built-in Options
+
+LLVMC has some built-in options that can't be overridden in the
+configuration libraries.
+
+=over
+
+=item B<-o> I<filename>
+
+Output file name.
+
+=item B<-x> I<language>
+
+Specify the language of the following input files until the next B<-x>
+option.
+
+=item B<-load> I<plugin_name>
+
+Load the specified plugin DLL. Example:
+S<-load $LLVM_DIR/Release/lib/LLVMCSimple.so>.
+
+=item B<-v> or B<--verbose>
+
+Enable verbose mode, i.e. print out all executed commands.
+
+=item B<--check-graph>
+
+Check the compilation for common errors like mismatched output/input language
+names, multiple default edges and cycles. Because of plugins, these checks can't
+be performed at compile-time. Exit with code zero if no errors were found, and
+return the number of found errors otherwise. Hidden option, useful for debugging
+LLVMC plugins.
+
+=item B<--view-graph>
+
+Show a graphical representation of the compilation graph and exit. Requires that
+you have I<dot> and I<gv> programs installed. Hidden option, useful for
+debugging LLVMC plugins.
+
+=item B<--write-graph>
+
+Write a I<compilation-graph.dot> file in the current directory with the
+compilation graph description in Graphviz format (identical to the file used by
+the B<--view-graph> option). The B<-o> option can be used to set the output file
+name. Hidden option, useful for debugging LLVMC plugins.
+
+=item B<--save-temps>
+
+Write temporary files to the current directory and do not delete them on
+exit. This option can also take an argument: the I<--save-temps=obj> switch will
+write files into the directory specified with the I<-o> option. The
+I<--save-temps=cwd> and I<--save-temps> switches are both synonyms for the
+default behaviour.
+
+=item B<--temp-dir> I<directory>
+
+Store temporary files in the given directory. This directory is deleted on exit
+unless I<--save-temps> is specified. If I<--save-temps=obj> is also specified,
+I<--temp-dir> is given the precedence.
+
+=item B<-help>
+
+Print a summary of command-line options and exit.
+
+=item B<-help-hidden>
+
+Print a summary of command-line options and exit. Print help even for
+options intended for developers.
+
+=item B<--version>
+
+Print version information and exit.
+
+=item B<@>I<file>
+
+Read command-line options from I<file>. The options read are inserted
+in place of the original @I<file> option. If I<file> does not exist, or
+cannot be read, then the option will be treated literally, and not
+removed.
+
+Options in I<file> are separated by whitespace. A whitespace character
+may be included in an option by surrounding the entire option in
+either single or double quotes. Any character (including a backslash)
+may be included by prefixing the character to be included with a
+backslash. The file may itself contain additional @I<file> options;
+any such options will be processed recursively.
+
+
+=back
+
+
+=head2 Control Options
+
+By default, LLVMC is built with some standard configuration libraries
+that define the following options:
+
+=over
+
+=item B<-clang>
+
+Use Clang instead of llvm-gcc.
+
+=item B<-opt>
+
+Enable optimization passes with B<opt>. To pass options to the B<opt> program
+use the B<-Wo,> option.
+
+=item B<-I> I<directory>
+
+Add a directory to the header file search path.
+
+=item B<-L> I<directory>
+
+Add I<directory> to the library search path.
+
+=item B<-F> I<directory>
+
+Add I<directory> to the framework search path.
+
+=item B<-l>I<name>
+
+Link in the library libI<name>.[bc | a | so].  This library should
+be a bitcode library.
+
+=item B<-framework> I<name>
+
+Link in the library libI<name>.[bc | a | so].  This library should
+be a bitcode library.
+
+=item B<-emit-llvm>
+
+Output LLVM bitcode (with B<-c>) or assembly (with B<-S>) instead of native
+object (or assembly).  If B<-emit-llvm> is given without either B<-c> or B<-S>
+it has no effect.
+
+=item B<-Wa>
+
+Pass options to assembler.
+
+=item B<-Wl>
+
+Pass options to linker.
+
+=item B<-Wo>
+
+Pass options to opt.
+
+=item B<-Wllc>
+
+Pass options to llc (code generator).
+
+=back
+
+=head1 EXIT STATUS
+
+If B<llvmc> succeeds, it will exit with code 0.  Otherwise, if an
+error occurs, it will exit with a non-zero value. If one of the
+compilation tools returns a non-zero status, pending actions will be
+discarded and B<llvmc> will return the same result code as the failing
+compilation tool.
+
+=head1 SEE ALSO
+
+L<llvm-gcc|llvmgcc>, L<llvm-g++|llvmgxx>, L<llvm-as|llvm-as>,
+L<llvm-dis|llvm-dis>, L<llc|llc>, L<llvm-link|llvm-link>
+
+=head1 AUTHORS
+
+Maintained by the LLVM Team (L<http://llvm.org>).
+
+=cut