Pass through some more Mac OS X linker options.

llvm-svn: 56853

    - llvmc2, save me!

llvm-svn: 56169

llvm-svn: 55630

 - Support environment variable CCC_LANGUAGES to control which
   languages clang is invoked on. If unset clang is invoked for all
   languages, otherwise CCC_LANGUAGES should be a comma separated list
   of the languages (as accepted by -x) for which clang should be
   invoked. Useful for only building C and Objective-C parts of a
   project with clang, for example.

 - Add environment variable CCC_FALLBACK. If set and non-empty then
   ccc will try and compile using the regular compiler if compilation
   with clang fails.

 - A few other tweaks to add options, flush stdout, recognize .mm as
   objective-c++, and infer languages for compile+link style
   invocations.

llvm-svn: 55547

 - Use CCC_ECHO to control echoing behavior (default is on, set to ''
   or unset to disable)
 - Get 'clang','llc','as','cc','ld' executables from environment. 'cc'
   and 'ld' are fetched through CCC_CC and CCC_LD respectively -- to
   support make CC=ccc -- the others are through their upcased
   versions.
 - Add CCC_NATIVE mode.
   o This uses llc and as to generate native object files; allowing
     more drop-in replacement of gcc.
   o Disabled by default, but should eventually be default.
   o Allow --emit-llvm in CCC_NATIVE mode to override. Essentially
     this makes ccc more like a drop in replacement for llvm-gcc.
 - Prevent explicit -x <language> options from annoying clang.

llvm-svn: 55260

llvm-svn: 54623

llvm-svn: 54622

Patch by Zhongxing Xu!

llvm-svn: 53976

llvm-svn: 53144

since handling this correctly is quite complex, and on some platforms  
requires additional -D options and on some implies linking against a  
different libc, but this works better than just ignoring the option.

The other change passes the -x option across to clang, which allows  
compiling .c files as Objective-C and so on.  For some reason a lot of  
configure scripts seem to be under the misguided impression that this  
is a sensible thing to do."

Patch by David Chisnall!

llvm-svn: 52579

Patch by Filipe Cabecinhas

llvm-svn: 52417

llvm-svn: 50056

llvm-svn: 49956

- ccc: quote shell metacharacters in command line to ease copy-and-paste

llvm-svn: 49213

Disable internalize. Unfortunately, the configure scripts are not ready for some link time optimizations.

llvm-svn: 47682

llvm-svn: 47185

llvm-svn: 46819

  not in the current directory. This doesn't work with VPATH builds in
  autotooled builds.
- ccc now creates object files without an extension.
- Return exit code 1 if code > 255.

Patch by Torok!

llvm-svn: 46689

llvm-svn: 46675

llvm-svn: 46626

llvm-svn: 46501

llvm-svn: 46353

llvm-svn: 46107

llvm-svn: 45809