"This maps the -pthread option to -lpthread - this isn't 100% correct,

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

clang/utils/ccc

@@ -139,6 +139,10 @@ def main(args):
             if arg == '-Os': arg = '-O2'
             link_opts.append(arg)
 
+        # Enable threads
+        if arg == '-pthread':
+          link_opts.append('-lpthread')
+
         # Input files
         if arg == '-filelist':
             f = open(args[i+1])
@@ -148,6 +152,8 @@ def main(args):
             i += 1
         if arg == '-x':
             language = args[i+1]
+            compile_opts.append(arg)
+            compile_opts.append(args[i+1])
             i += 1
         if arg[0] != '-':
             files.append(arg)