Add a HAVE_MACH_MACH_H #define to detect the presence of the mach/mach.h

header file on Darwin.

llvm-svn: 30319

llvm/autoconf/configure.ac

@@ -619,7 +619,7 @@ AC_HEADER_TIME
 AC_CHECK_HEADERS([dlfcn.h execinfo.h fcntl.h inttypes.h limits.h link.h])
 AC_CHECK_HEADERS([malloc.h setjmp.h signal.h stdint.h unistd.h utime.h])
 AC_CHECK_HEADERS([windows.h sys/mman.h sys/param.h sys/resource.h sys/time.h])
-AC_CHECK_HEADERS([sys/types.h malloc/malloc.h])
+AC_CHECK_HEADERS([sys/types.h malloc/malloc.h mach/mach.h])
 if test "$ENABLE_THREADS" -eq 1 ; then
   AC_CHECK_HEADERS(pthread.h)
 fi

llvm/configure

@@ -28833,7 +28833,8 @@ done
 
 
 
-for ac_header in sys/types.h malloc/malloc.h
+
+for ac_header in sys/types.h malloc/malloc.h mach/mach.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then

llvm/include/llvm/Config/config.h.in

@@ -200,6 +200,9 @@
 /* Define if lt_dlopen() is available on this platform */
 #undef HAVE_LT_DLOPEN
 
+/* Define to 1 if you have the <mach/mach.h> header file. */
+#undef HAVE_MACH_MACH_H
+
 /* Define to 1 if you have the <mach-o/dyld.h> header file. */
 #undef HAVE_MACH_O_DYLD_H