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Diffstat (limited to 'common/m4/as-compiler-flag.m4')
| -rw-r--r-- | common/m4/as-compiler-flag.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/common/m4/as-compiler-flag.m4 b/common/m4/as-compiler-flag.m4 index 882a4c7..8bb853a 100644 --- a/common/m4/as-compiler-flag.m4 +++ b/common/m4/as-compiler-flag.m4 @@ -62,3 +62,35 @@ AC_DEFUN([AS_CXX_COMPILER_FLAG], AC_MSG_RESULT([$flag_ok]) ]) +dnl AS_OBJC_COMPILER_FLAG(CPPFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) +dnl Tries to compile with the given CPPFLAGS. +dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags, +dnl and ACTION-IF-NOT-ACCEPTED otherwise. + +AC_DEFUN([AS_OBJC_COMPILER_FLAG], +[ + AC_REQUIRE([AC_PROG_OBJC]) + + AC_MSG_CHECKING([to see if Objective C compiler understands $1]) + + save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS $1" + + AC_LANG_PUSH([Objective C]) + + AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no]) + CPPFLAGS="$save_CPPFLAGS" + + if test "X$flag_ok" = Xyes ; then + $2 + true + else + $3 + true + fi + + AC_LANG_POP([Objective C]) + + AC_MSG_RESULT([$flag_ok]) +]) + |