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-rw-r--r--lib/erl_interface/aclocal.m411
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/erl_interface/aclocal.m4 b/lib/erl_interface/aclocal.m4
index a7a8ceb99a..34237fcb43 100644
--- a/lib/erl_interface/aclocal.m4
+++ b/lib/erl_interface/aclocal.m4
@@ -213,8 +213,10 @@ AC_DEFUN(LM_FIND_EMU_CC,
ac_cv_prog_emu_cc,
[
AC_TRY_COMPILE([],[
-#ifdef __llvm__
-#error "llvm is currently unable to compile beam_emu.c"
+#if defined(__clang_major__) && __clang_major__ >= 3
+ /* clang 3.x or later is fine */
+#elif defined(__llvm__)
+#error "this version of llvm is unable to correctly compile beam_emu.c"
#endif
__label__ lbl1;
__label__ lbl2;
@@ -256,6 +258,11 @@ if test $ac_cv_prog_emu_cc != no; then
CFLAGS=""
CPPFLAGS=""
AC_TRY_COMPILE([],[
+#if defined(__clang_major__) && __clang_major__ >= 3
+ /* clang 3.x or later is fine */
+#elif defined(__llvm__)
+#error "this version of llvm is unable to correctly compile beam_emu.c"
+#endif
__label__ lbl1;
__label__ lbl2;
int x = magic();