1 files changed, 5 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index a3d191a2bf..5e1c479c12 100644
--- a/configure.in
+++ b/configure.in
@@ -289,6 +289,11 @@ AC_PROG_CXX
 AC_PROG_GCC_TRADITIONAL
 AC_SUBST(GCC)
 if test "$GCC" = yes; then
+    AC_TRY_LINK([
+      @%:@if defined __llvm__ && !defined __clang__
+      @%:@error llvm-gcc has ended
+      @%:@endif
+    ], [], [], [AC_MSG_ERROR(llvm-gcc has ended)])
     linker_flag=-Wl,
     : ${optflags=-O3}
     AS_CASE(["$target_os"], [linux*|darwin*], [: ${debugflags=-ggdb}])