Ticket #31585: erlang.portfile.patch

Portfile

@@ -110 +110 @@
     # This is a workaround.
     #patchfiles-append   patch-erts_emulator_sys_unix_ddll.c.diff
     configure.ldflags-append -framework CoreFoundation
+
+    # We must build Erlang on LLVM with -O0 (see http://llvm.org/bugs/show_bug.cgi?id=7883 
+    # for details).
+    if {${configure.compiler} == "clang"} {
+        configure.compiler llvm-gcc-4.2
+    }
+
+    configure.cflags-delete -O2
+    configure.cxxflags-delete -O2
+    configure.cflags-append -O0
+    configure.cxxflags-append -O0
 }
 
 platform macosx {