make: hopefully fix the modules again for Fedora

- their `cc --version` doesn't start with "gcc"
- modifying CFLAGS at this point doesn't work,
  so we modify BUILD_CFLAGS instead (_vomit_)

diff --git a/platform.mk b/platform.mk
index d42c66e4ce6429c442f58ac57052be1dad3705e1..170269ca93b374aa642fa5671bdda3f2e2869caa 100644 (file)
--- a/platform.mk
+++ b/platform.mk
@@ -55,9 +55,10 @@ else
                ifeq ($(UNAME),Linux)
                        LDFLAGS += -ldl
                endif
-               ifeq ($(firstword $(shell $(CC) --version)),gcc)
-                       # Otherwise Fedora is making kresd symbols inaccessible for modules?
-                       CFLAGS += -rdynamic
+               ifeq (GCC,$(shell $(CC) --version | grep -q '\<GCC\>' && echo GCC))
+                       # Otherwise Fedora is making kresd symbols inaccessible for modules.
+                       # Clang doesn't support this flag, so we hackily detect gcc.
+                       BUILD_CFLAGS += -rdynamic
                endif
        endif
 endif