--- a/libgcc/unwind-dw2-fde-dip.c
+++ b/libgcc/unwind-dw2-fde-dip.c
@@ -46,33 +46,13 @@
 #include "unwind-compat.h"
 #include "gthr.h"
 
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
-	|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(__BIONIC__)
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(__FreeBSD__) && __FreeBSD__ >= 7
-# define ElfW __ElfN
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(__OpenBSD__)
-# define ElfW(type) Elf_##type
-# define USE_PT_GNU_EH_FRAME
-#endif
-
-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
-    && defined(TARGET_DL_ITERATE_PHDR) \
-    && defined(__sun__) && defined(__svr4__)
+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR)
 # define USE_PT_GNU_EH_FRAME
+# ifdef __OpenBSD__
+#  define ElfW(type) Elf_##type
+# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
+#  define ElfW __ElfN
+# endif
 #endif
 
 #if defined(USE_PT_GNU_EH_FRAME)