Fix EKOPath build

CMakeLists.txt

@@ -218,15 +218,19 @@ if(NOT WIN32)
 		check_symbol_exists(utimes "sys/time.h" INNOEXTRACT_HAVE_UTIMES)
 	endif()
 	
-	check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP16 "__builtin_bswap16(0)")
+	if(CMAKE_CXX_COMPILER_ID STREQUAL "PathScale")
+		# EKOPath recognizes these but then fails to link
+	else()
+		check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP16 "__builtin_bswap16(0)")
+		check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP32 "__builtin_bswap32(0)")
+		check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP64 "__builtin_bswap64(0)")
+	endif()
 	if(NOT INNOEXTRACT_HAVE_BUILTIN_BSWAP16)
 		check_symbol_exists(bswap_16 "byteswap.h" INNOEXTRACT_HAVE_BSWAP_16)
 	endif()
-	check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP32 "__builtin_bswap32(0)")
 	if(NOT INNOEXTRACT_HAVE_BUILTIN_BSWAP32)
 		check_symbol_exists(bswap_32 "byteswap.h" INNOEXTRACT_HAVE_BSWAP_32)
 	endif()
-	check_builtin(INNOEXTRACT_HAVE_BUILTIN_BSWAP64 "__builtin_bswap64(0)")
 	if(NOT INNOEXTRACT_HAVE_BUILTIN_BSWAP64)
 		check_symbol_exists(bswap_64 "byteswap.h" INNOEXTRACT_HAVE_BSWAP_64)
 	endif()