From 3866058ef15b6ae6f4ff48e088428b46bcc43fa1 Mon Sep 17 00:00:00 2001 From: David Carrillo-Cisneros Date: Sun, 27 Aug 2017 00:54:40 -0700 Subject: perf tools: Robustify detection of clang binary Prior to this patch, make scripts tested for CLANG with ifeq ($(CC), clang), failing to detect CLANG binaries with different names. Fix it by testing for the existence of __clang__ macro in the list of compiler defined macros. Signed-off-by: David Carrillo-Cisneros Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Paul Turner Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20170827075442.108534-5-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/scripts/Makefile.include | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools/scripts') diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index ccad8ce925e4..1e8b6116ba3c 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -39,7 +39,9 @@ EXTRA_WARNINGS += -Wundef EXTRA_WARNINGS += -Wwrite-strings EXTRA_WARNINGS += -Wformat -ifneq ($(CC), clang) +CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?) + +ifeq ($(CC_NO_CLANG), 1) EXTRA_WARNINGS += -Wstrict-aliasing=3 endif -- cgit v1.2.3-59-g8ed1b