From: Gwendal Grignou <gwendal@chromium.org>
Date: Wed, 15 May 2024 21:30:59 +0000 (-0700)
Subject: Makefile: Do not call gcc directly
X-Git-Tag: mdadm-4.4~141
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=027b2d37a8cd56973d117107acc25a64cfe0a92f;p=thirdparty%2Fmdadm.git

Makefile: Do not call gcc directly

When mdadm is compiled with clang, direct gcc will fail.
Make sure to use $(CC) variable instead.

Note that Clang does not support --help=warnings,
--print-diagnostic-options should be used instead.
So with Clang, the compilation will go through, but the
extra warning flags will never be added.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
---

diff --git a/Makefile b/Makefile
index 446710bd..3fe0a053 100644
--- a/Makefile
+++ b/Makefile
@@ -56,21 +56,21 @@ CWFLAGS += -Wp -O3
 endif
 
 ifeq ($(origin FALLTHROUGH), undefined)
-	FALLTHROUGH := $(shell gcc -Q --help=warnings 2>&1 | grep "implicit-fallthrough" | wc -l)
+	FALLTHROUGH := $(shell $(CC) -Q --help=warnings 2>&1 | grep "implicit-fallthrough" | wc -l)
 	ifneq "$(FALLTHROUGH)"  "0"
 	CWFLAGS += -Wimplicit-fallthrough=0
 	endif
 endif
 
 ifeq ($(origin FORMATOVERFLOW), undefined)
-	FORMATOVERFLOW := $(shell gcc -Q --help=warnings 2>&1 | grep "format-overflow" | wc -l)
+	FORMATOVERFLOW := $(shell $(CC) -Q --help=warnings 2>&1 | grep "format-overflow" | wc -l)
 	ifneq "$(FORMATOVERFLOW)"  "0"
 	CWFLAGS += -Wformat-overflow
 	endif
 endif
 
 ifeq ($(origin STRINGOPOVERFLOW), undefined)
-	STRINGOPOVERFLOW := $(shell gcc -Q --help=warnings 2>&1 | grep "stringop-overflow" | wc -l)
+	STRINGOPOVERFLOW := $(shell $(CC) -Q --help=warnings 2>&1 | grep "stringop-overflow" | wc -l)
 	ifneq "$(STRINGOPOVERFLOW)"  "0"
 	CWFLAGS += -Wstringop-overflow
 	endif