From 8908752a259c03cc5c33b6fa83db5b3d884ed72b Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Thu, 24 Aug 2023 01:49:48 -0700
Subject: [PATCH] Makefile: Detect compiler in makefile

Add compiler specific options based on detected compiler gcc/clang
---
 src/Makefile | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/Makefile b/src/Makefile
index ef915f1..eb58ef5 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -115,7 +115,23 @@ PREFIX ?= /usr/local
 LIBDIRNAME ?= /lib/faketime
 PLATFORM ?=$(shell uname)
 
-CFLAGS += -std=gnu99 -Wall -Wextra -Werror -Wno-nonnull-compare -DFAKE_PTHREAD -DFAKE_STAT -DFAKE_UTIME -DFAKE_SLEEP -DFAKE_TIMERS -DFAKE_INTERNAL_CALLS -fPIC -DPREFIX='"'$(PREFIX)'"' -DLIBDIRNAME='"'$(LIBDIRNAME)'"' $(FAKETIME_COMPILE_CFLAGS)
+ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1)
+COMPILER := clang
+else
+COMPILER := gcc
+endif
+export COMPILER
+
+CFLAGS += -std=gnu99 -Wall -Wextra -Werror -DFAKE_PTHREAD -DFAKE_STAT -DFAKE_UTIME -DFAKE_SLEEP -DFAKE_TIMERS -DFAKE_INTERNAL_CALLS -fPIC -DPREFIX='"'$(PREFIX)'"' -DLIBDIRNAME='"'$(LIBDIRNAME)'"' $(FAKETIME_COMPILE_CFLAGS)
+
+ifeq ($(COMPILER),clang)
+CFLAGS += -Wno-tautological-pointer-compare
+endif
+
+ifeq ($(COMPILER),gcc)
+CFLAGS += -Wno-nonnull-compare
+endif
+
 ifeq ($(PLATFORM),SunOS)
 CFLAGS += -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
 endif