make : simplify Makefile (ggml-org#1147)

* Simplify Architecture specific in Makefile

* unified OS specific check

Author: alonfaraj

Makefile

@@ -57,19 +57,7 @@ endif
 
 # OS specific
 # TODO: support Windows
-ifeq ($(UNAME_S),Linux)
-	CFLAGS   += -pthread
-	CXXFLAGS += -pthread
-endif
-ifeq ($(UNAME_S),Darwin)
-	CFLAGS   += -pthread
-	CXXFLAGS += -pthread
-endif
-ifeq ($(UNAME_S),FreeBSD)
-	CFLAGS   += -pthread
-	CXXFLAGS += -pthread
-endif
-ifeq ($(UNAME_S),Haiku)
+ifeq ($(filter $(UNAME_S),Linux Darwin FreeBSD Haiku),$(UNAME_S))
 	CFLAGS   += -pthread
 	CXXFLAGS += -pthread
 endif
@@ -79,60 +67,38 @@ endif
 #       feel free to update the Makefile for your architecture and send a pull request or issue
 ifeq ($(UNAME_M),$(filter $(UNAME_M),x86_64 i686))
 	ifeq ($(UNAME_S),Darwin)
-		CFLAGS += -mf16c
-		AVX1_M := $(shell sysctl machdep.cpu.features)
-		ifneq (,$(findstring FMA,$(AVX1_M)))
-			CFLAGS += -mfma
-		endif
-		ifneq (,$(findstring AVX1.0,$(AVX1_M)))
-			CFLAGS += -mavx
-		endif
-		AVX2_M := $(shell sysctl machdep.cpu.leaf7_features)
-		ifneq (,$(findstring AVX2,$(AVX2_M)))
-			CFLAGS += -mavx2
-		endif
+		CPUINFO_CMD := sysctl machdep.cpu.features
 	else ifeq ($(UNAME_S),Linux)
-		AVX2_M := $(shell grep "avx2 " /proc/cpuinfo)
+		CPUINFO_CMD := cat /proc/cpuinfo
+	else ifeq ($(UNAME_S),Haiku)
+		CPUINFO_CMD := sysinfo -cpu
+	endif
+
+	ifdef CPUINFO_CMD
+		AVX2_M := $(shell $(CPUINFO_CMD) | grep -m 1 "avx2 ")
 		ifneq (,$(findstring avx2,$(AVX2_M)))
 			CFLAGS += -mavx2
 		endif
-		FMA_M := $(shell grep "fma " /proc/cpuinfo)
+
+		FMA_M := $(shell $(CPUINFO_CMD) | grep -m 1 "fma ")
 		ifneq (,$(findstring fma,$(FMA_M)))
 			CFLAGS += -mfma
 		endif
-		F16C_M := $(shell grep "f16c " /proc/cpuinfo)
+
+		F16C_M := $(shell $(CPUINFO_CMD) | grep -m 1 "f16c ")
 		ifneq (,$(findstring f16c,$(F16C_M)))
 			CFLAGS += -mf16c
 
-			AVX1_M := $(shell grep "avx " /proc/cpuinfo)
+			AVX1_M := $(shell $(CPUINFO_CMD) | grep -m 1 "avx ")
 			ifneq (,$(findstring avx,$(AVX1_M)))
 				CFLAGS += -mavx
 			endif
 		endif
-		SSE3_M := $(shell grep "sse3 " /proc/cpuinfo)
+
+		SSE3_M := $(shell $(CPUINFO_CMD) | grep -m 1 "sse3 ")
 		ifneq (,$(findstring sse3,$(SSE3_M)))
 			CFLAGS += -msse3
 		endif
-	else ifeq ($(UNAME_S),Haiku)
-		AVX2_M := $(shell sysinfo -cpu | grep "AVX2 ")
-		ifneq (,$(findstring avx2,$(AVX2_M)))
-			CFLAGS += -mavx2
-		endif
-		FMA_M := $(shell sysinfo -cpu | grep "FMA ")
-		ifneq (,$(findstring fma,$(FMA_M)))
-			CFLAGS += -mfma
-		endif
-		F16C_M := $(shell sysinfo -cpu | grep "F16C ")
-		ifneq (,$(findstring f16c,$(F16C_M)))
-			CFLAGS += -mf16c
-
-			AVX1_M := $(shell sysinfo -cpu | grep "AVX ")
-			ifneq (,$(findstring avx,$(AVX1_M)))
-				CFLAGS += -mavx
-			endif
-		endif
-	else
-		CFLAGS += -mfma -mf16c -mavx -mavx2
 	endif
 endif
 ifeq ($(UNAME_M),amd64)