From 70f806b821f603cafb6f634c93a6729dc21bb354 Mon Sep 17 00:00:00 2001
From: Jared Van Bortel <jared@nomic.ai>
Date: Wed, 13 Dec 2023 12:10:10 -0500
Subject: build : detect host compiler and cuda compiler separately (#4414)

---
 scripts/get-flags.mk | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 scripts/get-flags.mk

(limited to 'scripts')

diff --git a/scripts/get-flags.mk b/scripts/get-flags.mk
new file mode 100644
index 00000000..596d7ead
--- /dev/null
+++ b/scripts/get-flags.mk
@@ -0,0 +1,38 @@
+ifeq '' '$(findstring clang,$(shell $(GF_CC) --version))'
+	GF_CC_IS_GCC = 1
+	GF_CC_VER := $(shell { $(GF_CC) -dumpfullversion 2>/dev/null || $(GF_CC) -dumpversion; } | awk -F. '{ printf("%02d%02d%02d", $$1, $$2, $$3) }')
+else
+	GF_CC_IS_CLANG = 1
+	ifeq '' '$(findstring Apple,$(shell $(GF_CC) --version))'
+		GF_CC_IS_LLVM_CLANG = 1
+	else
+		GF_CC_IS_APPLE_CLANG = 1
+	endif
+	GF_CC_VER := \
+		$(shell $(GF_CC) --version | sed -n 's/^.* version \([0-9.]*\).*$$/\1/p' \
+		| awk -F. '{ printf("%02d%02d%02d", $$1, $$2, $$3) }')
+endif
+
+ifeq ($(GF_CC_IS_CLANG), 1)
+	# clang options
+	GF_CFLAGS   = -Wunreachable-code-break -Wunreachable-code-return
+	GF_CXXFLAGS = -Wunreachable-code-break -Wunreachable-code-return -Wmissing-prototypes -Wextra-semi
+
+	ifneq '' '$(and $(GF_CC_IS_LLVM_CLANG),$(filter 1,$(shell expr $(GF_CC_VER) \>= 030800)))'
+		GF_CFLAGS += -Wdouble-promotion
+	endif
+	ifneq '' '$(and $(GF_CC_IS_APPLE_CLANG),$(filter 1,$(shell expr $(GF_CC_VER) \>= 070300)))'
+		GF_CFLAGS += -Wdouble-promotion
+	endif
+else
+	# gcc options
+	GF_CFLAGS   = -Wdouble-promotion
+	GF_CXXFLAGS = -Wno-array-bounds
+
+	ifeq ($(shell expr $(GF_CC_VER) \>= 070100), 1)
+		GF_CXXFLAGS += -Wno-format-truncation
+	endif
+	ifeq ($(shell expr $(GF_CC_VER) \>= 080100), 1)
+		GF_CXXFLAGS += -Wextra-semi
+	endif
+endif
-- 
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