From bfbe6851afd2eb5b40b23dcb7ce6a9422b0f17fa Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 28 Aug 2024 16:10:48 -0400
Subject: build: Move the "compiler works at all" test earlier

---
 build/flags.mk | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'build/flags.mk')

diff --git a/build/flags.mk b/build/flags.mk
index ad2a75e..504df63 100644
--- a/build/flags.mk
+++ b/build/flags.mk
@@ -123,6 +123,13 @@ gen/flags.mk: ${AUTO_FLAGS}
 	${VCAT} $@
 .PHONY: gen/flags.mk
 
+# Check that the C compiler works at all
+cc::
+	@build/cc.sh -q build/empty.c -o gen/.cc.out; \
+	    ret=$$?; \
+	    build/msg-if.sh "[ CC ] build/empty.c" test $$ret -eq 0; \
+	    exit $$ret
+
 # The short name of the config test
 SLUG = ${@:gen/%.mk=%}
 # The source file to build
@@ -130,7 +137,8 @@ CSRC = build/${SLUG}.c
 # The hidden output file name
 OUT = ${SLUG:flags/%=gen/flags/.%.out}
 
-${AUTO_FLAGS}::
+${AUTO_FLAGS}: cc
 	@${MKDIR} ${@D}
 	@build/flags-if.sh ${CSRC} -o ${OUT} >$@ 2>$@.log; \
 	    build/msg-if.sh "[ CC ] ${SLUG}.c" test $$? -eq 0
+.PHONY: ${AUTO_FLAGS}
-- 
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