diff options
Diffstat (limited to 'build/auto.mk')
| -rw-r--r-- | build/auto.mk | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/build/auto.mk b/build/auto.mk new file mode 100644 index 0000000..9cdf9e3 --- /dev/null +++ b/build/auto.mk @@ -0,0 +1,54 @@ +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# Makefile that generates gen/auto.mk + +include build/prelude.mk +include gen/vars.mk +include gen/early.mk +include gen/late.mk +include build/exports.mk + +# Auto-detected flags +AUTO_FLAGS := \ + gen/flags/std.mk \ + gen/flags/bind-now.mk \ + gen/flags/deps.mk \ + gen/flags/pthread.mk \ + gen/flags/Wformat.mk \ + gen/flags/Wimplicit-fallthrough.mk \ + gen/flags/Wimplicit.mk \ + gen/flags/Wmissing-decls.mk \ + gen/flags/Wmissing-var-decls.mk \ + gen/flags/Wshadow.mk \ + gen/flags/Wsign-compare.mk \ + gen/flags/Wstrict-prototypes.mk \ + gen/flags/Wundef-prefix.mk + +gen/auto.mk: ${AUTO_FLAGS} + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @cat $^ >>$@ + @cat ${^:%=%.log} >gen/flags.log + ${VCAT} $@ +.PHONY: gen/auto.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 $$ret + +# The short name of the config test +SLUG = ${@:gen/%.mk=%} +# The source file to build +CSRC = build/${SLUG}.c +# The hidden output file name +OUT = ${SLUG:flags/%=gen/flags/.%.out} + +${AUTO_FLAGS}: cc + @${MKDIR} ${@D} + @build/flags-if.sh ${CSRC} -o ${OUT} >$@ 2>$@.log; \ + build/msg-if.sh "[ CC ] ${SLUG}.c" test $$? -eq 0 +.PHONY: ${AUTO_FLAGS} |