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| author | Tavian Barnes <tavianator@tavianator.com> | 2025-08-31 10:30:59 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@tavianator.com> | 2025-08-31 11:32:16 -0400 |
| commit | 703412368c8afc811f2cec47684054e3875b607b (patch) | |
| tree | 4900ecc1cd54a57f9e797de53319b3f4da3b6842 /build/flags.mk | |
| parent | c8a3dc9edf2500bfdb5c231c36e77424728a6365 (diff) | |
| download | bfs-703412368c8afc811f2cec47684054e3875b607b.tar.xz | |
Diffstat (limited to 'build/flags.mk')
| -rw-r--r-- | build/flags.mk | 61 |
1 files changed, 13 insertions, 48 deletions
diff --git a/build/flags.mk b/build/flags.mk index 00876d1..c64a80b 100644 --- a/build/flags.mk +++ b/build/flags.mk @@ -1,7 +1,7 @@ # Copyright © Tavian Barnes <tavianator@tavianator.com> # SPDX-License-Identifier: 0BSD -# Makefile that generates gen/flags.mk +# Makefile that generates gen/{early,late}.mk include build/prelude.mk include gen/vars.mk @@ -79,32 +79,10 @@ _CFLAGS += ${LTO_CFLAGS,${_LTO}} # Configurable flags CFLAGS ?= -g -Wall -# Add the configurable flags last so they can override ours -_CPPFLAGS += ${CPPFLAGS} ${EXTRA_CPPFLAGS} -_CFLAGS += ${CFLAGS} ${EXTRA_CFLAGS} -_LDFLAGS += ${LDFLAGS} ${EXTRA_LDFLAGS} -# (except LDLIBS, as earlier libs override later ones) -_LDLIBS := ${LDLIBS} ${EXTRA_LDLIBS} ${_LDLIBS} - include build/exports.mk -# Conditionally-supported 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/flags.mk: ${AUTO_FLAGS} +# Saves the internal flags +gen/early.mk:: ${MSG} "[ GEN] $@" @printf '# %s\n' "$@" >$@ @printf '_CPPFLAGS := %s\n' "$$XCPPFLAGS" >>$@ @@ -113,27 +91,14 @@ gen/flags.mk: ${AUTO_FLAGS} @printf '_LDLIBS := %s\n' "$$XLDLIBS" >>$@ @printf 'NOLIBS := %s\n' "$$XNOLIBS" >>$@ @test "${OS}-${SAN}" != FreeBSD-y || printf 'POSTLINK = elfctl -e +noaslr $$@\n' >>$@ - @cat $^ >>$@ - @cat ${^:%=%.log} >gen/flags.log ${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 $$ret - -# The short name of the config test -SLUG = ${@:gen/%.mk=%} -# The source file to build -CSRC = build/${SLUG}.c -# The hidden output file name -OUT = ${SLUG:flags/%=gen/flags/.%.out} - -${AUTO_FLAGS}: cc - @${MKDIR} ${@D} - @build/flags-if.sh ${CSRC} -o ${OUT} >$@ 2>$@.log; \ - build/msg-if.sh "[ CC ] ${SLUG}.c" test $$? -eq 0 -.PHONY: ${AUTO_FLAGS} + +# Save explicit flags from ./configure separately so they can override the rest +gen/late.mk:: + ${MSG} "[ GEN] $@" + @printf '# %s\n' "$@" >$@ + @printf '_CPPFLAGS += %s\n' "$$CONF_CPPFLAGS" >>$@ + @printf '_CFLAGS += %s\n' "$$CONF_CFLAGS" >>$@ + @printf '_LDFLAGS += %s\n' "$$CONF_LDFLAGS" >>$@ + @printf '_LDLIBS := %s $${_LDLIBS}\n' "$$CONF_LDLIBS" >>$@ + ${VCAT} $@ |