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# Copyright © Tavian Barnes <tavianator@tavianator.com>
# SPDX-License-Identifier: 0BSD
# Makefile that implements `./configure`
include build/prelude.mk
include build/exports.mk
# All configuration steps
config: gen/config.mk
.PHONY: config
# Makefile fragments generated by `./configure`
MKS := \
gen/vars.mk \
gen/flags.mk \
gen/pkgs.mk
# The main configuration file, which includes the others
gen/config.mk: ${MKS} gen/config.h
${MSG} "[ GEN] $@"
@printf '# %s\n' "$@" >$@
@printf 'include %s\n' ${MKS} >>$@
${VCAT} gen/config.mk
.PHONY: gen/config.mk
# Saves the configurable variables
gen/vars.mk::
@${MKDIR} ${@D}
${MSG} "[ GEN] $@"
@printf '# %s\n' "$@" >$@
@printf 'PREFIX := %s\n' "$$XPREFIX" >>$@
@printf 'MANDIR := %s\n' "$$XMANDIR" >>$@
@printf 'OS := %s\n' "$${OS:-$$(uname)}" >>$@
@printf 'CC := %s\n' "$$XCC" >>$@
@printf 'INSTALL := %s\n' "$$XINSTALL" >>$@
@printf 'MKDIR := %s\n' "$$XMKDIR" >>$@
@printf 'PKG_CONFIG := %s\n' "$$XPKG_CONFIG" >>$@
@printf 'RM := %s\n' "$$XRM" >>$@
@test -z "$$VERSION" || printf 'export VERSION=%s\n' "$$VERSION" >>$@
${VCAT} $@
# Sets the build flags. This depends on vars.mk and uses a recursive make so
# that the default flags can depend on variables like ${OS}.
gen/flags.mk: gen/vars.mk
@+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/flags.mk $@
.PHONY: gen/flags.mk
# Auto-detect dependencies and their build flags
gen/pkgs.mk: gen/flags.mk
@+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/pkgs.mk $@
.PHONY: gen/pkgs.mk
# Compile-time feature detection
gen/config.h: gen/pkgs.mk
@+XMAKEFLAGS="$$MAKEFLAGS" ${MAKE} -sf build/header.mk $@
.PHONY: gen/config.h
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