From 37caa3d71fd8bb4d0d9204e4a2f5cac234fa25fd Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Mon, 29 Apr 2024 15:30:39 -0400
Subject: build: Replace `make config` with a `./configure` script

This lets us do more traditional out-of-tree builds like

    $ ../path/to/bfs/configure
    $ make

The .mk files are moved from ./config to ./build, mostly so that
./configure will auto-complete easily.
---
 build/pkgs.mk | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 build/pkgs.mk

(limited to 'build/pkgs.mk')

diff --git a/build/pkgs.mk b/build/pkgs.mk
new file mode 100644
index 0000000..51ca664
--- /dev/null
+++ b/build/pkgs.mk
@@ -0,0 +1,36 @@
+# Copyright © Tavian Barnes <tavianator@tavianator.com>
+# SPDX-License-Identifier: 0BSD
+
+# Makefile that generates gen/pkgs.mk
+
+include build/prelude.mk
+include gen/vars.mk
+include gen/flags.mk
+include build/exports.mk
+
+HEADERS := ${ALL_PKGS:%=gen/use/%.h}
+
+gen/pkgs.mk: ${HEADERS}
+	${MSG} "[ GEN] $@"
+	printf '# %s\n' "$@" >$@
+	gen() { \
+	    printf 'PKGS := %s\n' "$$*"; \
+	    printf 'CFLAGS += %s\n' "$$(build/pkgconf.sh --cflags "$$@")"; \
+	    printf 'LDFLAGS += %s\n' "$$(build/pkgconf.sh --ldflags "$$@")"; \
+	    printf 'LDLIBS := %s $${LDLIBS}\n' "$$(build/pkgconf.sh --ldlibs "$$@")"; \
+	}; \
+	gen $$(grep -l ' true$$' ${.ALLSRC} | sed 's|.*/\(.*\)\.h|\1|') >>$@
+	${VCAT} $@
+
+.PHONY: gen/pkgs.mk
+
+# Convert gen/use/foo.h to foo
+PKG = ${@:gen/use/%.h=%}
+
+${HEADERS}::
+	${MKDIR} ${@D}
+	if build/define-if.sh use/${PKG} build/pkgconf.sh ${PKG} >$@ 2>$@.log; then \
+	    test "${IS_V}" || printf '[ CC ] %-${MSG_WIDTH}s  ✔\n' use/${PKG}.c; \
+	else \
+	    test "${IS_V}" || printf '[ CC ] %-${MSG_WIDTH}s  ✘\n' use/${PKG}.c; \
+	fi
-- 
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