libmakepkg: add framework for autodeps

Signed-off-by: Allan McRae <allan@archlinux.org>

etc/makepkg.conf.in

@@ -76,7 +76,8 @@ BUILDENV=(!distcc color !ccache check !sign)
 #   These are default values for the options=() settings
 #########################################################################
 #
-# Makepkg defaults: OPTIONS=(!strip docs libtool staticlibs emptydirs !zipman !purge !debug !lto)
+# Makepkg defaults:
+# OPTIONS=(!strip docs libtool staticlibs emptydirs !zipman !purge !debug !lto !autodeps)
 #  A negated option will do the opposite of the comments below.
 #
 #-- strip:      Strip symbols from binaries/libraries
@@ -88,8 +89,9 @@ BUILDENV=(!distcc color !ccache check !sign)
 #-- purge:      Remove files specified by PURGE_TARGETS
 #-- debug:      Add debugging flags as specified in DEBUG_* variables
 #-- lto:        Add compile flags for building with link time optimization
+#-- autodeps:   Automatically add depends/provides
 #
-OPTIONS=(strip docs libtool staticlibs emptydirs zipman purge !debug !lto)
+OPTIONS=(strip docs libtool staticlibs emptydirs zipman purge !debug !lto !autodeps)
 
 #-- File integrity checks to use. Valid: ck, md5, sha1, sha224, sha256, sha384, sha512, b2
 INTEGRITY_CHECK=(ck)

scripts/libmakepkg/autodep.sh.in

@@ -0,0 +1,38 @@
+#!/bin/bash
+#
+#   autodep.sh - functions for automatically adding depends/provides
+#
+#   Copyright (c) 2021 Pacman Development Team <pacman-dev@lists.archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_AUTODEP_SH" ]] && return
+LIBMAKEPKG_AUTODEP_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+declare -a autodep_functions
+
+for lib in "$LIBRARY/autodep/"*.sh; do
+	source "$lib"
+done
+
+readonly -a autodep_functions
+
+generate_autodeps() {
+	for func in ${autodep_functions[@]}; do
+		$func
+	done
+}

scripts/makepkg.sh.in

@@ -480,6 +480,7 @@ write_pkginfo() {
 	local size=$(dirsize)
 
 	merge_arch_attrs
+	generate_autodeps
 
 	printf "# Generated by makepkg %s\n" "$makepkg_version"
 	printf "# using %s\n" "$(fakeroot -v)"