package/openrc: new package

This adds openrc init system package. This performs default openrc
installation with openrc-init that acts as pid1.

MKPKGCONFIG=no:
openrc does not use pkg-config per se, if MKPKGCONFIG is enabled,
it will just install *.pc files on rootfs for other programs to
find librc and libeinfo. These libs expose C api to control openrc
(al rc-* functions use it). From the looks of it, these libs would
be usefull if user wanted to write his own programs to manage
services, and vast majority of people using openrc won't need it.
Also, that's the reason why there is not INSTALL_STAGING=yes.

Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1615,6 +1615,7 @@ F:	board/altera/socrates_cyclone5/
 F:	board/pine64/rock64
 F:	configs/rock64_defconfig
 F:	configs/socrates_cyclone5_defconfig
+F:	package/openrc/
 
 N:	Michel Stempin <michel.stempin@wanadoo.fr>
 F:	board/licheepi/

package/Config.in

@@ -2195,6 +2195,7 @@ menu "System tools"
 	source "package/ncdu/Config.in"
 	source "package/numactl/Config.in"
 	source "package/nut/Config.in"
+	source "package/openrc/Config.in"
 	source "package/openvmtools/Config.in"
 	source "package/pamtester/Config.in"
 	source "package/polkit/Config.in"

package/openrc/Config.in

@@ -0,0 +1,18 @@
+config BR2_PACKAGE_OPENRC
+	bool "openrc"
+	select BR2_PACKAGE_NCURSES
+	help
+	  Init that works on top of pid 1 (for example
+	  openrc-init). By default it does quite a lot on startup
+	  (like setting hwclock, mounting directories, configuring
+	  interfaces and so on). So for this init to properly work you
+	  need at least these tools on the root filesystem (default
+	  busybox configuration provides them all):
+
+	  swapon, fsck, hwclock, getty, login, grep, mount, coreutils,
+	  procps, modprobe (kmod), net-tools
+
+	  Number of tools may be decreased by removing services that
+	  use them.
+
+	  https://github.com/OpenRC/openrc

package/openrc/openrc.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256	c99488ca54f2b795328d07bbd456ade49b571136bba7501f7eaaeb1ca9f9ecc4	openrc-0.41.2.tar.gz
+sha256	96862463f4e77e2508e4fc2c83773fd24807cb699368b63fd93a5e2b466dd624	LICENSE

package/openrc/openrc.mk

@@ -0,0 +1,45 @@
+################################################################################
+#
+# openrc
+#
+################################################################################
+
+OPENRC_VERSION = 0.41.2
+OPENRC_SITE = $(call github,OpenRC,openrc,$(OPENRC_VERSION))
+OPENRC_LICENSE = BSD-2-Clause
+OPENRC_LICENSE_FILES = LICENSE
+
+OPENRC_DEPENDENCIES = ncurses
+
+# set LIBNAME so openrc puts files in proper directories and sets proper
+# paths in installed files. Since in buildroot /lib64 and /lib32 always
+# points to /lib, it's safe to hardcode it to "lib"
+OPENRC_MAKE_OPTS = \
+	LIBNAME=lib \
+	LIBEXECDIR=/usr/libexec/rc \
+	MKPKGCONFIG=no \
+	MKSELINUX=no \
+	MKSYSVINIT=yes \
+	BRANDING="Buildroot $(BR2_VERSION_FULL)" \
+	CC=$(TARGET_CC)
+
+ifeq ($(BR2_SHARED_LIBS),y)
+OPENRC_MAKE_OPTS += MKSTATICLIBS=no
+else
+OPENRC_MAKE_OPTS += MKSTATICLIBS=yes
+endif
+
+define OPENRC_BUILD_CMDS
+	$(MAKE) $(OPENRC_MAKE_OPTS) -C $(@D)
+endef
+
+define OPENRC_INSTALL_TARGET_CMDS
+	$(MAKE) $(OPENRC_MAKE_OPTS) DESTDIR=$(TARGET_DIR) -C $(@D) install
+endef
+
+define OPENRC_REMOVE_UNNEEDED
+	$(RM) -r $(TARGET_DIR)/usr/share/openrc
+endef
+OPENRC_TARGET_FINALIZE_HOOKS += OPENRC_REMOVE_UNNEEDED
+
+$(eval $(generic-package))