kumquat-buildroot/package/tar/tar.mk
Thomas De Schampheleire fd10b42ab8 dependencies: build a host-tar if no suitable tar can be found
Some toolchains, like the one built with buildroot itself, use hardlinks (for
example to link between the c++ and g++ binary). Unpacking such a toolchain
with the --strip-components options does not work correctly if the system tar
is too old (<1.17). Even recent releases of RedHat/CentOS still ship with
tar 1.15.

This patch checks for a suitable tar version (tar 1.17+) on the host system,
and adds host-tar to the host dependencies if none can be found.

host-tar is download and extracted as cpio.gz instead of tar.gz, to prevent
chicken-egg problem.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
v4 Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2012-02-09 22:59:21 +01:00

29 lines
726 B
Makefile

#############################################################
#
# tar
#
#############################################################
TAR_VERSION = 1.26
TAR_SITE = $(BR2_GNU_MIRROR)/tar
# Prefer full-blown tar over buybox's version
ifeq ($(BR2_PACKAGE_BUSYBOX),y)
TAR_DEPENDENCIES += busybox
HOST_TAR_DEPENDENCIES =
endif
$(eval $(call AUTOTARGETS))
# host-tar: use cpio.gz instead of tar.gz to prevent chicken-egg problem
# of needing tar to build tar.
HOST_TAR_SOURCE = tar-$(TAR_VERSION).cpio.gz
define HOST_TAR_EXTRACT_CMDS
mkdir -p $(@D)
cd $(@D) && \
$(INFLATE.gz) $(DL_DIR)/$(HOST_TAR_SOURCE) | cpio -i
mv $(@D)/tar-$(TAR_VERSION)/* $(@D)
rmdir $(@D)/tar-$(TAR_VERSION)
endef
$(eval $(call AUTOTARGETS,host))