kumquat-buildroot/support/dependencies/check-host-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

10 lines
256 B
Makefile

TAR ?= tar
ifeq (,$(call suitable-host-package,tar,$(TAR)))
DEPENDENCIES_HOST_PREREQ += host-tar
TAR = $(HOST_DIR)/usr/bin/tar
endif
# Since TAR is at least 1.17, it will certainly support --strip-components
TAR_STRIP_COMPONENTS = --strip-components