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authorGravatar Thomas De Schampheleire <patrickdepinguin+buildroot@gmail.com>2012-02-08 17:22:20 +0100
committerGravatar Peter Korsgaard <jacmet@sunsite.dk>2012-02-09 22:59:21 +0100
commitfd10b42ab8db0cd5d2f3c9076d54244c6e0e60a8 (patch)
treeb3a8b79de79bc23d14a69c401d77eb5bacee1f95 /support/dependencies/check-host-tar.mk
parent1bbf39bd733007f2bda799622147924008a5d44c (diff)
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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>
Diffstat (limited to 'support/dependencies/check-host-tar.mk')
-rw-r--r--support/dependencies/check-host-tar.mk9
1 files changed, 9 insertions, 0 deletions
diff --git a/support/dependencies/check-host-tar.mk b/support/dependencies/check-host-tar.mk
new file mode 100644
index 0000000000..010bde7a51
--- /dev/null
+++ b/support/dependencies/check-host-tar.mk
@@ -0,0 +1,9 @@
+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