[OE-core] [PATCH 2/2] populate_sdk_ext: install the latest buildtools-tarball

[Chen Qi]

If we do `bitbake buildtools-tarball' and then after one day do `bitbake
core-image-minimal -c populate_sdk_ext', we would meet errors like below.

| install: cannot stat '/buildarea2/chenqi/poky/build-systemd/tmp/deploy/sdk/
poky-glibc-x86_64-buildtools-tarball-core2-64-buildtools-nativesdk-standalone
-1.8+snapshot-20150429.sh': No such file or directory

The problem is that the output name for buildtools-tarball has ${DATE} in it.
So if populate_sdk_ext task is executed but buildtools-tarball is not rebuilt,
the above error appears.

Instead of hardcoding ${DISTRO_VERSION} which consists of ${DATE} in the
install_tools() function, we should find the latest buildtools-tarball based
on the modification time and install it.

[YOCTO #7674]

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/classes/populate_sdk_ext.bbclass | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/meta/classes/populate_sdk_ext.bbclass b/meta/classes/populate_sdk_ext.bbclass
index 7925ece..0e4ee31 100644
--- a/meta/classes/populate_sdk_ext.bbclass
+++ b/meta/classes/populate_sdk_ext.bbclass
@@ -188,7 +188,17 @@ install_tools() {
 	ln -sr ${SDK_OUTPUT}/${SDKPATH}/${scriptrelpath}/recipetool ${SDK_OUTPUT}/${SDKPATHNATIVE}${bindir_nativesdk}/recipetool
 	touch ${SDK_OUTPUT}/${SDKPATH}/.devtoolbase
 
-	install ${SDK_DEPLOY}/${DISTRO}-${TCLIBC}-${SDK_ARCH}-buildtools-tarball-${TUNE_PKGARCH}-buildtools-nativesdk-standalone-${DISTRO_VERSION}.sh ${SDK_OUTPUT}/${SDKPATH}
+	# find latest buildtools-tarball and install it
+	maxseconds=0
+	buildtools_path=""
+	for f in `ls ${SDK_DEPLOY}/${DISTRO}-${TCLIBC}-${SDK_ARCH}-buildtools-tarball-${TUNE_PKGARCH}-buildtools-nativesdk-standalone-*.sh`; do
+		seconds=`stat -c "%Y" $f`
+		if [ $seconds -gt $maxseconds ]; then
+			maxseconds=$seconds
+			buildtools_path="$f"
+		fi
+	done
+	install $buildtools_path ${SDK_OUTPUT}/${SDKPATH}
 
 	install ${SDK_DEPLOY}/${BUILD_ARCH}-nativesdk-libc.tar.bz2 ${SDK_OUTPUT}/${SDKPATH}
 }
-- 
1.9.1