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.c...@windriver.com>
---
 meta/classes/populate_sdk_ext.bbclass | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/meta/classes/populate_sdk_ext.bbclass 
b/meta/classes/populate_sdk_ext.bbclass
index dc2c58e..2fc4c11 100644
--- a/meta/classes/populate_sdk_ext.bbclass
+++ b/meta/classes/populate_sdk_ext.bbclass
@@ -168,7 +168,9 @@ 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
+       buildtools_path=`ls -t1 
${SDK_DEPLOY}/${DISTRO}-${TCLIBC}-${SDK_ARCH}-buildtools-tarball-${TUNE_PKGARCH}-buildtools-nativesdk-standalone-*.sh
 | head -n1`
+       install $buildtools_path ${SDK_OUTPUT}/${SDKPATH}
 
        install ${SDK_DEPLOY}/${BUILD_ARCH}-nativesdk-libc.tar.bz2 
${SDK_OUTPUT}/${SDKPATH}
 }
-- 
1.9.1

-- 
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