classes/populate_sdk_base: enable adding custom commands to SDK install script

Add an SDK_POST_INSTALL_COMMAND variable which allows additional
commands to be added towards the end of the SDK install script, for e.g.
additional processing that needs to be done as part of installing the
SDK.

(From OE-Core rev: 10df0718d6a626d99beb68cde8d914ee0820d7eb)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/populate_sdk_base.bbclass

@@ -51,6 +51,7 @@ PID = "${@os.getpid()}"
 EXCLUDE_FROM_WORLD = "1"
 
 SDK_PACKAGING_FUNC ?= "create_shar"
+SDK_POST_INSTALL_COMMAND ?= ""
 
 SDK_MANIFEST = "${SDK_DEPLOY}/${TOOLCHAIN_OUTPUTNAME}.manifest"
 python write_target_sdk_manifest () {
@@ -142,10 +143,16 @@ fakeroot create_shar() {
 	# copy in the template shar extractor script
 	cp ${COREBASE}/meta/files/toolchain-shar-template.sh ${SDK_DEPLOY}/${TOOLCHAIN_OUTPUTNAME}.sh
 
+	cat << "EOF" > ${T}/post_install_command
+${SDK_POST_INSTALL_COMMAND}
+EOF
+	sed -i -e '/@SDK_POST_INSTALL_COMMAND@/r ${T}/post_install_command' ${SDK_DEPLOY}/${TOOLCHAIN_OUTPUTNAME}.sh
+
 	# substitute variables
 	sed -i -e 's#@SDK_ARCH@#${SDK_ARCH}#g' \
 		-e 's#@SDKPATH@#${SDKPATH}#g' \
 		-e 's#@REAL_MULTIMACH_TARGET_SYS@#${REAL_MULTIMACH_TARGET_SYS}#g' \
+		-e '/@SDK_POST_INSTALL_COMMAND@/d' \
 		${SDK_DEPLOY}/${TOOLCHAIN_OUTPUTNAME}.sh
 
 	# add execution permission

meta/files/toolchain-shar-template.sh

@@ -169,6 +169,8 @@ done
 
 echo done
 
+@SDK_POST_INSTALL_COMMAND@
+
 # delete the relocating script, so that user is forced to re-run the installer
 # if he/she wants another location for the sdk
 if [ $savescripts = 0 ] ; then