[OE-core] [PATCH] eglibc-initial: Ensure symlinks point to the correct location when built from sstate cache

[Richard Purdie]

If the sstate files are installed into a sysroot from the sstate cache,
the directory to the main sysroot can change and the symlinks aren't
adjusted to account for this. This is a problem specific to the toolchain
bootstrap process. This patch adds up a function to recreate the
symlinks, hence ensuring they always point at the correct location.

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
diff --git a/meta/recipes-core/eglibc/eglibc-initial.inc b/meta/recipes-core/eglibc/eglibc-initial.inc
index 448f73a..9062516 100644
--- a/meta/recipes-core/eglibc/eglibc-initial.inc
+++ b/meta/recipes-core/eglibc/eglibc-initial.inc
@@ -60,4 +60,16 @@ do_siteconfig () {
 	:
 }
 
+SSTATEPOSTINSTFUNCS += "eglibcinitial_sstate_postinst"
+eglibcinitial_sstate_postinst() {
+	if [ "${BB_CURRENTTASK}" = "populate_sysroot" -o "${BB_CURRENTTASK}" = "populate_sysroot_setscene" ]
+	then
+		# Recreate the symlinks to ensure they point to the correct location
+		for t in linux asm asm-generic; do
+			rm -f ${STAGING_DIR_TCBOOTSTRAP}${includedir}/$t
+			ln -s ${STAGING_DIR_TARGET}${includedir}/$t ${STAGING_DIR_TCBOOTSTRAP}${includedir}/
+		done
+	fi
+}
+
 do_populate_sysroot[sstate-outputdirs] = "${STAGING_DIR_TCBOOTSTRAP}"