postinst-intercepts, qemu.bbclass: fix segfaults in postinstalls

Postinstalls that use qemu are throwing a segmentation fault when
building for qemux86-64 on a 64bit host (it might also happen for
qemux86 if building on a 32bit host but I didn't test). It looks like
qemu looks for ld.so.cache which is not found because it is generated
after rootfs_(rpm|ipk|deb)_do_rootfs is called and then it tries to load
libraries from the default paths (which are the host's). In order to
avoid this, pass the LD_LIBRARY_PATH explicitly to the target's dynamic
loader.

(From OE-Core rev: 48e8b613b3f5c7b1d917bf3147606d44072ce49e)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 4 insertions, 2 deletions

diff --git a/scripts/postinst-intercepts/update_font_cache b/scripts/postinst-intercepts/update_font_cache
index ad1bab32be..afc93d80a5 100644
--- a/scripts/postinst-intercepts/update_font_cache
+++ b/scripts/postinst-intercepts/update_font_cache
@@ -1,5 +1,6 @@
 #!/bin/sh
 
-PSEUDO_UNLOAD=1 qemuwrapper -L $D $D${bindir}/fc-cache --sysroot=$D >/dev/null 2>&1
+PSEUDO_UNLOAD=1 qemuwrapper -L $D -E LD_LIBRARY_PATH=$D/${libdir}:$D/${base_libdir}\
+                                        $D${bindir}/fc-cache --sysroot=$D >/dev/null 2>&1
 
 
diff --git a/scripts/postinst-intercepts/update_pixbuf_cache b/scripts/postinst-intercepts/update_pixbuf_cache
index 9134529273..bd94fe88dd 100644
--- a/scripts/postinst-intercepts/update_pixbuf_cache
+++ b/scripts/postinst-intercepts/update_pixbuf_cache
@@ -2,7 +2,8 @@
 
 export GDK_PIXBUF_MODULEDIR=$D${libdir}/gdk-pixbuf-2.0/2.10.0/loaders
 
-PSEUDO_UNLOAD=1 qemuwrapper -L $D $D${bindir}/gdk-pixbuf-query-loaders \
+PSEUDO_UNLOAD=1 qemuwrapper -L $D -E LD_LIBRARY_PATH=$D/${libdir}:$D/${base_libdir}\
+    $D${bindir}/gdk-pixbuf-query-loaders \
     >$GDK_PIXBUF_MODULEDIR/../loaders.cache 2>/dev/null && \
     sed -i -e "s:$D::g" $GDK_PIXBUF_MODULEDIR/../loaders.cache