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>

1 files changed, 6 insertions, 1 deletions

diff --git a/meta/classes/qemu.bbclass b/meta/classes/qemu.bbclass
index 0e71d6aaad..930c6b082e 100644
--- a/meta/classes/qemu.bbclass
+++ b/meta/classes/qemu.bbclass
@@ -29,4 +29,9 @@ def qemu_run_binary(data, rootfs_path, binary):
     if qemu_binary == "qemu-allarch":
         qemu_binary = "qemuwrapper"
 
-    return "PSEUDO_UNLOAD=1 " + qemu_binary + " -L " + rootfs_path + " " + rootfs_path + binary
+    libdir = rootfs_path + data.getVar("libdir", False)
+    base_libdir = rootfs_path + data.getVar("base_libdir", False)
+
+    return "PSEUDO_UNLOAD=1 " + qemu_binary + " -L " + rootfs_path\
+            + " -E LD_LIBRARY_PATH=" + libdir + ":" + base_libdir + " "\
+            + rootfs_path + binary