On 22/07/2013 11:56 PM, Jonathan Liu wrote:
On 22/07/2013 2:12 AM, Khem Raj wrote:
On Jul 21, 2013, at 3:07 AM, Jonathan Liu <net...@gmail.com> wrote:
libtool is picking up libstdc++.so from /usr/lib when trying to link
libasan due to libstdc++.la containing libdir="/usr/lib". If compiling
Can you also see if this change works on target and SDK environments ?
I have build the Yocto Build Appliance (qemux86_64) successfully using
poky master 31e6eee860b5f9f4ac9ef0889bcff5648de6e3f9 with this patch.
Also, I have built gcc (for qemux86) successfully from the Yocto Build
Appliance (qemux86_64) by manually cloning poky master
31e6eee860b5f9f4ac9ef0889bcff5648de6e3f9 with this patch and building
GCC 4.8.1 through Hob (usually the build appliance uses an older git
clone of poky that uses GCC 4.7).
Interestingly the build appliance has /usr/lib/libstdc++.so present so
perhaps this libasan linking issue also affects the build appliance.
Confirmed. Building GCC 4.8.1 for qemux86 inside qemux86_64 Yocto Build
Appliance fails with "/usr/lib/libstdc++.so: could not read symbols:
File in wrong format" without this patch.
The patch only modifies the libtool (2.2) script included with GCC
sources used for building GCC and not the libtool (2.4) that is used
elsewhere so its effect should only be limited to building GCC.
I am not sure how to test this change in SDK environment. Could you
elaborate?
Regards,
Jonathan
for x86 and the host has 64-bit /usr/lib/libstdc++.so, the compilation
fails linking libasan with:
/usr/lib/libstdc++.so: could not read symbols: File in wrong format
To resolve this, patch libtool to look for the library in the path the
.la is contained in rather than use the libdir which usually points to
a host path.
[YOCTO #4879]
Signed-off-by: Jonathan Liu <net...@gmail.com>
---
meta/recipes-devtools/gcc/gcc-4.8.inc | 1 +
.../gcc/gcc-4.8/0041-libtool-avoid-libdir.patch | 19
+++++++++++++++++++
2 files changed, 20 insertions(+)
create mode 100644
meta/recipes-devtools/gcc/gcc-4.8/0041-libtool-avoid-libdir.patch
diff --git a/meta/recipes-devtools/gcc/gcc-4.8.inc
b/meta/recipes-devtools/gcc/gcc-4.8.inc
index dafa241..42355f2 100644
--- a/meta/recipes-devtools/gcc/gcc-4.8.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.8.inc
@@ -70,6 +70,7 @@ SRC_URI =
"${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
file://0038-gcc-4.8-build-args.patch \
file://0039-gcc-4.8-PR57717.patch \
file://0040-fix-g++-sysroot.patch \
+ file://0041-libtool-avoid-libdir.patch \
"
SRC_URI[md5sum] = "3b2386c114cd74185aa3754b58a79304"
SRC_URI[sha256sum] =
"545b44be3ad9f2c4e90e6880f5c9d4f0a8f0e5f67e1ffb0d45da9fa01bb05813"
diff --git
a/meta/recipes-devtools/gcc/gcc-4.8/0041-libtool-avoid-libdir.patch
b/meta/recipes-devtools/gcc/gcc-4.8/0041-libtool-avoid-libdir.patch
new file mode 100644
index 0000000..2dd9610
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.8/0041-libtool-avoid-libdir.patch
@@ -0,0 +1,19 @@
+Avoid using libdir from .la which usually points to a host path
+
+Upstream-Status: Inappropriate [embedded specific]
+Signed-off-by: Jonathan Liu <net...@gmail.com>
+
+diff --git a/ltmain.sh b/ltmain.sh
+index a03433f..1902a90 100644
+--- a/ltmain.sh
++++ b/ltmain.sh
+@@ -5628,6 +5628,9 @@ func_mode_link ()
+ absdir="$abs_ladir"
+ libdir="$abs_ladir"
+ else
++ # Instead of using libdir from .la which usually points to
a host path,
++ # use the path the .la is contained in.
++ libdir="$abs_ladir"
+ dir="$libdir"
+ absdir="$libdir"
+ fi
--
1.8.3.2
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