Re: [gentoo-embedded] Problems compiling sandbox with uclibc

[Ed W]

Ed W wrote:
> Hi, I'm unable to compile sandbox with uclibc on x86.  The error
> occurs in the configure stage as follows:
>
> ...snip...
> checking CFLAGS for maximum warnings... no, unknown
> checking whether C compiler accepts -fdata-sections... no
> checking whether C compiler accepts -ffunction-sections... no
> checking whether the linker accepts -Wl,--as-needed... no
> checking whether the linker accepts -Wl,--gc-sections... no
> checking whether the linker accepts
> -Wl,--version-script,conftest.map... no
> checking whether the linker accepts -Wl,-M,conftest.map... no
> configure: error: unable to find a linker flag for versioning
>
> !!! Please attach the following file when seeking support:
> !!!
> /var/tmp/portage/sys-apps/sandbox-1.6-r2/work/build-default/config.log
> *
> * ERROR: sys-apps/sandbox-1.6-r2 failed.
>
>
> Checking the config.log it appears to be because of a broken
> definition which is split over two lines
>
> #define LIBC_VERSION "libc.so.0
> | ld-uClibc.so.0"
>
>
> The test causing this is:
>
> LIBC_VERSION=$(
>       $READELF -d libctest | \
>       $EGREP NEEDED.*libc\\.so | \
>       $AWK '{print $NF}' | sed -e 's:\[::' -e 's:\]::'
> )
>
>
> and readelf gives me:
>
> 0x00000001 (NEEDED)                     Shared library: [libc.so.0]
> 0x00000001 (NEEDED)                     Shared library: [ld-uClibc.so.0]
>
> Which in turn leads to the multiple line output
>
>
> However, I can't actually see where LIBC_VERSION is even used?  Is
> there someone here who understands what is happening and can recommend
> the best fix? (Remove the whole test?)
>
> How come no one else is seeing this?  What does readelf give for
> others using uclibc?
>
> Ed W
>


Does this patch feel right:

--- sandbox-1.6/configure.old    2009-06-28 18:28:04 +0000
+++ sandbox-1.6/configure    2009-06-28 18:29:22 +0000
@@ -15911,6 +15911,7 @@
 LIBC_VERSION=$(
     $READELF -d libctest | \
     $EGREP NEEDED.*libc\\.so | \
+    $EGREP -v \\[ld- | \
     $AWK '{print $NF}' | sed -e 's:\[::' -e 's:\]::'
 )
 rm -f libctest*


http://bugs.gentoo.org/show_bug.cgi?id=275725