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Date: Sun, 17 Nov 2013 19:32:21 +0100
From: Michael Olbrich <m.olbrich@pengutronix.de>
Message-ID: <20131117183221.GV31417@pengutronix.de>
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Subject: Re: [ptxdist] Linker error sqlite3
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Hi,

On Wed, Nov 06, 2013 at 10:24:25AM +0000, Gieseler, Christian wrote:
> i am using ptxdist-2013.05.0 and wanted to enable sqlite3 as extension in php5.3.10.
> There seems to be a linker error.
> 
> /opt/OSELAS.Toolchain-2012.12.1/arm-v5te-linux-gnueabi/gcc-4.7.2-glibc-2.16.0-binutils-2.22-kernel-3.6-sanitized/bin/../lib/gcc/arm-v5te-linux-gnueabi/4.7.2/../../../../arm-v5te-linux-gnueabi/bin/ld: note: 'pthread_mutex_trylock@@GLIBC_2.4' is defined in DSO /opt/OSELAS.Toolchain-2012.12.1/arm-v5te-linux-gnueabi/gcc-4.7.2-glibc-2.16.0-binutils-2.22-kernel-3.6-sanitized/bin/../sysroot-arm-v5te-linux-gnueabi/lib/libpthread.so.0 so try adding it to the linker command line
> /opt/OSELAS.Toolchain-2012.12.1/arm-v5te-linux-gnueabi/gcc-4.7.2-glibc-2.16.0-binutils-2.22-kernel-3.6-sanitized/bin/../sysroot-arm-v5te-linux-gnueabi/lib/libpthread.so.0: could not read symbols: Invalid operation
> collect2: error: ld returned 1 exit status
> make[1]: *** [sapi/cli/php] Error 1
> 
> Has the configure script to be modified to include lpthread? Thanks for any advice/help.

This is caused by a different default option of the linker. Add
"-Wl,--copy-dt-needed-entries" to TARGET_EXTRA_LDFLAGS.

Michael

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