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Re: Native GCC 4.9.0 Build Fails Building/Linking libgcc_s_so with Undefined Symbol
- From: Cyd Haselton <chaselton at gmail dot com>
- To: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Sun, 23 Nov 2014 14:47:20 -0600
- Subject: Re: Native GCC 4.9.0 Build Fails Building/Linking libgcc_s_so with Undefined Symbol
- Authentication-results: sourceware.org; auth=none
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On Fri, Nov 21, 2014 at 4:47 PM, Cyd Haselton <chaselton@gmail.com> wrote:
> On Wed, Nov 19, 2014 at 12:51 PM, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
>> On 19 November 2014 18:08, Cyd Haselton wrote:
>>> In another attempt to fix this problem, I grepped for dlopen in the
>>> build directoryand ran across the following:
>>>
>>> From ./gcc/config.log
>>>
>>> configure:27894: checking for library containing dlopen
>>> configure:27925: gcc --sysroot=/usr/gcc-4.8/sysroot -o conftest -Wall
>>> -mandroid -mbionic -static-libstdc++ -static-libgcc
>>> -Wl,--dynamic-linker=/system/bin/linker -lc -ldl -lgcc -lm -lsupc++
>>> -lgnustl_shared conftest.c >&5
>>> configure:27925: $? = 0
>>> configure:27942: result: none required:
>>>
>>
>> It's already linking to libdl, look at the command it used.
>
> FYI this issue was temporarily fixed by specifying --disable-shared in
> the top-level configure...after running make distclean.
>
> Unfortunately the build fails again soon after libgcc, when
> configuring libstdc++, with thw following error:
>
> configure[11845]: awk not found
> configure: error: Link tests are not allowed after GCC_NO_EXECUTABLE
>
> I'm using gawk and have AWK=/bin/gawk.
After unsuccessfully trying to fix this issue, I ran make distclean
and started over with the previous configure options.
After make failed (again at libgcc) I navigated to the gcc dir in the
build folder and ran configure.
../../gcc-4.9.1/gcc/configure --prefix=/usr/gcc-4.9
--build=arm-linux-androideabi --host=arm-linux-androideabi
--target=arm-linux-androideabi
--with-build-libsubdir=/usr/gcc-4.8/sysroot/usr/lib
--with-native-system-header-dir=/usr/gcc-4.8/sysroot/usr/include
--with-build-sysroot=/usr/gcc-4.8/sysroot
--with-sysroot=/usr/gcc-4.8/sysroot LIBS=-ldl
LDFLAGS=-Wl,--dynamic-linker=/system/bin/linker
-L/usr/gcc-4.8/sysroot/usr/lib
The last several lines in the configure result indicate that ldl is
still not being picked up as the library containing dlopen; configure
still decides 'none needed'
I've minimal experience with configure code; how is gcc/configure
determining if ldl contains dlopen and how would I run configure
and/or specify env variables so that configure picks up ldl?
(FYI, I did objdump -tT libdl.so...dlopen is there)