On 19 Mar 2008, at 22:03, Alexander Hansen wrote:
> Jérôme LELONG wrote:
>> Hi,
>>
>> For a few days now, the version 3.1.2-1 of fftw3 has been available.
>> Building the package requires gcc4.3. The compilation ends up with
>> the following error
>>
>> gcc -std=gnu99 -dynamiclib ${wl}-undefined ${wl}dynamic_lookup -o
>> .libs/libfftw3_threads.3.1.2.dylib .libs/api.o .libs/conf.o
>> .libs/threads.o .libs/dft-vrank-geq1.o .libs/ct.o
>> .libs/rdft-vrank-geq1.o .libs/hc2hc.o .libs/vrank-geq1-rdft2.o
>> .libs/f77api.o -L/sw/lib -lm -malign-double -install_name
>> /sw/lib/libfftw3_threads.3.dylib -Wl,-compatibility_version -Wl,5
>> -Wl,-current_version -Wl,5.2
>> /usr/bin/ld: unknown flag: -compatibility_version
>>
>>
>> I have to build the package manually and it turrns out that to solve
>> this problem, it is sufficient to replace the file ltmain.sh from the
>> fftw3 source by the one given by the package libtool14 (installed in
>> /sw/share/libtool). Without this modification the generated
>> version of
>> libtool is not compatible with gcc4.3 concerning the
>> compatibility_version flag.
>>
>> Actually the same problem occurs with libksba8.
>>
>> What is the good way to solve this issue ? Thanks for any help.
>> Jérôme.
>>
>>
> libksba8 built fine for me, as did fftw3 (10.5.2) What OS version are
> you on, anyway?
>
> gcc43 in Fink doesn't install a "gcc" executable in the PATH to avoid
> colliding with that from Xcode. In any case, gcc from Xcode and that
> from gcc43 both appear to understand the -compatibility_version flag.
>
Right, but for ld the corresponding flag is -dylib_
compatibility_version...
So this version of libtool is making an error prefixing "-
compatibility_version"
with "_Wl," , which means "pass directly to the linker"
For a way to fix this without a wholesale replacement of ltmain.sh,
cf e.g.
plplot.info, the lines
# removing '${wl}' seems necessary (at least on 10.4) for gfortran
linking, and to do no harm for the others ..
sed -i.bak -e '/compatibility_/s,\${wl},,g' */ltmain.sh
in the patchscript.
JF Mertens
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