[Clfs-dev] multilib 10.(12 14) mpfr/mpc 32_bit

[Pierre Lorenzon]

From: Chris Staub <chris at beaker67.com>
Subject: Re: [Clfs-dev] multilib 10.(12 14) mpfr/mpc 32_bit
Date: Wed, 08 Jan 2014 12:31:14 -0500

> On 01/08/14 12:07, Pierre Lorenzon wrote:
>>
>> Hi,
>>
>> I exprerimented following problem :
>>
>> checking for __gmpz_init in -lgmp... no configure: error:
>> libgmp not found or uses a different ABI (including static vs
>> shared).  Please read the INSTALL file -- see "In case of
>> problem".  Both with mpfr and mpc when compiling for 32 bits
>> libraries. 64 bits seems to make no problem.
>>
>> I solved the problem for mpfr by passing the --with-gmp=/usr to
>> the configure script and will see if it works as well for
>> mpc. The system behaves as if the code was linked against a non
>> suitable gmp. The one in cross-tools ? I cannot figure out
>> myself what is the problem. Indeed le linking options passed to
>> ld seems to say that the libraries have to be found in /usr/lib
>> or /lib. Why seems this flag to be inefficient at this point :
>> I do not know even if the error reported in the config.log file
>> has to delal with the linking stage :
>>
>> configure:13214: checking for __gmpz_init in -lgmp
>> configure:13239: gcc -isystem /usr/include -m32 -o conftest -g
>> -O2 -Wl,-rpath-link,/usr/lib:/lib -m32 conftest.c -lgmp -lm >&5
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
>> skipping incompatible
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../libgmp.so
>> when searching for -lgmp
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
>> skipping incompatible
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../libgmp.a
>> when searching for -lgmp
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
>> skipping incompatible /tools/lib64/libgmp.so when searching for
>> -lgmp
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
>> skipping incompatible /tools/lib64/libgmp.a when searching for
>> -lgmp
>> /tools/lib64/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/bin/ld:
>> cannot find -lgmp
>> collect2: error: ld returned 1 exit status
>> configure:13239: $? = 1
>> configure: failed program was:
>>
>> Regards
>>
>> Pierre
> 
> What is the result of this:
> 
> echo 'main(){}' > dummy.c
> gcc ${BUILD32} dummy.c
> readelf -l a.out | grep ': /lib'

  Empty ! So certainly bad ! You are certainly right something
  went wrong when adjusting the tool chain. I'll have a look at
  that !


  Regards 

  Pierre





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