[Bug bootstrap/37330] New: mpfr & 32/64 multilib issue

[olivier dot raoult at st dot com]

Hi,

My mpfr and gmp 32/64 bits libraries are installed respectively in $PREFIX/lib
and $PREFIX/lib64.
'configure' is called as following:
  configure .. --with-gmp-lib=$PREFIX/lib --with-mpfr-lib=$PREFIX/lib ...
It produces a Makefile with the following line:
  HOST_GMPLIBS = -L$PREFIX/lib -L$PREFIX/lib -lmpfr -lgmp
As far as I can see, there is no specific management of multilib context and
'make bootstrap' fails on mpfr link error.

As a workaround, I used the 64bits path for gmp and the 32bits path for mpfr:
  configure .. --with-gmp-lib=$PREFIX/lib64 --with-mpfr-lib=$PREFIX/lib ...
The Makefile line becomes:
  HOST_GMPLIBS = -L$PREFIX/lib64 -L$PREFIX/lib -lmpfr -lgmp
Then it works, even on a full 32 bits context (ie. i686-unknown-pc-linux) but
it's ugly, doesn't it? ;-)

Rgds,
  Olivier


-- 
   Summary: mpfr & 32/64 multilib issue
   Product: gcc
   Version: 4.3.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
    ReportedBy: olivier dot raoult at st dot com
 GCC build triplet: x86_64-unknown-linux-gnu (RedHat 3/4)
  GCC host triplet: x86_64-unknown-linux-gnu (RedHat 3/4)
GCC target triplet: x86_64-unknown-linux-gnu (RedHat 3/4)


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37330

[Bug bootstrap/37330] mpfr & 32/64 multilib issue

[olivier dot raoult at st dot com]

--- Comment #2 from olivier dot raoult at st dot com  2008-09-02 14:12 
---
Hmm.. maybe! I tried to script a gcc builder program which shall work on i686,
and on x86_64. Then, for the second, it shall support native 64 and -m32 modes.

As libmpfr and libmgp appear as dynamic libraries, I assumed they will be used
... but 'ldd g++' doesn't confirm. So, the only thing I have to do is to use
-with-..-lib=$PREFIX/lib64 on x86_64 machines and -with-..-lib=$PREFIX/lib on
i686?!? Good!

If it works, it's a non-bug :( .. Sorry and thanks!


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37330

[Bug bootstrap/37330] mpfr & 32/64 multilib issue

[olivier dot raoult at st dot com]

--- Comment #4 from olivier dot raoult at st dot com  2008-09-03 14:04 
---
Verstehen! Thanks!


-- 

olivier dot raoult at st dot com changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37330