#13290: Upgrade MPC to version 1.0
----------------------------------+-----------------------------------------
       Reporter:  jdemeyer        |         Owner:  tbd           
           Type:  enhancement     |        Status:  needs_review  
       Priority:  minor           |     Milestone:  sage-5.3      
      Component:  packages        |    Resolution:                
       Keywords:                  |   Work issues:                
Report Upstream:  N/A             |     Reviewers:  Leif Leonhardy
        Authors:  Jeroen Demeyer  |     Merged in:                
   Dependencies:                  |      Stopgaps:                
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Comment (by leif):

 Interestingly, similar happens if I unset `CC`, `CPP`, `CFLAGS` and
 `CPPFLAGS`:  While `configure` definitely uses the `CFLAGS` from `gmp.h`,
 it doesn't use the `CC` setting.

 Apparently because of inappropriate caching:
 {{{
 ...
 checking for CC and CFLAGS in gmp.h... yes CC=gcc-4.7.0 -std=gnu99
 CFLAGS=-O2 -m64 -march=btver1 -mtune=btver1  -g -march=native -O3 -fno-
 strict-aliasing -DHONORS_CFLAGS
 checking for CC=gcc-4.7.0 -std=gnu99 and CFLAGS=-O2 -m64 -march=btver1
 -mtune=btver1  -g -march=native -O3 -fno-strict-aliasing
 -DHONORS_CFLAGS... yes
 checking for gcc... (cached) gcc
 ...
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13290#comment:19>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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