id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,work_issues,upstream,reviewer,author,merged,dependencies,stopgaps
12765,MPIR doesn't compile with GCC-4.7.0 on ia64,jdemeyer,tbd,"On Skynet iras (SUSE ES10 ia64):
{{{
Host system:
Linux iras 2.6.16.46-0.12-default #1 SMP Thu May 17 14:00:09 UTC 2007 ia64 ia64 ia64 GNU/Linux
****************************************************
C compiler: gcc
C compiler version:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.7.0/ia64-Linux-suse/libexec/gcc/ia64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: ia64-unknown-linux-gnu
Configured with: /usr/local/gcc-4.7.0/src/gcc-4.7.0/configure --enable-languages=c,c++,fortran --with-gnu-as --with-as=/usr/local/binutils
-2.22/ia64-Linux-suse-gcc-4.6.2/bin/as --with-gnu-ld --with-ld=/usr/local/binutils-2.22/ia64-Linux-suse-gcc-4.6.2/bin/ld --with-gmp=/usr/l
ocal/mpir-2.5.1/ia64-Linux-suse-gcc-4.6.2 --with-mpfr=/usr/local/mpfr-3.1.0/ia64-Linux-suse-mpir-2.5.1-gcc-4.6.2 --with-mpc=/usr/local/mpc
-0.9/ia64-Linux-suse-mpir-2.5.1-mpfr-3.1.0-gcc-4.6.2 --prefix=/usr/local/gcc-4.7.0/ia64-Linux-suse
Thread model: posix
gcc version 4.7.0 (GCC)
****************************************************
Your compiler does not support '-m32' nor '-m64'.  Leaving ABI unset.
Checking what CFLAGS MPIR would use if they were empty...
Settings chosen by MPIR when configuring with CFLAGS unset:
  CC:      gcc
  CFLAGS:  -O2
Settings required to properly build MPIR, taking into account SAGE_DEBUG etc.:
  CFLAGS:
  LDFLAGS:  -Wl,-z,noexecstack
  ABI:
Settings from the ""global"" environment:
  CC:      gcc
  CFLAGS:
  (CPPFLAGS, CXX and CXXFLAGS are listed below; these don't get modified.)
Using MPIR's settings (plus mandatory ones).
Finally using the following settings:
  CC=gcc
  CFLAGS=-O2
  CPPFLAGS=
  CXX=g++
  CXXFLAGS=
  LDFLAGS= -Wl,-z,noexecstack
  ABI=
(These settings may still get overridden by 'configure' or Makefiles.)
Configuring MPIR with the following options:
    --prefix=""/home/jdemeyer/iras/sage-5.0.beta8-gcc/local"" --enable-shared --enable-static --enable-gmpcompat --enable-cxx=yes --libdir=/
home/jdemeyer/iras/sage-5.0.beta8-gcc/local/lib
[...]
/bin/sh ../libtool --tag=CC   --mode=compile gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_`echo divrem_eucl
idean_r_1 | sed 's/_$//'`    -O2   -c -o divrem_euclidean_r_1.lo divrem_euclidean_r_1.c
 gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -D__GMP_WITHIN_GMP -I.. -DOPERATION_divrem_euclidean_r_1 -O2 -c divrem_euclidean_r_1.c  -fPIC -DP
IC -o .libs/divrem_euclidean_r_1.o
divrem_euclidean_r_1.c: In function '__gmpn_mod_1_k':
divrem_euclidean_r_1.c:157:5: error: 'asm' operand requires impossible reload
make[2]: *** [divrem_euclidean_r_1.lo] Error 1
make[2]: Leaving directory `/home/jdemeyer/iras/sage-5.0.beta8-gcc/spkg/build/mpir-2.1.3.p9/src/mpn'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jdemeyer/iras/sage-5.0.beta8-gcc/spkg/build/mpir-2.1.3.p9/src'
make: *** [all] Error 2
Error building MPIR.
}}}

This is likely a GCC bug, see [http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48496]

There is a work-around (by essentially disabling all optimization) spkg at #11616.

See #12751 for the GCC-4.7.0 metaticket.",defect,closed,major,sage-duplicate/invalid/wontfix,packages: standard,duplicate,,,,Reported upstream. Developers acknowledge bug.,Jeroen Demeyer,,,,