mpir-2.7.0-alpha12 fails to configure on SLES11SP1 power7 (ppc64) with gcc 5.1

[fbissey]

Just as it says in the title. mpir configuration fails, this was done with sage 6.7.beta3's tarball. It is not a C++11 problem, it seems to be C11 problem, possibly ppc64 specific.

/hpc/scratch/frb15/sandbox/sage-6.7.beta3/build/pipestatus "sage-spkg -f mpir-2.7.0-alpha12 2>&1" "tee -a /hpc/scratch/frb15/sandbox/sage-6.7.beta3/logs/pkgs/mpir-2.7.0-alpha12.log"
Found local metadata for mpir-2.7.0-alpha12
Found local sources at /hpc/scratch/frb15/sandbox/sage-6.7.beta3/upstream/mpir-2.7.0-alpha12.tar.bz2
Checksum: 6a46071d007a5284dbb67c4db70306deeb3e6513 vs 6a46071d007a5284dbb67c4db70306deeb3e6513
mpir-2.7.0-alpha12
====================================================
Setting up build directory for mpir-2.7.0-alpha12
mv: cannot stat `mpir-2.7.0-alpha12*': No such file or directory
Finished set up
****************************************************
Host system:
Linux p2n14-c 2.6.32.54-0.3-ppc64 #1 SMP 2012-01-27 17:38:56 +0100 ppc64 ppc64 ppc64 GNU/Linux
****************************************************
C compiler: gcc
C compiler version:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/hpc/home/projects/packages/local.linux.ppc/pkg/gcc/5.1.0/bin/../libexec/gcc/powerpc64-linux/5.1.0/lto-wrapper
Target: powerpc64-linux
Configured with: ../configure --build=powerpc64-linux --host=powerpc64-linux --target=powerpc64-linux --with-cpu=default64 --prefix=/usr/local/pkg/gcc/5.1.0 --with-long-double-128 --enable-secureplt --enable-threads=posix --enable-languages=c,c++,fortran --enable-__cxa_atexit --enable-shared --enable-checking=release --enable-lto --enable-gnu-indirect-function --without-libelf --with-cpu=power7 --with-tune=power7 --with-build-time-tools=/opt/at7.0/powerpc64-linux/bin
Thread model: posix
gcc version 5.1.0 (GCC) 
****************************************************
Applying patches to upstream sources...
patching file gmp-h.in
patching file mpirxx.h
patching file mpn/x86/fat/fat.c
Building a 64-bit version of MPIR.
Building MPIR with the C++ interface and (also) static libraries.
------------------------------------------------------------------------
Configuring MPIR with empty CFLAGS to determine the defaults:
checking build system type... power7-unknown-linux-gnu
checking host system type... power7-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking ABI=mode64
checking compiler gcc -m64  ... no, long long reliability test 1
checking compiler gcc  ... no, long long reliability test 1
configure: error: could not find a working compiler, see config.log for details
Error configuring MPIR (with CFLAGS unset).
Consult /hpc/scratch/frb15/sandbox/sage-6.7.beta3/local/var/tmp/sage/build/mpir-2.7.0-alpha12/src/config.log for for details.

Inspecting config.log the code not compiling is

/* The following provokes a segfault in the compiler on powerpc-apple-darwin.
   Extracted from tests/mpn/t-iord_u.c.  Causes Apple's gcc 3.3 build 1640 and
   1666 to segfault with, e.g., -O2 -mpowerpc64.  */

#if defined(__GNUC__) && !defined(__clang__)
typedef unsigned long long t1;typedef t1*t2;
__inline__ t1 e(t2 rp,t2 up,int n,t1 v0)
{t1 c,x,r;int i;if(v0){c=1;for(i=1;i<n;i++){x=up[i];r=x+1;rp[i]=r;}}return c;}
f(){static const struct{t1 n;t1 src[9];t1 want[9];}d[]={{1,{0},{1}},};t1 got[9];int i;
for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
h(){}g(){}
#else
int dummy;
#endif

int main () { return 0; }

which give rise to the following warnings and errors

gcc conftest.c
conftest.c:9:1: warning: return type defaults to 'int' [-Wimplicit-int]
 f(){static const struct{t1 n;t1 src[9];t1 want[9];}d[]={{1,{0},{1}},};t1 got[9];int i;
 ^
conftest.c: In function 'f':
conftest.c:10:44: warning: implicit declaration of function 'h' [-Wimplicit-function-declaration]
 for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
                                            ^
conftest.c:10:48: warning: implicit declaration of function 'g' [-Wimplicit-function-declaration]
 for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
                                                ^
conftest.c: At top level:
conftest.c:11:1: warning: return type defaults to 'int' [-Wimplicit-int]
 h(){}g(){}
 ^
conftest.c:11:6: warning: return type defaults to 'int' [-Wimplicit-int]
 h(){}g(){}
      ^
/tmp/cc80AtKw.o: In function `f':
conftest.c:(.text+0x50): undefined reference to `e'
collect2: error: ld returned 1 exit status

I had to use -std=gnu90 to compile that code -std=gnu99 and the default both gave the above errors.

[fbissey]

Jean-Pierre could you check if you get that on the gcc compile farm? If you stull have access to it and the appropriate hardware that is.

[leif]

A duplicate of #18247 (still needs review); btw. already reported on sage-devel and mpir-devel.

[fbissey]

Missed it. Sorry about the noise.