Hi, thank you very much for all answers to my problems building MPICH on Solaris with gcc-4.9.0. Today I tried to build mpich-master-v3.2a1. Unfortunately I have had the same problems.

1) For the linking errors you should provide the full build log but it could just be an issue with the order of arguments passed to Solaris ld, or if you compiled gcc to use GNU ld, the same issue might occur if the configure script assumes Solaris => Solaris ld.

I have attached the files in the archive mpich-3.2-SunOS.sparc.64_gcc_only-m64.tar.gz

2) I keep this sticky note on my wiki:

"Compiler or options invalid for pre-UNIX 03 X/Open applications and pre-2001 POSIX applications"

/usr/gcc/4.6/lib/gcc/i386-pc-solaris2.11/4.6.3/include-fixed/sys/feature_tests.h:362:2: error: #error "Compiler or options invalid for pre-UNIX 03 X/Open applications and pre-2001 POSIX applications"

Conflict of standards between _XOPEN_SOURCE and C99 extensions.

#if defined(_STDC_C99) && (defined(__XOPEN_OR_POSIX) && !defined(_XPG6))

As GCC standards do not match ANSI/ISO/POSIX standards strictly you need to specify the standard you want to comply with. Usually adding -D_XOPEN_SOURCE=500 (or 600) and/or -D__EXTENSIONS__ to your compiler flags is a good start.

It was a little bit more complicated to get this one as far as the build with just "CFLAGS=-m64". Adding "-D__EXTENSIONS__" broke the build process. Adding "-D_XOPEN_SOURCE=500" didn't solve the problem, because Solaris expects "-D_XOPEN_SOURCE=600". Using this flag wasn't helpful, because you redefined it to "500" in file mpich-master-v3.2a1/src/mpi/romio/adio/common/ad_read.c, so that I had to add "-D_STDC_C99" to keep "600". Another problem came from file /usr/include/sys/statvfs.h ("FSTYPSZ" wasn't defined). Looking into the file showed the following. ... #define _FSTYPSZ 16 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) #ifndef FSTYPSZ #define FSTYPSZ _FSTYPSZ #endif ... Finally I could build MPICH with "CFLAGS=-m64 -std=c99 -D_STDC_C99 -D_POSIX_C_SOURCE=200112L -D_XOPEN_SOURCE=600 -DFSTYPSZ=_FSTYPSZ" to the same point as with "CFLAGS=-m64". In both cases libmpicxx.so wasn't available. I have attached the files for this build process in the archive mpich-3.2-SunOS.sparc.64_gcc.tar.gz. Please let me know if you need anything else. Kind regards Siegmar