Hello, The _AC_FC_LIBRARY_LDFLAGS macro in lib/autoconf/fortran.m4 is incompatible with modern Cray compiler drivers. Unlike most other compilers, the Cray C/C++ compiler drivers require no additional flags to properly link with Cray Fortran object files. Also unlike most other compilers, the Cray compiler drivers default to creating a statically linked executable, with a few runtime libraries linked whole-archive. When autoconf explicitly passes these link options to the driver, the compilation fails due to duplicate symbols from the runtime library being included multiple times. The attached patch filters out the library that is causing problems with CCE 8.0.x-8.2.x. A better solution would be to automatically filter out libraries that the C/C++ compiler drivers add, as this particular library (part of the gperftools project at http://code.google.com/p/gperftools/) is not specific to Cray.
Steven Vormwald
fortran.m4.patch
Description: fortran.m4.patch
