The output below occurred testing Jeff's no-embedded-libltdl tarball, but I am assuming in quite likely the same is true on the trunk.
The "issue" is that I am told by configure that "C and C++ compilers are not link compatible". However, it appears I just don't have a C++ compiler at all!! I am not sure (and too lazy/busy to re-read README) if Open MPI currently requires a C++ compiler, but that certainly appears to be the case. If that is *not* the intent, then this issue is bigger than a misleading error message. I have configured this Linux/x86-64 system with only --prefix=... and --enable-debug. -Paul *** C++ compiler and preprocessor checking for g++... no checking for c++... no checking for gpp... no checking for aCC... no checking for CC... no checking for cxx... no checking for cc++... no checking for cl.exe... no checking for FCC... no checking for KCC... no checking for RCC... no checking for xlC_r... no checking for xlC... no checking whether we are using the GNU C++ compiler... no checking whether g++ accepts -g... no checking dependency style of g++... none checking how to run the C++ preprocessor... /lib/cpp checking for the C++ compiler vendor... unknown configure: WARNING: -g has been added to CXXFLAGS (--enable-debug) checking if C and C++ are link compatible... no ********************************************************************** * It appears that your C++ compiler is unable to link against object * files created by your C compiler. This generally indicates either * a conflict between the options specified in CFLAGS and CXXFLAGS * or a problem with the local compiler installation. More * information (including exactly what command was given to the * compilers and what error resulted when the commands were executed) is * available in the config.log file in this directory. ********************************************************************** configure: error: C and C++ compilers are not link compatible. Can not continue. -- Paul H. Hargrove phhargr...@lbl.gov Computer Languages & Systems Software (CLaSS) Group Computer Science Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900