Hello, I'm trying to build mpich-3.2.1 with the PGI 18.4 Community Edition compilers. However, I get an error when running configure. The configure line is, ./configure --prefix=/home/laytonjb/bin/pgi-18.4-mpich-3.2.1 The error I get is, [laytonjb@laytonjb-Lenovo-G50-45 mpich-3.2.1]$ ./conf.jeff Configuring MPICH version 3.2.1 with '--prefix=/home/laytonjb/bin/pgi-18.4-mpich-3.2.1' 'CC=/opt/pgi/linux86-64/18.4/bin/pgcc' 'CPP=/opt/pgi/linux86-64/18.4/bin/pgcc' 'CXX=/opt/pgi/linux86-64/18.4/bin/pgg++' 'FC=/opt/pgi/linux86-64/18.4/bin/pgfortran' 'F77=/opt/pgi/linux86-64/18.4/bin/pgf77' Running on system: Linux laytonjb-Lenovo-G50-45 3.10.0-693.17.1.el7.x86_64 #1 SMP Thu Jan 25 20:13:58 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... no checking whether /opt/pgi/linux86-64/18.4/bin/pgcc accepts -g... yes checking for /opt/pgi/linux86-64/18.4/bin/pgcc option to accept ISO C89... none needed checking whether /opt/pgi/linux86-64/18.4/bin/pgcc understands -c and -o together... yes checking how to run the C preprocessor... /opt/pgi/linux86-64/18.4/bin/pgcc configure: error: in `/home/laytonjb/src/mpich-3.2.1': configure: error: C preprocessor "/opt/pgi/linux86-64/18.4/bin/pgcc" fails sanity check See `config.log' for more details I've briefly looked through the config.log and this is all that stands out: $ grep -i error config.log pgcc-Error-Unknown switch: -qversion PGC/x86-64 Linux 18.4-0: compilation completed with severe errors PGC-S-0035-Syntax error: Recovery attempted by replacing identifier error by ';' (conftest.c: 14) PGC/x86-64 Linux 18.4-0: compilation completed with severe errors | Syntax error PGC-S-0035-Syntax error: Recovery attempted by replacing identifier error by ';' (conftest.c: 14) PGC/x86-64 Linux 18.4-0: compilation completed with severe errors | Syntax error configure:5951: error: in `/home/laytonjb/src/mpich-3.2.1': configure:5953: error: C preprocessor "/opt/pgi/linux86-64/18.4/bin/pgcc" fails sanity check HAVE_ERROR_CHECKING='' MPI_MAX_ERROR_STRING='' I'm not sure how to fix this error. I've attached the config.log file in case this helps. Thanks for any and all help. Jeff _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss