I built from trunk a couple days ago and notice that mpicxx has an erroneous path:
$ ~/usr/ompi/bin/mpicxx -show no -I/homes/jedbrown/usr/ompi/include -pthread -Wl,-rpath -Wl,/homes/jedbrown/usr/ompi/lib -Wl,--enable-new-dtags -L/homes/jedbrown/usr/ompi/lib -lmpi The C compiler is fine $ ~/usr/ompi/bin/mpicc -show /soft/apps/packages/gcc-4.8.0/bin/gcc -I/homes/jedbrown/usr/ompi/include -pthread -Wl,-rpath -Wl,/homes/jedbrown/usr/ompi/lib -Wl,--enable-new-dtags -L/homes/jedbrown/usr/ompi/lib -lmpi I configured with $ ../configure --prefix=/homes/jedbrown/usr/ompi CC=/soft/apps/packages/gcc-4.8.0/bin/gcc CXX=/soft/apps/packages/gcc-4.8.0/bin/g++ FC=/soft/apps/packages/gcc-4.8.0/bin/gfortran These compilers all exist and the build/install went cleanly. So where does this come from? C++ compiler absolute: none $ ~/usr/ompi/bin/ompi_info [140/9616] Package: Open MPI jedbrown@cg Distribution Open MPI: 1.9a1 Open MPI repo revision: r28134M Open MPI release date: Feb 28, 2013 Open RTE: 1.9a1 Open RTE repo revision: r28134M Open RTE release date: Feb 28, 2013 OPAL: 1.9a1 OPAL repo revision: r28134M OPAL release date: Feb 28, 2013 MPI API: 2.1 Ident string: 1.9a1 Prefix: /homes/jedbrown/usr/ompi Configured architecture: x86_64-unknown-linux-gnu Configure host: cg Configured by: jedbrown Configured on: Thu May 23 21:07:25 CDT 2013 Configure host: cg Built by: jedbrown Built on: Thu May 23 21:19:23 CDT 2013 Built host: cg C bindings: yes C++ bindings: no Fort mpif.h: yes (all) Fort use mpi: yes (limited: overloading) Fort use mpi size: deprecated-ompi-info-value Fort use mpi_f08: no Fort mpi_f08 compliance: The mpi_f08 module was not built Fort mpi_f08 subarrays: no Java bindings: no Wrapper compiler rpath: runpath C compiler: /soft/apps/packages/gcc-4.8.0/bin/gcc C compiler absolute: C compiler family name: GNU C compiler version: 4.8.0 C++ compiler: /soft/apps/packages/gcc-4.8.0/bin/g++ C++ compiler absolute: none Fort compiler: /soft/apps/packages/gcc-4.8.0/bin/gfortran Fort compiler abs: Fort ignore TKR: no Fort 08 assumed shape: no Fort optional args: no Fort BIND(C): no Fort PRIVATE: no Fort ABSTRACT: no Fort ASYNCHRONOUS: no Fort PROCEDURE: no Fort f08 using wrappers: yes C profiling: yes C++ profiling: no Fort mpif.h profiling: yes Fort use mpi profiling: yes Fort use mpi_f08 prof: no C++ exceptions: no Thread support: posix (MPI_THREAD_MULTIPLE: no, OPAL support: no, OMPI progress: no, ORTE progress: no, Event lib: yes) Sparse Groups: no Internal debug support: no MPI interface warnings: yes MPI parameter check: runtime Memory profiling support: no Memory debugging support: no libltdl support: yes Heterogeneous support: no mpirun default --prefix: no MPI I/O support: yes MPI_WTIME support: gettimeofday Symbol vis. support: yes Host topology support: yes MPI extensions: FT Checkpoint support: no (checkpoint thread: no) C/R Enabled Debugging: no VampirTrace support: yes MPI_MAX_PROCESSOR_NAME: 256 MPI_MAX_ERROR_STRING: 256 MPI_MAX_OBJECT_NAME: 64 MPI_MAX_INFO_KEY: 36 MPI_MAX_INFO_VAL: 256 MPI_MAX_PORT_NAME: 1024 MPI_MAX_DATAREP_STRING: 128 MCA backtrace: execinfo (MCA v2.0, API v2.0, Component v1.9) MCA compress: bzip (MCA v2.0, API v2.0, Component v1.9) MCA compress: gzip (MCA v2.0, API v2.0, Component v1.9) MCA crs: none (MCA v2.0, API v2.0, Component v1.9) MCA db: hash (MCA v2.0, API v1.0, Component v1.9) MCA db: print (MCA v2.0, API v1.0, Component v1.9) MCA event: libevent2019 (MCA v2.0, API v2.0, Component v1.9) MCA hwloc: hwloc152 (MCA v2.0, API v2.0, Component v1.9) MCA if: linux_ipv6 (MCA v2.0, API v2.0, Component v1.9) MCA if: posix_ipv4 (MCA v2.0, API v2.0, Component v1.9) MCA installdirs: env (MCA v2.0, API v2.0, Component v1.9) MCA installdirs: config (MCA v2.0, API v2.0, Component v1.9) MCA memory: linux (MCA v2.0, API v2.0, Component v1.9) MCA pstat: linux (MCA v2.0, API v2.0, Component v1.9) MCA shmem: mmap (MCA v2.0, API v2.0, Component v1.9) MCA shmem: posix (MCA v2.0, API v2.0, Component v1.9) MCA shmem: sysv (MCA v2.0, API v2.0, Component v1.9) MCA timer: linux (MCA v2.0, API v2.0, Component v1.9) MCA dfs: app (MCA v2.0, API v1.0, Component v1.9) MCA dfs: orted (MCA v2.0, API v1.0, Component v1.9) MCA dfs: test (MCA v2.0, API v1.0, Component v1.9) MCA errmgr: default_app (MCA v2.0, API v3.0, Component v1.9) MCA errmgr: default_hnp (MCA v2.0, API v3.0, Component v1.9) MCA errmgr: default_orted (MCA v2.0, API v3.0, Component v1.9) MCA ess: env (MCA v2.0, API v3.0, Component v1.9) MCA ess: hnp (MCA v2.0, API v3.0, Component v1.9) MCA ess: singleton (MCA v2.0, API v3.0, Component v1.9) MCA ess: slurm (MCA v2.0, API v3.0, Component v1.9) MCA ess: tool (MCA v2.0, API v3.0, Component v1.9) MCA filem: raw (MCA v2.0, API v2.0, Component v1.9) MCA grpcomm: bad (MCA v2.0, API v2.0, Component v1.9) MCA iof: hnp (MCA v2.0, API v2.0, Component v1.9) MCA iof: mr_hnp (MCA v2.0, API v2.0, Component v1.9) MCA iof: mr_orted (MCA v2.0, API v2.0, Component v1.9) MCA iof: orted (MCA v2.0, API v2.0, Component v1.9) MCA iof: tool (MCA v2.0, API v2.0, Component v1.9) MCA odls: default (MCA v2.0, API v2.0, Component v1.9) MCA oob: tcp (MCA v2.0, API v2.0, Component v1.9) MCA plm: rsh (MCA v2.0, API v2.0, Component v1.9) MCA plm: slurm (MCA v2.0, API v2.0, Component v1.9) MCA ras: loadleveler (MCA v2.0, API v2.0, Component v1.9) MCA ras: simulator (MCA v2.0, API v2.0, Component v1.9) MCA ras: slurm (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: lama (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: mindist (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: ppr (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: rank_file (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: resilient (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: round_robin (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: seq (MCA v2.0, API v2.0, Component v1.9) MCA rmaps: staged (MCA v2.0, API v2.0, Component v1.9) MCA rml: oob (MCA v2.0, API v2.0, Component v1.9) MCA routed: binomial (MCA v2.0, API v2.0, Component v1.9) MCA routed: debruijn (MCA v2.0, API v2.0, Component v1.9) MCA routed: direct (MCA v2.0, API v2.0, Component v1.9) MCA routed: radix (MCA v2.0, API v2.0, Component v1.9) MCA state: app (MCA v2.0, API v1.0, Component v1.9) MCA state: hnp (MCA v2.0, API v1.0, Component v1.9) MCA state: novm (MCA v2.0, API v1.0, Component v1.9) MCA state: orted (MCA v2.0, API v1.0, Component v1.9) MCA state: staged_hnp (MCA v2.0, API v1.0, Component v1.9) MCA state: staged_orted (MCA v2.0, API v1.0, Component v1.9) MCA allocator: basic (MCA v2.0, API v2.0, Component v1.9) MCA allocator: bucket (MCA v2.0, API v2.0, Component v1.9) MCA bcol: basesmuma (MCA v2.0, API v2.0, Component v1.9) MCA bcol: ptpcoll (MCA v2.0, API v2.0, Component v1.9) MCA bml: r2 (MCA v2.0, API v2.0, Component v1.9) MCA btl: openib (MCA v2.0, API v2.0, Component v1.9) MCA btl: self (MCA v2.0, API v2.0, Component v1.9) MCA btl: sm (MCA v2.0, API v2.0, Component v1.9) MCA btl: tcp (MCA v2.0, API v2.0, Component v1.9) MCA coll: basic (MCA v2.0, API v2.0, Component v1.9) MCA coll: hierarch (MCA v2.0, API v2.0, Component v1.9) MCA coll: inter (MCA v2.0, API v2.0, Component v1.9) MCA coll: libnbc (MCA v2.0, API v2.0, Component v1.9) MCA coll: ml (MCA v2.0, API v2.0, Component v1.9) MCA coll: self (MCA v2.0, API v2.0, Component v1.9) MCA coll: sm (MCA v2.0, API v2.0, Component v1.9) MCA coll: tuned (MCA v2.0, API v2.0, Component v1.9) MCA dpm: orte (MCA v2.0, API v2.0, Component v1.9) MCA fbtl: posix (MCA v2.0, API v2.0, Component v1.9) MCA fcoll: dynamic (MCA v2.0, API v2.0, Component v1.9) MCA fcoll: individual (MCA v2.0, API v2.0, Component v1.9) MCA fcoll: static (MCA v2.0, API v2.0, Component v1.9) MCA fcoll: two_phase (MCA v2.0, API v2.0, Component v1.9) MCA fcoll: ylib (MCA v2.0, API v2.0, Component v1.9) MCA fs: ufs (MCA v2.0, API v2.0, Component v1.9) MCA io: ompio (MCA v2.0, API v2.0, Component v1.9) MCA io: romio (MCA v2.0, API v2.0, Component v1.9) MCA mpool: grdma (MCA v2.0, API v2.0, Component v1.9) MCA mpool: sm (MCA v2.0, API v2.0, Component v1.9) MCA osc: pt2pt (MCA v2.0, API v2.0, Component v1.9) MCA osc: rdma (MCA v2.0, API v2.0, Component v1.9) MCA pml: v (MCA v2.0, API v2.0, Component v1.9) MCA pml: bfo (MCA v2.0, API v2.0, Component v1.9) MCA pml: cm (MCA v2.0, API v2.0, Component v1.9) MCA pml: dr (MCA v2.0, API v2.0, Component v1.9) MCA pml: ob1 (MCA v2.0, API v2.0, Component v1.9) MCA pubsub: orte (MCA v2.0, API v2.0, Component v1.9) MCA rcache: vma (MCA v2.0, API v2.0, Component v1.9) MCA rte: orte (MCA v2.0, API v2.0, Component v1.9) MCA sbgp: basesmsocket (MCA v2.0, API v2.0, Component v1.9) MCA sbgp: basesmuma (MCA v2.0, API v2.0, Component v1.9) MCA sbgp: p2p (MCA v2.0, API v2.0, Component v1.9) MCA sharedfp: dummy (MCA v2.0, API v2.0, Component v1.9) MCA topo: unity (MCA v2.0, API v2.0, Component v1.9) MCA vprotocol: pessimist (MCA v2.0, API v2.0, Component v1.9)