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Add Test to verify MPI discovery #33

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Add Test to verify MPI discovery #33

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69a7b2e
Add Test to verify MPI discovery
fsimonis Dec 13, 2018
6e0581c
Add diagnostic checks on failure
fsimonis Dec 14, 2018
906044f
Adjust Verbosity
fsimonis Dec 14, 2018
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100 changes: 99 additions & 1 deletion FindPETSc.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,101 @@ else()
endforeach()
endif()

set(PETSC_BINARY_DIR "${CMAKE_BINARY_DIR}/CMakeFiles/FindPETSc")

# Verify that the compiler is able to find mpi.h
function (petsc_check_mpi)
set(PETSC_MPI_TESTFILE "${PETSC_BINARY_DIR}/petsc-mpi.c")
if(PETSC_LANGUAGE_BINDINGS STREQUAL "CXX")
set(PETSC_MPI_TESTFILE "${PETSC_MPI_TESTFILE}pp")
endif()

file (WRITE "${PETSC_MPI_TESTFILE}" "
#include<mpi.h>
int main (int argc, char** argv[]) {
MPI_Init(NULL, NULL);
MPI_Finalize();
return 0;
}
")

message(STATUS "Performing Test petsc-mpi")
try_compile(
PETSC_MPI_COMPILES
"${PETSC_BINARY_DIR}"
"${PETSC_MPI_TESTFILE}"
OUTPUT_VARIABLE PETSC_MPI_TESTOUT
)
file(WRITE "${PETSC_BINARY_DIR}/petsc-mpi.log" "${PETSC_MPI_TESTOUT}")
if(NOT PETSC_MPI_COMPILES)
message(STATUS "Performing Test petsc-mpi - Failure")
else()
message(STATUS "Performing Test petsc-mpi - Success")
endif()
set(PETSC_MPI_WORKS "${PETSC_MPI_COMPILES}" PARENT_SCOPE)
endfunction(petsc_check_mpi)

# Verify that the compiler is able to find mpi.h
function (petsc_check_header includes)
set(PETSC_HEADER_TESTFILE "${PETSC_BINARY_DIR}/petsc-header.c")
if(PETSC_LANGUAGE_BINDINGS STREQUAL "CXX")
set(PETSC_HEADER_TESTFILE "${PETSC_HEADER_TESTFILE}pp")
endif()

file (WRITE "${PETSC_HEADER_TESTFILE}" "
#include<petscsys.h>
int main (int argc, char* argv[]) {
return 0;
}
")

message(STATUS "Performing Test petsc-header")
try_compile(
PETSC_HEADER_COMPILES
"${PETSC_BINARY_DIR}"
"${PETSC_HEADER_TESTFILE}"
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:LIST=${includes}"
OUTPUT_VARIABLE PETSC_HEADER_TESTOUT
)
file(WRITE "${PETSC_BINARY_DIR}/petsc-header.log" "${PETSC_HEADER_TESTOUT}")
if(NOT PETSC_HEADER_COMPILES)
message(STATUS "Performing Test petsc-header - Failure")
else()
message(STATUS "Performing Test petsc-header - Success")
endif()
set(PETSC_HEADER_WORKS "${PETSC_HEADER_COMPILES}" PARENT_SCOPE)
endfunction(petsc_check_header)


function (petsc_run_diagnostics includes libraries)
message (STATUS "Running more tests to create basic diagnostics:")
petsc_check_header("${includes}")
petsc_check_mpi()
if (PETSc_FIND_REQUIRED)
if (PETSC_HEADER_WORKS)
if (PETSC_MPI_WORKS)
message (STATUS "PETSc include was found and MPI works too. The PETSc libraries could be the problem. Please check the general log.")
else (PETSC_MPI_WORKS)
message (STATUS "MPI test failed. If PETSc was built with MPI please check if the compiler is set to the compiler wrapper provided by your MPI implementation.")
endif (PETSC_MPI_WORKS)
else (PETSC_HEADER_WORKS)
if (PETSC_MPI_WORKS)
message (STATUS "PETSc includes may be incorrect. Please check the log of the header check.")
else (PETSC_MPI_WORKS)
message (STATUS "PETSc includes are incorrect and MPI failed. If PETSc was built with MPI please check if the compiler is set to the compiler wrapper provided by your MPI implementation.")
endif (PETSC_MPI_WORKS)
endif (PETSC_HEADER_WORKS)
message(STATUS " Settings used for the final test:\n"
" Includes: ${includes}\n"
" Libraries:${libraries}\n")
message(STATUS " Related log files:\n"
"General: ${CMAKE_BINARY_DIR}/CMakeError.log\n"
"Header Check: ${PETSC_BINARY_DIR}/petsc-header.log\n"
"MPI Check: ${PETSC_BINARY_DIR}/petsc-mpi.log\n")
endif (PETSc_FIND_REQUIRED)
endfunction (petsc_run_diagnostics)


function (petsc_get_version)
if (EXISTS "${PETSC_DIR}/include/petscversion.h")
file (STRINGS "${PETSC_DIR}/include/petscversion.h" vstrings REGEX "#define PETSC_VERSION_(RELEASE|MAJOR|MINOR|SUBMINOR|PATCH) ")
Expand Down Expand Up @@ -316,7 +411,10 @@ int main(int argc,char *argv[]) {
if (petsc_works_all) # We fail anyways
message (STATUS "PETSc requires extra include paths and explicit linking to all dependencies. This probably means you have static libraries and something unexpected in PETSc headers.")
else (petsc_works_all) # We fail anyways
message (STATUS "PETSc could not be used, maybe the install is broken.")
message (STATUS "PETSc does not work. Maybe the install is broken.")
if (NOT PETSc_FIND_QUIETLY)
petsc_run_diagnostics("${petsc_includes_all}" "${PETSC_LIBRARIES_ALL}")
endif (NOT PETSc_FIND_QUIETLY)
endif (petsc_works_all)
endif (petsc_works_alllibraries)
endif (petsc_works_allincludes)
Expand Down