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FindMPI: Factor out compiler wrapper execution into helper

This commit is contained in:
Alin Marin Elena 2014-12-04 13:51:00 -05:00 committed by Brad King
parent 470c549c62
commit f5ede30006
1 changed files with 13 additions and 21 deletions
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34
Modules/FindMPI.cmake
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@ -188,6 +188,15 @@ foreach(SystemPrefixDir ${CMAKE_SYSTEM_PREFIX_PATH})
endforeach()
endforeach()
function (_mpi_check_compiler compiler options cmdvar resvar)
execute_process(
COMMAND "${compiler}" ${options}
OUTPUT_VARIABLE cmdline OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE cmdline ERROR_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE success)
set(${cmdvar} "${cmdline}" PARENT_SCOPE)
set(${resvar} "${success}" PARENT_SCOPE)
endfunction()
#
# interrogate_mpi_compiler(lang try_libs)
@ -220,12 +229,7 @@ function (interrogate_mpi_compiler lang try_libs)
if (MPI_${lang}_COMPILER)
# Check whether the -showme:compile option works. This indicates that we have either OpenMPI
# or a newer version of LAM-MPI, and implies that -showme:link will also work.
execute_process(
COMMAND ${MPI_${lang}_COMPILER} -showme:compile
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE MPI_COMPILER_RETURN)
_mpi_check_compiler("${MPI_${lang}_COMPILER}" "-showme:compile" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
if (MPI_COMPILER_RETURN EQUAL 0)
# If we appear to have -showme:compile, then we should
# also have -showme:link. Try it.
@ -257,20 +261,12 @@ function (interrogate_mpi_compiler lang try_libs)
# Older versions of LAM-MPI have "-showme". Try to find that.
if (NOT MPI_COMPILER_RETURN EQUAL 0)
execute_process(
COMMAND ${MPI_${lang}_COMPILER} -showme
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE MPI_COMPILER_RETURN)
_mpi_check_compiler("${MPI_${lang}_COMPILER}" "-showme" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
endif()
# MVAPICH uses -compile-info and -link-info. Try them.
if (NOT MPI_COMPILER_RETURN EQUAL 0)
execute_process(
COMMAND ${MPI_${lang}_COMPILER} -compile-info
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE MPI_COMPILER_RETURN)
_mpi_check_compiler("${MPI_${lang}_COMPILER}" "-compile-info" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
# If we have compile-info, also have link-info.
if (MPI_COMPILER_RETURN EQUAL 0)
@ -290,11 +286,7 @@ function (interrogate_mpi_compiler lang try_libs)
# MPICH just uses "-show". Try it.
if (NOT MPI_COMPILER_RETURN EQUAL 0)
execute_process(
COMMAND ${MPI_${lang}_COMPILER} -show
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE MPI_COMPILER_RETURN)
_mpi_check_compiler("${MPI_${lang}_COMPILER}" "-show" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
endif()
if (MPI_COMPILER_RETURN EQUAL 0)