Merge pull request #1 from jorgekva/linsolver_petsc
Improvements to FindPetsc.cmake module
This commit is contained in:
Liu Ming
commit
ad7b064556
@ -20,36 +20,46 @@ if (CMAKE_SIZEOF_VOID_P)
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math (EXPR _BITS "8 * ${CMAKE_SIZEOF_VOID_P}")
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endif (CMAKE_SIZEOF_VOID_P)
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# if PETSC_ROOT is set, then this is the only place searched for petsc headers
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# and includes
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set(_no_default_path "")
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if(PETSC_ROOT)
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set (_no_default_path "NO_DEFAULT_PATH")
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endif()
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# look for a system-wide BLAS library
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find_package(BLAS QUIET)
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set(PETSC_BLAS_LIBRARY "")
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if (BLAS_FOUND)
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find_package(BLAS QUIET)
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list(APPEND PETSC_BLAS_LIBRARY "${BLAS_LIBRARIES}")
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elseif(PETSC_ROOT)
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find_library(PETST_BLAS_LIBRARY
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# if BLAS wasn't found, look for it in PETSC_ROOT. Won't search if
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# PETSC_BLAS_LIBRARY is set.
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find_library(PETSC_BLAS_LIBRARY
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NAME "blas"
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PATH ${PETSC_ROOT}
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PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH)
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endif()
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${_no_default_path}
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)
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# print message if there was still no blas found!
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if(NOT BLAS_FOUND AND NOT PETSC_BLAS_LIBRARY)
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message(STATUS "BLAS not found but required for PETSC")
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return()
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_BLAS_LIBRARY}")
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find_package(LAPACK QUIET)
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set(PETSC_LAPACK_LIBRARY "")
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if (LAPACK_FOUND)
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find_package(LAPACK QUIET)
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list(APPEND PETSC_LAPACK_LIBRARY "${LAPACK_LIBRARIES}")
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elseif(PETSC_ROOT)
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find_library(PETST_LAPACK_LIBRARY
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# if LAPACK wasn't found, look for it in PETSC_ROOT
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find_library(PETSC_LAPACK_LIBRARY
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NAME "lapack"
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PATH ${PETSC_ROOT}
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PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH)
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endif()
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${_no_default_path}
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)
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# print message if there was still no blas found!
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if(NOT LAPACK_FOUND AND NOT PETSC_LAPACK_LIBRARY)
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message(STATUS "LAPACK not found but required for PETSC")
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@ -62,47 +72,70 @@ if (X11_FOUND)
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list(APPEND PETSC_X11_LIBRARY "${X11_LIBRARIES}")
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_X11_LIBRARY}")
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# only probe if we haven't a path in our cache
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if (Petsc_ROOT)
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set (PETSC_ROOT "${Petsc_ROOT}")
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endif (Petsc_ROOT)
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if (NOT PETSC_NORMAL_INCLUDE_DIR)
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if (PETSC_ROOT)
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find_path (PETSC_NORMAL_INCLUDE_DIR
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NAMES "petsc.h"
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PATHS ${PETSC_ROOT}
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PATH_SUFFIXES "petsc-3.4.4" "include"
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NO_DEFAULT_PATH
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PATH_SUFFIXES "petsc-3.4.4" "include" "petsc"
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${_no_default_path}
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)
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endif (PETSC_ROOT)
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endif (NOT PETSC_NORMAL_INCLUDE_DIR)
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if (NOT PETSC_MPIUNI_INCLUDE_DIR)
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if (PETSC_ROOT)
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find_path (PETSC_MPIUNI_INCLUDE_DIR
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# if parallel computing is explicitly enabled - reuse the paths and links from
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# OpmMainLib + OpmFind
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# this needs to be called explicitly as FindPetsc runs before OpmMainLib starts
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# looking for MPI (for some reason). Ideally this isn't necessary
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if(USE_MPI)
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find_package(MPI)
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endif()
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set(PETSC_MPI_FOUND ${MPI_FOUND})
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set(PETSC_MPI_INCLUDE_DIRS ${MPI_INCLUDE_PATH})
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set(PETSC_MPI_LIBRARIES ${MPI_LIBRARIES})
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# fallback - use the petsc provided implementation of serial MPI.
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if (NOT PETSC_MPI_INCLUDE_DIRS)
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message(STATUS "Building without MPI support - looking for PETSc provided serial implementation")
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find_path (PETSC_MPI_INCLUDE_DIRS
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NAMES "mpi.h"
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PATHS ${PETSC_ROOT}/include
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PATH_SUFFIXES "mpiuni"
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NO_DEFAULT_PATH
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${_no_default_path}
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)
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endif (PETSC_ROOT)
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endif (NOT PETSC_MPIUNI_INCLUDE_DIR)
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if(PETSC_MPI_INCLUDE_DIRS)
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set(PETSC_MPI_FOUND 1)
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endif(PETSC_MPI_INCLUDE_DIRS)
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endif(NOT PETSC_MPI_INCLUDE_DIRS)
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# couldn't find any usable mpi implementation - abort
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if(NOT PETSC_MPI_FOUND)
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message(STATUS "Could not find any suitable MPI implementation.")
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return()
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endif()
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# look for actual Petsc library
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if (NOT PETSC_LIBRARY)
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find_library(PETSC_LIBRARY
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NAMES "petsc-3.4.3" "petsc-3.4.4" "petsc"
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PATHS ${PETSC_ROOT}
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PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH
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${_no_default_path}
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)
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endif()
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if(NOT PETSC_LIBRARY)
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message(STATUS "Directory with the SuperLU library not found")
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message(STATUS "Could not find the PETSc library")
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return()
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_LIBRARY}")
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if (PETSC_MPIUNI_INCLUDE_DIR AND PETSC_NORMAL_INCLUDE_DIR)
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list (APPEND PETSC_INCLUDE_DIR ${PETSC_MPIUNI_INCLUDE_DIR} ${PETSC_NORMAL_INCLUDE_DIR})
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_LIBRARY}" "${PETSC_MPI_LIBRARIES}")
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if (PETSC_MPI_INCLUDE_DIRS AND PETSC_NORMAL_INCLUDE_DIR)
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list (APPEND PETSC_INCLUDE_DIR ${PETSC_MPI_INCLUDE_DIRS} ${PETSC_NORMAL_INCLUDE_DIR})
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endif()
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include(FindPackageHandleStandardArgs)
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@ -112,17 +145,9 @@ mark_as_advanced(PETSC_INCLUDE_DIR PETSC_LIBRARY)
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# if both headers and library are found, store results
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if(PETSC_FOUND)
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set(PETSC_INCLUDE_DIRS ${PETSC_INCLUDE_DIR})
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set(PETSC_LIBRARIES ${PETSC_LIBRARY})
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if (PETSC_BLAS_LIBRARY)
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list(APPEND PETSC_LIBRARIES ${PETSC_BLAS_LIBRARY})
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endif()
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if (PETSC_LAPACK_LIBRARY)
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list(APPEND PETSC_LIBRARIES ${PETSC_LAPACK_LIBRARY})
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endif()
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if (PETSC_X11_LIBRARY)
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list(APPEND PETSC_LIBRARIES ${PETSC_X11_LIBRARY})
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endif()
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endif()
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