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https://github.com/OPM/opm-simulators.git
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33914bcceb
The FindPetsc module would check for a PETSC_ROOT and not attempt to look for mpi and the petsc header if this was not set, which it in most cases won't be. If the variable is set then the conditional include is redundant, as it will search the explicitly passed paths first anyways.
125 lines
3.8 KiB
CMake
125 lines
3.8 KiB
CMake
# - Try to find Petsc lib
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#
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# This module supports requiring a minimum version, e.g. you can do
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# find_package(Petsc)
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#
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# Once done this will define
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#
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# PETSC_FOUND - system has Petsc lib with correct version
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# PETSC_INCLUDE_DIRS - the Petsc include directory
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# PETSC_LIBRARIES - the Petsc library.
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# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
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# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
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# Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
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# Redistribution and use is allowed according to the terms of the 2-clause BSD license.
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# find out the size of a pointer. this is required to only search for
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# libraries in the directories relevant for the architecture
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if (CMAKE_SIZEOF_VOID_P)
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math (EXPR _BITS "8 * ${CMAKE_SIZEOF_VOID_P}")
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endif (CMAKE_SIZEOF_VOID_P)
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# look for a system-wide BLAS library
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find_package(BLAS QUIET)
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set(PETSC_BLAS_LIBRARY "")
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if (BLAS_FOUND)
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list(APPEND PETSC_BLAS_LIBRARY "${BLAS_LIBRARIES}")
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elseif(PETSC_ROOT)
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find_library(PETST_BLAS_LIBRARY
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NAME "blas"
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PATH ${PETSC_ROOT}
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PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH)
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endif()
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# print message if there was still no blas found!
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if(NOT BLAS_FOUND AND NOT PETSC_BLAS_LIBRARY)
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message(STATUS "BLAS not found but required for PETSC")
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return()
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${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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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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NAME "lapack"
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PATH ${PETSC_ROOT}
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PATH_SUFFIXES "lib" "lib${_BITS}" "lib/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH)
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endif()
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# print message if there was still no blas found!
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if(NOT LAPACK_FOUND AND NOT PETSC_LAPACK_LIBRARY)
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message(STATUS "LAPACK not found but required for PETSC")
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return()
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${PETSC_LAPACK_LIBRARY}")
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find_package(X11 QUIET)
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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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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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)
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endif (NOT PETSC_NORMAL_INCLUDE_DIR)
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if (NOT PETSC_MPIUNI_INCLUDE_DIR)
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find_path (PETSC_MPIUNI_INCLUDE_DIR
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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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)
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endif (NOT PETSC_MPIUNI_INCLUDE_DIR)
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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/${CMAKE_LIBRARY_ARCHITECTURE}"
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NO_DEFAULT_PATH
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)
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endif()
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if(NOT PETSC_LIBRARY)
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message(STATUS "Could not find the PETSc library")
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return()
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endif()
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${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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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Petsc DEFAULT_MSG PETSC_INCLUDE_DIR PETSC_LIBRARY)
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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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