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https://github.com/OPM/opm-simulators.git
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5630710986
Removes a lot of the conditionals in the makefile. As reflected in the comments, find_* won't run if the target variable is already set, and appending empty list elements changes nothing. In order to make reading the file easier these conditionals have mostly been removed.
154 lines
4.7 KiB
CMake
154 lines
4.7 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 * ${CMAKE_SIZEOF_VOID_P}")
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endif (CMAKE_SIZEOF_VOID_P)
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# if PETSC_ROOT is set, then this is the only place searched for petsc headers
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# and includes
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set(_no_default_path "")
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if(PETSC_ROOT)
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set (_no_default_path "NO_DEFAULT_PATH")
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endif()
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# look for a system-wide BLAS library
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set(PETSC_BLAS_LIBRARY "")
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find_package(BLAS QUIET)
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list(APPEND PETSC_BLAS_LIBRARY "${BLAS_LIBRARIES}")
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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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)
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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 "${PETSC_BLAS_LIBRARY}")
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set(PETSC_LAPACK_LIBRARY "")
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find_package(LAPACK QUIET)
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list(APPEND PETSC_LAPACK_LIBRARY "${LAPACK_LIBRARIES}")
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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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)
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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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find_path (PETSC_NORMAL_INCLUDE_DIR
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NAMES "petsc.h"
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PATHS ${PETSC_ROOT}
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PATH_SUFFIXES "petsc-3.4.4" "include" "petsc"
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${_no_default_path}
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)
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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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)
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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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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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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 "${PETSC_LIBRARY}" "${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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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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list(APPEND PETSC_LIBRARIES ${PETSC_BLAS_LIBRARY})
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list(APPEND PETSC_LIBRARIES ${PETSC_LAPACK_LIBRARY})
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list(APPEND PETSC_LIBRARIES ${PETSC_X11_LIBRARY})
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endif()
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