# ##############################################################################
# Find tools
# ##############################################################################

string(REPLACE ".windows.1" "" GIT_VERSION_STRING ${GIT_VERSION_STRING})
if(${GIT_VERSION_STRING} VERSION_LESS ${ogs.minimum_version.git})
    message(FATAL_ERROR "Git version ${ogs.minimum_version.git} is required. \
        Found version ${GIT_VERSION_STRING}."
    )
endif()

find_package(Doxygen OPTIONAL_COMPONENTS dot)

# Find gnu profiler gprof
find_program(GPROF_PATH gprof DOC "GNU profiler gprof" QUIET)

find_program(CPPCHECK_TOOL_PATH cppcheck)

# Find bash itself ...
find_program(
    BASH_TOOL_PATH bash HINTS ${GITHUB_BIN_DIR} DOC "The bash executable"
)

find_program(CURL_TOOL_PATH curl DOC "The curl-tool")

find_program(S3CMD_TOOL_PATH s3cmd DOC "S3cmd tool for uploading to Amazon S3")

if(WIN32)
    find_program(CLCACHE_TOOL_PATH clcache)
else()
    find_program(CCACHE_TOOL_PATH ccache)
endif()

# Tools for web
find_program(
    VTKJS_CONVERTER vtkDataConverter
    PATHS ${PROJECT_SOURCE_DIR}/web/node_modules/.bin
)
find_program(HUGO hugo)
find_program(NPM npm)
find_program(YARN yarn)
find_program(PIP pip)
find_program(PANDOC_CITEPROC pandoc-citeproc)

find_program(MODULE_CMD lmod PATHS /software/lmod/lmod/libexec)

find_program(SNAKEMAKE snakemake HINTS ${LOCAL_VIRTUALENV_BIN_DIRS})

find_program(GMSH gmsh)

# ##############################################################################
# Find libraries
# ##############################################################################
if(OGS_USE_MFRONT)
    # pthread, is a requirement of mfront ##
    set(CMAKE_THREAD_PREFER_PTHREAD ON)
    set(THREADS_PREFER_PTHREAD_FLAG ON)
    find_package(Threads REQUIRED)
    if(CMAKE_USE_PTHREADS_INIT)
        set(HAVE_PTHREADS TRUE)
        add_definitions(-DHAVE_PTHREADS)
    endif()
    if(OGS_USE_CONAN)
        # cmake-lint: disable=C0103
        set(TFELHOME ${CONAN_TFEL_ROOT} CACHE INTERNAL "")
    endif()
endif()

# Do not search for libs if this option is set
if(OGS_NO_EXTERNAL_LIBS)
    return()
endif() # OGS_NO_EXTERNAL_LIBS

find_package(OpenMP)
if(OPENMP_FOUND)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
    set(CMAKE_EXE_LINKER_FLAGS
        "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}"
    )
endif()

# Qt5 library ##
if(OGS_BUILD_GUI)
    set(QT_MODULES Gui Widgets Xml XmlPatterns)
    if(UNIX AND NOT APPLE)
        list(APPEND QT_MODULES X11Extras)
    endif()
    find_package(Qt5 ${ogs.minimum_version.qt} REQUIRED ${QT_MODULES})
    cmake_policy(SET CMP0020 NEW)
endif()

if(OGS_USE_NETCDF)
    set(NETCDF_ROOT ${CONAN_NETCDF-C_ROOT})
    set(NETCDF_CXX_ROOT ${CONAN_NETCDF-CXX_ROOT})
    find_package(NetCDF REQUIRED)
    add_compile_options(-DOGS_USE_NETCDF)
endif()

# lapack
find_package(LAPACK QUIET)

# geotiff ##
find_package(GEOTIFF)

# lis ##
if(OGS_USE_LIS)
    find_package(LIS REQUIRED)
endif()

if(OGS_USE_MKL)
    find_package(MKL REQUIRED)
endif()

if(OGS_USE_PETSC)
    message(STATUS "Configuring for PETSc")

    option(FORCE_PETSC_EXECUTABLE_RUNS
           "Force CMake to accept a given PETSc configuration" ON
    )

    # Force CMake to accept a given PETSc configuration in case the failure of
    # MPI tests. This may cause the compilation broken.
    if(FORCE_PETSC_EXECUTABLE_RUNS)
        set(PETSC_EXECUTABLE_RUNS YES)
    endif()

    find_package(PETSc ${ogs.minimum_version.petsc} REQUIRED)

    include_directories(SYSTEM ${PETSC_INCLUDES})
endif()

# Check MPI package
if(OGS_USE_MPI)
    find_package(MPI REQUIRED)
endif()

find_package(Filesystem REQUIRED COMPONENTS Final Experimental)
configure_file(
    ${PROJECT_SOURCE_DIR}/BaseLib/filesystem.h.in
    ${PROJECT_BINARY_DIR}/BaseLib/filesystem.h
)