# Disallow in-source builds as the git project cluttered with generated files
# probably confuses people. source/build* is still allowed!
if("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")
    message(FATAL_ERROR "In-source builds are not allowed!\n"
        "Make sure to remove CMakeCache.txt and CMakeFiles/ "
        "from the source directory!")
endif()

# Set additional CMake modules path
CPMAddPackage(
    NAME cmake-modules
    GITHUB_REPOSITORY bilke/cmake-modules
    GIT_TAG cdc041689061fbb2df086b059fe71ac868cf626d
    DOWNLOAD_ONLY YES
)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
  "${PROJECT_SOURCE_DIR}/scripts/cmake"
  "${PROJECT_SOURCE_DIR}/scripts/cmake/jedbrown"
  "${PROJECT_SOURCE_DIR}/scripts/cmake/vector-of-bool"
  "${cmake-modules_SOURCE_DIR}"
)

list(APPEND CMAKE_PREFIX_PATH
  $ENV{HOMEBREW_ROOT}             # Homebrew package manager on Mac OS
  $ENV{CMAKE_LIBRARY_SEARCH_PATH} # Environment variable, Windows
  ${CMAKE_LIBRARY_SEARCH_PATH})   # CMake option, Windows

# Load additional modules
include(GNUInstallDirs)
include(ProcessorCount)
ProcessorCount(NUM_PROCESSORS)
set(NUM_PROCESSORS ${NUM_PROCESSORS} CACHE STRING "Processor count")

# Check if this project is included in another
if(NOT PROJECT_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
    set(_IS_SUBPROJECT ON CACHE INTERNAL "" FORCE)
    set(OGS_BUILD_CLI OFF CACHE BOOL "" FORCE)
endif()

if((NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    OR (NOT CMAKE_BUILD_TYPE AND MSVC AND OGS_USE_CONAN))
    message(STATUS "Setting build type to 'Debug' as none was specified.")
    set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
        "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()

# Get the hostname
site_name(HOSTNAME)

if(BUILD_SHARED_LIBS)
    # When static libraries are used in some shared libraries it is required
    # that also the static libraries have position independent code.
    set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)

    # Enable Windows DLL support.
    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
endif()