# Copyright (c) 2008-2023 the Urho3D project
# Copyright (c) 2022-2023 the Dviglo project
# License: MIT

# Check existence of various header files and their functions required by some of the third-party libraries and Urho3D library
# Set the CMake variables in this scope but only add the compiler defines in the respective library's scope
include (CheckIncludeFile)
foreach (HEADER stdint.h inttypes.h malloc.h)
    string (TOUPPER HAVE_${HEADER} HAVE_HEADER)
    string (REPLACE . _ HAVE_HEADER ${HAVE_HEADER})
    check_include_file (${HEADER} ${HAVE_HEADER})
endforeach ()
include (CheckFunctionExists)
foreach (FUNCT __sincosf malloc_usable_size)
    string (TOUPPER HAVE_${FUNCT} HAVE_FUNCT)
    check_function_exists (${FUNCT} ${HAVE_FUNCT})
endforeach ()
include (CheckLibraryExists)
check_library_exists (m sincosf "" HAVE_SINCOSF)
if (MINGW)
    include (CheckStructHasMember)
    check_struct_has_member (RTL_OSVERSIONINFOW dwOSVersionInfoSize minwindef.h\;winnt.h HAVE_RTL_OSVERSIONINFOW)
endif ()

# Setup RPATH settings
if (URHO3D_LIB_TYPE STREQUAL SHARED AND NOT WIN32 AND NOT ANDROID AND NOT IOS AND NOT TVOS AND NOT WEB)
    # Add RPATH entries when building
    set (CMAKE_SKIP_BUILD_RPATH FALSE)
    # And set the RPATH entries so that the executable works both in the build tree and install destination
    set (CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
    if (APPLE)
        set (CMAKE_MACOSX_RPATH TRUE)
        set (ORIGIN @loader_path)
    else ()
        set (ORIGIN $ORIGIN)
    endif ()
    # Library location relative to the executable in the build tree
    set (CMAKE_INSTALL_RPATH ${ORIGIN}/../lib)
    # Library location relative to the executable in the tool directory in the build tree
    list (APPEND CMAKE_INSTALL_RPATH ${ORIGIN}/../../lib)                               # The tools are installed one directory further down from normal executable
    # Library location relative to the executable in the install destination
    list (APPEND CMAKE_INSTALL_RPATH ${ORIGIN}/../lib${LIB_SUFFIX}/${PATH_SUFFIX})      # The library location is based on SDK install destination
    # Library location relative to the executable in the tool directory in the install destination
    list (APPEND CMAKE_INSTALL_RPATH ${ORIGIN}/../../lib${LIB_SUFFIX}/${PATH_SUFFIX})
    # The last entry to the install destination of the library, if the destination location is not in the system default search path, e.g. /usr/local/lib
    list (FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX} isSystemDir)
    if (isSystemDir STREQUAL -1)
        list (APPEND CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/${DEST_LIBRARY_DIR})
    endif ()
endif ()

add_subdirectory (ThirdParty)
add_subdirectory (Urho3D)

# In order to get clean module segregation, always exclude player/samples from AAR
if (NOT ANDROID)
    add_subdirectory (Tools)
    add_subdirectory (Samples)
endif ()

if (URHO3D_EXTRAS)
    add_subdirectory (Extras)
endif ()