# PhysicsFS; a portable, flexible file i/o abstraction.
#
# Please see the file LICENSE.txt in the source's root directory.

# The CMake project file is meant to get this compiling on all sorts of
#  platforms quickly, and serve as the way Unix platforms and Linux distros
#  package up official builds, but you don't _need_ to use this; we have
#  built PhysicsFS to (hopefully) be able to drop into your project and
#  compile, using preprocessor checks for platform-specific bits instead of
#  testing in here.

set(PHYSFS_VERSION 3.3.0)

cmake_minimum_required(VERSION 3.5...4.0)

project(PhysicsFS VERSION ${PHYSFS_VERSION} LANGUAGES C )

include(CMakeDependentOption)
include(GNUInstallDirs)
include("${PROJECT_SOURCE_DIR}/cmake/GetGitRevisionDescription.cmake")
include("${PROJECT_SOURCE_DIR}/cmake/PrivateSdlFunctions.cmake")
include("${PROJECT_SOURCE_DIR}/cmake/sdlmanpages.cmake")

# Increment this if/when we break backwards compatibility.
set(PHYSFS_SOVERSION 1)

set(PHYSFS_M_SRCS)
set(PHYSFS_CPP_SRCS)

option(PHYSFS_WERROR "Treat warnings as errors" OFF)

if(WIN32)
    list(APPEND OPTIONAL_LIBRARY_LIBS advapi32 shell32)
endif()

if(APPLE)
    set(OTHER_LDFLAGS ${OTHER_LDFLAGS} "-framework IOKit -framework Foundation")
    list(APPEND PHYSFS_M_SRCS src/physfs_platform_apple.m)
endif()

if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")
    add_compile_options(-Wall)
endif()

if(CMAKE_C_COMPILER_ID STREQUAL "SunPro")
    add_definitions(-erroff=E_EMPTY_TRANSLATION_UNIT)
    add_definitions(-xldscope=hidden)
endif()

if(HAIKU)
    # We add this explicitly, since we don't want CMake to think this
    #  is a C++ project unless we're on Haiku.
    list(APPEND PHYSFS_CPP_SRCS src/physfs_platform_haiku.cpp)
    find_library(BE_LIBRARY be)
    find_library(ROOT_LIBRARY root)
    list(APPEND OPTIONAL_LIBRARY_LIBS ${BE_LIBRARY} ${ROOT_LIBRARY})
endif()

if(CMAKE_SYSTEM_NAME STREQUAL "WindowsPhone" OR CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
    set(WINRT TRUE)
endif()

if(WINRT)
    list(APPEND PHYSFS_CPP_SRCS src/physfs_platform_winrt.cpp)
endif()

if(UNIX AND NOT WIN32 AND NOT APPLE)  # (MingW and such might be UNIX _and_ WINDOWS!)
    find_library(PTHREAD_LIBRARY pthread)
    if(PTHREAD_LIBRARY)
        list(APPEND OPTIONAL_LIBRARY_LIBS ${PTHREAD_LIBRARY})
    endif()
endif()

if(PHYSFS_CPP_SRCS)
    enable_language(CXX)
endif()

# Almost everything is "compiled" here, but things that don't apply to the
#  build are #ifdef'd out. This is to make it easy to embed PhysicsFS into
#  another project or bring up a new build system: just compile all the source
#  code and #define the things you want.
set(PHYSFS_SRCS
    src/physfs.c
    src/physfs_byteorder.c
    src/physfs_unicode.c
    src/physfs_platform_cafe.c
    src/physfs_platform_ctr.c
    src/physfs_platform_posix.c
    src/physfs_platform_unix.c
    src/physfs_platform_windows.c
    src/physfs_platform_ogc.c
    src/physfs_platform_os2.c
    src/physfs_platform_qnx.c
    src/physfs_platform_android.c
    src/physfs_platform_libretro.c
    src/physfs_platform_playdate.c
    src/physfs_archiver_dir.c
    src/physfs_archiver_unpacked.c
    src/physfs_archiver_grp.c
    src/physfs_archiver_hog.c
    src/physfs_archiver_7z.c
    src/physfs_archiver_mvl.c
    src/physfs_archiver_qpak.c
    src/physfs_archiver_rofs.c
    src/physfs_archiver_wad.c
    src/physfs_archiver_csm.c
    src/physfs_archiver_zip.c
    src/physfs_archiver_slb.c
    src/physfs_archiver_iso9660.c
    src/physfs_archiver_vdf.c
    src/physfs_archiver_lec3d.c
    src/physfs_archiver_pod.c
    src/physfs_version.rc
    ${PHYSFS_CPP_SRCS}
    ${PHYSFS_M_SRCS}
)


# Archivers ...
# These are (mostly) on by default now, so these options are only useful for
#  disabling them.

option(PHYSFS_ARCHIVE_ZIP "Enable ZIP support" TRUE)
if(NOT PHYSFS_ARCHIVE_ZIP)
    add_definitions(-DPHYSFS_SUPPORTS_ZIP=0)
endif()

option(PHYSFS_ARCHIVE_7Z "Enable 7zip support" TRUE)
if(NOT PHYSFS_ARCHIVE_7Z)
    add_definitions(-DPHYSFS_SUPPORTS_7Z=0)
endif()

option(PHYSFS_ARCHIVE_GRP "Enable Build Engine GRP support" TRUE)
if(NOT PHYSFS_ARCHIVE_GRP)
    add_definitions(-DPHYSFS_SUPPORTS_GRP=0)
endif()

option(PHYSFS_ARCHIVE_WAD "Enable Doom WAD support" TRUE)
if(NOT PHYSFS_ARCHIVE_WAD)
    add_definitions(-DPHYSFS_SUPPORTS_WAD=0)
endif()

option(PHYSFS_ARCHIVE_CSM "Enable Chasm: The Rift CSM.BIN support" TRUE)
if(NOT PHYSFS_ARCHIVE_CSM)
    add_definitions(-DPHYSFS_SUPPORTS_CSM=0)
endif()

option(PHYSFS_ARCHIVE_HOG "Enable Descent I/II HOG support" TRUE)
if(NOT PHYSFS_ARCHIVE_HOG)
    add_definitions(-DPHYSFS_SUPPORTS_HOG=0)
endif()

option(PHYSFS_ARCHIVE_MVL "Enable Descent I/II MVL support" TRUE)
if(NOT PHYSFS_ARCHIVE_MVL)
    add_definitions(-DPHYSFS_SUPPORTS_MVL=0)
endif()

option(PHYSFS_ARCHIVE_QPAK "Enable Quake I/II QPAK support" TRUE)
if(NOT PHYSFS_ARCHIVE_QPAK)
    add_definitions(-DPHYSFS_SUPPORTS_QPAK=0)
endif()

option(PHYSFS_ARCHIVE_ROFS "Enable Resident Evil 3 ROFS support" TRUE)
if(NOT PHYSFS_ARCHIVE_ROFS)
    add_definitions(-DPHYSFS_SUPPORTS_ROFS=0)
endif()

option(PHYSFS_ARCHIVE_SLB "Enable I-War / Independence War SLB support" TRUE)
if(NOT PHYSFS_ARCHIVE_SLB)
    add_definitions(-DPHYSFS_SUPPORTS_SLB=0)
endif()

option(PHYSFS_ARCHIVE_ISO9660 "Enable ISO9660 support" TRUE)
if(NOT PHYSFS_ARCHIVE_ISO9660)
    add_definitions(-DPHYSFS_SUPPORTS_ISO9660=0)
endif()

option(PHYSFS_ARCHIVE_VDF "Enable Gothic I/II VDF archive support" TRUE)
if(NOT PHYSFS_ARCHIVE_VDF)
    add_definitions(-DPHYSFS_SUPPORTS_VDF=0)
endif()

option(PHYSFS_ARCHIVE_LECARCHIVES "Enable LucasArts GOB/LAB/LFD Archive support" TRUE)
if(NOT PHYSFS_ARCHIVE_LECARCHIVES)
    add_definitions(-DPHYSFS_SUPPORTS_LECARCHIVES=0)
endif()

option(PHYSFS_ARCHIVE_POD "Enable Terminal Reality POD Archive support" TRUE)
if(NOT PHYSFS_ARCHIVE_POD)
    add_definitions(-DPHYSFS_SUPPORTS_POD=0)
endif()


option(PHYSFS_BUILD_STATIC "Build static library" TRUE)
if(PHYSFS_BUILD_STATIC)
    add_library(physfs-static STATIC ${PHYSFS_SRCS})
    add_library(PhysFS::PhysFS-static ALIAS physfs-static)
    sdl_add_warning_options(physfs-static WARNING_AS_ERROR ${PHYSFS_WERROR})
    set_property(TARGET physfs-static PROPERTY EXPORT_NAME PhysFS-static)
    # Don't rename this on Windows, since DLLs will also produce an import
    #  library named "physfs.lib" which would conflict; Unix tend to like the
    #  same library name with a different extension for static libs, but
    #  Windows can just have a separate name.
    if(NOT MSVC)
        set_property(TARGET physfs-static PROPERTY OUTPUT_NAME "physfs")
    endif()
    if(WINRT)
        # Ignore LNK4264 warnings; we don't author any WinRT components, just consume them, so we're okay in a static library.
        set_property(TARGET physfs-static PROPERTY VS_WINRT_COMPONENT TRUE)
        set_property(TARGET physfs-static PROPERTY STATIC_LIBRARY_FLAGS "/ignore:4264")
    endif()
    if(WIN32 OR WINRT OR OS2)
        # no dll exports from the static library
        target_compile_definitions(physfs-static PRIVATE "PHYSFS_STATIC")
    endif()
    target_include_directories(physfs-static PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
    target_link_libraries(physfs-static PRIVATE ${OPTIONAL_LIBRARY_LIBS} ${OTHER_LDFLAGS})
    list(APPEND PHYSFS_INSTALL_TARGETS "physfs-static")
endif()

option(PHYSFS_BUILD_SHARED "Build shared library" TRUE)
if(PHYSFS_BUILD_SHARED)
    add_library(physfs-shared SHARED ${PHYSFS_SRCS})
    add_library(PhysFS::PhysFS-shared ALIAS physfs-shared)
    sdl_add_warning_options(physfs-shared WARNING_AS_ERROR ${PHYSFS_WERROR})
    set_property(TARGET physfs-shared PROPERTY OUTPUT_NAME "physfs")
    set_property(TARGET physfs-shared PROPERTY MACOSX_RPATH 1)
    set_property(TARGET physfs-shared PROPERTY VERSION ${PHYSFS_VERSION})
    set_property(TARGET physfs-shared PROPERTY SOVERSION ${PHYSFS_SOVERSION})
    set_property(TARGET physfs-shared PROPERTY EXPORT_NAME PhysFS-shared)
    if(WIN32)
        set_property(TARGET physfs-shared PROPERTY PREFIX "")
    endif()
    if(MINGW)
        target_link_options(physfs-shared PRIVATE -static-libgcc)
    endif()
    if(WINRT)
        set_property(TARGET physfs-shared PROPERTY VS_WINRT_COMPONENT TRUE)
    endif()
    target_include_directories(physfs-shared PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
    target_link_libraries(physfs-shared PRIVATE ${OPTIONAL_LIBRARY_LIBS} ${OTHER_LDFLAGS})
    list(APPEND PHYSFS_INSTALL_TARGETS "physfs-shared")
endif()

if(NOT PHYSFS_BUILD_SHARED AND NOT PHYSFS_BUILD_STATIC)
    message(FATAL "Both shared and static libraries are disabled!")
endif()

if(TARGET physfs-shared)
    add_library(PhysFS::PhysFS ALIAS physfs-shared)
elseif(TARGET PhysFS::PhysFS-static)
    add_library(PhysFS::PhysFS ALIAS physfs-static)
endif()

option(PHYSFS_BUILD_TEST "Build stdio test program." TRUE)
mark_as_advanced(PHYSFS_BUILD_TEST)
if(PHYSFS_BUILD_TEST)
    add_executable(test_physfs test/test_physfs.c)
    target_link_libraries(test_physfs PRIVATE PhysFS::PhysFS)
    sdl_add_warning_options(test_physfs WARNING_AS_ERROR ${PHYSFS_WERROR})

    find_path(READLINE_H readline/readline.h)
    find_path(HISTORY_H readline/history.h)
    find_library(READLINE_LIBRARY readline)
    find_package(Curses)
    if(READLINE_H AND HISTORY_H AND READLINE_LIBRARY AND CURSES_FOUND)
        set(HAVE_SYSTEM_READLINE TRUE)
        target_link_libraries(test_physfs PRIVATE ${READLINE_LIBRARY} ${CURSES_LIBRARIES})
        target_include_directories(test_physfs SYSTEM PRIVATE ${READLINE_H} ${HISTORY_H})
        target_compile_definitions(test_physfs PRIVATE PHYSFS_HAVE_READLINE=1)
    endif()
    list(APPEND PHYSFS_INSTALL_TARGETS test_physfs)

    if(UNIX)
        add_executable(physfshttpd extras/physfshttpd.c)
        target_link_libraries(physfshttpd PRIVATE PhysFS::PhysFS)
        sdl_add_warning_options(physfshttpd WARNING_AS_ERROR ${PHYSFS_WERROR})
    endif()
endif()

option(PHYSFS_INSTALL "Enable PhysFS installation" ON)
cmake_dependent_option(PHYSFS_INSTALL_MAN "Install man pages for PhysicsFS" OFF "PHYSFS_INSTALL" OFF)
if(PHYSFS_INSTALL)
    if(MSVC)
        set(PHYSFS_INSTALL_CMAKEDIR "cmake")
    else()
        set(PHYSFS_INSTALL_CMAKEDIR "${CMAKE_INSTALL_LIBDIR}/cmake/PhysFS")
    endif()

    if(TARGET physfs-shared)
        install(TARGETS physfs-shared EXPORT physfs-shared-exports
            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
            INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
        install(EXPORT physfs-shared-exports
            DESTINATION "${PHYSFS_INSTALL_CMAKEDIR}"
            FILE PhysFS-shared-targets.cmake
            NAMESPACE PhysFS::
        )
        export(TARGETS physfs-shared NAMESPACE PhysFS:: FILE PhysFS-shared-targets.cmake)
        if(MSVC)
            SDL_install_pdb(physfs-shared "${CMAKE_INSTALL_BINDIR}")
        endif()
    endif()
    if(TARGET physfs-static)
        install(TARGETS physfs-static EXPORT physfs-static-exports
            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
            INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
        install(EXPORT physfs-static-exports
            DESTINATION "${PHYSFS_INSTALL_CMAKEDIR}"
            FILE PhysFS-static-targets.cmake
            NAMESPACE PhysFS::
        )
        export(TARGETS physfs-static NAMESPACE PhysFS:: FILE PhysFS-static-targets.cmake)
        if(MSVC)
            SDL_install_pdb(physfs-static "${CMAKE_INSTALL_LIBDIR}")
        endif()
    endif()
    if(TARGET test_physfs)
        install(TARGETS test_physfs RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
    endif()
    install(FILES src/physfs.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

    include(CMakePackageConfigHelpers)
    configure_package_config_file(cmake/PhysFSConfig.cmake.in PhysFSConfig.cmake
        NO_SET_AND_CHECK_MACRO
        PATH_VARS CMAKE_INSTALL_PREFIX
        INSTALL_DESTINATION "${PHYSFS_INSTALL_CMAKEDIR}"
    )
    write_basic_package_version_file(PhysFSConfigVersion.cmake
        COMPATIBILITY SameMajorVersion
    )
    install(FILES
        "${CMAKE_CURRENT_BINARY_DIR}/PhysFSConfig.cmake"
        "${CMAKE_CURRENT_BINARY_DIR}/PhysFSConfigVersion.cmake"
        DESTINATION "${PHYSFS_INSTALL_CMAKEDIR}"
    )
    install(FILES LICENSE.txt
        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/licenses/PhysicsFS${PROJECT_VERSION_MAJOR}")

    configure_file(cmake/cmake_uninstall.cmake.in cmake_uninstall.cmake IMMEDIATE @ONLY)
    add_custom_target(uninstall-physfs
        COMMAND ${CMAKE_COMMAND} -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")

    if(NOT MSVC)
        configure_file(cmake/physfs.pc.in physfs.pc @ONLY)
        install(
            FILES "${CMAKE_CURRENT_BINARY_DIR}/physfs.pc"
            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
        )
    endif()

    if(PHYSFS_INSTALL_MAN)
        sdl_get_git_revision_hash(PHYSFS_REVISION)
        SDL_generate_manpages(
            HEADERS_DIR "${PROJECT_SOURCE_DIR}/src/physfs.h"
            SYMBOL "PHYSFS_init"
            WIKIHEADERS_PL_PATH "${PROJECT_SOURCE_DIR}/build-scripts/wikiheaders.pl"
            REVISION "${PHYSFS_REVISION}"
        )
    endif()
endif()

option(PHYSFS_BUILD_DOCS "Build doxygen based documentation" TRUE)
if(PHYSFS_BUILD_DOCS)
    find_package(Doxygen)
    if(DOXYGEN_FOUND)
        set(PHYSFS_OUTPUT_DOXYFILE "${CMAKE_CURRENT_BINARY_DIR}/Doxyfile")
        configure_file(
            "${CMAKE_CURRENT_SOURCE_DIR}/docs/Doxyfile"
            "${PHYSFS_OUTPUT_DOXYFILE}"
            COPYONLY
        )
        file(APPEND "${PHYSFS_OUTPUT_DOXYFILE}" "\n\n# Below auto-generated by cmake...\n\n")
        file(APPEND "${PHYSFS_OUTPUT_DOXYFILE}" "PROJECT_NUMBER = \"${PHYSFS_VERSION}\"\n")
        file(APPEND "${PHYSFS_OUTPUT_DOXYFILE}" "OUTPUT_DIRECTORY = \"${CMAKE_CURRENT_BINARY_DIR}/docs\"\n")
        file(APPEND "${PHYSFS_OUTPUT_DOXYFILE}" "\n# End auto-generated section.\n\n")

        set(PHYSFS_TARGETNAME_DOCS "docs" CACHE STRING "Name of 'docs' build target")

        add_custom_target(
            ${PHYSFS_TARGETNAME_DOCS}
            ${DOXYGEN_EXECUTABLE} "${PHYSFS_OUTPUT_DOXYFILE}"
            WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
            COMMENT "Building documentation in 'docs' directory..."
        )

    else()
        message(STATUS "Doxygen not found. You won't be able to build documentation.")
    endif()
endif()

macro(message_bool_option _NAME _VALUE)
    if(${_VALUE})
        message(STATUS "  ${_NAME}: enabled")
    else()
        message(STATUS "  ${_NAME}: disabled")
    endif()
endmacro()

message(STATUS "PhysicsFS will build with the following options:")
message_bool_option("ZIP support" PHYSFS_ARCHIVE_ZIP)
message_bool_option("7zip support" PHYSFS_ARCHIVE_7Z)
message_bool_option("GRP support" PHYSFS_ARCHIVE_GRP)
message_bool_option("WAD support" PHYSFS_ARCHIVE_WAD)
message_bool_option("CSM support" PHYSFS_ARCHIVE_CSM)
message_bool_option("HOG support" PHYSFS_ARCHIVE_HOG)
message_bool_option("MVL support" PHYSFS_ARCHIVE_MVL)
message_bool_option("QPAK support" PHYSFS_ARCHIVE_QPAK)
message_bool_option("ROFS support" PHYSFS_ARCHIVE_ROFS)
message_bool_option("SLB support" PHYSFS_ARCHIVE_SLB)
message_bool_option("VDF support" PHYSFS_ARCHIVE_VDF)
message_bool_option("ISO9660 support" PHYSFS_ARCHIVE_ISO9660)
message_bool_option("GOB/LAB/LFD support" PHYSFS_ARCHIVE_LECARCHIVES)
message_bool_option("POD support" PHYSFS_ARCHIVE_POD)
message_bool_option("Build static library" PHYSFS_BUILD_STATIC)
message_bool_option("Build shared library" PHYSFS_BUILD_SHARED)
message_bool_option("Build stdio test program" PHYSFS_BUILD_TEST)
message_bool_option("Build Doxygen documentation" PHYSFS_BUILD_DOCS)
if(PHYSFS_BUILD_TEST)
    message_bool_option("  Use readline in test program" HAVE_SYSTEM_READLINE)
endif()

# end of CMakeLists.txt ...