##############################################################################
# API tracers


if (ENABLE_STATIC_LIBGCC)
    add_linker_flags (-static-libgcc)
endif ()
if (ENABLE_STATIC_LIBSTDCXX)
    # Unfortunately for a long time static libstdcxx didn't built with -fPIC
    # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28811
    include (CheckCXXSourceCompiles)
    set (CMAKE_REQUIRED_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
    set (CMAKE_REQUIRED_LIBRARIES -shared -static-libgcc -static-libstdc++)
    check_cxx_source_compiles (
        "
            #include <string>
            std::string s;
        "
        STATIC_LIBSTDCXX_PIC
    )
    unset (CMAKE_REQUIRED_LIBRARIES)
    unset (CMAKE_REQUIRED_FLAGS)
    if (STATIC_LIBSTDCXX_PIC)
        add_linker_flags (-static-libstdc++)
    endif ()
endif ()

macro (target_linker_version_script target version_script)
    if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND NOT ANDROID)
        # https://sourceware.org/binutils/docs/ld/VERSION.html
        set_property (
            TARGET ${target}
            APPEND_STRING
            PROPERTY LINK_FLAGS " -Wl,--version-script=${version_script}"
        )
        # XXX: Unfortunately LINK_DEPENDS is ignored in non-Makefile generators
        # See also http://www.cmake.org/pipermail/cmake/2010-May/037206.html
        set_property (
            TARGET ${target}
            PROPERTY LINK_DEPENDS ${version_script}
        )
    endif ()
endmacro ()

set (CMAKE_INCLUDE_CURRENT_DIR ON)

include_directories (
    ${CMAKE_SOURCE_DIR}/helpers
    ${CMAKE_BINARY_DIR}/dispatch
    ${CMAKE_SOURCE_DIR}/dispatch
    ${CMAKE_SOURCE_DIR}/lib/guids
    ${CMAKE_SOURCE_DIR}/thirdparty/crc32c
)

if (NOT WIN32 AND NOT APPLE)
    # Prevent symbol relocations internal to our wrapper library to be
    # overwritten by the application.  And fail if there are missing
    # symbols.
    set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-Bsymbolic -Wl,-Bsymbolic-functions")
    set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-Bsymbolic -Wl,-Bsymbolic-functions")

    # Fail if there are missing symbols, except when using Address Sanitizer
    # since libasan symbols are supposed to be preloaded.
    if (NOT ENABLE_ASAN)
        set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,defs")
        set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-z,defs")
    endif ()
endif ()

set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})

# Code shared across all APIs
add_convenience_library (trace
    assert.cpp
    memtrace.hpp
    memtrace.cpp
)
target_link_libraries (trace
    common
    guids
    crc32c
    ${SNAPPY_LIBRARIES}
)

# Code shared across all OpenGL variants
add_convenience_library (gltrace_common
    glcaps.cpp
    config.cpp
    gltrace_arrays.cpp
    gltrace_state.cpp
)
add_dependencies (gltrace_common glproc)
target_link_libraries (gltrace_common
    glhelpers
    trace
)

if (WIN32)
    if (MINGW)
        # Silence warnings about @nn suffix mismatch
        set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--enable-stdcall-fixup")
        set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--enable-stdcall-fixup")
    endif ()

    # ddraw.dll
    if (DirectX_D3D_INCLUDE_FOUND)
        include_directories (BEFORE SYSTEM ${DirectX_D3D_INCLUDE_DIR})
        add_custom_command (
            OUTPUT ddrawtrace.cpp
            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/ddrawtrace.py > ${CMAKE_CURRENT_BINARY_DIR}/ddrawtrace.cpp
            DEPENDS
                ddrawtrace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
                ${CMAKE_SOURCE_DIR}/specs/d3d.py
                ${CMAKE_SOURCE_DIR}/specs/d3dtypes.py
                ${CMAKE_SOURCE_DIR}/specs/d3dcaps.py
                ${CMAKE_SOURCE_DIR}/specs/ddraw.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
        )
        add_library (ddrawtrace MODULE ddraw.def ddrawtrace.cpp)
        target_link_libraries (ddrawtrace
            trace
        )
        set_target_properties (ddrawtrace PROPERTIES
            PREFIX ""
            OUTPUT_NAME ddraw
        )
        install (TARGETS ddrawtrace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
        install_pdb (ddrawtrace DESTINATION ${WRAPPER_INSTALL_DIR})
    endif ()

    # d3d8.dll
    if (DirectX_D3D8_INCLUDE_FOUND AND DirectX_D3D9_INCLUDE_FOUND)
        include_directories (BEFORE SYSTEM ${DirectX_D3D9_INCLUDE_DIR} ${DirectX_D3D8_INCLUDE_DIR})
        add_custom_command (
            OUTPUT d3d8trace.cpp
            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/d3d8trace.py > ${CMAKE_CURRENT_BINARY_DIR}/d3d8trace.cpp
            DEPENDS
                d3d8trace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
                ${CMAKE_SOURCE_DIR}/specs/d3d8.py
                ${CMAKE_SOURCE_DIR}/specs/d3d8types.py
                ${CMAKE_SOURCE_DIR}/specs/d3d8caps.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
        )
        add_library (d3d8trace MODULE
            d3d8.def
            d3d8trace.cpp
            d3d9shader.cpp
        )
        target_link_libraries (d3d8trace
            d3dhelpers
            trace
        )
        set_target_properties (d3d8trace PROPERTIES
            PREFIX ""
            OUTPUT_NAME d3d8
        )
        install (TARGETS d3d8trace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
        install_pdb (d3d8trace DESTINATION ${WRAPPER_INSTALL_DIR})
    endif ()

    # d3d9.dll
    if (DirectX_D3D9_INCLUDE_FOUND)
        include_directories (BEFORE SYSTEM ${DirectX_D3D9_INCLUDE_DIR})
        add_custom_command (
            OUTPUT d3d9trace.cpp
            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/d3d9trace.py > ${CMAKE_CURRENT_BINARY_DIR}/d3d9trace.cpp
            DEPENDS
                d3d9trace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
                ${CMAKE_SOURCE_DIR}/specs/d3d9.py
                ${CMAKE_SOURCE_DIR}/specs/d3d9types.py
                ${CMAKE_SOURCE_DIR}/specs/d3d9caps.py
                ${CMAKE_SOURCE_DIR}/specs/dxva2.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
        )
        add_library (d3d9trace MODULE
            d3d9.def
            d3d9trace.cpp
            d3d9shader.cpp
        )
        target_link_libraries (d3d9trace
            d3dhelpers
            trace
        )
        set_target_properties (d3d9trace PROPERTIES
            PREFIX ""
            OUTPUT_NAME d3d9
        )
        install (TARGETS d3d9trace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
        install_pdb (d3d9trace DESTINATION ${WRAPPER_INSTALL_DIR})
    endif ()

    # dxgi.dll, d3d10.dll, d3d10_1.dll, d3d11.dll
    if (DirectX_D3D11_3_INCLUDE_FOUND)
        include_directories (BEFORE SYSTEM ${DirectX_D3D11_3_INCLUDE_DIR})

        add_custom_command (
            OUTPUT dxgitrace.cpp
            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/dxgitrace.py > ${CMAKE_CURRENT_BINARY_DIR}/dxgitrace.cpp
            DEPENDS
                dxgitrace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
                ${CMAKE_SOURCE_DIR}/specs/d3d11.py
                ${CMAKE_SOURCE_DIR}/specs/dcomp.py
                ${CMAKE_SOURCE_DIR}/specs/d3d11sdklayers.py
                ${CMAKE_SOURCE_DIR}/specs/d3d10.py
                ${CMAKE_SOURCE_DIR}/specs/d3d10sdklayers.py
                ${CMAKE_SOURCE_DIR}/specs/dxgi.py
                ${CMAKE_SOURCE_DIR}/specs/d3d9.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
        )
        add_library (dxgitrace MODULE
            dxgitrace.def
            dxgitrace.cpp
            d3dcommonshader.cpp
        )
        target_link_libraries (dxgitrace
            d3dhelpers
            trace
        )
        set_target_properties (dxgitrace
            PROPERTIES PREFIX ""
        )
        install (TARGETS dxgitrace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
        install_pdb (dxgitrace DESTINATION ${WRAPPER_INSTALL_DIR})
    endif ()

    # d2d1.dll, dwrite.dll
    if (DirectX_D2D1_1_INCLUDE_FOUND)
        include_directories (BEFORE SYSTEM ${DirectX_D2D1_1_INCLUDE_DIR})

        add_custom_command (
            OUTPUT d2d1trace.cpp
            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/d2d1trace.py > ${CMAKE_CURRENT_BINARY_DIR}/d2d1trace.cpp
            DEPENDS
                d2d1trace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/specs/d2d1.py
                ${CMAKE_SOURCE_DIR}/specs/dwrite.py
                ${CMAKE_SOURCE_DIR}/specs/dcommon.py
                ${CMAKE_SOURCE_DIR}/specs/dxgi.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
        )
        add_library (d2d1trace MODULE d2d1trace.def d2d1trace.cpp)
        target_link_libraries (d2d1trace
            trace
        )
        set_target_properties (d2d1trace
            PROPERTIES PREFIX ""
        )
        install (TARGETS d2d1trace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
        install_pdb (d2d1trace DESTINATION ${WRAPPER_INSTALL_DIR})
    endif ()

    # opengl32.dll
    add_custom_command (
        OUTPUT wgltrace.cpp
        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/wgltrace.py > ${CMAKE_CURRENT_BINARY_DIR}/wgltrace.cpp
        DEPENDS
                wgltrace.py
                gltrace.py
                dlltrace.py
                trace.py
                ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
                ${CMAKE_SOURCE_DIR}/specs/wglapi.py
                ${CMAKE_SOURCE_DIR}/specs/wglenum.py
                ${CMAKE_SOURCE_DIR}/specs/glapi.py
                ${CMAKE_SOURCE_DIR}/specs/glparams.py
                ${CMAKE_SOURCE_DIR}/specs/gltypes.py
                ${CMAKE_SOURCE_DIR}/specs/winapi.py
                ${CMAKE_SOURCE_DIR}/specs/stdapi.py
    )
    add_library (wgltrace MODULE opengl32.def
        wgltrace.cpp
    )
    add_dependencies (wgltrace glproc)
    target_link_libraries (wgltrace
        gltrace_common
        glproc
        glproc_gl
    )
    set_target_properties (wgltrace PROPERTIES
        PREFIX ""
        OUTPUT_NAME opengl32
    )
    install (TARGETS wgltrace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
    install_pdb (wgltrace DESTINATION ${WRAPPER_INSTALL_DIR})

elseif (APPLE)
    # OpenGL framework
    add_custom_command (
        OUTPUT cgltrace.cpp
        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/cgltrace.py > ${CMAKE_CURRENT_BINARY_DIR}/cgltrace.cpp
        DEPENDS
            cgltrace.py
            gltrace.py
            trace.py
            ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
            ${CMAKE_SOURCE_DIR}/specs/cglapi.py
            ${CMAKE_SOURCE_DIR}/specs/glapi.py
            ${CMAKE_SOURCE_DIR}/specs/glparams.py
            ${CMAKE_SOURCE_DIR}/specs/gltypes.py
            ${CMAKE_SOURCE_DIR}/specs/stdapi.py
    )

    add_library (cgltrace SHARED
        cgltrace.cpp
    )

    add_dependencies (cgltrace glproc)

    set_target_properties (cgltrace PROPERTIES
        # OpenGL framework name
        OUTPUT_NAME "OpenGL"
        # Mac framework
        FRAMEWORK true
        # Specificy the version and reexport GLU symbols
        LINK_FLAGS "-compatibility_version 1 -current_version 1.0.0 -Wl,-reexport_library,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib"
    )

    target_link_libraries (cgltrace
        gltrace_common
        glproc_gl
        ${CMAKE_THREAD_LIBS_INIT}
        ${CMAKE_DL_LIBS}
    )

    install (TARGETS cgltrace FRAMEWORK DESTINATION ${WRAPPER_INSTALL_DIR})
elseif (X11_FOUND)
    # libGL.so
    add_custom_command (
        OUTPUT glxtrace.cpp
        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/glxtrace.py > ${CMAKE_CURRENT_BINARY_DIR}/glxtrace.cpp
        DEPENDS
            glxtrace.py
            gltrace.py
            trace.py
            ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
            ${CMAKE_SOURCE_DIR}/specs/glxapi.py
            ${CMAKE_SOURCE_DIR}/specs/glapi.py
            ${CMAKE_SOURCE_DIR}/specs/glparams.py
            ${CMAKE_SOURCE_DIR}/specs/gltypes.py
            ${CMAKE_SOURCE_DIR}/specs/stdapi.py
    )

    add_library (glxtrace SHARED
        glxtrace.cpp
        dlsym.cpp
    )

    add_dependencies (glxtrace glproc)

    set_target_properties (glxtrace PROPERTIES
        # avoid the default "lib" prefix
        PREFIX ""
    )

    target_link_libraries (glxtrace
        gltrace_common
        glproc_gl
        ${CMAKE_THREAD_LIBS_INIT}
        ${CMAKE_DL_LIBS}
    )

    target_linker_version_script (glxtrace ${CMAKE_CURRENT_SOURCE_DIR}/glxtrace.version)

    install (TARGETS glxtrace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
endif ()


if (ENABLE_EGL AND NOT WIN32 AND NOT APPLE)
    # libEGL.so/libGL.so
    add_custom_command (
        OUTPUT egltrace.cpp
        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/egltrace.py > ${CMAKE_CURRENT_BINARY_DIR}/egltrace.cpp
        DEPENDS
            egltrace.py
            gltrace.py
            trace.py
            ${CMAKE_SOURCE_DIR}/dispatch/dispatch.py
            ${CMAKE_SOURCE_DIR}/specs/eglapi.py
            ${CMAKE_SOURCE_DIR}/specs/eglenum.py
            ${CMAKE_SOURCE_DIR}/specs/glapi.py
            ${CMAKE_SOURCE_DIR}/specs/glparams.py
            ${CMAKE_SOURCE_DIR}/specs/gltypes.py
            ${CMAKE_SOURCE_DIR}/specs/stdapi.py
    )

    add_library (egltrace SHARED
        egltrace.cpp
        dlsym.cpp
    )

    add_dependencies (egltrace glproc)

    set_target_properties (egltrace PROPERTIES
        # avoid the default "lib" prefix
        PREFIX ""
    )

    target_compile_definitions (egltrace PRIVATE -DEGLTRACE=1)

    target_link_libraries (egltrace
        gltrace_common
        glproc_egl
        ${CMAKE_THREAD_LIBS_INIT}
        ${CMAKE_DL_LIBS}
    )

    target_linker_version_script (egltrace ${CMAKE_CURRENT_SOURCE_DIR}/egltrace.version)

    install (TARGETS egltrace LIBRARY DESTINATION ${WRAPPER_INSTALL_DIR})
endif ()