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# Common Ambient Variables:
#   VCPKG_ROOT_DIR = <C:\path\to\current\vcpkg>
#   TARGET_TRIPLET is the current triplet (x86-windows, etc)
#   PORT is the current port name (zlib, etc)
#   CURRENT_BUILDTREES_DIR = ${VCPKG_ROOT_DIR}\buildtrees\${PORT}
#   CURRENT_PACKAGES_DIR  = ${VCPKG_ROOT_DIR}\packages\${PORT}_${TARGET_TRIPLET}

include(vcpkg_common_functions)
set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/dlib-19.4)
vcpkg_download_distfile(ARCHIVE
    URLS "http://dlib.net/files/dlib-19.4.tar.bz2"
    FILENAME "dlib-19.4.tar.bz2"
    SHA512 c5ae22c507b57a13d880d79e9671730829114d0276508b0a41b373d3abae9057d960fce84fafe1be468d943910853baaa70c88f2516e20a0c41f3895bf217f7b
)
vcpkg_extract_source_archive(${ARCHIVE})
file(REMOVE_RECURSE ${SOURCE_PATH}/dlib/external/libjpeg)
file(REMOVE_RECURSE ${SOURCE_PATH}/dlib/external/libpng)
file(REMOVE_RECURSE ${SOURCE_PATH}/dlib/external/zlib)

# This fixes static builds; dlib doesn't pull in the needed transitive dependencies
file(READ "${SOURCE_PATH}/dlib/CMakeLists.txt" DLIB_CMAKE)
string(REPLACE "PNG_LIBRARY" "PNG_LIBRARIES" DLIB_CMAKE "${DLIB_CMAKE}")
file(WRITE "${SOURCE_PATH}/dlib/CMakeLists.txt" "${DLIB_CMAKE}")

vcpkg_configure_cmake(
    SOURCE_PATH ${SOURCE_PATH}
    PREFER_NINJA 
    OPTIONS
        -DDLIB_LINK_WITH_SQLITE3=ON
        -DDLIB_USE_FFTW=ON
        -DDLIB_PNG_SUPPORT=ON
        -DDLIB_JPEG_SUPPORT=ON
        -DDLIB_USE_BLAS=OFF
        -DDLIB_USE_LAPACK=OFF
        -DDLIB_USE_CUDA=OFF
        -DDLIB_GIF_SUPPORT=OFF
        -DDLIB_USE_MKL_FFT=OFF
        #-DDLIB_USE_CUDA=ON
    OPTIONS_DEBUG
        -DDLIB_ENABLE_ASSERTS=ON
        #-DDLIB_ENABLE_STACK_TRACE=ON
)

vcpkg_install_cmake()

vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake)

# There is no way to suppress installation of the headers and resource files in debug build.
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/share)

# Remove other files not required in package
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/dlib/all)
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/dlib/test)
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/dlib/travis) 
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/dlib/cmake_utils)
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/include/dlib/external/libpng/arm)

# Dlib encodes debug/release in its config.h. Patch it to respond to the NDEBUG macro instead.
file(READ ${CURRENT_PACKAGES_DIR}/include/dlib/config.h _contents)
string(REPLACE "/* #undef ENABLE_ASSERTS */" "#if !defined(NDEBUG)\n#define ENABLE_ASSERTS\n#endif" _contents ${_contents})
string(REPLACE "#define DLIB_DISABLE_ASSERTS" "#if defined(NDEBUG)\n#define DLIB_DISABLE_ASSERTS\n#endif" _contents ${_contents})
file(WRITE ${CURRENT_PACKAGES_DIR}/include/dlib/config.h ${_contents})

# Handle copyright
file(COPY ${CURRENT_PACKAGES_DIR}/share/doc/dlib/LICENSE.txt DESTINATION ${CURRENT_PACKAGES_DIR}/share/dlib)
file(RENAME ${CURRENT_PACKAGES_DIR}/share/dlib/LICENSE.txt ${CURRENT_PACKAGES_DIR}/share/dlib/COPYRIGHT)
file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/share/doc)