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find_program(MESON meson REQUIRED)
find_program(NINJA ninja REQUIRED)
set(CAIRO_BUILD_DIR ${CMAKE_BINARY_DIR}/cairo/build)
set(CAIRO_INSTALL_DIR ${CMAKE_BINARY_DIR}/cairo/install)
set(CAIRO_MESON_SETUP meson setup ${CAIRO_BUILD_DIR} --prefix=${CAIRO_INSTALL_DIR})
if(EMSCRIPTEN)
cmake_path(GET CMAKE_C_COMPILER PARENT_PATH EMSCRIPTEN_TOOLCHAIN)
set(EMSCRIPTEN_CROSS_FILE_TEMPLATE ${PROJECT_SOURCE_DIR}/scripts/meson-emscripten.ini.in)
set(EMSCRIPTEN_CROSS_FILE ${CAIRO_BUILD_DIR}/emscripten.ini)
configure_file(${EMSCRIPTEN_CROSS_FILE_TEMPLATE} ${EMSCRIPTEN_CROSS_FILE})
set(CAIRO_MESON_SETUP ${CAIRO_MESON_SETUP} --cross-file ${EMSCRIPTEN_CROSS_FILE})
endif()
add_custom_target(
cairo-build
COMMAND mkdir -p ${CAIRO_BUILD_DIR} ${CAIRO_INSTALL_DIR}
COMMAND ${CAIRO_MESON_SETUP}
COMMAND ninja -C ${CAIRO_BUILD_DIR}
COMMAND ninja -C ${CAIRO_BUILD_DIR} install
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/lib/cairo
)
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