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include (ExternalProject)
set(gif_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/external/gif_archive)
set(gif_URL http://ufpr.dl.sourceforge.net/project/giflib/giflib-5.1.4.tar.gz)
set(gif_HASH SHA256=34a7377ba834397db019e8eb122e551a49c98f49df75ec3fcc92b9a794a4f6d1)
set(gif_INSTALL ${CMAKE_BINARY_DIR}/gif/install)
set(gif_STATIC_LIBRARIES ${gif_INSTALL}/lib/libgif.a)
set(gif_HEADERS
"${gif_INSTALL}/include/gif_lib.h"
)
set(ENV{CFLAGS} "$ENV{CFLAGS} -fPIC")
ExternalProject_Add(gif
PREFIX gif
URL ${gif_URL}
URL_HASH ${gif_HASH}
INSTALL_DIR ${gif_INSTALL}
DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
BUILD_COMMAND $(MAKE)
INSTALL_COMMAND $(MAKE) install
CONFIGURE_COMMAND
${CMAKE_CURRENT_BINARY_DIR}/gif/src/gif/configure
--with-pic
--prefix=${gif_INSTALL}
--enable-shared=yes
)
# put gif includes in the directory where they are expected
add_custom_target(gif_create_destination_dir
COMMAND ${CMAKE_COMMAND} -E make_directory ${gif_INCLUDE_DIR}/giflib-5.1.4/lib
DEPENDS gif)
add_custom_target(gif_copy_headers_to_destination
DEPENDS gif_create_destination_dir)
foreach(header_file ${gif_HEADERS})
add_custom_command(TARGET gif_copy_headers_to_destination PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy ${header_file} ${gif_INCLUDE_DIR}/giflib-5.1.4/lib/)
endforeach()
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