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include (ExternalProject)
set(jpeg_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/external/jpeg_archive)
set(jpeg_URL http://www.ijg.org/files/jpegsrc.v9a.tar.gz)
set(jpeg_HASH SHA256=3a753ea48d917945dd54a2d97de388aa06ca2eb1066cbfdc6652036349fe05a7)
set(jpeg_BUILD ${CMAKE_BINARY_DIR}/jpeg/src/jpeg)
set(jpeg_INSTALL ${CMAKE_BINARY_DIR}/jpeg/install)
set(jpeg_STATIC_LIBRARIES ${jpeg_INSTALL}/lib/libjpeg.a)
set(jpeg_HEADERS
"${jpeg_INSTALL}/include/jconfig.h"
"${jpeg_INSTALL}/include/jerror.h"
"${jpeg_INSTALL}/include/jmorecfg.h"
"${jpeg_INSTALL}/include/jpeglib.h"
"${jpeg_BUILD}/cderror.h"
"${jpeg_BUILD}/cdjpeg.h"
"${jpeg_BUILD}/jdct.h"
"${jpeg_BUILD}/jinclude.h"
"${jpeg_BUILD}/jmemsys.h"
"${jpeg_BUILD}/jpegint.h"
"${jpeg_BUILD}/jversion.h"
"${jpeg_BUILD}/transupp.h"
)
if (WIN32)
ExternalProject_Add(jpeg
PREFIX jpeg
URL ${jpeg_URL}
URL_HASH ${jpeg_HASH}
PATCH_COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/patches/jpeg/CMakeLists.txt ${jpeg_BUILD}
INSTALL_DIR ${jpeg_INSTALL}
DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
CMAKE_CACHE_ARGS
-DCMAKE_BUILD_TYPE:STRING=Release
-DCMAKE_VERBOSE_MAKEFILE:BOOL=OFF
-DCMAKE_INSTALL_PREFIX:STRING=${jpeg_INSTALL}
)
ExternalProject_Add_Step(jpeg copy_jconfig
COMMAND ${CMAKE_COMMAND} -E copy
${jpeg_BUILD}/jconfig.vc ${jpeg_BUILD}/jconfig.h
DEPENDEES patch
DEPENDERS build
)
else()
ExternalProject_Add(jpeg
PREFIX jpeg
URL ${jpeg_URL}
URL_HASH ${jpeg_HASH}
INSTALL_DIR ${jpeg_INSTALL}
DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
BUILD_COMMAND $(MAKE)
INSTALL_COMMAND $(MAKE) install
CONFIGURE_COMMAND
${jpeg_BUILD}/configure
--prefix=${jpeg_INSTALL}
--enable-shared=yes
CFLAGS=-fPIC
)
endif()
# put jpeg includes in the directory where they are expected
add_custom_target(jpeg_create_destination_dir
COMMAND ${CMAKE_COMMAND} -E make_directory ${jpeg_INCLUDE_DIR}/jpeg-9a
DEPENDS jpeg)
add_custom_target(jpeg_copy_headers_to_destination
DEPENDS jpeg_create_destination_dir)
foreach(header_file ${jpeg_HEADERS})
add_custom_command(TARGET jpeg_copy_headers_to_destination PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy ${header_file} ${jpeg_INCLUDE_DIR}/jpeg-9a)
endforeach()
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