externals: allow user to use system lodepng (#7138)
parent
ee372572a6
commit
fcc0fd671a
@ -0,0 +1,31 @@
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if(NOT LODEPNG_FOUND)
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find_path(LODEPNG_INCLUDE_DIRS NAMES lodepng.h
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PATHS
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/usr/include
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/usr/local/include
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)
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find_library(LODEPNG_LIBRARY_DIRS NAMES lodepng
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PATHS
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/usr/lib
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/usr/local/lib
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)
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if(LODEPNG_INCLUDE_DIRS AND LODEPNG_LIBRARY_DIRS)
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set(LODEPNG_FOUND TRUE CACHE INTERNAL "Found lodepng")
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message(STATUS "Found lodepng: ${LODEPNG_LIBRARY_DIRS}, ${LODEPNG_INCLUDE_DIRS}")
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else()
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set(LODEPNG_FOUND FALSE CACHE INTERNAL "Found lodepng")
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message(STATUS "Lodepng not found.")
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endif()
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endif()
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if(LODEPNG_FOUND AND NOT TARGET lodepng::lodepng)
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add_library(lodepng::lodepng UNKNOWN IMPORTED)
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set_target_properties(lodepng::lodepng PROPERTIES
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INCLUDE_DIRECTORIES ${LODEPNG_INCLUDE_DIRS}
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INTERFACE_LINK_LIBRARIES ${LODEPNG_LIBRARY_DIRS}
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IMPORTED_LOCATION ${LODEPNG_LIBRARY_DIRS}
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)
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endif()
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