externals: allow user to use system lodepng (#7138)

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Castor215 2023-11-08 23:39:24 +00:00 committed by GitHub
parent ee372572a6
commit fcc0fd671a
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3 changed files with 41 additions and 1 deletions

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