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cmake: update FindPNG module #475 

This pulls in a minor change from upstream cmake to support libpng
versions 1.6.  Fixes #475.
master
Mike Frysinger 2019-02-09 13:32:39 -05:00
parent e5502c7a3f
commit eaa28204bd
1 changed files with 4 additions and 1 deletions
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5
cmake/modules/FindPNG.cmake
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@ -56,7 +56,10 @@ if(ZLIB_FOUND)
/usr/local/include/libpng # OpenBSD
)
set(PNG_NAMES ${PNG_NAMES} png libpng png15 libpng15 png15d libpng15d png14 libpng14 png14d libpng14d png12 libpng12 png12d libpng12d libpng_a)
list(APPEND PNG_NAMES png libpng)
foreach(v 16 15 14 12)
list(APPEND PNG_NAMES png${v} libpng${v} png${v}d libpng${v}d)
endforeach()
find_library(PNG_LIBRARY NAMES ${PNG_NAMES} )
if (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)