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make libpng only selectable when using png

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This commit is contained in:
Robert Hauck 2015-02-11 14:02:55 +01:00
parent 0464e8e5d7
commit 0fa61b0c95
1 changed files with 10 additions and 8 deletions
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18
CMakeLists.txt
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@ -15,18 +15,20 @@ endif()
option(NANA_ENABLE_PNG "Enable the use of PNG" ON)
if(NANA_ENABLE_PNG)
add_definitions(-DNANA_ENABLE_PNG)
endif()
option(NANA_LIBPNG "Use the included libpng" ON)
if(NANA_LIBPNG)
add_definitions(-DNANA_LIBPNG)
else()
find_package(PNG)
if (PNG_FOUND)
include_directories( ${PNG_INCLUDE_DIRS})
option(NANA_LIBPNG "Use the included libpng" ON)
if(NANA_LIBPNG)
add_definitions(-DNANA_LIBPNG)
else()
find_package(PNG)
if (PNG_FOUND)
include_directories( ${PNG_INCLUDE_DIRS})
endif()
endif()
endif()
#copy our new config.hpp (with removed PNG defines)
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_SOURCE_DIR}/build/cmake/config.hpp ${CMAKE_SOURCE_DIR}/include/nana/)