diff options
Diffstat (limited to 'Modules/FindPNG.cmake')
-rw-r--r-- | Modules/FindPNG.cmake | 50 |
1 files changed, 43 insertions, 7 deletions
diff --git a/Modules/FindPNG.cmake b/Modules/FindPNG.cmake index 7cf3f22..cae41ac 100644 --- a/Modules/FindPNG.cmake +++ b/Modules/FindPNG.cmake @@ -2,13 +2,20 @@ # FindPNG # ------- # -# Find the native PNG includes and library +# Find libpng, the official reference library for the PNG image format. # +# Imported targets +# ^^^^^^^^^^^^^^^^ # +# This module defines the following :prop_tgt:`IMPORTED` target: # -# This module searches libpng, the library for working with PNG images. +# ``PNG::PNG`` +# The libpng library, if found. # -# It defines the following variables +# Result variables +# ^^^^^^^^^^^^^^^^ +# +# This module will set the following variables in your project: # # ``PNG_INCLUDE_DIRS`` # where to find png.h, etc. @@ -22,19 +29,22 @@ # ``PNG_VERSION_STRING`` # the version of the PNG library found (since CMake 2.8.8) # -# Also defined, but not for general use are +# Obsolete variables +# ^^^^^^^^^^^^^^^^^^ +# +# The following variables may also be set, for backwards compatibility: # # ``PNG_LIBRARY`` # where to find the PNG library. -# -# For backward compatiblity the variable PNG_INCLUDE_DIR is also set. -# It has the same value as PNG_INCLUDE_DIRS. +# ``PNG_INCLUDE_DIR`` +# where to find the PNG headers (same as PNG_INCLUDE_DIRS) # # Since PNG depends on the ZLib compression library, none of the above # will be defined unless ZLib can be found. #============================================================================= # Copyright 2002-2009 Kitware, Inc. +# Copyright 2016 Raumfeld # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. @@ -105,6 +115,32 @@ if(ZLIB_FOUND) endif() endif () + if(NOT TARGET PNG::PNG) + add_library(PNG::PNG UNKNOWN IMPORTED) + set_target_properties(PNG::PNG PROPERTIES + INTERFACE_COMPILE_DEFINITIONS "${PNG_DEFINITIONS}" + INTERFACE_INCLUDE_DIRECTORIES "${PNG_INCLUDE_DIRS}" + INTERFACE_LINK_LIBRARIES ZLIB::ZLIB) + if(EXISTS "${PNG_LIBRARY}") + set_target_properties(PNG::PNG PROPERTIES + IMPORTED_LINK_INTERFACE_LANGUAGES "C" + IMPORTED_LOCATION "${PNG_LIBRARY}") + endif() + if(EXISTS "${PNG_LIBRARY_DEBUG}") + set_property(TARGET PNG::PNG APPEND PROPERTY + IMPORTED_CONFIGURATIONS DEBUG) + set_target_properties(PNG::PNG PROPERTIES + IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C" + IMPORTED_LOCATION_DEBUG "${PNG_LIBRARY_DEBUG}") + endif() + if(EXISTS "${PNG_LIBRARY_RELEASE}") + set_property(TARGET PNG::PNG APPEND PROPERTY + IMPORTED_CONFIGURATIONS RELEASE) + set_target_properties(PNG::PNG PROPERTIES + IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C" + IMPORTED_LOCATION_RELEASE "${PNG_LIBRARY_RELEASE}") + endif() + endif() endif () if (PNG_PNG_INCLUDE_DIR AND EXISTS "${PNG_PNG_INCLUDE_DIR}/png.h") |