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- Log -----------------------------------------------------------------
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=a50d29c3e955b9409c4a1c260d869036f37b9e4d
commit a50d29c3e955b9409c4a1c260d869036f37b9e4d
Merge: 5338178 0051506
Author:     Rolf Eike Beer <e...@sf-mail.de>
AuthorDate: Wed Jan 25 12:29:13 2012 -0500
Commit:     CMake Topic Stage <kwro...@kitware.com>
CommitDate: Wed Jan 25 12:29:13 2012 -0500

    Merge topic 'improve-findpng' into next
    
    0051506 FindPNG: support version selection


http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=0051506aa4ea3e1fdbe5333b529a0a5af9476be5
commit 0051506aa4ea3e1fdbe5333b529a0a5af9476be5
Author:     Rolf Eike Beer <e...@sf-mail.de>
AuthorDate: Wed Jan 25 18:24:44 2012 +0100
Commit:     Rolf Eike Beer <e...@sf-mail.de>
CommitDate: Wed Jan 25 18:24:57 2012 +0100

    FindPNG: support version selection

diff --git a/Modules/FindPNG.cmake b/Modules/FindPNG.cmake
index f616973..a6c181c 100644
--- a/Modules/FindPNG.cmake
+++ b/Modules/FindPNG.cmake
@@ -7,6 +7,7 @@
 #  PNG_LIBRARIES, the libraries to link against to use PNG.
 #  PNG_DEFINITIONS - You should add_definitons(${PNG_DEFINITIONS}) before 
compiling code that includes png library files.
 #  PNG_FOUND, If false, do not try to use PNG.
+#  PNG_VERSION_STRING - the version of the PNG library found (since CMake 
2.8.8)
 # Also defined, but not for general use are
 #  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.
@@ -56,11 +57,19 @@ if(ZLIB_FOUND)
 
   endif (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)
 
+  if (PNG_PNG_INCLUDE_DIR AND EXISTS "${PNG_PNG_INCLUDE_DIR}/png.h")
+      file(STRINGS "${PNG_PNG_INCLUDE_DIR}/png.h" png_version_str REGEX 
"^#define[ \t]+PNG_LIBPNG_VER_STRING[ \t]+\".+\"")
+
+      string(REGEX REPLACE "^#define[ \t]+PNG_LIBPNG_VER_STRING[ 
\t]+\"([^\"]+)\".*" "\\1" PNG_VERSION_STRING "${png_version_str}")
+      unset(png_version_str)
+  endif (PNG_PNG_INCLUDE_DIR AND EXISTS "${PNG_PNG_INCLUDE_DIR}/png.h")
 endif(ZLIB_FOUND)
 
 # handle the QUIETLY and REQUIRED arguments and set PNG_FOUND to TRUE if
 # all listed variables are TRUE
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
-find_package_handle_standard_args(PNG  DEFAULT_MSG  PNG_LIBRARY 
PNG_PNG_INCLUDE_DIR)
+find_package_handle_standard_args(PNG
+                                  REQUIRED_VARS PNG_LIBRARY PNG_PNG_INCLUDE_DIR
+                                  VERSION_VAR PNG_VERSION_STRING)
 
 mark_as_advanced(PNG_PNG_INCLUDE_DIR PNG_LIBRARY )

-----------------------------------------------------------------------

Summary of changes:
 Modules/FindPNG.cmake |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)


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