[libpng15] Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF

for consistency, and remove some useless tests (Alexey Petruchik).

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.22rc02 - March 9, 2015
+Libpng 1.5.22rc03 - March 12, 2015
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,21 +9,21 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.22rc02.tar.xz (LZMA-compressed, recommended)
+   1.5.22rc03.tar.xz (LZMA-compressed, recommended)
-   1.5.22rc02.tar.gz
+   1.5.22rc03.tar.gz
-   1.5.22rc02.tar.bz2
+   1.5.22rc03.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1522r02.7z  (LZMA-compressed, recommended)
+   lp1522r03.7z  (LZMA-compressed, recommended)
-   lp1522r02.zip
+   lp1522r03.zip
 
 Other information:
 
-   1.5.22rc02-README.txt
+   1.5.22rc03-README.txt
-   1.5.22rc02-LICENSE.txt
+   1.5.22rc03-LICENSE.txt
-   libpng-1.5.22rc02-*.asc (armored detached GPG signatures)
+   libpng-1.5.22rc03-*.asc (armored detached GPG signatures)
 
 Changes since the last public release (1.5.21):
 
@@ -52,11 +52,15 @@ Version 1.5.22beta04 [February 25, 2015]
 Version 1.5.22rc01 [March 4, 2015]
   No changes.
 
-Version 1.5.22rc02 [March 9, 2015]
+Version 1.5.22rc02 [March 9, 2014]
   Removed some comments that the configure script did not handle
     properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt.
   Merged png_free_data() with libpng-1.6.17
 
+Version 1.5.22rc03 [March 12, 2015]
+  Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
+    for consistency, and remove some useless tests (Alexey Petruchik).
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

CHANGES

@@ -4316,11 +4316,15 @@ Version 1.5.22beta04 [February 25, 2015]
 Version 1.5.22rc01 [March 4, 2015]
   No changes.
 
-Version 1.5.22rc02 [March 9, 2015]
+Version 1.5.22rc02 [March 9, 2014]
   Removed some comments that the configure script did not handle
     properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt.
   Merged png_free_data() with libpng-1.6.17
 
+Version 1.5.22rc03 [March 12, 2015]
+  Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
+    for consistency, and remove some useless tests (Alexey Petruchik).
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

CMakeLists.txt

@@ -1,6 +1,6 @@
 # CMakeLists.txt
 
-# Copyright (C) 2007-2014 Glenn Randers-Pehrson
+# Copyright (C) 2007-2015 Glenn Randers-Pehrson
 
 # This code is released under the libpng license.
 # For conditions of distribution and use, see the disclaimer
@@ -30,8 +30,7 @@ if(NOT WIN32)
     PATHS /usr/lib /usr/local/lib
   )
   if(NOT M_LIBRARY)
-    message(STATUS
+    message(STATUS "math lib 'libm' not found; floating point support disabled")
-      "math library 'libm' not found - floating point support disabled")
   endif()
 else()
   # not needed on windows
@@ -39,22 +38,14 @@ else()
 endif()
 
 # COMMAND LINE OPTIONS
-if(DEFINED PNG_SHARED)
+option(PNG_SHARED "Build shared lib" ON)
-  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
+option(PNG_STATIC "Build static lib" ON)
-else()
+option(PNG_TESTS  "Build libpng tests" ON)
-  option(PNG_SHARED "Build shared lib" ON)
-endif()
-if(DEFINED PNG_STATIC)
-  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
-else()
-  option(PNG_STATIC "Build static lib" ON)
-endif()
-
-option(PNG_TESTS  "Build libpng tests" YES)
 
 # Many more configuration options could be added here
-option(PNG_DEBUG         "Build with debug output" NO)
+option(PNG_FRAMEWORK "Build OS X framework" OFF)
-option(PNGARG            "Disable ANSI-C prototypes" NO)
+option(PNG_DEBUG     "Build with debug output" OFF)
+option(PNGARG        "Disable ANSI-C prototypes" OFF)
 
 # SET LIBNAME
 set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
@@ -106,8 +97,6 @@ set(pngvalid_sources
 )
 # SOME NEEDED DEFINITIONS
 
-add_definitions(-DPNG_CONFIGURE_LIBPNG)
-
 if(MSVC)
   add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
 endif(MSVC)
@@ -133,7 +122,7 @@ if(PNG_SHARED)
 endif()
 
 if(PNG_STATIC)
-# does not work without changing name
+  # does not work without changing name
   set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
   add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
   list(APPEND PNG_LIB_TARGETS ${PNG_LIB_NAME_STATIC})
@@ -144,10 +133,27 @@ if(PNG_STATIC)
   target_link_libraries(${PNG_LIB_NAME_STATIC} ${ZLIB_LIBRARY} ${M_LIBRARY})
 endif()
 
+if(PNG_FRAMEWORK)
+  set(PNG_LIB_NAME_FRAMEWORK ${PNG_LIB_NAME}_framework)
+  add_library(${PNG_LIB_NAME_FRAMEWORK} SHARED ${libpng_sources})
+  list(APPEND PNG_LIB_TARGETS ${PNG_LIB_NAME_FRAMEWORK})
+  set_target_properties(${PNG_LIB_NAME_FRAMEWORK} PROPERTIES
+    FRAMEWORK TRUE
+    FRAMEWORK_VERSION ${PNGLIB_VERSION}
+    MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${PNGLIB_MAJOR}.${PNGLIB_MINOR}
+    MACOSX_FRAMEWORK_BUNDLE_VERSION ${PNGLIB_VERSION}
+    MACOSX_FRAMEWORK_IDENTIFIER org.libpng.libpng
+    XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
+    PUBLIC_HEADER "${libpng_public_hdrs}"
+    OUTPUT_NAME png)
+  target_link_libraries(${PNG_LIB_NAME_FRAMEWORK} ${ZLIB_LIBRARY} ${M_LIBRARY})
+endif()
+
 if(NOT PNG_LIB_TARGETS)
   message(SEND_ERROR
     "No library variant selected to build. "
-    "Please enable at least one of the following options: PNG_STATIC, PNG_SHARED")
+    "Please enable at least one of the following options: "
+    " PNG_STATIC, PNG_SHARED, PNG_FRAMEWORK")
 endif()
 
 if(PNG_SHARED AND WIN32)
@@ -187,7 +193,6 @@ macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
     get_filename_component(LINK_TARGET "${SRC_FILE}" NAME)
     execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
     execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-    execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
   endif(WIN32 AND NOT CYGWIN AND NOT MSYS)
 endmacro()
@@ -219,7 +224,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.22rc02
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.22rc03
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)
@@ -250,7 +255,8 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
       ${PNG_EXPORT_RULE}
       RUNTIME DESTINATION bin
       LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+      FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
   if(PNG_SHARED)
     # Create a symlink for libpng.dll.a => libpng15.dll.a on Cygwin