Remove support for the MNG file format and the bundled libmng

The MNG file format is generally abandoned, and libmng has been
unmaintained for several years.

The MNG plugin and bundled libmng has been moved to the
qtimageformats project on Gerrit.

Task-number: QTBUG-21869
Change-Id: I946432347014ffde2b72307a5f8b166ca5553602
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 0 insertions, 104 deletions

diff --git a/src/3rdparty/libmng/README.config b/src/3rdparty/libmng/README.config
deleted file mode 100644
index d5cd4541d0..0000000000
--- a/src/3rdparty/libmng/README.config
+++ /dev/null
@@ -1,104 +0,0 @@
-Configuration options in libmng
-===============================
-
-The library is fairly configurable through the use of a number of defines.
-Please note however that certain defines are for internal use only.
-The following list gives a summary of options that can be used externally to
-define the functionality of the library:
-
-========================================
-
-#define MNG_BUILD_DLL
-
-This is used to indicate that a "standard" DLL should result from compiling
-the library. Please note the remarks in README.dll if you intend to work
-with the library as a DLL. The purpose of this option is to ensure that
-DLL builds have the same set of functions.
-
-#define MNG_BUILD_SO
-
-This is used to indicate that a "standard" shared library (SO) should result
-from a compilation. The purpose of this option is to ensure that all
-shared libraries generated this way will have the same set of functions.
-
-#define MNG_USE_DLL / #define MNG_USE_SO
-
-These should be used when including the library header in the compilation
-of an application to indicate that the compiler/linker must take the
-necessary steps to make the binary executable to use the standard DLL
-or shared library (SO).
-
-#define MNG_SKIP_ZLIB / #define MNG_SKIP_LCMS / #define MNG_SKIP_IJG6B
-
-Use these in conjunction with MNG_USE_DLL / MNG_USE_SO. This is useful if
-you only need the external definitions of the MNG library and not the others,
-which will speed up the compilation process.
-
-#define MNG_SUPPORT_FULL / #define MNG_SUPPORT_LC / #define MNG_SUPPORT_VLC
-
-These can be used to indicate the level of MNG spec compliance required.
-Currently only full MNG compliance is supported.
-
-#define MNG_SUPPORT_IJG6B
-
-This can be used to indicate if JNG support is required. This option will
-include the IJG JPEG-library. Note that MNG_SUPPORT_FULL will automatically
-set this option. Use this only if you need JNG support with MNG-(V)LC.
-
-#define MNG_FULL_CMS / #define MNG_GAMMA_ONLY / #define MNG_NO_CMS /
-#define MNG_APP_CMS
-
-These indicate the color-correction support level of the library.
-If you are on a platform that supports lcms (Little CMS by Marti Maria Saguar)
-then it is highly recommended to define MNG_FULL_CMS.
-If your platform has it's own CMS then select MNG_APP_CMS and be sure to
-include the appropriate callbacks in your app.
-In all other cases it is recommended to define MNG_GAMMA_ONLY.
-
-#define MNG_SUPPORT_READ / #define MNG_SUPPORT_WRITE /
-#define MNG_SUPPORT_DISPLAY
-
-These indicate the high-level support for reading, writing and/or
-displaying files. Note that in order to display a file, you'll need to read
-it first. (yes, really!)
-
-#define MNG_STORE_CHUNKS
-
-This indicates that the library should store chunk-information when reading
-a file. This information can then be processed through the
-MNG_ITERATE_CHUNKS() function. Note that you must specify this option if
-you want to create and write a new file.
-
-#define MNG_ACCESS_CHUNKS
-
-This is used to indicate that the app may need access to internally stored
-chunk information. MNG_STORE_CHUNKS must be defined as well for this option
-to function properly.
-
-#define MNG_INTERNAL_MEMMNGMT
-
-You can use this to have the library handle it's own memory allocation and
-deallocation through the "standard" memory functions. This option is turned
-off by default, which means your app must define the memory callbacks.
-
-#define MNG_ERROR_TELLTALE
-
-Set this on to allow human-readable error-messages to be included in the
-library and the error function and callback.
-
-#define MNG_BIGENDIAN_SUPPORTED
-
-This option should be used to indicate the hardware is based on big endian
-integers.
-
-#define MNG_SUPPORT_TRACE / #define MNG_TRACE_TELLTALE
-
-These two can be used when debugging an app. You'll need to have the trace
-callback setup also. This allows for a rather thorough investigation of the
-libraries function paths.
-
-========================================
-
-Any other optional defines you may encounter are for internal use only.
-please do not specify them externally. In case of doubt, consult the
-support email lists. More info can be found on http://www.libmng.com