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Bug 401

Summary: Add MNG support (there is something called SDL_mng)
Product: SDL_image Reporter: esigra
Component: miscAssignee: Sam Lantinga <slouken>
Status: RESOLVED WONTFIX QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: dulsi
Version: unspecified   
Hardware: All   
OS: Linux   
URL: http://cryptology.org/research/SDL MNG Library/

Description esigra 2007-02-28 04:48:02 UTC 
Add MNG support to SDL_image. At [http://cryptology.org/research/SDL MNG Library/] there is SDL_mng-0.1.tar.bz2. I have tested it with the following result:
SDL_mng-0.1> ./autogen.sh
Generating aclocal.m4
/usr/share/aclocal/sdlmm.m4:12: warning: underquoted definition of AM_PATH_SDLMM
/usr/share/aclocal/sdlmm.m4:12:   run info '(automake)Extending aclocal'
/usr/share/aclocal/sdlmm.m4:12:   or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
Generating Makefile.in
configure.ac:6: installing `./config.sub'
configure.ac:10: installing `./missing'
configure.ac:10: installing `./install-sh'
configure.ac:6: installing `./config.guess'
Makefile.am: installing `./depcomp'
configure.ac:14: required file `./ltmain.sh' not found
Generating configure file



I worked around the problem:
SDL_mng-0.1> ln -s /usr/share/libtool/ltmain.sh .
SDL_mng-0.1> ./autogen.sh
Generating aclocal.m4
/usr/share/aclocal/sdlmm.m4:12: warning: underquoted definition of AM_PATH_SDLMM
/usr/share/aclocal/sdlmm.m4:12:   run info '(automake)Extending aclocal'
/usr/share/aclocal/sdlmm.m4:12:   or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
Generating Makefile.in
Generating configure file


Then configure works. But make ends with:
/bin/sh ./libtool --tag=CC   --mode=link gcc  -g -O2 -DLOAD_PNG -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT   -o libSDL_mng.la -rpath /usr/local/lib SDL_mng.lo @IMG_LIBS@ -lpng -lz -lSDL -lpthread
gcc -shared  .libs/SDL_mng.o  /usr/lib/libpng12.so -lz /usr/lib/libSDL.so -L/usr/lib -lpthread  @IMG_LIBS@ -Wl,-soname -Wl,libSDL_mng.so.0 -o .libs/libSDL_mng.so.0.0.0
gcc: @IMG_LIBS@: No such file or directory
make: *** [libSDL_mng.la] Fel 1


I commented out the line "libSDL_mng_la_LIBADD = @IMG_LIBS@" in Makefile.am and did "./autogen.sh;configure;make" again. Then I could run ./mngtest and see the dancing panda.
Comment 1 Dennis Payne 2007-03-05 19:12:48 UTC 
I was just looking at SDL_mng and I'm probably going use it.  But I don't think it is a good idea to integrate as is.  I'd prefer to see an interface more like SDL_anim (http://tamale.net/SDL_anim/).  That interface isn't entirely to my liking either.
Comment 2 Sam Lantinga 2007-07-12 20:17:09 UTC 
Yes, SDL_image is really meant for single images, not animation or image sets.