[png-mng-implement] Win7/MSYS configure problems with libpng-1.4.1

[Glenn Randers-P. <gl...@gm...>]

>From the libpng bug tracker at SourceForge:


I've built libpng 1.4.1 yesterday from this link:
http://prdownloads.sourceforge.net/libpng/libpng-1.4.1.tar.xz?download

I'm running Windows 7 in a MSYS shell. I'm using the most recent MSYS
and MinGW available from download. Got also the most recent needed
tools over there: make, sed, awk and something else, I cannot remember
this fully.

Problem is, when I run the ./configure script, everything seems ok, I
can build the static library, dll and the import library, everything
installs just fine, but the import ilbrary is missing *all* useful
definitions for the dll. I was trying to build SDL_image but it always
stopped building with a lot of "undefined reference" errors. Linking
with the static library is ok, but here's the output of "nm
libpng14.dll.a": (configured with just "/.configure --prefix=/mingw")


d000001.o:
00000000 i .idata$4
00000000 i .idata$5
00000000 i .idata$7
00000000 I _libpng14_14_dll_iname

d000000.o:
00000000 i .idata$2
00000000 i .idata$4
00000000 i .idata$5
00000000 I __head_libpng14_14_dll
U _libpng14_14_dll_iname


And that's all. When I run "nm libpng14-14.dll" everything is there
indeed, but the impot library misses all. When I use the
scripts/makefile.mingw makefile, I get the correct import library.