I realized that there is something wrong extracting the package libpng-1.5.4-ppc.
Opening the package with 7zip I can see a png.h = 0KB in portlibsppcinclude
Replacing it with the one in portlibsppcincludelibpng15 solved the problem.
Now I also notice:
libpng.a = 0 KB
libpng.la = 0 KB
and I have a different error when executing the make file (devkitPro/portlibs/ppc/liblibpng.a: file not recognized: File truncated)
Why I’m getting these files empty ? I just have to change zip utility or it is a problem in the package itself ? Using iZarc I have the same problem…
Thanks !!