libpng.3.1.2.5.dylib installed with wrong "install_name"

[hideishi@…]

libpng.3.1.2.5.dylib is compiled with wrong "install_name" such as " -install_name $destroot/$prefix/lib/libpng.3.dylib".

This is because libpng.3.dylib is compiled at "destroot" stage, where libpng12.0.dylib is compiled at "build" stage hence correct install_name.

At "destroot" stage, $destroot is added to the prefix of install path, so the "install_name" has $destroot as well.

Proposed fix:

1. change the makefile so that libpng.3.dylib is compiled at "build" stage.
2. use the following patch which forces the "install_name" to

$prefix/lib/libpng.3.dylib

--- scripts/makefile.darwin~ Thu Oct 3 20:32:34 2002 +++ scripts/makefile.darwin Fri Oct 10 16:22:47 2003 @@ -85,14 +85,14 @@

$(LIBNAME).$(PNGVER).dylib: $(OBJSDLL)

$(CC) -dynamiclib \

• -install_name $(DL)/$(LIBNAME).$(PNGMAJ).dylib \

+ -install_name $(LIBPATH)/$(LIBNAME).$(PNGMAJ).dylib \

-flat_namespace -undefined suppress \ -o $(LIBNAME).$(PNGVER).dylib \ $(OBJSDLL)

libpng.3.$(PNGMIN).dylib: $(OBJSDLL)

$(CC) -dynamiclib \

• -install_name $(DL)/libpng.3.dylib \

+ -install_name $(LIBPATH)/libpng.3.dylib \

-current_version 3 -compatibility_version 3 \ -flat_namespace -undefined suppress \ -o libpng.3.$(PNGMIN).dylib \