Problem compiling XEmacs 21.5 (beta29) with latest libpng (1.5)

I have hit a problem compiling XEmacs 21.5 (beta29) with the latest version of macosforge (apple) XQuartz X11. I also sent this mail to the apple X11 users' list. The problem is that the latest libpng APIU has changed, and I assume others will see this too. Here is the error I see: gcc-4.2 -c -Wall -Wno-switch -Wundef -Wsign-compare -Wno-char-subscripts -Wpacked -Wpointer-arith -Wshadow -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wdeclaration-after-statement -Wunused-parameter -g -O3 -fno-strict-aliasing -arch i386 -I/opt/local/include -Demacs -I. -I/Users/royar/src/xemacs-hg/src -DHAVE_CONFIG_H -I/opt/X11/include -I/opt/X11/include/freetype2 -I/opt/local/include -I/opt/X11/include glyphs-eimage.c glyphs-eimage.c: In function 'png_instantiate': glyphs-eimage.c:985: error: dereferencing pointer to incomplete type glyphs-eimage.c:986: error: dereferencing pointer to incomplete type glyphs-eimage.c:1048: error: dereferencing pointer to incomplete type glyphs-eimage.c:1051: error: dereferencing pointer to incomplete type glyphs-eimage.c:1052: error: dereferencing pointer to incomplete type glyphs-eimage.c:1055: error: dereferencing pointer to incomplete type glyphs-eimage.c:1057: error: dereferencing pointer to incomplete type glyphs-eimage.c:1063: error: dereferencing pointer to incomplete type glyphs-eimage.c:1070: error: dereferencing pointer to incomplete type glyphs-eimage.c:1084: error: dereferencing pointer to incomplete type glyphs-eimage.c:1091: error: dereferencing pointer to incomplete type glyphs-eimage.c:1092: error: dereferencing pointer to incomplete type make[1]: *** [glyphs-eimage.o] Error 1 make: *** [src] Error 2 I checked to see whether there were any macports libpng leftovers, and there were not any includes in the /opt/local/include hierarchy. The problem appears to be an XEmacs variable (png_info) typedefed to png_infop araound line 870: struct png_unwind_data { FILE *instream; Binbyte *eimage; png_structp png_ptr; png_infop info_ptr; }; I have found one reference (from 14 January) to problems compiling emacs<22 (among other programs) as a result of API changes to libpng: http://mail-index.netbsd.org/pkgsrc-users/2011/01/14/msg013510.html The problem does not exist with libpng 1.4, and XEmacs seemed happy running with the headers from 1.4 but the libpng15.dylib. A diff shows there are many differences in the headers between those two versions. -- Here is a chair. Can you see it clearly?--Good--now translate it into French! -Ludwig Wittgenstein _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta