Cygwin Subprocesses on XEmacs

Vin Shelton
Fri Jan 30 16:12:00 GMT 2015

Volker -
On Fri, Jan 30, 2015 at 10:51 AM, Dr. Volker Zell wrote:
> I downloaded the latest version 21.4.23 and tried to build it, but I consistently get:
> gcc -c -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/build=/usr/src/debug/xemacs-21.4.22-2 -fdebug-prefix-map=/cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/src/xemacs-21.4.22=/usr/src/debug/xemacs-21.4.22-2  -Demacs -I. -DHAVE_CONFIG_H -Wno-sign-compare -fno-caller-saves dump-id.c
> gcc -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/build=/usr/src/debug/xemacs-21.4.22-2 -fdebug-prefix-map=/cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/src/xemacs-21.4.22=/usr/src/debug/xemacs-21.4.22-2     -o xemacs  abbrev.o alloc.o blocktype.o buffer.o bytecode.o callint.o callproc.o casefiddle.o casetab.o chartab.o cmdloop.o cmds.o console.o console-stream.o data.o device.o dired.o doc.o doprnt.o dynarr.o editfns.o elhash.o emacs.o eval.o events.o filelock.o ntplay.o dumper.o scrollbar-msw.o menubar-msw.o toolbar-msw.o dialog-msw.o console-msw.o device-msw.o event-msw.o frame-msw.o objects-msw.o select-msw.o redisplay-msw.o glyphs-msw.o gui-msw.o balloon_help.o balloon-x.o dragdrop.o eldap.o postgresql.o dgif_lib.o gif_io.o menubar.o scrollbar.o dialog.o toolbar.o menubar-x.o scrollbar-x.o dialog-x.o toolbar-x.o gui-x.o mule.o mule-ccl.o mule-charset.o file-coding.o input-method-xlib.o realpath.o getloadavg.o inline.o nas.o console-tty.o device-tty.o event-tty.o frame-tty.o objects-tty.o redisplay-tty.o cm.o terminfo.o event-unixoid.o database.o process-unix.o event-stream.o extents.o faces.o fileio.o  filemode.o floatfns.o fns.o font-lock.o frame.o general.o glyphs.o glyphs-eimage.o glyphs-widget.o gui.o gutter.o  hash.o imgproc.o indent.o insdel.o intl.o keymap.o  line-number.o lread.o lstream.o macros.o marker.o md5.o minibuf.o objects.o opaque.o print.o process.o profile.o rangetab.o redisplay.o redisplay-output.o regex.o search.o select.o  signal.o sound.o specifier.o strftime.o symbols.o syntax.o sysdep.o undo.o console-x.o device-x.o event-Xt.o frame-x.o glyphs-x.o objects-x.o redisplay-x.o select-x.o xgccache.o widget.o window.o win32.o xemacs_res.o lastfile.o gmalloc.o vm-limit.o  EmacsFrame.o EmacsShell.o TopLevelEmacsShell.o TransientEmacsShell.o EmacsManager.o  offix.o dump-id.o ../lwlib/liblw.a  -laudio -lXaw3d -lXaw3d -ltiff -lpng -ljpeg -lz -lcompface -lXpm -lXmu -lXt -lXext -lX11 -lSM -lICE -ldb -lncurses -lintl -lpq -lldap -llber -lwinmm -lshell32 -lgdi32 -luser32 -lcomdlg32 -lcomctl32 -lkernel32 -lwinspool
> collect2: error: ld terminated with signal 11 [Segmentation fault], core dumped
> GNUmakefile:159: recipe for target 'xemacs' failed
> make[1]: *** [xemacs] Error 1
> make[1]: Leaving directory '/cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/build/src'
> GNUmakefile:123: recipe for target 'src' failed
> make: *** [src] Error 2
>  [1;31m*** ERROR: [0;0m make failed
> After the ld core dump, when I delete the corrupted xemacs.exe from
> /cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/build/src manually
> and restart the build with make from the
> /cygdrive/d/misc/src/release/xemacs-21.4.22-2.i686/build directory
> again, the build actually succeeds and ld doesn't core dump
> anymore.

I don't see this segfault.  I am running the default version of gcc,
and I assume you are, too.  Perhaps you need to rebaseall?

Your build path is "...xemacs-21.4.22..." are you sure you're using
21.4.23 sources?

> Additionally I had to use an older version of texinfo (namely
> version 4.13) otherwise the build breaks when generating the .info files
> (I got the information to use an older version from Vin Shelton).

Yes, the texinfo incompatibilities is one reason I want to EOL 21.4.
An alternative approach for Cygwin would be to patch the .texi sources
to work with newer texinfos.

> I then installed everything and with my current setup xemacs crashed as
> soon as font-locking is involved. The current 32 bit xemacs-21.4.22
> version works fine with this setup. After googling around I found a
> workaround by setting (setq progress-feedback-use-echo-area t) in my
> .emacs.

This error should be fixed in 21.4.23, there's a new designed to prevent this.  Again - are you sure
you're using 21.4.23?

> So, the good news finally after 6 years !!! it seems I have a working
> xemacs on 32 bit which runs on cygwin 1.7.x. Of course I will need to do
> more testing.
> The bad news, an automatic build via cygport is currently not possible because:
> 1. cygport's compile stage bails out after the ld core dump
> 2. the current xemacs version needs an older version of texinfo (4.13)
>    than we have currently in the distribution (5.2-3)
> Question: How shall I proceed ?

  - Vin

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