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bug#14821: Build broken on 64-bit Cygwin starting with bzr revision 1133

From: Ken Brown
Subject: bug#14821: Build broken on 64-bit Cygwin starting with bzr revision 113315
Date: Tue, 09 Jul 2013 08:33:03 -0400
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6

On 7/8/2013 11:47 AM, Ken Brown wrote:
Starting with bzr revision 113315, the build on 64-bit Cygwin fails as

gcc -std=gnu99 -Demacs  -I. -I/c/src/emacs/64testt/src  -I../lib
-I/c/src/emacs/64testt/src/../lib    -D_REENTRANT -I/usr/include/gtk-3.0
-I/usr/include/atk-1.0 -I/usr/include/at-spi2-atk/2.0
-I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/
-I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/pixman-1
-D_REENTRANT -I/usr/include/librsvg-2.0 -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include -I/usr/include/gdk-pixbuf-2.0
-I/usr/include/cairo -I/usr/include/libpng15 -I/usr/include/pixman-1
-I/usr/include/freetype2   -fopenmp -I/usr/include/ImageMagick
-I/usr/include/libxml2   -I/usr/include/dbus-1.0
-I/usr/lib/dbus-1.0/include      -D_REENTRANT -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include   -D_REENTRANT -I/usr/include/gconf/2
-I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/freetype2       -MMD -MF deps/.d -MP
-I/usr/include/p11-kit-1   -D_REENTRANT -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include      -O0 -ggdb    \
   -o temacs  vm-limit.o dispnew.o frame.o scroll.o xdisp.o menu.o
xmenu.o window.o  charset.o coding.o category.o ccl.o character.o
chartab.o bidi.o  cm.o term.o terminal.o xfaces.o xterm.o xfns.o
xselect.o xrdb.o xsmfns.o xsettings.o gtkutil.o emacsgtkfixed.o
dbusbind.o  emacs.o keyboard.o macros.o keymap.o sysdep.o  buffer.o
filelock.o insdel.o marker.o  minibuf.o fileio.o dired.o  cmds.o
casetab.o casefiddle.o indent.o search.o regex.o undo.o  alloc.o data.o
doc.o editfns.o callint.o  eval.o floatfns.o fns.o font.o print.o
lread.o  syntax.o unexcw.o bytecode.o  process.o gnutls.o callproc.o
region-cache.o sound.o atimer.o  doprnt.o intervals.o textprop.o
composite.o xml.o gfilenotify.o  profiler.o     sheap.o cygw32.o xfont.o
ftfont.o xftfont.o ftxfont.o   fontset.o fringe.o image.o xgselect.o
terminfo.o  gmalloc.o   lastfile.o   ../lib/libgnu.a       -ltiff -ljpeg
-lpng -lz -lm -lgif -lXpm  -lgtk-3 -latk-bridge-2.0 -lgdk-3 -latk-1.0
-lXinerama -lXi -lXrandr -lXcursor -lXcomposite -lXdamage
-lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo-gobject -lgio-2.0 -lXfixes
-lpangoft2-1.0 -lharfbuzz -lpango-1.0 -lcairo -lpixman-1 -lfontconfig
-lexpat -lfreetype -lbz2 -lxcb-shm -lxcb-render -lXrender -lXext -lX11
-lxcb -lXau -lXdmcp -lpng15 -lm -lz -lgmodule-2.0 -lgobject-2.0 -lffi
-lglib-2.0 -lintl -liconv -lpcre   -lSM -lICE -lX11 -lXrender -lXft
-lXrender -lfontconfig -lexpat -lfreetype -lz -lbz2 -lX11 -lxcb -lXau
-lXdmcp     -lrsvg-2 -lgio-2.0 -lgdk_pixbuf-2.0 -lcairo -lgmodule-2.0
-lgobject-2.0 -lffi -lpixman-1 -lfontconfig -lexpat -lfreetype -lbz2
-lpng15 -lm -lz -lxcb-shm -lxcb-render -lXrender -lXext -lglib-2.0
-lintl -liconv -lpcre -lX11 -lxcb -lXau -lXdmcp   -lMagickWand
-lMagickCore         -ldbus-1 -lpthread -lrt     -lXrandr -lXext
-lXrender -lX11 -lxcb -lXau -lXdmcp   -lXinerama -lXext -lX11 -lxcb
-lXau -lXdmcp    -lxml2 -lz -liconv -lm       -lncurses  -lgio-2.0 -lz
-lgmodule-2.0 -lgobject-2.0 -lffi -lglib-2.0 -lintl -liconv -lpcre
-lgconf-2 -ldbus-1 -lpthread -lrt -lgio-2.0 -lz -lgmodule-2.0
-lgobject-2.0 -lffi -lglib-2.0 -lintl -liconv -lpcre   -lgobject-2.0
-lffi -lglib-2.0 -lintl -liconv -lpcre     -lfreetype -lz -lbz2
-lfontconfig -lexpat -lfreetype -lz -lbz2      -lgnutls -lnettle
-lhogweed -lgmp -lintl -liconv -ltasn1 -lp11-kit -lz   -lpthread
-lgio-2.0 -lz -lgmodule-2.0 -lgobject-2.0 -lffi -lglib-2.0 -lintl
-liconv -lpcre
../lib/libgnu.a(pipe2.o): In function `rpl_pipe2':
/c/src/emacs/64testt/lib/pipe2.c:144: undefined reference to `setmode'

I think the issue here is that pipe2.c shouldn't be compiled on Cygwin.

Sorry, that was a stupid guess, made without even looking at pipe2.c. But the point is that setmode shouldn't be used on Cygwin (and wasn't prior to revision 113315).

The following patch allows the build to complete, but I don't know if it's the right fix:

=== modified file 'lib/pipe2.c'
--- lib/pipe2.c 2013-07-07 18:00:14 +0000
+++ lib/pipe2.c 2013-07-09 12:20:47 +0000
@@ -138,7 +138,7 @@
         goto fail;

-# if O_BINARY
+# if O_BINARY && !defined (CYGWIN)
   if (flags & O_BINARY)
       setmode (fd[1], O_BINARY);


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