Re: Bootstrap failure on MS-Windows

[Glenn Morris <rgm@gnu.org>]

BTW, if I need to suggest an actual patch for this, it would be
something like the following (obv. untested). This is the only place
left in the Makefiles that uses absolute filenames, so I don't think
anything else is needed.

*** Makefile.in	2013-11-05 07:54:03 +0000
--- Makefile.in	2013-11-05 08:20:51 +0000
***************
*** 342,349 ****
  # nt/epaths.nt as the template.
  # Use the value of ${locallisppath} supplied by `configure',
  # to support the --enable-locallisppath argument.
  epaths-force-w32: FRC
! 	@(w32srcdir=`echo "${abs_srcdir}" | ${msys_to_w32}` ; 	\
  	  prefixpattern=`echo '${prefix}' | ${msys_to_w32} | ${msys_sed_sh_escape}` ; \
  	  locallisppath=`echo '${locallisppath}' | ${msys_lisppath_to_w32} | ${msys_prefix_subst}` ; \
  	  sed < ${srcdir}/nt/epaths.nt > epaths.h.$$$$		\
--- 342,357 ----
  # nt/epaths.nt as the template.
  # Use the value of ${locallisppath} supplied by `configure',
  # to support the --enable-locallisppath argument.
+ #
+ # When building with MinGW inside the MSYS tree, 'pwd' produces directories
+ # relative to the root of the MSYS tree, e.g. '/home/user/foo' instead of
+ # '/d/MSYS/home/user/foo'.  If such a value of srcdir is written to
+ # src/epaths.h, that causes temacs to fail, because, being a MinGW
+ # program that knows nothing of MSYS root substitution, it cannot find
+ # the data directory.  "pwd -W" produces Windows-style 'd:/foo/bar'
+ # absolute directory names, so we use it here to countermand that lossage.
  epaths-force-w32: FRC
! 	@(w32srcdir=`cd "$srcdir"; pwd -W | sed -e 's,^\([[A-Za-z]]\):,/\1,' | ${msys_to_w32}` ; 	\
  	  prefixpattern=`echo '${prefix}' | ${msys_to_w32} | ${msys_sed_sh_escape}` ; \
  	  locallisppath=`echo '${locallisppath}' | ${msys_lisppath_to_w32} | ${msys_prefix_subst}` ; \
  	  sed < ${srcdir}/nt/epaths.nt > epaths.h.$$$$		\

=== modified file 'configure.ac'
*** configure.ac	2013-11-05 07:11:24 +0000
--- configure.ac	2013-11-05 08:21:10 +0000
***************
*** 419,435 ****
  		[Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
  [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
  
- #### When building with MinGW inside the MSYS tree, 'pwd' produces
- #### directories relative to the root of the MSYS tree,
- #### e.g. '/home/user/foo' instead of '/d/MSYS/home/user/foo'.  When
- #### such a value of srcdir is written to the top-level Makefile, it
- #### gets propagated to src/epaths.h, and that causes temacs to fail,
- #### because, being a MinGW program that knows nothing of MSYS root
- #### substitution, it cannot find the data directory.  "pwd -W"
- #### produces Windows-style 'd:/foo/bar' absolute directory names, so
- #### we use it here to countermand that lossage.
- test "$MSYSTEM" = "MINGW32" && abs_srcdir=`(cd "$abs_srcdir"; pwd -W | sed -e 's,^\([[A-Za-z]]\):,/\1,')`
- 
  ### Canonicalize the configuration name.
  
  AC_CANONICAL_HOST
--- 419,424 ----