AWK script has no effect when .in file has CRLF

[Alexander Kruppa]

Hello,

I hit a problem with autoconf under MinGW. The .in file is checked out
from the Git repository and automatically converted to having CRLF
line ending. The $ac_tmp/defines.awk file has LF line endings, but
this does not seem to matter, the error behaviour is the same whether
$ac_tmp/defines.awk has LF or CRLF. Running, e.g.,


address@hidden
/builds/workspace/compile-mingw-win7/build/INRIACI-0TVJAL0/gf2x/confCAIwyz
$ gawk -f defines.awk ../../../../gf2x/gf2x/gf2x-config.h.in  | head
/* gf2x/gf2x-config.h.in.  Generated from configure.ac by autoheader.  */

/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H

/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H

/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H

does not substitute #undef correctly. When I convert gf2x-config.h.in
to have LF line endings, it works:

address@hidden
/builds/workspace/compile-mingw-win7/build/INRIACI-0TVJAL0/gf2x/confCAIwyz
$ gawk -f defines.awk ../../../../gf2x/gf2x/gf2x-config.h.in  | head
/* gf2x/gf2x-config.h.in.  Generated from configure.ac by autoheader.  */

/* Define to 1 if you have the <dlfcn.h> header file. */
/* #undef HAVE_DLFCN_H */

/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1

/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1


I'm not sure whether that is a bug in autoconf, in MinGW gawk, or user
error for having CRLF in the .in file. However, since MS-DOS based
systems have CRLF line endings, I suppose those should be supported in
.in files if MinGW is supported.

The configue script was created with GNU Autoconf 2.68. The gawk
program is GNU Awk 3.1.7 from MinGW:
$ mingw-get.exe upgrade msys-gawk-bin
upgrade: gawk-3.1.7-2-msys-1.0.13-bin.tar.lzma
mingw-get.exe: *** INFO *** package
gawk-3.1.7-2-msys-1.0.13-bin.tar.lzma is up to date

If you'd like the configure log files, the actual input files
(defines.awk and gf2x-config.h.in) or any other information, please
let me know.

Best regards,
Alex Kruppa