[Discuss-gnuradio] problem with ^M (CR) in configure.ac and svn (Windows/MinGW)

[Don Ward]

When I try to build with rev. 3220 on Windows with MinGW/msys, ./configure 
fails with

configure: creating ./config.status
./config.status: line 529: syntax error near unexpected token `\"'
./config.status: line 529: `  "\" ) CONFIG_FILES="$CONFIG_FILES \" ;;'

This can be traced to the following lines in configure:

 "gr-trellis/src/python/run_tests" ) CONFIG_FILES="$CONFIG_FILES 
gr-trellis/src
/python/run_tests" ;;
 "\^M" ) CONFIG_FILES="$CONFIG_FILES \^M" ;;
 "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
 "\^M" ) CONFIG_FILES="$CONFIG_FILES \^M" ;;
 "config/Makefile^M" ) CONFIG_FILES="$CONFIG_FILES config/Makefile^M" ;;
 "depfiles" ) CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;

Which are apparently produced by lines in configure.ac:

^M
AC_CONFIG_FILES([\^M
         Makefile \^M
         config/Makefile^M
])^M
^M

The "^M" that appear in the above denote the single control character for 
carriage return.

Removing the ^M characters from the AC_CONFIG_FILES fucntion in configure.ac 
fixes the problem.

Note that svn seems to ignore the ^M characters.  It does not recognize the 
removal of the ^M characters as a change and will not report the file as 
being modified, will not report any diffs, will not revert, and (I am 
guessing) will not commit the change.

Can autoconf be fixed to ingore the extra ^M characters?  Should svn 
recongize addition or removal of ^M characters as a change to a file?  In 
any case, we need to fix configure.ac, and recognize that (at least in this 
case) saving files with ^M at the end of every line can be a problem.

Best regards,

-- Don Ward