AC_PATH_PROG breaks with $PATH in $4.

[Roger Leigh]

I have the following code in a configure.ac:


AC_MSG_WARN([PATH=$PATH])

if test x${BUILD_FOOMATIC} = xyes ; then
  AC_PATH_PROG([FOOMATIC_KITLOAD], [foomatic-kitload], ,
               [$PATH:/usr/sbin:/usr/local/sbin])
  if test -z "$FOOMATIC_KITLOAD" ; then
    AC_MSG_WARN(Cannot find foomatic-kitload; attempt to install foomatic data 
will fail)
  fi
fi


When I use this (with autoconf 2.53), the macro fails:

configure: WARNING: PATH=/bin:/usr/bin
checking for foomatic-kitload... no
configure: WARNING: Cannot find foomatic-kitload; attempt to install foomatic 
data will fail

but if I remove the $PATH: from the AC_PATH_PROG call, it works:

configure: WARNING: PATH=/bin:/usr/bin
checking for foomatic-kitload... /usr/sbin/foomatic-kitload

This happens whatever PATH is, e.g. bin:/usr/bin, or
~/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games

AC_PATH_PROG is used in this way in the autoconf manual.  Is this a
bug in autoconf, or am I doing something wrong?


Thanks,
Roger

-- 
Roger Leigh
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