Sane way of making installation paths available to C ?

[John Levon]

Is there some relatively sane way of making stuff like $bindir path
available to C programs (via config.h preferably) ? I'm entirely sure
I'm not the only one who's had to solve this problem a number of times.

Currently we have (hold your bags nearby) :

if test "$prefix" = "NONE"; then
        prefix="$ac_default_prefix"
fi
if test "$exec_prefix" = "NONE"; then
        exec_prefix="$prefix"
fi
if test "$bindir" = "NONE"; then
        bindir="$prefix/bin"
fi
if test "$datadir" = "NONE"; then
        datadir="$prefix/share"
fi
OP_DATADIR=`eval echo "$datadir/$PACKAGE/"`
OP_BINDIR=`eval echo "$bindir/"`
AC_SUBST(OP_BINDIR)
AC_SUBST(OP_DATADIR)

into a version.h file.

regards
john