merk_prog_tcl

Searches for tcl (tclsh and wish) in PATH and checks which version is installed. The macro bails out if either tcl is not found or the minimum version is not satisfied, unless minimum version is "0".

Example: MERK_PROG_TCL This checks for tcl and if not found, exits with an error. If found, it prints tcl path and version number.

MERK_PROG_TCL([8.0]) Checks for tcl and exits with an error if its not found or the version is below 8.0.

@version: $Rev: 3 $ @author: Uwe Mayer <merkosh@hadiko.de>

AC_DEFUN([MERK_PROG_TCL], [
#-- check for tclsh in PATH
AC_PATH_PROG([TCLSH], [tclsh], [no])
if [(test x"$TCLSH" == x"no") && (test x"$1" != x"0")]; then
        AC_MSG_ERROR([tclsh not found])
fi

#-- check for wish in PATH
AC_PATH_PROG([WISH], [wish], [no])

#-- check vor tcl version
AC_MSG_CHECKING([tcl version])
tmp=$(tempfile)
echo ["puts [set tcl_version]"] >"$tmp"
version=$(tclsh "$tmp")
rm "$tmp"
AC_MSG_RESULT([$version])

#-- compare tcl version with min-version
required=$1
if [(test x"$1" != x"") && (test "${required/./}" -gt "${version/./}")]; then
        AC_MSG_ERROR([tcl version $1 required])
fi
])dnl