| dnl $Id: aclocal.m4,v 1.4 2000/06/26 00:20:19 djm Exp $ |
| dnl |
| dnl OpenSSH-specific autoconf macros |
| dnl |
| |
| |
| dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol) |
| dnl Does AC_EGREP_HEADER on 'header' for the string 'field' |
| dnl If found, set 'symbol' to be defined. Cache the result. |
| dnl TODO: This is not foolproof, better to compile and read from there |
| AC_DEFUN(OSSH_CHECK_HEADER_FOR_FIELD, [ |
| # look for field '$1' in header '$2' |
| dnl This strips characters illegal to m4 from the header filename |
| ossh_safe=`echo "$2" | sed 'y%./+-%__p_%'` |
| dnl |
| ossh_varname="ossh_cv_$ossh_safe""_has_"$1 |
| AC_MSG_CHECKING(for $1 field in $2) |
| AC_CACHE_VAL($ossh_varname, [ |
| AC_EGREP_HEADER($1, $2, [ dnl |
| eval "$ossh_varname=yes" dnl |
| ], [ dnl |
| eval "$ossh_varname=no" dnl |
| ]) dnl |
| ]) |
| ossh_result=`eval 'echo $'"$ossh_varname"` |
| if test -n "`echo $ossh_varname`"; then |
| AC_MSG_RESULT($ossh_result) |
| if test "x$ossh_result" = "xyes"; then |
| AC_DEFINE($3) |
| fi |
| else |
| AC_MSG_RESULT(no) |
| fi |
| ]) |
| |
| dnl OSSH_PATH_ENTROPY_PROG(variablename, command): |
| dnl Tidiness function, sets 'undef' if not found, and does the AC_SUBST |
| AC_DEFUN(OSSH_PATH_ENTROPY_PROG, [ |
| AC_PATH_PROG($1, $2) |
| if test -z "[$]$1" ; then |
| $1="undef" |
| fi |
| AC_SUBST($1) |
| ]) |
| |
