3 dnl OpenSSH-specific autoconf macros
7 dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol)
8 dnl Does AC_EGREP_HEADER on 'header' for the string 'field'
9 dnl If found, set 'symbol' to be defined. Cache the result.
10 dnl TODO: This is not foolproof, better to compile and read from there
11 AC_DEFUN(OSSH_CHECK_HEADER_FOR_FIELD, [
12 # look for field '$1' in header '$2'
13 dnl This strips characters illegal to m4 from the header filename
14 ossh_safe=`echo "$2" | sed 'y%./+-%__p_%'`
16 ossh_varname="ossh_cv_$ossh_safe""_has_"$1
17 AC_MSG_CHECKING(for $1 field in $2)
18 AC_CACHE_VAL($ossh_varname, [
19 AC_EGREP_HEADER($1, $2, [ dnl
20 eval "$ossh_varname=yes" dnl
22 eval "$ossh_varname=no" dnl
25 ossh_result=`eval echo \$"$ossh_varname"`
26 if test -n "`echo $ossh_varname`"; then
27 AC_MSG_RESULT($ossh_result)
28 if test "x$ossh_result" = "xyes"; then
36 dnl OSSH_PATH_ENTROPY_PROG(variablename, command):
37 dnl Tidiness function, sets 'undef' if not found, and does the AC_SUBST
38 AC_DEFUN(OSSH_PATH_ENTROPY_PROG, [
40 if test -z "[$]$1" ; then