mirror of https://github.com/Cisco-Talos/clamav
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.6 KiB
68 lines
1.6 KiB
dnl AC_C_DNS
|
|
dnl Checks resolv.h presence and usability
|
|
dnl Checks for specific lresolv exports
|
|
dnl Checks for lresolve reentrance
|
|
dnl
|
|
dnl Note using AC_LINK_IFELSE instead of AC_CHECK_LIB
|
|
dnl as symbols are often redefined in resolv.h
|
|
|
|
AC_DEFUN([AC_C_DNS], [
|
|
|
|
AC_ARG_ENABLE([dns],
|
|
AC_HELP_STRING([--disable-dns], [disable support for database verification through DNS]),
|
|
[want_dns=$enableval], [want_dns=yes]
|
|
)
|
|
if test $want_dns = yes; then
|
|
ac_cv_have_lresolv=no
|
|
AC_CHECK_HEADER([resolv.h],
|
|
[
|
|
AC_CACHE_CHECK([for dn_expand in std libs], [ac_cv_have_lresolv_std], [
|
|
ac_cv_have_lresolv_std='no'
|
|
AC_LINK_IFELSE([
|
|
#include <sys/types.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
#include <resolv.h>
|
|
int main() { return (long)dn_expand; }
|
|
],
|
|
[
|
|
ac_cv_have_lresolv_std='yes'
|
|
ac_cv_have_lresolv=''
|
|
])
|
|
])
|
|
if test "x$ac_cv_have_lresolv" = "xno"; then
|
|
bklibs=$LIBS
|
|
LIBS=-lresolv
|
|
AC_CACHE_CHECK([for dn_expand in -lresolv], [ac_cv_have_lresolv_lresolv], [
|
|
ac_cv_have_lresolv_lresolv='yes'
|
|
AC_LINK_IFELSE([
|
|
#include <sys/types.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
#include <resolv.h>
|
|
int main() { return (long)dn_expand; }
|
|
],
|
|
[
|
|
ac_cv_have_lresolv_lresolv='yes'
|
|
ac_cv_have_lresolv=' -lresolv'
|
|
])
|
|
])
|
|
LIBS=$bklibs;
|
|
fi
|
|
],
|
|
[ ac_cv_have_lresolv=no ],
|
|
[
|
|
#include <sys/types.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/nameser.h>
|
|
])
|
|
if test "x$ac_cv_have_lresolv" != "xno"; then
|
|
FRESHCLAM_LIBS="$FRESHCLAM_LIBS$ac_cv_have_lresolv"
|
|
AC_DEFINE([HAVE_RESOLV_H],1,[have resolv.h])
|
|
else
|
|
AC_MSG_WARN([****** DNS support disabled])
|
|
fi
|
|
fi
|
|
|
|
])
|
|
|
|
|