contrib/ntp/sntp/libevent/m4/libevent_openssl.m4

   1 dnl ######################################################################
   2 dnl OpenSSL support
   3 AC_DEFUN([LIBEVENT_OPENSSL], [
   4 AC_REQUIRE([NTP_PKG_CONFIG])dnl
   5
   6 case "$enable_openssl" in
   7  yes)
   8     have_openssl=no
   9     case "$PKG_CONFIG" in
  10      '')
  11         ;;
  12      *)
  13         OPENSSL_LIBS=`$PKG_CONFIG --libs openssl 2>/dev/null`
  14         case "$OPENSSL_LIBS" in
  15          '') ;;
  16          *) OPENSSL_LIBS="$OPENSSL_LIBS $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD"
  17             have_openssl=yes
  18             ;;
  19         esac
  20         OPENSSL_INCS=`$PKG_CONFIG --cflags openssl 2>/dev/null`
  21         ;;
  22     esac
  23     case "$have_openssl" in
  24      yes) ;;
  25      *)
  26         save_LIBS="$LIBS"
  27         LIBS=""
  28         OPENSSL_LIBS=""
  29         AC_SEARCH_LIBS([SSL_new], [ssl],
  30             [have_openssl=yes
  31             OPENSSL_LIBS="$LIBS -lcrypto $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD"],
  32             [have_openssl=no],
  33             [-lcrypto $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD])
  34         LIBS="$save_LIBS"
  35         ;;
  36     esac
  37     AC_SUBST(OPENSSL_INCS)
  38     AC_SUBST(OPENSSL_LIBS)
  39     case "$have_openssl" in
  40      yes)  AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl]) ;;
  41     esac
  42     ;;
  43 esac
  44
  45 # check if we have and should use openssl
  46 AM_CONDITIONAL(OPENSSL, [test "$enable_openssl" != "no" && test "$have_openssl" = "yes"])
  47 ])