contrib/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         for lib in crypto eay32; do
  30                 # clear cache
  31                 unset ac_cv_search_SSL_new
  32                 AC_SEARCH_LIBS([SSL_new], [ssl ssl32],
  33                     [have_openssl=yes
  34                     OPENSSL_LIBS="$LIBS -l$lib $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD"],
  35                     [have_openssl=no],
  36                     [-l$lib $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD])
  37                 LIBS="$save_LIBS"
  38                 test "$have_openssl" = "yes" && break
  39         done
  40         ;;
  41     esac
  42     AC_SUBST(OPENSSL_INCS)
  43     AC_SUBST(OPENSSL_LIBS)
  44     case "$have_openssl" in
  45      yes)  AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl]) ;;
  46     esac
  47     ;;
  48 esac
  49
  50 # check if we have and should use openssl
  51 AM_CONDITIONAL(OPENSSL, [test "$enable_openssl" != "no" && test "$have_openssl" = "yes"])
  52 ])