Support for re-running autoconf in the absence of the autoconf macro

[u/mdw/putty] / unix / configure.ac

diff --git a/unix/configure.ac b/unix/configure.ac
index 846a35c..4b30fb0 100644 (file)
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -11,16 +11,33 @@ AC_CONFIG_HEADERS([uxconfig.h:uxconfig.in])
 AC_PROG_INSTALL
 AC_PROG_CC
 if test "X$GCC" = Xyes; then
-    CFLAGS="$CFLAGS -Wall -Werror"
+    PUTTYCFLAGS="-Wall -Werror"
+else
+    PUTTYCFLAGS=""
 fi
+AC_SUBST(PUTTYCFLAGS)
+
+AC_ARG_WITH([gssapi],
+  [AS_HELP_STRING([--without-gssapi],
+                  [disable GSSAPI support])],
+  [],
+  [with_gssapi=yes])
+
+WITH_GSSAPI=
+AS_IF([test "x$with_gssapi" != xno],
+  [AC_DEFINE([WITH_GSSAPI], [1], [Define if building with GSSAPI support.])])
 
 AC_CHECK_HEADERS([utmpx.h sys/select.h],,,[
 #include <sys/types.h>
 #include <utmp.h>])
 
 # Look for both GTK 1 and GTK 2.
+ifdef([AM_PATH_GTK],[
 AM_PATH_GTK([1.2.0], [gtk=1], [gtk=none])
+],[AC_WARNING([generating configure script without GTK 1 autodetection])])
+ifdef([AM_PATH_GTK_2_0],[
 AM_PATH_GTK_2_0([2.0.0], [gtk=2], [])
+],[AC_WARNING([generating configure script without GTK 2 autodetection])])
 if test "$gtk" = "none"; then
   all_targets="all-cli"
 else
@@ -39,6 +56,19 @@ AC_SUBST([all_targets])
 
 AC_SEARCH_LIBS([socket], [xnet])
 
+AS_IF([test "x$with_gssapi" != xno],
+  [AC_SEARCH_LIBS(
+    [dlopen],[dl],
+    [],
+    [AC_DEFINE([NO_LIBDL], [1], [Define if we could not find libdl.])
+     AC_CHECK_HEADERS([gssapi/gssapi.h])
+     AC_SEARCH_LIBS(
+       [gss_init_sec_context],[gssapi gssapi_krb5 gss],
+       [],
+       [AC_DEFINE([NO_GSSAPI_LIB], [1], [Define if we could not find a gssapi library])])])])
+
+AC_CHECK_LIB(X11, XOpenDisplay)
+
 AC_CHECK_FUNCS([getaddrinfo ptsname setresuid strsignal updwtmpx])
 
 AC_OUTPUT
@@ -70,4 +100,12 @@ AH_BOTTOM([
 #ifndef HAVE_PANGO_FONT_MAP_LIST_FAMILIES
 # define PANGO_PRE_1POINT6
 #endif
+#if !defined(WITH_GSSAPI)
+# define NO_GSSAPI
+#endif
+#if !defined(NO_GSSAPI) && defined(NO_LIBDL)
+# if !defined(HAVE_GSSAPI_GSSAPI_H) || defined(NO_GSSAPI_LIB)
+#  define NO_GSSAPI
+# endif
+#endif
 ])