Make sure compiler supports static-libgcc before using it.

configure.in

@@ -1920,8 +1920,22 @@ AC_PROG_GCC_TRADITIONAL
 AC_C_CONST
 AC_C_VOLATILE
 if test X"$with_gnu_ld" != "yes" -a -n "$GCC"; then
+    _CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS -static-libgcc"
+    AC_CACHE_CHECK([whether $CC understands -static-libgcc],
+	[sudo_cv_var_gcc_static_libgcc],
+	[AC_LINK_IFELSE(
+	    [AC_LANG_PROGRAM([[]], [[]])],
+		[sudo_cv_var_gcc_static_libgcc=yes],
+		[sudo_cv_var_gcc_static_libgcc=no]
+	    )
+	]
+    )
+    CFLAGS="$_CFLAGS"
+    if test "$sudo_cv_var_gcc_static_libgcc" = "yes"; then
 	LTLDFLAGS="$LTLDFLAGS -Wc,-static-libgcc"
     fi
+fi
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