build: Make sure AC_INCLUDES_DEFAULT is used.

Without using AC_INCLUDES_DEFAULT explicitly,
certain platforms will complain that the header
was found, but not usable by the compiler.
This happens for instance on Solaris where certain
headers are needed to pull in proper defines.

https://bugzilla.gnome.org/show_bug.cgi?id=667307

Conflicts:

	configure.ac

diff --git a/configure.ac b/configure.ac
index cc2f7f7..0f2e9e3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -186,11 +186,11 @@ AM_CONDITIONAL(HAVE_LIBXML_HTML, test "x$HAVE_LIBXML_HTML" = "xyes")
 
 dnl used in gst/tcp
 AC_CHECK_HEADERS([sys/socket.h],
-  HAVE_SYS_SOCKET_H="yes", HAVE_SYS_SOCKET_H="no")
+  [HAVE_SYS_SOCKET_H="yes"], [HAVE_SYS_SOCKET_H="no"], [AC_INCLUDES_DEFAULT])
 AM_CONDITIONAL(HAVE_SYS_SOCKET_H, test "x$HAVE_SYS_SOCKET_H" = "xyes")
 
 dnl used in gst-libs/gst/pbutils and associated unit test
-AC_CHECK_HEADERS([process.h sys/types.h sys/wait.h sys/stat.h])
+AC_CHECK_HEADERS([process.h sys/types.h sys/wait.h sys/stat.h], [], [], [AC_INCLUDES_DEFAULT])
 
 dnl also, Windows does not have long long
 AX_CREATE_STDINT_H
@@ -490,7 +490,7 @@ AG_GST_CHECK_FEATURE(X, [X libraries and plugins],
   CPPFLAGS="$CPPFLAGS $X_CFLAGS"
 
   dnl now try to find the HEADER
-  AC_CHECK_HEADER(X11/Xlib.h, HAVE_X="yes", HAVE_X="no")
+  AC_CHECK_HEADER([X11/Xlib.h], [HAVE_X="yes"], [HAVE_X="no"], [AC_INCLUDES_DEFAULT])
 
   if test "x$HAVE_X" = "xno"
   then