From 93178ab04a3dd129848e398838e14f22ba0ba23f Mon Sep 17 00:00:00 2001
From: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Date: Mon, 27 May 2013 14:20:57 +1000
Subject: [PATCH] configure: dtc: Probe for libfdt_env.h

Currently QEMU provides a local clone of the file libfdt_env.h in
/include. This file is supposed to come with the libfdt package and is
only needed for broken installs of libfdt. Now that we have submodule
dtc, just ignore these broken installs and prompt for the dtc submodule
install instead. QEMU's local libfdt_env.h is removed accordingly.

Manifests as a bug when building QEMU with modern libfdt. The new
version of libfdt does not compile when QEMUs libfdt_env.h takes
precedence over the hosts.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 9b6a3a52e3f46cfbc1ded9ab56385ec045e46705.1369628289.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 96ce65457690561417ae8e6f0e85f3c6f135018b)
---
 configure            |  2 ++
 include/libfdt_env.h | 36 ------------------------------------
 2 files changed, 2 insertions(+), 36 deletions(-)
 delete mode 100644 include/libfdt_env.h

diff --git a/configure b/configure
index f558a21..ed09648 100755
--- a/configure
+++ b/configure
@@ -2525,7 +2525,9 @@ fi
 # fdt probe
 if test "$fdt" != "no" ; then
   fdt_libs="-lfdt"
+  # explicitly check for libfdt_env.h as it is missing in some stable installs
   cat > $TMPC << EOF
+#include <libfdt_env.h>
 int main(void) { return 0; }
 EOF
   if compile_prog "" "$fdt_libs" ; then
diff --git a/include/libfdt_env.h b/include/libfdt_env.h
deleted file mode 100644
index 3667d4c..0000000
--- a/include/libfdt_env.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- * Copyright IBM Corp. 2008
- * Authors: Hollis Blanchard <hollisb@us.ibm.com>
- *
- */
-
-#ifndef _LIBFDT_ENV_H
-#define _LIBFDT_ENV_H
-
-#include "qemu/bswap.h"
-
-#ifdef HOST_WORDS_BIGENDIAN
-#define fdt32_to_cpu(x)  (x)
-#define cpu_to_fdt32(x)  (x)
-#define fdt64_to_cpu(x)  (x)
-#define cpu_to_fdt64(x)  (x)
-#else
-#define fdt32_to_cpu(x)  bswap32(x)
-#define cpu_to_fdt32(x)  bswap32(x)
-#define fdt64_to_cpu(x)  bswap64(x)
-#define cpu_to_fdt64(x)  bswap64(x)
-#endif
-
-#endif /* _LIBFDT_ENV_H */