gentoo-overlay/app-emulation/xen-pvgrub/files/xen-4-fix_dotconfig-gcc.patch

# Fix gcc-4.6
diff -ur xen-4.2.0.orig/extras/mini-os/minios.mk xen-4.2.0/extras/mini-os/minios.mk
--- extras/mini-os/minios.mk	2012-09-17 18:21:17.000000000 +0800
+++ extras/mini-os/minios.mk	2012-12-05 14:01:10.653260260 +0800
@@ -6,7 +6,7 @@
 
 # Define some default flags.
 # NB. '-Wcast-qual' is nasty, so I omitted it.
-DEF_CFLAGS += -fno-builtin -Wall -Werror -Wredundant-decls -Wno-format -Wno-redundant-decls
+DEF_CFLAGS += -fno-builtin -Wall  -Wredundant-decls -Wno-format -Wno-redundant-decls
 DEF_CFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
 DEF_CFLAGS += $(call cc-option,$(CC),-fgnu89-inline)
 DEF_CFLAGS += -Wstrict-prototypes -Wnested-externs -Wpointer-arith -Winline
diff -ur xen-4.2.0.orig/tools/libxc/Makefile xen-4.2.0/tools/libxc/Makefile
--- tools/libxc/Makefile       2012-09-17 18:21:18.000000000 +0800
+++ tools/libxc/Makefile       2012-12-05 14:01:10.653260260 +0800
@@ -73,7 +73,7 @@

 -include $(XEN_TARGET_ARCH)/Makefile

-CFLAGS   += -Werror -Wmissing-prototypes
+CFLAGS   +=  -Wmissing-prototypes
 CFLAGS   += -I. $(CFLAGS_xeninclude)

 # Needed for posix_fadvise64() in xc_linux.c
# Drop .config
diff -ur xen-4.2.0.orig/Config.mk xen-4.2.0/Config.mk
--- Config.mk	2012-09-17 18:23:12.000000000 +0800
+++ Config.mk	2012-12-05 14:01:10.641260261 +0800
@@ -7,7 +7,6 @@
 # fallback for older make
 realpath = $(wildcard $(foreach file,$(1),$(shell cd -P $(dir $(file)) && echo "$$PWD/$(notdir $(file))")))
 
--include $(XEN_ROOT)/.config
 
 # A debug build of Xen and tools?
 debug ?= n