[XEN PATCH 10/15] build: rename $(AFLAGS) to $(XEN_AFLAGS)

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

We don't want the AFLAGS from the environment, they are usually meant
to build user space application and not for the hypervisor.

Config.mk doesn't provied any $(AFLAGS) so we can start a fresh
$(XEN_AFLAGS).

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 xen/Makefile         | 10 ++++++----
 xen/arch/x86/arch.mk |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/xen/Makefile b/xen/Makefile
index 127c0e40b5..c4a83fca76 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -258,6 +258,8 @@ export KBUILD_DEFCONFIG := $(ARCH)_defconfig
 # reparsing Config.mk by e.g. arch/x86/boot/.
 export XEN_TREEWIDE_CFLAGS := $(CFLAGS)
 
+XEN_AFLAGS =
+
 # CLANG_FLAGS needs to be calculated before calling Kconfig
 ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
 CLANG_FLAGS :=
@@ -412,9 +414,9 @@ ifneq ($(CONFIG_CC_IS_CLANG),y)
 CFLAGS += -Wa,--strip-local-absolute
 endif
 
-AFLAGS += -D__ASSEMBLY__
+XEN_AFLAGS += -D__ASSEMBLY__
 
-$(call cc-option-add,AFLAGS,CC,-Wa$(comma)--noexecstack)
+$(call cc-option-add,XEN_AFLAGS,CC,-Wa$(comma)--noexecstack)
 
 LDFLAGS-$(call ld-option,--warn-rwx-segments) += --no-warn-rwx-segments
 
@@ -425,7 +427,7 @@ CFLAGS += $(EXTRA_CFLAGS_XEN_CORE)
 # Most CFLAGS are safe for assembly files:
 #  -std=gnu{89,99} gets confused by #-prefixed end-of-line comments
 #  -flto makes no sense and annoys clang
-AFLAGS += $(filter-out -std=gnu% -flto,$(CFLAGS)) $(AFLAGS-y)
+XEN_AFLAGS += $(filter-out -std=gnu% -flto,$(CFLAGS)) $(AFLAGS-y)
 
 # LDFLAGS are only passed directly to $(LD)
 LDFLAGS += $(LDFLAGS_DIRECT) $(LDFLAGS-y)
@@ -462,7 +464,7 @@ include $(srctree)/arch/$(TARGET_ARCH)/arch.mk
 
 # define new variables to avoid the ones defined in Config.mk
 export XEN_CFLAGS := $(CFLAGS)
-export XEN_AFLAGS := $(AFLAGS)
+export XEN_AFLAGS := $(XEN_AFLAGS)
 export XEN_LDFLAGS := $(LDFLAGS)
 export CFLAGS_UBSAN
 
diff --git a/xen/arch/x86/arch.mk b/xen/arch/x86/arch.mk
index 7b5be9fe46..13ec88a628 100644
--- a/xen/arch/x86/arch.mk
+++ b/xen/arch/x86/arch.mk
@@ -80,7 +80,7 @@ ifeq ($(CONFIG_LD_IS_GNU),y)
 AFLAGS-$(call ld-option,--print-output-format) += 
-DHAVE_LD_SORT_BY_INIT_PRIORITY
 else
 # Assume all versions of LLD support this.
-AFLAGS += -DHAVE_LD_SORT_BY_INIT_PRIORITY
+XEN_AFLAGS += -DHAVE_LD_SORT_BY_INIT_PRIORITY
 endif
 
 ifneq ($(CONFIG_PV_SHIM_EXCLUSIVE),y)
-- 
Anthony PERARD