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[PATCH 1/2][XTF] build: suppress GNU ld 2.39 warning about RWX load segments
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 29 Sep 2022 12:04:28 +0200
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 29 Sep 2022 10:04:35 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
We cannot really avoid such and we're also not really at risk because of
them, as we control page table permissions ourselves rather than relying
on a loader of some sort.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/build/common.mk
+++ b/build/common.mk
@@ -20,9 +20,15 @@ COMMON_FLAGS := -pipe -I$(ROOT)/include
cc-option = $(shell if [ -z "`echo 'int p=1;' | $(CC) $(1) -S -o /dev/null -x
c - 2>&1`" ]; \
then echo y; else echo n; fi)
+ld-option = $(shell if $(LD) -v $(1) >/dev/null 2>&1; then echo y; else echo
n; fi)
+
# Disable PIE, but need to check if compiler supports it
COMMON_CFLAGS-$(call cc-option,-no-pie) += -no-pie
+# Suppress warnings about LOAD segments with RWX permissions, as what we build
+# aren't normal user-mode executables.
+LDFLAGS-$(call ld-option,--warn-rwx-segments) := --no-warn-rwx-segments
+
COMMON_AFLAGS := $(COMMON_FLAGS) -D__ASSEMBLY__
COMMON_CFLAGS := $(COMMON_FLAGS) $(COMMON_CFLAGS-y)
COMMON_CFLAGS += -Wall -Wextra -Werror -std=gnu99 -Wstrict-prototypes -O3 -g
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