[xen stable-4.15] Config.mk: correct PIE-related option(s) in EMBEDDED_EXTRA_CFLAGS

[patchbot@xxxxxxx]

commit 19cf28b515f21da02df80e68f901ad7650daaa37
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Oct 11 15:15:55 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Oct 11 15:15:55 2022 +0200

    Config.mk: correct PIE-related option(s) in EMBEDDED_EXTRA_CFLAGS
    
    I haven't been able to find evidence of "-nopie" ever having been a
    supported compiler option. The correct spelling is "-no-pie".
    Furthermore like "-pie" this is an option which is solely passed to the
    linker. The compiler only recognizes "-fpie" / "-fPIE" / "-fno-pie", and
    it doesn't infer these options from "-pie" / "-no-pie".
    
    Add the compiler recognized form, but for the possible case of the
    variable also being used somewhere for linking keep the linker option as
    well (with corrected spelling).
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
    
    Build: Drop -no-pie from EMBEDDED_EXTRA_CFLAGS
    
    This breaks all Clang builds, as demostrated by Gitlab CI.
    
    Contrary to the description in ecd6b9759919, -no-pie is not even an option
    passed to the linker.  GCC's actual behaviour is to inhibit the passing of
    -pie to the linker, as well as selecting different cr0 artefacts to be 
linked.
    
    EMBEDDED_EXTRA_CFLAGS is not used for $(CC)-doing-linking, and not liable to
    gain such a usecase.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    Tested-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Fixes: ecd6b9759919 ("Config.mk: correct PIE-related option(s) in 
EMBEDDED_EXTRA_CFLAGS")
    master commit: ecd6b9759919fa6335b0be1b5fc5cce29a30c4f1
    master date: 2022-09-08 09:25:26 +0200
    master commit: 13a7c0074ac8fb31f6c0485429b7a20a1946cb22
    master date: 2022-09-27 15:40:42 -0700
---
 Config.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Config.mk b/Config.mk
index 96d89b2f7d..9f87608f66 100644
--- a/Config.mk
+++ b/Config.mk
@@ -203,7 +203,7 @@ endif
 APPEND_LDFLAGS += $(foreach i, $(APPEND_LIB), -L$(i))
 APPEND_CFLAGS += $(foreach i, $(APPEND_INCLUDES), -I$(i))
 
-EMBEDDED_EXTRA_CFLAGS := -nopie -fno-stack-protector -fno-stack-protector-all
+EMBEDDED_EXTRA_CFLAGS := -fno-pie -fno-stack-protector -fno-stack-protector-all
 EMBEDDED_EXTRA_CFLAGS += -fno-exceptions -fno-asynchronous-unwind-tables
 
 XEN_EXTFILES_URL ?= http://xenbits.xen.org/xen-extfiles
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.15