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x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: zVYcbjpDyi7TJTfNwM3l/6DPXt8ZjhWR90luU7wi3EIDTHSitNWYUKbsIQ2Fjjpp+5c+Ss88dl GGQrN6lqKXZ2f1CR8BxDuChdXbHioO9jtGr7G0FRHPiNXXWk2fnfUuHFpmB1zsOaVQBffY3e4o j9tPtxZgNCh8SsEJOEVjk24PbduuroDlnK77543MyhqBUwZbfYtvMU+lmIWiS/EvT08E0/xZFi iVbKynpaxVRtOV1rKuI8LWM4GelYzR8ONzSBf7pKRLRhcLy+y4nsYqMzRKsYAqQd0di3CkI7Uw Gsg= X-SBRS: 2.7 X-MesageID: 15338337 X-Ironport-Server: esa4.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.72,308,1580792400"; d="scan'208";a="15338337" From: Anthony PERARD To: Date: Thu, 26 Mar 2020 13:56:21 +0000 Message-ID: <20200326135621.687685-1-anthony.perard@citrix.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Xen-devel] [XEN PATCH] build: detect compiler upgrade to rerun kconfig X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , Julien Grall , Wei Liu , Andrew Cooper , Ian Jackson , George Dunlap , Jan Beulich , Anthony PERARD Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" This simple comment allows to detect when $(CC) changes version. Kconfig will be rerun in this case. (Rerun is forced by include/config.auto.cmd which detects changes of CC_VERSION_TEXT value). Signed-off-by: Anthony PERARD Acked-by: Andrew Cooper --- xen/Kconfig | 2 ++ xen/Makefile | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/xen/Kconfig b/xen/Kconfig index 073042f46730..4ffa2f90a267 100644 --- a/xen/Kconfig +++ b/xen/Kconfig @@ -4,6 +4,8 @@ # mainmenu "Xen/$(SRCARCH) $(XEN_FULLVERSION) Configuration" =20 +comment "Compiler: $(CC_VERSION_TEXT)" + source "scripts/Kconfig.include" =20 config BROKEN diff --git a/xen/Makefile b/xen/Makefile index e5f7b1ae13bc..6dadb3afc119 100644 --- a/xen/Makefile +++ b/xen/Makefile @@ -277,6 +277,10 @@ $(foreach base,arch/x86/mm/guest_walk_% \ arch/x86/mm/shadow/guest_%, \ $(foreach ext,o i s,$(call build-intermediate,$(base).$(ext)))) =20 +# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), +# and from include/config/auto.conf.cmd to detect the compiler upgrade. +export CC_VERSION_TEXT :=3D $(shell $(CC) --version 2>/dev/null | head -n = 1) + kconfig :=3D oldconfig config menuconfig defconfig allyesconfig allnoconfi= g \ nconfig xconfig gconfig savedefconfig listnewconfig olddefconfig \ randconfig $(notdir $(wildcard arch/$(SRCARCH)/configs/*_defconfig)) --=20 Anthony PERARD