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b=iV+s8dZQGxq8gKdV5CExd25F+91htAFnn2z6Y67EU1y7KyFEaD7XsL5/oj1VOdzKsYlPOBGCcOMiYhEXC0sZ+DpIiU+0qYp9ytPUe55ZZf4NgxwY243uuckc6t/wXjE8VZlwk1voiWQF179+4x0zDD5/45KdylyYUSV6RfTG9FODXVhKpmbuuAeCJcRdlNPc255DXyTzMJK1WNMIEQlSbHn37a69knWjX0YZTd0qrHGYJ/DCVyndadEbQCqIJdlYR3r68aDvboKRJ6rX78Y11XTxkW4YJOHdxjzyO62jfaLxi+YL+mU1OfN3/TC06tmAfpwlnqj3tdjXHWNqlypXEA== From: Volodymyr Babchuk To: "xen-devel@lists.xenproject.org" CC: Volodymyr Babchuk , Andrew Cooper , Jan Beulich , Julien Grall , Stefano Stabellini Subject: [PATCH 3/5] build: arm64: provide -target and -march if using clang Thread-Topic: [PATCH 3/5] build: arm64: provide -target and -march if using clang Thread-Index: AQHbQgDiBM9r6Gu0CEmbvf51boI0mQ== Date: Fri, 29 Nov 2024 01:49:10 +0000 Message-ID: <20241129014850.2852844-4-volodymyr_babchuk@epam.com> References: <20241129014850.2852844-1-volodymyr_babchuk@epam.com> In-Reply-To: <20241129014850.2852844-1-volodymyr_babchuk@epam.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.47.0 authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=epam.com; 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This makes cross-compilation much easier, because clang accept this parameters regardless of host platform. Basically, make XEN_TARGET_ARCH=arm64 clang=y llvm=y will behave in the same way if building Xen on x86, or on arm64 or on any other platform. -march is required because with default value, clang will not recognize EL2 registers. Signed-off-by: Volodymyr Babchuk --- config/arm64.mk | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/config/arm64.mk b/config/arm64.mk index c4662f67d0..97eb9a82e7 100644 --- a/config/arm64.mk +++ b/config/arm64.mk @@ -5,6 +5,10 @@ CONFIG_XEN_INSTALL_SUFFIX := CFLAGS += #-marm -march= -mcpu= etc +ifeq ($(clang),y) +CFLAGS += -target aarch64 -march=armv8-a +endif + # Use only if calling $(LD) directly. LDFLAGS_DIRECT += -EL