From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753999AbeCYSLO (ORCPT ); Sun, 25 Mar 2018 14:11:14 -0400 Received: from mail.kmu-office.ch ([178.209.48.109]:54015 "EHLO mail.kmu-office.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753831AbeCYSKF (ORCPT ); Sun, 25 Mar 2018 14:10:05 -0400 From: Stefan Agner To: linux@armlinux.org.uk, ard.biesheuvel@linaro.org, arnd@arndb.de Cc: robin.murphy@arm.com, nicolas.pitre@linaro.org, marc.zyngier@arm.com, behanw@converseincode.com, keescook@chromium.org, Bernhard.Rosenkranzer@linaro.org, mka@chromium.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stefan Agner Subject: [PATCH v2 2/6] efi/libstub/arm: add support for building with clang Date: Sun, 25 Mar 2018 20:09:55 +0200 Message-Id: <20180325180959.28008-3-stefan@agner.ch> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180325180959.28008-1-stefan@agner.ch> References: <20180325180959.28008-1-stefan@agner.ch> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use cc-options call for -mno-single-pic-base since the option is not available in clang. LLVM/clang always assumes a fixed displacement between text/data and hence uses PC relative addressing. Signed-off-by: Stefan Agner --- drivers/firmware/efi/libstub/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 7b3ba40f0745..2bf69cca0d87 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -13,7 +13,8 @@ cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ -O2 \ cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \ - -fno-builtin -fpic -mno-single-pic-base + -fno-builtin -fpic \ + $(call cc-option,-mno-single-pic-base,) cflags-$(CONFIG_EFI_ARMSTUB) += -I$(srctree)/scripts/dtc/libfdt -- 2.16.2 From mboxrd@z Thu Jan 1 00:00:00 1970 From: stefan@agner.ch (Stefan Agner) Date: Sun, 25 Mar 2018 20:09:55 +0200 Subject: [PATCH v2 2/6] efi/libstub/arm: add support for building with clang In-Reply-To: <20180325180959.28008-1-stefan@agner.ch> References: <20180325180959.28008-1-stefan@agner.ch> Message-ID: <20180325180959.28008-3-stefan@agner.ch> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Use cc-options call for -mno-single-pic-base since the option is not available in clang. LLVM/clang always assumes a fixed displacement between text/data and hence uses PC relative addressing. Signed-off-by: Stefan Agner --- drivers/firmware/efi/libstub/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 7b3ba40f0745..2bf69cca0d87 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -13,7 +13,8 @@ cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ -O2 \ cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \ - -fno-builtin -fpic -mno-single-pic-base + -fno-builtin -fpic \ + $(call cc-option,-mno-single-pic-base,) cflags-$(CONFIG_EFI_ARMSTUB) += -I$(srctree)/scripts/dtc/libfdt -- 2.16.2