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From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: buildroot@buildroot.org
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: [Buildroot] [PATCH 1/2] arch/Config.in.x86: add option for -march=x86-64
Date: Sun,  9 Jan 2022 09:01:22 +0100	[thread overview]
Message-ID: <20220109080124.2271241-1-thomas.petazzoni@bootlin.com> (raw)

We already have support for a wide range of x86-64 CPUs, but we don't
have any option to build for the most generic possible x86-64 CPU, as
made available by the -march=x86-64 GCC option.

This commit makes this option available in Buildroot.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 arch/Config.in.x86 | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/Config.in.x86 b/arch/Config.in.x86
index 7aae3cafb7..794d808d96 100644
--- a/arch/Config.in.x86
+++ b/arch/Config.in.x86
@@ -81,6 +81,16 @@ config BR2_x86_prescott
 	select BR2_X86_CPU_HAS_SSE
 	select BR2_X86_CPU_HAS_SSE2
 	select BR2_X86_CPU_HAS_SSE3
+config BR2_x86_x86_64
+	bool "x86-64"
+	select BR2_X86_CPU_HAS_MMX
+	select BR2_X86_CPU_HAS_SSE
+	select BR2_X86_CPU_HAS_SSE2
+	help
+	  This option corresponds to -march=x86-64, documented as a
+	  "Generic CPU with 64-bit extensions" by the GCC
+	  documentation. It is a 64-bit CPU with MMX, SSE and SSE2
+	  support.
 config BR2_x86_nocona
 	bool "nocona"
 	select BR2_X86_CPU_HAS_MMX
@@ -281,6 +291,7 @@ config BR2_GCC_TARGET_ARCH
 	default "pentium3"	if BR2_x86_pentium3
 	default "pentium4"	if BR2_x86_pentium4
 	default "prescott"	if BR2_x86_prescott
+	default "x86-64"	if BR2_x86_x86_64
 	default "nocona"	if BR2_x86_nocona
 	default "core2"		if BR2_x86_core2
 	default "corei7"	if BR2_x86_corei7
-- 
2.33.1

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             reply	other threads:[~2022-01-09  8:01 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-09  8:01 Thomas Petazzoni [this message]
2022-01-09  8:01 ` [Buildroot] [PATCH 2/2] arch/Config.in.x86: add support for x86-64-v2, x86-64-v3, x86-64-v4 Thomas Petazzoni
2022-01-09 10:36   ` Yann E. MORIN
2022-01-09 10:46     ` Romain Naour
2022-01-09 10:33 ` [Buildroot] [PATCH 1/2] arch/Config.in.x86: add option for -march=x86-64 Yann E. MORIN

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