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From 3754bd128d1a6b3d5864d1a3ee5d27b67d35387a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= <roger.pau@citrix.com>
Date: Tue, 7 Jun 2022 14:05:06 +0200
Subject: [PATCH 15/51] kconfig: detect LD implementation
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Detect GNU and LLVM ld implementations. This is required for further
patches that will introduce diverging behaviour depending on the
linker implementation in use.
Note that LLVM ld returns "compatible with GNU linkers" as part of the
version string, so be on the safe side and use '^' to only match at
the start of the line in case LLVM ever decides to change the text to
use "compatible with GNU ld" instead.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Michal Orzel <michal.orzel@arm.com>
Acked-by: Julien Grall <jgrall@amazon.com>
master commit: c70c4b624f85f7d4e28c70a804a0a3f20d73092b
master date: 2022-05-02 08:50:39 +0200
---
xen/Kconfig | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/xen/Kconfig b/xen/Kconfig
index bcbd2758e5d3..0c89afd50fcf 100644
--- a/xen/Kconfig
+++ b/xen/Kconfig
@@ -23,6 +23,12 @@ config CLANG_VERSION
int
default $(shell,$(BASEDIR)/scripts/clang-version.sh $(CC))
+config LD_IS_GNU
+ def_bool $(success,$(LD) --version | head -n 1 | grep -q "^GNU ld")
+
+config LD_IS_LLVM
+ def_bool $(success,$(LD) --version | head -n 1 | grep -q "^LLD")
+
# -fvisibility=hidden reduces -fpic cost, if it's available
config CC_HAS_VISIBILITY_ATTRIBUTE
def_bool $(cc-option,-fvisibility=hidden)
--
2.35.1
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