From: Roger Pau Monné <roger.pau@citrix.com>
Date: Tue, 7 Jun 2022 12:05:06 +0000 (+0200)
Subject: kconfig: detect LD implementation
X-Git-Tag: archive/raspbian/4.16.2-1+rpi1^2~34^2~65
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=3754bd128d1a6b3d5864d1a3ee5d27b67d35387a;p=xen.git

kconfig: detect LD implementation

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
---

diff --git a/xen/Kconfig b/xen/Kconfig
index bcbd2758e5..0c89afd50f 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)