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llvm: remove LLVM_LDFLAGS from llvm-config --ldflags output

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On native OE builds the LLVM_LDFLAGS gets a lot of extra flags which may
depend on exact build dir and as such be inappropriate to binaries
shared through sstate-cache. It is not possible to override this
behaviour in llvm-config since crossscripts are not being used for
native builds. Ignore LLVM_LDFLAGS for native builds.

(From OE-Core rev: a93d2bdf5c0cf1c2c08d99fd4ccd8d1aae0e0ba5)

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Dmitry Baryshkov 2025-04-10 05:54:45 +03:00 committed by Richard Purdie
parent 2ecf7ab469
commit d41b5391ab
2 changed files with 36 additions and 0 deletions
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34
meta/recipes-devtools/llvm/llvm/0001-llvm-config-remove-LLVM_LDFLAGS-from-ldflags-output.patch Normal file
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@ -0,0 +1,34 @@
From caff2482f786dd7fd5f1f46f2667f7ed847cb8f8 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Date: Wed, 2 Apr 2025 17:05:17 +0300
Subject: [PATCH] llvm-config: remove LLVM_LDFLAGS from --ldflags output
On native OE builds the LLVM_LDFLAGS gets a lot of extra flags which may
depend on exact build dir and as such be inappropriate to binaries
shared through sstate-cache. It is not possible to override this
behaviour in llvm-config since crossscripts are not being used for
native builds. As a OE-specific modification ignore LLVM_LDFLAGS for
native builds.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Upstream-Status: Inappropriate [OE-Specific]
---
llvm/tools/llvm-config/llvm-config.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/llvm/tools/llvm-config/llvm-config.cpp b/llvm/tools/llvm-config/llvm-config.cpp
index d5b76b1bb6c1..29f7c2eaa419 100644
--- a/llvm/tools/llvm-config/llvm-config.cpp
+++ b/llvm/tools/llvm-config/llvm-config.cpp
@@ -529,7 +529,7 @@ int main(int argc, char **argv) {
OS << ActiveIncludeOption << ' ' << LLVM_CXXFLAGS << '\n';
} else if (Arg == "--ldflags") {
OS << ((HostTriple.isWindowsMSVCEnvironment()) ? "-LIBPATH:" : "-L")
- << ActiveLibDir << ' ' << LLVM_LDFLAGS << '\n';
+ << ActiveLibDir << '\n';
} else if (Arg == "--system-libs") {
PrintSystemLibs = true;
} else if (Arg == "--libs") {
--
2.39.5

2
meta/recipes-devtools/llvm/llvm_20.1.2.bb
View File

@ -32,6 +32,8 @@ SRC_URI[sha256sum] = "f0a4a240aabc9b056142d14d5478bb6d962aeac549cbd75b809f549924
UPSTREAM_CHECK_URI = "https://github.com/llvm/llvm-project"
UPSTREAM_CHECK_REGEX = "llvmorg-(?P<pver>\d+(\.\d+)+)"
SRC_URI:append:class-native = " file://0001-llvm-config-remove-LLVM_LDFLAGS-from-ldflags-output.patch"
S = "${WORKDIR}/llvm-project-${PV}.src"
OECMAKE_SOURCEPATH = "${S}/llvm"