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llvm: set LLVM_HOST_TRIPLE for cross-compilation

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The correct way to configure cmake for cross-compilation includes
setting the LLVM_HOST_TRIPLE as well.

Documentation Ref:
https://github.com/llvm/llvm-project/blob/llvmorg-19.1.6/llvm/docs/HowToCrossCompileLLVM.rst#configuring-cmake

This fixes bug when LLVM is cross-compiled for AAarch64 but it
was getting built with the triple of native build system instead of
the TARGET_SYS (aarch64-oe-linux) in my case.

`No available targets are compatible with triple "x86_64-unknown-linux-gnu"`

(From OE-Core rev: 19f649f47352f7e12508abd88a862e95979d152d)

Signed-off-by: Haseeb Ashraf <haseeb.ashraf@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Haseeb Ashraf
2025-01-25 10:41:18 +05:00
committed by Richard Purdie
parent e72d641a99
commit 6573c70f8b
1 changed files with 2 additions and 0 deletions
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meta/recipes-devtools/llvm/llvm_19.1.6.bb
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@@ -82,12 +82,14 @@ EXTRA_OECMAKE += "-DLLVM_ENABLE_ASSERTIONS=OFF \
EXTRA_OECMAKE:append:class-target = "\
-DCMAKE_CROSSCOMPILING:BOOL=ON \
-DLLVM_HOST_TRIPLE=${TARGET_SYS} \
-DLLVM_TABLEGEN=${STAGING_BINDIR_NATIVE}/llvm-tblgen${PV} \
-DLLVM_CONFIG_PATH=${STAGING_BINDIR_NATIVE}/llvm-config${PV} \
"
EXTRA_OECMAKE:append:class-nativesdk = "\
-DCMAKE_CROSSCOMPILING:BOOL=ON \
-DLLVM_HOST_TRIPLE=${SDK_SYS} \
-DLLVM_TABLEGEN=${STAGING_BINDIR_NATIVE}/llvm-tblgen${PV} \
-DLLVM_CONFIG_PATH=${STAGING_BINDIR_NATIVE}/llvm-config${PV} \
"