[PATCH] D142404: [docs] Prefer setting LLVM_HOST_TRIPLE instead of LLVM_DEFAULT_TARGET_TRIPLE and LLVM_TARGET_ARCH

[Martin Storsjö via Phabricator via llvm-commits]

mstorsjo created this revision.
mstorsjo added reviewers: phosek, peter.smith, beanz.
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mstorsjo requested review of this revision.
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Setting LLVM_HOST_TRIPLE propagates the information to a few more
places than if only setting LLVM_TARGET_ARCH and
LLVM_DEFAULT_TARGET_TRIPLE, while both of those settings get their
defaults implied from LLVM_HOST_TRIPLE if they're not overridden.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D142404

Files:
  llvm/docs/HowToCrossCompileLLVM.rst


Index: llvm/docs/HowToCrossCompileLLVM.rst
===================================================================
--- llvm/docs/HowToCrossCompileLLVM.rst
+++ llvm/docs/HowToCrossCompileLLVM.rst
@@ -43,8 +43,7 @@
  * ``-DCMAKE_SYSTEM_NAME=<target-system>``
  * ``-DCMAKE_INSTALL_PREFIX=<install-dir>``
  * ``-DLLVM_NATIVE_TOOL_DIR=<path-to-host-bin>``
- * ``-DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf``
- * ``-DLLVM_TARGET_ARCH=ARM``
+ * ``-DLLVM_HOST_TRIPLE=arm-linux-gnueabihf``
  * ``-DLLVM_TARGETS_TO_BUILD=ARM``
 
 Note: ``CMAKE_CROSSCOMPILING`` is always set automatically when ``CMAKE_SYSTEM_NAME`` is set. Don't put ``-DCMAKE_CROSSCOMPILING=TRUE`` in your options.


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