[libc++abi] Improve error message when libunwind is missing from LLVM_ENABLE_RUNTIMES #77991
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@llvm/pr-subscribers-libcxxabi Author: Louis Dionne (ldionne) ChangesFull diff: https://github.com/llvm/llvm-project/pull/77991.diff 1 Files Affected:
diff --git a/libcxxabi/CMakeLists.txt b/libcxxabi/CMakeLists.txt
index c62b05bf2feafc..9d8bfa548b0125 100644
--- a/libcxxabi/CMakeLists.txt
+++ b/libcxxabi/CMakeLists.txt
@@ -47,6 +47,9 @@ option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode.
option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." ON)
+if (LIBCXXABI_USE_LLVM_UNWINDER AND NOT "libunwind" IN_LIST LLVM_ENABLE_RUNTIMES)
+ message(FATAL_ERROR "LIBCXXABI_USE_LLVM_UNWINDER is set to ON, but libuwnind is not specified in LLVM_ENABLE_RUNTIMES.")
+endif()
option(LIBCXXABI_ENABLE_STATIC_UNWINDER "Statically link the LLVM unwinder." OFF)
option(LIBCXXABI_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON)
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I'll merge this since this has been widely requested. |
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I guess they needs I think patches like this needs to be landed like: This brakeage is too early. Leaving bots broken for a long time will likely hide other regression, which make hard for bot maintainers to pinpoint the cause. |
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Revert "[libc++abi] Improve error message when libunwind is missing from LLVM_ENABLE_RUNTIMES (llvm#77991)" Change-Id: Ie6dcb219cff4beac5b6cf6d9fafc5757cc7a08e3
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The only two bots I still see failing are: I already fixed the first one on llvm-zorg, and I can't find where the second one is defined, but the bot owner is aware of the problem. @vitalybuka Is there still a need to revert this? |
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…_ENABLE_RUNTIMES (llvm#77991) This doesn't actually prevent the build from failing, but it provides a better diagnostic that explains what is needed in order to fix the build. Fixes llvm#77846 Fixes llvm#77843 Change-Id: I4ad40d4c7ba2472ff75bf4c20cba1f9034507a75
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…_ENABLE_RUNTIMES (llvm#77991) This doesn't actually prevent the build from failing, but it provides a better diagnostic that explains what is needed in order to fix the build. Fixes llvm#77846 Fixes llvm#77843
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This doesn't actually prevent the build from failing, but it provides a better
diagnostic that explains what is needed in order to fix the build.
Fixes #77846
Fixes #77843