[llvm-dev] how to enable exceptions for one component
Davis, Alan via llvm-dev
llvm-dev at lists.llvm.org
Mon Jan 13 07:18:40 PST 2020
For the record, I had to also set/reset LLVM_REQUIRES_RTTI in the same way.
From: Shoaib Meenai [mailto:smeenai at fb.com]
Sent: Monday, January 13, 2020 1:01 AM
To: Davis, Alan; LLVM Developers Mailing List
Subject: [EXTERNAL] Re: [llvm-dev] how to enable exceptions for one component
LLVM_ENABLE_EH is a global option, not a target property. For a single target, it’s more appropriate to use LLVM_REQUIRES_EH, which is also a variable you’ll need to set before calling add_llvm_component_library. You can do something like
The implementation for this functionality lives in llvm/cmake/modules/AddLLVM.cmake , where you can see what effect LLVM_REQUIRES_EH has.
From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of "Davis, Alan via llvm-dev" <llvm-dev at lists.llvm.org>
Reply-To: "Davis, Alan" <adavis at ti.com>
Date: Sunday, January 12, 2020 at 5:09 PM
To: LLVM Developers Mailing List <llvm-dev at lists.llvm.org>
Subject: [llvm-dev] how to enable exceptions for one component
I’d like to enable exceptions for a single target-specific LLVM component which is built as library. That is, I’d like to allow it to throw exceptions to its (non-LLVM) client to signal errors. In the CMakeLists.txt for the component, I tried:
set_property(TARGET LLVMTargetLibrary PROPERTY LLVM_ENABLE_EH ON)
But it still compiles with –fno-exceptions.
Thanks for any advice.
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