[llvm-dev] LLVM Build Error: Target object too big

[Neil Nelson via llvm-dev]

It has been a good number of years here since running Cygwin or Mingw 
(better) under Windows. Eventually used a free copy of VMWare (there are 
likely other options now) to create a Linux VM under Windows. You can 
then choose most any Linux distribution and click back and forth between 
Windows and Linux.

Regards, Neil Nelson

On 7/30/19 11:48 AM, Reid Kleckner via llvm-dev wrote:
> On Tue, Jul 30, 2019 at 8:30 AM Clint Banis via llvm-dev 
> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
>
>     What I've tried so far:
>         CFLAGS="-Wa,-mbig-obj" make
>
>     But still same error.
>
>
> I think this is the correct solution, but putting CFLAGS into the 
> environment while running make or re-running cmake isn't enough to get 
> flags through to the compiler. I'd recommend doing something like 
> `make 
> VERBOSE=1 lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o` to 
> extract the single failing compile command, manually add 
> -Wa,-mbig-obj, rerun, and see if the problem goes away.
>
> Lastly, assuming that fixes PassBuilder.cpp.o, you'll need to enable 
> it globally. We already enable it for mingw here:
> http://llvm-cs.pcc.me.uk/cmake/modules/HandleLLVMOptions.cmake#351
> We can definitely tweak those conditions to include Cygwin as the 
> FIXME says, but you can see that obviously nobody has built LLVM this 
> way for quite some time. Expect to run into more issues. Consider 
> switching to mingw or mvsc if possible.
>
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