[cfe-dev] [LLVMdev] Windows debug builds require /bigobj

[Reid Kleckner]

Mmmm, delicious template instantiation. This has come up before, and the
solution was to reduce the complexity of the template to avoid follow-on
instantiations like SmallVector<T>.


On Tue, Aug 26, 2014 at 6:57 AM, Oliver Stannard <oliver.stannard at arm.com>
wrote:

> Hi all,
>
>
>
> Our windows debug builds of clang have started failing with this error
> message:
>
> …snip…\llvm\tools\clang\lib\ASTMatchers\Dynamic\Registry.cpp : fatal error
> C1128: number of sections exceeded object file format limit : compile with
> /bigobj
> […snip…\llvm\tools\clang\lib\ASTMatchers\Dynamic\clangDynamicASTMatchers.vcxproj]
>
>
>
> This is building the debug configuration using the MSVC from Visual Studio
> Pro 2012 update 4, the release build of the same source succeeded. The
> source used was LLVM/clang trunk as of about 0500 UTC. The build of the
> source from the same time a day before succeeded.
>
>
>
> The error is caused by one object file which would have to contain more
> than 2^16 sections. Adding /bigobj should fix this, but should LLVM be able
> to build without this option?
>
>
>
> The buildbots did not catch this because it only occurs for debug builds.
>
>
>
> Thanks,
>
> Oliver
>
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