Compile error in VS2015 when compiling unit-conversions.cpp

[sonulohani]

When i compile unit-conversions.cpp with VS 2015 compiler, I get this error:-

"unit-conversions.cpp : fatal error C1128: number of sections exceeded object file format limit: compile with /bigobj" .

I think we should configure this in cmake to compile this file with /bigobj.

VS 2015 configuration:-
Debug mode
Platform :- x64

Here is the screenshot of the same:-

[nlohmann]

That is strange, because it works on AppVeyor (MSVC 19.0.24215.1) without issue:

• configuration file: https://github.com/nlohmann/json/blob/develop/appveyor.yml
• last output: https://ci.appveyor.com/project/nlohmann/json/build/job/qk7oe3c36hnm0bd3

[sonulohani]

I compiled with VS2017 and it's compiling perfectly fine with this. I don't know why its throwing error with VS2015.

[nlohmann]

Just for reference, which MSVC2015 version are you using?

[nlohmann]

@sonulohani As I never experienced this issue with our CI setup, could you please provide your used MSVC version?

[sonulohani]

@nlohmann sure, I will post the MSVC version by this Monday. Sorry for the delay.

[sonulohani]

Hi @nlohmann ,
Here are the version detail of my MSVC 2015 compiler (got it from cmake):-
Selecting Windows SDK version to target Windows 10.0.15063.
The CXX compiler identification is MSVC 19.0.24215.1

BTW i am still getting this compiler error. I am using develop branch.

[nlohmann]

This is strange - we use exactly this compiler on AppVeyor, see https://ci.appveyor.com/project/nlohmann/json/build/2816/job/48rag9jhyp2je364?fullLog=true.

The difference may be that we build in Release mode. Could you try this please?

[sonulohani]

Hi @nlohmann ,

Yes you're right. The problem is in Debug mode. In release mode the build is working fine. Please take a look at the screenshot. We might need to check the same for VS 2017.

[nlohmann]

Ok, then we need to set /bigobj for Debug builds. Could you please replace test/CMakeLists.txt with CMakeLists.txt and try building a Debug build?

[sonulohani]

hi @nlohmann ,

Okay i will do that.

[nlohmann]

@sonulohani Did you have a chance to test the fixed CMakeLists file from #1114 (comment)?