Confused about /bigobj

I'm updating a program which previously got compiled with VC2005 (I'm compiling it now with VC2019). One of the source modules was fine with VS2005 but it gives me this compiler error with VS2019:-

Code:

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fatal error C1128: number of sections exceeded object file format limit: compile with /bigobj

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I'm also converting from a 32-bit build to 64-bit - so maybe that's the problem. Either way... how/where do I set /bigobj ? I've look in the Compiler Properties pages but I can't see anything obvious :confused:

Properties/C++/CommandLine. Add it to Additional Options.

Not all compiler options are in the properties pages - some (another is /J to make char default to unsigned rather than signed) have to be specifically set.

PS
For a list of all options, see https://docs.microsoft.com/en-us/cpp...?view=msvc-160

Thanks 2kaud, that seems to fix it. BTW... as it happens, the module I'm building is a DLL. At the moment, I've only specified /bigobj for that one source file. Should that be okay - or will I need to apply it to all the source files for that DLL?

The /bigobj applies to the number of sections in the generated .obj file. So /bigobj would usually be applied to the project properties - not an individual source property. However it shouldn't matter - as it will apply to the generated .obj for which the source file is used.