Installation error

[junc...@gmail.com]

Hello, 

I was trying to install or tools by source in C++, 

When I run tools\make cc,   it ran a while and then ended with the following error:

.....

ON_WARNINGS to acknowledge that you have received this warning.

        with

        [

            IntegerType=int

        ]

.\ortools\graph\max_flow.cc(927): error C2374: 'kMaxFlowQuantity': redefinition; multiple initialization

.\ortools\graph\max_flow.cc(927): note: see declaration of 'kMaxFlowQuantity'

.\ortools\graph\max_flow.cc(928): note: while compiling class template static data member 'const operations_research::FlowQuantity operations_research::GenericMaxFlow<operations_research::SimpleMaxFlow::Graph>::kMaxFlowQuantity'

.\ortools\graph\max_flow.cc(78): note: see reference to class template instantiation 'operations_research::GenericMaxFlow<operations_research::SimpleMaxFlow::Graph>' being compiled

make: *** [makefiles/Makefile.gen.mk:1156: objs/graph/max_flow.obj] Error 2

Can someone help? Thanks!

J

[Mizux Seiha]

which version are you using ? which platform ?

my guess it is the MS Visual Studio 2019 pedantic issue fixed few months ago...

Please, can you cherry pick this patch ?
https://github.com/google/or-tools/commit/da45c9da3ca0eab720ac901ef376f9b87eb6c58d#diff-ca7983ae552801a7a5e9379d97f565e9047805b34d0306c3811ffb570feeb8e7

and (reindent)
https://github.com/google/or-tools/commit/da45c9da3ca0eab720ac901ef376f9b87eb6c58d#diff-ca7983ae552801a7a5e9379d97f565e9047805b34d0306c3811ffb570feeb8e7

[junc...@gmail.com]

I am using VS 2019,  on Windows 10 Pro

The link shows how to modify the file:    ortools/graph/max_flow.cc  and max_flow.h ?

What does  "and (reindent)" mean?

[junc...@gmail.com]

Ok, I think it worked, finished compilation, finished testing, thanks!