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Appveyor builds fail randomly #62

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vitaut opened this issue Aug 4, 2015 · 4 comments
Closed

Appveyor builds fail randomly #62

vitaut opened this issue Aug 4, 2015 · 4 comments

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@vitaut
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vitaut commented Aug 4, 2015

The errors occur in different projects, but always when including arith.h:

    96>c:\projects\mp\src\asl\solvers\asl.h(28): fatal error C1083: Cannot open include file: 'arith.h': No such file or directory [C:\projects\mp\src\asl\asl-core-dynrt.vcxproj]

Looks like the problem with a custom build step that generates arith.h.
@vitaut
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vitaut commented Aug 4, 2015

MSBuild is running custom build steps multiple times as indicated by the lines

Writing arith.h

so the error might be caused by race conditions when two processes (build is parallel) are trying to rebuild arith.h.

@vitaut
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vitaut commented Aug 4, 2015

Running msbuild with /v:diag gives this:

Forcing rebuild of all source files due to missing command TLog "C:\projects\mp\Win32\Debug\ALL_BUILD\ALL_BUILD.tlog\custombuild.command.1.tlog". (TaskId:2453)

@vitaut
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vitaut commented Aug 4, 2015

Some information about using generated files in two different targets: http://www.cmake.org/pipermail/cmake/2008-October/024492.html

vitaut added a commit that referenced this issue Aug 4, 2015
@vitaut
Use a custom target for arith.h
6710a59 
because including a file generated by a custom command in more
than one target may result in it being generated multiple times
in a parallel build which doesn't work reliably in msbuild (#62).
See also http://www.cmake.org/pipermail/cmake/2008-October/024492.html
vitaut added a commit that referenced this issue Aug 4, 2015
@vitaut
Remove arith.h from the amplodbc target
00dc557 
arith.h should only be included in the target of the same name (#62)
@vitaut
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vitaut commented Aug 4, 2015

Fixed in 6710a59 & 00dc557.

@vitaut vitaut closed this as completed Aug 4, 2015
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@vitaut