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Set CMAKE_CROSSCOMPILING and CMAKE_SYSTEM_NAME when cross compiling with cmake #25477

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expipiplus1 opened this issue May 3, 2017 · 3 comments
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Set CMAKE_CROSSCOMPILING and CMAKE_SYSTEM_NAME when cross compiling with cmake #25477

expipiplus1 opened this issue May 3, 2017 · 3 comments
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6.topic: cross-compilation Building packages on a different platform than they will be used on
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19.03

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@expipiplus1
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Issue description

CMAKE_CROSSCOMPILING is not set when a cross compile is in progress.

https://cmake.org/cmake/help/v3.0/variable/CMAKE_CROSSCOMPILING.html

This is necessary for several packages, such as LLVM, to cross compile correctly.

When buildPlatform != hostPlatform the additional cmake argument -DCMAKE_CROSSCOMPILING=True should be used
@aneeshusa
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@Ericson2314 mentioned this may be more elegant with NixOS/rfcs#13.

@Ericson2314 Ericson2314 added the 6.topic: cross-compilation Building packages on a different platform than they will be used on label May 18, 2017
@Ericson2314 Ericson2314 modified the milestone: 17.09 Jun 25, 2017
@matthewbauer matthewbauer modified the milestones: 17.09, 18.09 Apr 17, 2018
@dtzWill dtzWill mentioned this issue May 18, 2018
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@matthewbauer matthewbauer modified the milestones: 18.09, 19.03 Oct 1, 2018
@matthewbauer
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Okay closing #47192 in favor of this one.

@matthewbauer matthewbauer mentioned this issue Oct 1, 2018
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@Ericson2314 Ericson2314 changed the title Set CMAKE_CROSSCOMPILING when cross compiling with cmake Set CMAKE_CROSSCOMPILING and CMAKE_SYSTEM_NAME when cross compiling with cmake Oct 1, 2018
@expipiplus1
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Thanks!

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6.topic: cross-compilation Building packages on a different platform than they will be used on
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@matthewbauer @expipiplus1 @Ericson2314 @aneeshusa