[PATCH] D84022: [flang] Fix multi-config generator builds.

[David Truby via Phabricator via llvm-commits]

DavidTruby added a comment.

In D84022#2162603 <https://reviews.llvm.org/D84022#2162603>, @sscalpone wrote:

> Hi David, what is a multi-config generator build?  And how do I try it?


Some CMake generators allow you to have multiple build configurations in the same build directory: e.g. you can have a single build directory and CMake line but a separate Debug and Release build in that directory. This is the only supported configuration for msbuild on Windows.
If you have a very recent cmake (3.17+) you can try this on Linux with Ninja with the -G"Ninja Mutli-Config" configuration option (instead of e.g. -GNinja). You can then build with: cmake --build . --config Debug, and cmake --build . --config Release, from the same cmake build directory.
This is of course not necessary on Linux, but I've been trying it out and am pre-emptively trying to fix this for when we move to support platforms where multi-config generators are the only option.


Repository:
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https://reviews.llvm.org/D84022