[9.0] libnethost no LTCG #113893
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[9.0] libnethost no LTCG #113893
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Tagging subscribers to this area: @vitek-karas, @agocke, @VSadov |
jeffschwMSFT
approved these changes
Mar 25, 2025
agocke
approved these changes
Mar 25, 2025
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Friendly reminder that code complete is on April 14th for the May Release. If you'd like to get this change included in that release, please get a Tactics approval and merge this PR before that date. |
Not that it changes anything, but just for the record, it's also important for the use case of non-Microsoft linkers such as Thanks for the fix! |
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Fixes Issue #113183
main PR #111805 (slimmed down for servicing)
Description
Ensure that libnethost isn't built with the
/LTCGflag, so users can use any version of MSVC to build their native .NET host using libnethost.Customer Impact
Users can't use the static libnethost unless they build their native host with the same compiler that we build .NET 9.0 with.
LTCG (link-time code-gen) requires the customer to use the exact same version of MSVC that we used if they want to build. We are reverting the flags to the old list (ensuring we don't specify LTCG for any object files in the libnethost static library). The only policy we have is that we can't put LTCG objects in any static library we ship
Regression
Yes, regressed in #102475
Testing
Locally validated that the libnethost static library doesn't have any files built with LTCG.
Risk
Low risk. Only affects users of libnethost.
Package authoring signed off?
IMPORTANT: If this change touches code that ships in a NuGet package, please make certain that you have added any necessary package authoring and gotten it explicitly reviewed.