cmake --build: Use both inter- and intra-project parallelism with msbuild
Since !1962 (merged), cmake --build --parallel
has added two options to the msbuild command line:
-
/m
enables inter-project parallelism in msbuild. -
/p:CL_MPCount=1
suppresses intra-project parallelism in cl.
The latter was used to avoid O(N^2)
compilation threads on N
processors. In practice however, projects often have many source files
in a few targets, so --parallel
actually reduces parallelism.
Drop the latter option to restore intra-project parallelism.
Users can always add -- /p:CL_MPCount=1
themselves.
Fixes: #20564 (closed)