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| author | Craig Scott <craig.scott@crascit.com> | 2021-01-29 12:22:45 (GMT) |
|---|---|---|
| committer | Craig Scott <craig.scott@crascit.com> | 2021-02-04 20:33:38 (GMT) |
| commit | 17e5516e608ba5c9c1f2dfad3d64f8f90874f108 (patch) | |
| tree | ae0f88a262c3734cda45ee1040aee303e131d13d /Help | |
| parent | 4f3d1abbb4dca3d1e6b019471fa5d8be296492e3 (diff) | |
| download | CMake-17e5516e608ba5c9c1f2dfad3d64f8f90874f108.zip CMake-17e5516e608ba5c9c1f2dfad3d64f8f90874f108.tar.gz CMake-17e5516e608ba5c9c1f2dfad3d64f8f90874f108.tar.bz2 | |
FetchContent: Invoke steps directly and avoid a separate sub-build
The cost of setting up and executing a separate sub-build to do the
download, update and patch steps required for FetchContent population
can be significant with some platforms and CMake generators. Avoid the
sub-build altogether by invoking the step scripts directly.
Previously, if no generator was set (e.g. population was being done in
script mode), a generator needed to be available on the default PATH.
Since we no longer use a sub-build, this restriction is also now gone.
Fixes: #21703
Diffstat (limited to 'Help')
| -rw-r--r-- | Help/release/dev/fetchcontent-performance.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Help/release/dev/fetchcontent-performance.rst b/Help/release/dev/fetchcontent-performance.rst index 361c2b4..fcb68a1 100644 --- a/Help/release/dev/fetchcontent-performance.rst +++ b/Help/release/dev/fetchcontent-performance.rst @@ -5,3 +5,9 @@ fetchcontent-performance significantly refactored. The patch step gained support for using the terminal with a new ``USES_TERMINAL_PATCH`` keyword as a by-product of that work. +* The :module:`FetchContent` module no longer creates a separate + sub-build to implement the content population. It now invokes + the step scripts directly from within the main project's + configure stage. This significantly speeds up the configure + phase when the required content is already populated and + up-to-date. |