Most calls to `MaybeConvertToRelativePath` use one of our common work
directories (e.g. top of the build tree) as the local path. Add helpers
for each of the common cases to simplify and clarify call sites.
These fields are specified by our `P1689r3` paper, but are not actually
needed. The dependencies of the scanning results themselves can be
captured via normal depfile logic. Avoid saving this possibly-large
information in the scanning results. It is not needed by later steps.
Since commit fb18215904 (Ninja: clean ninja metadata once generated,
2019-05-13, v3.17.0-rc1~207^2) we recompact the ninja deps log during
regeneration. That does not make sense during a build, so skip it if we
are regenerating during a build.
This problem went unnoticed previously because on non-Windows platforms
the deps log is just overwritten again by the outer build. On Windows
platforms, recompaction during the build fails, but we did not actually
try to do that until commit 11f4259362 (Ninja: Clean metadata after
regen during build on Windows with 1.10.2+, 2020-11-30, v3.19.2~29^2~1).
Fixes: #21916
Ninja 1.11 and later uses UTF-8 on Windows when possible, and
includes a tool that reports the code page in use. Use this tool
to determine what encoding to write the Ninja files in.
Fixes: #21866
39cbbb59a5 ninja: add experimental infrastructure to generate gcc-format modmap files
791b4d26d6 ninja: add experimental infrastructure to generate modmap files with dyndep
4b23359117 ninja: Add experimental infrastructure for C++20 module dependency scanning
f814d3b3c6 cmNinjaTargetGenerator: use $OBJ_FILE for the object
b0fc2993e1 Treat the '.mpp' file extension as C++ code
988f997100 cmScanDepFormat: Fix name of our internal tool in parse errors
dacd93a2db ninja: De-duplicate version numbers required for ninja features
533386ca29 cmStandardLevelResolver: Factor out helper to capture stoi exceptions
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Acked-by: Shannon Booth <shannon.ml.booth@gmail.com>
Merge-request: !5562
The scan step may need to output additional information for the
compiler, not just the build tool. The modmap is assumed to be beside
the object output. Additional refactoring may open up a channel to
inform per-source paths to the dyndep rule in the future, but is not
done here.
Optionally enable this infrastructure through an undocumented
`CMAKE_EXPERIMENTAL_CXX_MODULE_DYNDEP` variable. Currently this is
experimental and intended for use by compiler writers to implement their
scanning tools. Warn as such when the feature is activated. Later when
compilers provide the needed scanning tools we can enable this variable
from our corresponding compiler information modules. It is never meant
to be set by project code.
When enabled, generate a build graph similar to what we use for Fortran
module dependencies. There are some differences needed because we can
scan dependencies without explicit preprocessing, and can directly
compile the original source afterward.
Co-Author: Ben Boeckel <ben.boeckel@kitware.com>
Remove the `cleandead` tool invocation added by commit fb18215904
(Ninja: clean ninja metadata once generated, 2019-05-13,
v3.17.0-rc1~207^2). The tool deletes files that were not previously
deleted by regenerating the build system. Also, there are use cases
where no-longer-generated files should not be removed, such as Qt's TS
files.
Fixes: #21549
73d1c78bf4 ci: update to use ninja 1.10.2
11f4259362 Ninja: Clean metadata after regen during build on Windows with 1.10.2+
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5555
Ninja 1.10.2 fixes support for `generator = 1` rules that run metadata
update commands during regeneration while a build is running. Update
the condition added by commit ccaa0bccc4 (Ninja: Do not clean metadata
when re-generating inside a running build, 2020-01-27,
v3.17.0-rc1~73^2) to remove our workaround when Ninja is new enough.
Fixes: #20274
The Ninja `cleandead` tool does not account for implicit outputs
discovered by `dyndep` bindings and can remove Fortran `.mod` files that
are still needed. Disable the `cleandead` step when using `dyndep`
bindings.
Fixes: #21406
Early versions of the Ninja Multi-Config generator required
CMAKE_CONFIGURATION_TYPES and friends to be cache variables in order
to support selecting the default config in cmake(1) --build. The
behavior of cmake(1) --build has since been updated to no longer
require this, and requiring these variables to be cache variables is
inconsistent with the other generators.
Read the variables as normal CMake variables like the other generators.
This does not require a policy, since the only scenario where this would
cause a breakage is one where the cache variable and the CMake variable
are explicitly set to different values, which doesn't make sense to do
anyway.
a9fd3a10 addressed the scenario where the depending target is a
utility target, but not the scenario where the dependent target is
a utility target. Account for this scenario.
Also add a Qt-specific test case.
Fixes: #21118
5ece12b7e4 gitlab-ci: add ISPC to the Fedora CI image
8976817d6d ISPC: Update help documentation to include ISPC
2368f46ba4 ISPC: Support building with the MSVC toolchain
e783bf8aa6 ISPC: Support ISPC header generation byproducts and parallel builds
34cc6acc81 Add ISPC compiler support to CMake
419d70d490 Refactor some swift only logic to be re-used by other languages
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !5065
INTERFACE libraries were created with the intention of collecting usage
requirements for use by other targets via `target_link_libraries`.
Therefore they were not allowed to have SOURCES and were not included in
the generated buildsystem. In practice, this has become limiting:
* Header-only libraries do have sources, they just do not compile.
Developers should be able to edit those sources (the header files)
in their IDE.
* Header-only libraries may need to generate some of their header
files via custom commands.
Some projects work around these limitations by pairing each interface
library with an `add_custom_target` that makes the header files and
custom commands appear in the generated buildsystem and in IDEs.
Lift such limitations by allowing INTERFACE libraries to have SOURCES.
For those with sources, add a corresponding build target to the
generated buildsystem.
Fixes: #19145
This allows for setting EXCLUDE_FROM_ALL, conditional on the build
configuration. However, only the Ninja Multi-Config generator supports
different property values per config. All other multi-config
generators will yield an error in that situation.
Fixes: #20923
