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
4318e8ed35 gitlab-ci: add iwyu job
0866b9253b gitlab-ci: add initial clang-tidy build
0a5bcf97b9 gitlab-ci: add scripts for use by CI
960158b90d ci: add scripts to download build tools
6af91c7c4d ci: add an image for Debian 10
68903ae238 ci: add a Docker container for building CMake
3ac24a8a6e cmFunctionBlocker: include missing header
b745b8fd36 IWYU: mark includes needed for assert statements as needed
...
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4643
properties LINK_OPTIONS and INTERFACE_LINK_OPTIONS are propagated
to the device link step.
To control which options are selected for normal link and device link steps,
the $<DEVICE_LINK> and $<HOST_LINK> generator expressions can be used.
Fixes: #18265
a4173ef165 Tests: Enable coverage of special chars in include dirs for Makefiles
d74e651b78 Makefiles: Re-implement makefile target path escaping and quoting
031bfaa865 Makefiles: Factor out makefile target path escaping and quoting
ca343dad07 Makefiles: Convert paths with '#' on command-lines to short path on Windows
af7de05853 Makefiles: Do not use '\#' escape sequence with Windows-style make tools
1639ee70ef cmDepends: Update types to always use a Makefile generator
413d26030f cmGlobalNinjaGenerator: Remove outdated comment
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4605
Since commit fbf7a92975 (Makefile: Handle '#' in COMPILE_OPTIONS,
2014-08-12, v3.1.0-rc1~174^2) we escape `#` as `\#` in `flags.make`
variable assignments so that they are not treated as a comment.
Windows-style make tools like NMake do not interpret backslashes
in that way. Other means will be needed to handle `#` in contexts
where it is even possible. The test suite is not covering this
for NMake anyway, and actually has a workaround in `Tests/TryCompile`
for the old behavior, which we can now update.
The `std::endl` manupulator, except inserting `\n` character, also
performs `os.flush()`, which may leads to undesired effects (like
disk I/O in the middle of forming data strings). For the
`std::stringstream` it also has no meaning.
Since commit f6f4eb0907 (clang-tidy: Add driver mode argument,
2020-01-19) the `clang-tidy` tool rejects the new option:
Unknown command line argument '--driver-mode=g++'.
This is because we are adding the flag before the main compiler
command-line. Encode it with `--extra-arg-before=` so that `clang-tidy`
knows it is supposed to be part of the compiler command.
Suggested-by: Hanjiang Yu
`clang-tidy` does not infer driver mode if it is not provided with a
JSON compilation database. This is exactly the way cmake launches it.
Hence clang-tidy will only use the default driver mode. Add an explicit
driver mode argument to avoid this.
Teach the Makefile generator to scan the implicit dependencies of PCH
creation. When a header named by `target_precompile_headers` changes
the corresponding PCH must be rebuilt and all consumers recompiled.
Fixes: #19830
cmGeneratorExpression::Evaluate is a shortcut when only the evaluated string is
needed or an instance of cmCompiledGeneratorExpression cannot be cached.
Fixes: #19686
The quiet flag is false for all but one call to Evaluate. Make the quiet flag
a setter of cmCompiledGeneratorExpression to be able to remove it from the
Evaluate function signature.
Evaluate and expand generator expressions in byproducts of custom commands.
Note that it is still not possible to use generator expressions in byproducts
of the commands `add_custom_command` and `add_custom_target`. These commands
still reject the input. This is a preparation step for OUTPUT generator
expression support.
Issue: #12877
dca9c33abc Tests: Remove old IPO test
c856d4556b bindexplib: supporting llvm bitcode formats using llvm-nm
079b8e2916 Clang: prefer lld-link over link.exe
6e3655db2c Clang: add LTO support for GNU-command line clang on windows
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3527
