Even though Makefile generators pass source files and include
directories by absolute path to the compiler, the compiler may generate
depfile paths relative to the current working directory. For example,
`ccache` with `CCACHE_BASEDIR` may transform paths this way. When
reading a depfile, convert relative dependencies to absolute paths
before placing them in `compiler_depend.make`, which is later evaluated
in the top-level build directory.
Fixes: #22364
In 5e941a545b (ExternalProject: Ensure git fetch if updating to hash we
don't have yet, 2021-05-09), the form ${ref}^{commit} was used to ensure
the ref was treated as a commit. When running under a MSYS2 or
Cygwin shell, the {commit} part can be translated by the shell, leaving it as
${ref}^commit, which git doesn't understand. Use the equivalent but
safer form ${ref}^0, since it won't be subject to the shell substitution
issue.
Fixes: #22299
Running `xcode -version` on an ARM box prints content to stderr:
objc[...]: Class ... is implemented in both...
One of the two will be used. Which one is undefined.
Capture and parse only stdout. Otherwise we might configure test
behavior for the wrong version of Xcode.
Since commit 9054cd05e6 (VS: Add flag table entries for '/external:W*'
flags in VS 16.10, 2021-05-28, v3.20.4~10^2) we map flags to the
`ExternalWarningLevel` element. VS 16.9 does not support that element,
but its `cl` compiler does support the `/external:W*` flags. Filter out
the flag table entry on older VS versions.
Fixes: #22308
Use the same `cmLinkLineComputer` subclass as the generator does. This
affects the base directory from which relative paths are computed.
Fixes: #22301
In commit 8293064760 (FindBoost: Add support for Boost 1.75, 2021-02-03,
v3.19.5~9^2) the dependencies of the json component were added, but the
header listing was left out.
Microsoft intends to ship the final C++20 flag in VS 16.11 albeit with a few
parts missing due planned ABI breaking changes.
The current 16.11 Preview 1 toolchain version is 19.29.30129.3, so let's
restrict based on that.
Extend the fix from commit 67e2130c96 (Makefiles: Fix
CMAKE_EXPORT_COMPILE_COMMANDS crash with custom compile rule,
2020-11-20, v3.19.1~8^2) to work for the `<FLAGS>` placeholder too.
Also fix the test case to actually enable `EXPORT_COMPILE_COMMANDS`
on the test target.
Fixes: #22261
Extend the table of special cases from commit 58a50a3a0a (VS: Fix '-T
version=14.28' under VS 16.9, 2021-03-11, v3.19.7~1^2~1). Add a special
case for the name VS 16.11 will use for VS 16.10's default toolset, so
that it can be used with VS 16.10 too.
Using '-T version=14.29.16.10' actually works under VS 16.10 without
this change, but only because there is only one 14.29 toolset so the
two-component prefix happens to match the right one. Make it explicit.
Issue: #21922
1cb65e680d (ExternalProject: Prevent the noisy detached head
messages on checkout, 2021-01-17) unconditionally added the advice.detachedHead
git config setting, but it requires git 1.7.7 or later. Since it isn't fatal to not
have it, just noisier, only add it when it is supported.
Fixes: #22206
Marc Chevrier