* Add preliminary support for the CompCert C Compiler
The intention is to use this with the picolibc, so some GCC flags are
automatically filtered. Since CompCert uses GCC is for linking, those
GCC-linker flags which are used by picolibc, are automatically prefixed
with '-WUl', so that they're passed to GCC.
Squashed commit of the following:
commit 4e0ad66dca9de301d2e41e74aea4142afbd1da7d
Author: Sebastian Meyer <meyer@absint.com>
Date: Mon Aug 31 14:20:39 2020 +0200
remove '-fall' from default arguments, also filter -ftls-model=.*
commit 41afa3ccc62ae72824eb319cb8b34b7e6693cb67
Author: Sebastian Meyer <meyer@absint.com>
Date: Mon Aug 31 14:13:55 2020 +0200
use regex for filtering ccomp args
commit d68d242d0ad22f8bf53923ce849da9b86b696a75
Author: Sebastian Meyer <meyer@absint.com>
Date: Mon Aug 31 13:54:36 2020 +0200
filter some gcc arguments
commit 982a01756266bddbbd211c54e8dbfa2f43dec38f
Author: Sebastian Meyer <meyer@absint.com>
Date: Fri Aug 28 15:03:14 2020 +0200
fix ccomp meson configuration
commit dce0bea00b1caa094b1ed0c6c77cf6c12f0f58d9
Author: Sebastian Meyer <meyer@absint.com>
Date: Thu Aug 27 13:02:19 2020 +0200
add CompCert to meson (does not fully work, yet)
* remove unused import and s/cls/self/
fixes the two obvious LGTM warnings
* CompCert: Do not ignore unsupported GCC flags
Some are safe to ignore, however, as per
https://github.com/mesonbuild/meson/pull/7674, they should not be
ignored by meson itself. Instead the meson.build should take care to
select only those which are actually supported by the compiler.
* remove unused variable
* Only add arguments once.
* Apply suggestions from code review
Co-authored-by: Dylan Baker <dylan@pnwbakers.com>
* Remove erroneous ' ' from '-o {}'.format()
As noticed by @dcbaker
* added release note snippet for compcert
* properly split parameters
As suggested by @dcbaker, these parameters should be properly split into multiple strings.
Co-authored-by: Dylan Baker <dylan@pnwbakers.com>
* Update add_compcert_compiler.md
Added a sentence about the state of the implementation (experimental); use proper markdown
* properly separate arguments
Co-authored-by: Dylan Baker <dylan@pnwbakers.com>
I wrote this to convert run_tests.get_backend_commands() over to the
new meson wrappers, but that turned out to be harder than I expected,
so just splitting this out for now.
- "Go To Document" action previously only worked
on c/cpp files which had the include directories
set but it was not possible to move from header to another header.
This reverts commit 8ee1c9a07a.
No rationale was given for this change prior to merging. After the fact
it was described as desired by distro packagers, however as a distro
packager I believe this commit hurts me.
From a distro packaging perspective, we primarily care about one thing:
previously building code should still build. Hence, -Werror is bad for
our use case. meson handles this via -D werror which is different from
-D warning_level and as long as the former is disabled, warnings in the
build do not cause harm (but may attract review attention for upstream
to fix).
buildtype is a completely unrelated concern, and the intention for
=plain is to disable debug or optimization settings that result in
codegen differences and thus different built artifacts. This must not
happen in distro builds because the *distributed programs* should
conform to policy settings.
Unfortunately, completely disabling warnings happens silently, and
cannot be overridden even if you really, really believe you know what
you're doing. It is thematically broken, since use of
add_project_arguments() to add more -W flags is not likewise ignored.
But if you try to add -Wall in that manner, meson will lecture you to
use warning_level which you cannot do. And if you have custom warning
flags which depend on options enabled by judicious use of -Wall via
default_options: 'warning_level=1', then you end up with generated
warnings complaining about your command line rather than your code, such
as:
cc1: warning: ‘-Wformat-y2k’ ignored without ‘-Wformat’ [-Wformat-y2k]
cc1: warning: ‘-Wformat-extra-args’ ignored without ‘-Wformat’ [-Wformat-extra-args]
cc1: warning: ‘-Wformat-zero-length’ ignored without ‘-Wformat’ [-Wformat-zero-length]
cc1: warning: ‘-Wformat-contains-nul’ ignored without ‘-Wformat’ [-Wformat-contains-nul]
cc1: warning: ‘-Wformat-security’ ignored without ‘-Wformat’ [-Wformat-security]
which then break the build with -Werror.
Throughout all this, a buildtype of "plain" does *not* disable -D
werror=true, which is the part where distro builds actually break down!
Users who both wish to disable debug/optimization codegen, *and* disable
warning commentary, are encouraged to do so by doing both, not by doing
one and having the other be assumed.
Fixes#7399
Besides refactoring code into smaller functions:
- Makes the --rebase behaviour the default for consistency: it was
already rebasing when current branch and revision are the same, it is
less confusing to rebase when they are different too.
- Add --reset mode that checkout the new branch and hard reset that
branch to remote commit. This new mode guarantees that every
subproject are exactly at the wrap's revision.
- Local changes are always stashed first to avoid any data loss. In the
worst case scenario the user can always check reflog and stash list to
rollback.
Fixes: #7526
If the command fails on some subprojects continue with the rest but
return non-0 code. This is useful for CI scripts to ensure it tests
latest code instead of old cached code in case of network error or
something.
Don't stop generating STATIC_LINKER rules at the first MachineChoice
which isn't available (i.e. generate a STATIC_LINKER rule, even if
STATIC_LINKER_FOR_BUILD isn't needed)
Also warn about internal errors which lead to non-existent rule
references, rather than exploding with a KeyError.
This means that, in the common case of a simple meson.build which
doesn't contain any 'native: true' targets, we won't require a native
compiler when cross-compiling, without needing any changes in the
meson.build.
Sebastian Meyer
Xavier Claessens
Nirbheek Chauhan
Tamás Bálint Misius
Vili Väinölä
Jon Turney
Eli Schwartz
Daniel Mensinger