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There are too many users who compile Godot from source and are not familiar
with the buildsystem or C/C++ compilation warnings, and thus report any kind
of yet-unfixed warning as a (often duplicate) bug.
Compiler warnings change at every compiler version and are different for each
compiler, so it's difficult to ensure that the codebase would always be 100%
warning-free, especially in the future.
I already disabled it for stable releases in #37958, but having it on non
stable commits could also become an annoyance in the future when trying to
bisect issues with a new compiler version which emits warnings unknown at
the time of commit.
TL;DR: Contributors, use `dev=yes` or `werror=yes`. CI does and won't let you
create new warnings ;)
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SCons: Dump construction environment to a file
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A new `methods.dump(env)` is added to dump the construction environment
used by SCons to build Godot to a `.scons_env.json`. The file can be used
for debugging purposes and any external tool.
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This is still a bit hacky and eventually we should rework the way we handle
optional dependencies (especially with regard to builtin/system libs), but
it's a simple first step.
Fixes #39219.
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SCons: Allow to read `custom_modules` option via a file
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The `custom_modules` option was only read via the command line
by fetching `ARGUMENTS` dictionary directly.
Instead, the option's value can now be read via any existing
configuration files (`custom.py`) as well as command line, while also
updating the environment.
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Sconscript provides it's own `Exit()` method which is currently
an alias for `sys.exit()` internally, with the only difference that if
no exit code is specified, it defaults to 0.
This encourages the usage of SCons-implemented methods like
`Glob()` over `glob.glob()`, which may overcome limitations of the
built-in Python features in the future.
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SCons: use `OrderedDict` to ensure insertion order of modules
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The insertion order for dictionaries is only a language feature for
Python 3.6/3.7+ implementations, and not prior to that.
This ensures that the engine won't be rebuilt if the order of detected
modules changes in any way, as the `OrderedDict` should guarantee
inerstion order.
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SCons: Move build progress related logic out of main SConstruct
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This patch adds ability to include external, user-defined C++ modules
to be compiled as part of Godot via `custom_modules` build option
which can be passed to `scons`.
```
scons platform=x11 tools=yes custom_modules="../project/modules"
```
Features:
- detects all available modules under `custom_modules` directory the
same way as it does for built-in modules (not recursive);
- works with both relative and absolute paths on the filesystem;
- multiple search paths can be specified as a comma-separated list.
Module custom documentation and editor icons collection and generation
process is adapted to work with absolute paths needed by such modules.
Also fixed doctool bug mixing absolute and relative paths respectively.
Implementation details:
- `env.module_list` is a dictionary now, which holds both module name as
key and either a relative or absolute path to a module as a value.
- `methods.detect_modules` is run twice: once for built-in modules, and
second for external modules, all combined later.
- `methods.detect_modules` was not doing what it says on the tin. It is
split into `detect_modules` which collects a list of available modules
and `write_modules` which generates `register_types` sources for each.
- whether a module is built-in or external is distinguished by relative
or absolute paths respectively. `custom_modules` scons converter
ensures that the path is absolute even if relative path is supplied,
including expanding user paths and symbolic links.
- treats the parent directory as if it was Godot's base directory, so
that there's no need to change include paths in cases where custom
modules are included as dependencies in other modules.
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There's a builtin `toolpath` option we can use for that, so no need to hack
around a custom `scons_site` path.
The script requires SCons 3.1.1 or later, so we enable it conditionally.
Follow-up to #32848.
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This tool is originally from mongodb.
- Updated CPPSUFFIXES to use scons suffixes
- objective-c files will also be loaded into the compilation database where the compiler / tooling is available to compile the files.
Known limitations:
- This will not work with msvc as your compiler.
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-Added LocalVector (needed it)
-Added stb_rect_pack (It's pretty cool, we could probably use it for other stuff too)
-Fixes and changes all around the place
-Added library for 128 bits fixed point (required for Delaunay3D)
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Stable releases are tagged and need to stay easy to compile in the future.
As new compiler versions introduce new warnings or catch more occurrences,
have -Werror set in tagged releases could be a bother.
We still want it on by default for all Godot developers, so it's now
conditional.
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Fixes #37465. The #37369 commit which added an alias for linuxbsd
platform did not work with the latest branch.
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After an effort spanning several years, we should now be warning-free
on all major compilers, so we can set `-Werror` to ensure that we don't
introduce warnings in new code.
Disable -Werror=strict-overflow on GCC 7 though, as it seems bogus and
was fixed in 8+.
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Some required changes are made:
- locally imported SCons-specific packages within the method;
- `global` variables converted to `nonlocal` (used in nested functions).
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Configured for a max line length of 120 characters.
psf/black is very opinionated and purposely doesn't leave much room for
configuration. The output is mostly OK so that should be fine for us,
but some things worth noting:
- Manually wrapped strings will be reflowed, so by using a line length
of 120 for the sake of preserving readability for our long command
calls, it also means that some manually wrapped strings are back on
the same line and should be manually merged again.
- Code generators using string concatenation extensively look awful,
since black puts each operand on a single line. We need to refactor
these generators to use more pythonic string formatting, for which
many options are available (`%`, `format` or f-strings).
- CI checks and a pre-commit hook will be added to ensure that future
buildsystem changes are well-formatted.
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This makes it possible for users to follow outdated documentation
and still get a working binary.
This closes #37367.
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We now require SCons 3.0+ (first version with Python 3 support),
and we set min required Python 3 version to 3.5 (3.4 and earlier are
EOL).
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- Improve the SCsub to allow unbundling and remove unnecessary code.
- Move files around to match upstream source.
- Re-sync with upstream commit 308db73d0b3c2d1870cd3e465eaa283692a4cf23
to ensure we don't have local modifications.
- Doesn't actually build against current version 5.0.1 due to the lack
of the new ArmaturePopulate API that Gordon authored. We'll have to
wait for a public release with that API (5.1?) to enable unbundling.
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This flag is causing compilation issues with headers from older versions
of Windows SDK (before 10.0.16299.0).
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Otherwise comparisons would fail for compiler versions above 10.
Also simplified code somewhat to avoid using subprocess too much
needlessly.
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Follow-up to #36484.
The patches for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521 have now
landed in the `releases/gcc-8` branch and will be in GCC 8.4.
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Prevent using GCC 8 as it does not properly support C++17's
guaranteed copy elision which we now need.
(Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521)
Follow-up to #36457 and #36436.
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This attribute is now part of the standard we target so we no longer
need compiler-specific hacks.
Also enables -Wimplicit-fallthrough for Clang now that we can properly
support it. It's already on by default for GCC's -Wextra.
Fixes new warnings raised by Clang's -Wimplicit-fallthrough.
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We were running this logic too early, so `env.msvc` was not initialized
yet and MSVC used the same branch as GCC/Clang.
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As per #36436, we now need C++17's guaranteed copy elision feature to
solve ambiguities in Variant.
Core developers discussed the idea to move from C++14 to C++17 as our
minimum required C++ standard, and all agreed. Note that this doesn't
mean that Godot is going to be written in "modern C++", but we'll use
modern features where they make sense to simplify our "C with classes"
codebase. Apart from new code written recently, most of the codebase
still has to be ported to use newer features where relevant.
Proper support for C++17 means that we need recent compiler versions:
- GCC 7+
- Clang 6+
- VS 2017 15.7+
Additionally, C++17's `std::shared_mutex` (conditionally used by
`vk_mem_alloc.h` when C++17 support is enabled) is only available in
macOS 10.12+, so we increase our minimum supported version.
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On GCC and Clang, we use C11 and C++14 with GNU extensions (`std=gnu11`
and `std=gnu++14`). Those are the defaults for current GCC and Clang,
and also match the feature sets we want to use in Godot.
On MSVC, we require C++14 support explicitly with `/std:c++14`, and
make it strict with the use of `/permissive-` (so features of C++17 or
later can't be used).
Moves the definition before querying environment flags and platform
config so that it can be overridden when necessary.
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Fix -Wunused-variable, -Wunused-but-set-variable and -Wswitch warnings
raised by GCC 8 and 9.
Fix -Wunused-function, -Wunused-private-field and
-Wtautological-constant-out-of-range-compare raised by Clang.
Fix MSVC 2019 warning C4804 (unsafe use of type 'bool' in comparison
operation).
GCC -Wcpp warnings/Clang -W#warnings (`#warning`) are no longer raising
errors and will thus not abort compilation with `werror=yes`.
Treat glslang headers are system headers to avoid raising warnings.
Re-enables us to build with `werror=yes` on Linux and macOS, thus
catching warnings that would be introduced by new code.
Fixes #36132.
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Due to the port to Vulkan and complete redesign of the rendering backend,
the `drivers/gles3` code is no longer usable in this state and is not
planned to be ported to the new architecture.
The GLES2 backend is kept (while still disabled and non-working) as it
will eventually be ported to serve as the low-end renderer for Godot 4.0.
Some GLES3 features might be selectively ported to the updated GLES2
backend if there's a need for them, and extensions we can use for that.
So long, OpenGL driver bugs!
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- Renamed option to `builtin_vulkan`, since that's the name of the
library and if we were to add new components, we'd likely use that
same option.
- Merge `vulkan_loader/SCsub` in `vulkan/SCsub`.
- Accordingly, don't use built-in Vulkan headers when not building
against the built-in loader library.
- Drop Vulkan registry which we don't appear to need currently.
- Style and permission fixes.
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Initial Vulkan support for Windows.
Initial Vulkan support for macOS.
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- Added Navigation Agents and Obstacles.
- Integrated Collision Avoidance.
This work has been kindly sponsored by IMVU.
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This removes the need for the hacky split_libmodules logic on Windows,
since all libs are now of manageable size.
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- Fix build with gdscript module disabled. Fixes #31011.
- Remove unused `gdscript` compile option.
- Fix build with regex module disabled.
- Fix ImageLoaderSVG to forward declare thirdparty structs.
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We already had `MODULE_*_ENABLED` defines but only in the modules
environment, and a few custom `*_ENABLED` defines in the main env
when we needed the information in core.
Now this is defined in a single header which can be included in the
files that need this information.
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different versions of python
(cherry picked from commit beee8b37763dd25a105d75274b3f2fffe35f69e1)
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The new 'split_libmodules=yes' option is useful to work around linker
command line size limitations when linking a huge number of objects.
We're currently over 64k chars when linking libmodules.a on Windows
with MinGW, which triggers issues as seen in #30892.
Even on Linux, we can also reach linker command line size limitations
by adding more custom modules.
We force this option to True for MinGW on Windows, which fixes #30892.
Additional changes to lib splitting:
- Fix linking of the split module libs with interdependent symbols,
hacking our way into LINKCOM and SHLINKCOM to set the `--start-group`
and `--end-group` flags.
- Fix Python 3 compatibility in `methods.split_lib()`.
- Drop seemingly obsolete condition for 'msys' on 'posix'.
- Drop the unnecessary 'split_drivers' as the drivers lib is no longer
too big since we moved all thirdparty builds to modules.
Co-authored-by: Hein-Pieter van Braam-Stewart <hp@tmm.cx>
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Third-party platforms (e.g. console ports) need to be able to
disable JIT support in the regex module too, so it can't be
hardcoded in the module SCsub. This is cleaner this way anyway.
Fixes #19316.
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- Add or remove the necessary subdirectorires to the includes to remove
dependency on the editor directory being in the build's include path.
- Ensure includes in modified files conform to style guideline.
- Remove editor from the build include path.
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