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SCons: Add production=yes option to use production defaults

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This is meant for users making custom builds to match the options used on
optimized, official builds.

This enables, on the platforms which support them:
- `use_static_cpp=yes` (portable binaries for Linux and Windows)
- `use_lto=yes` (link time optimizations - note: requires a lot of RAM!)
- `debug_symbols=no` (no debug symbols, smaller binaries)

Also abort when using MSVC with `production=yes`, as:
- It cannot optimize the GDScript VM like GCC or Clang do, leading to
  significant performance drops.
- Its LTO support is unreliable, at least used to trigger crashes last
  we tried it extensively.

All options can still be overridden if specified, and the `dev=yes` option
was changed to also support overrides.
This commit is contained in:
Rémi Verschelde
2021-02-03 10:47:06 +01:00
parent 3a3af0279b
commit db26871210
5 changed files with 39 additions and 17 deletions
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2
platform/osx/detect.py
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@@ -31,7 +31,7 @@ def get_opts():
False,
),
EnumVariable("macports_clang", "Build using Clang from MacPorts", "no", ("no", "5.0", "devel")),
EnumVariable("debug_symbols", "Add debugging symbols to release/release_debug builds", "yes", ("yes", "no")),
BoolVariable("debug_symbols", "Add debugging symbols to release/release_debug builds", True),
BoolVariable("separate_debug_symbols", "Create a separate file containing debugging symbols", False),
BoolVariable("use_ubsan", "Use LLVM/GCC compiler undefined behavior sanitizer (UBSAN)", False),
BoolVariable("use_asan", "Use LLVM/GCC compiler address sanitizer (ASAN))", False),