Commits on Sep 26, 2022

1. SCons: Unify tools/target build type configuration …

   Implements godotengine/godot-proposals#3371.
   
   New `target` presets
   ====================
   
   The `tools` option is removed and `target` changes to use three new presets,
   which match the builds users are familiar with. These targets control the
   default optimization level and enable editor-specific and debugging code:
   
   - `editor`: Replaces `tools=yes target=release_debug`.
     * Defines: `TOOLS_ENABLED`, `DEBUG_ENABLED`, `-O2`/`/O2`
   - `template_debug`: Replaces `tools=no target=release_debug`.
     * Defines: `DEBUG_ENABLED`, `-O2`/`/O2`
   - `template_release`: Replaces `tools=no target=release`.
     * Defines: `-O3`/`/O2`
   
   New `dev_build` option
   ======================
   
   The previous `target=debug` is now replaced by a separate `dev_build=yes`
   option, which can be used in combination with either of the three targets,
   and changes the following:
   
   - `dev_build`: Defines `DEV_ENABLED`, disables optimization (`-O0`/`/0d`),
     enables generating debug symbols, does not define `NDEBUG` so `assert()`
     works in thirdparty libraries, adds a `.dev` suffix to the binary name.
   
   Note: Unlike previously, `dev_build` defaults to off so that users who
   compile Godot from source get an optimized and small build by default.
   Engine contributors should now set `dev_build=yes` in their build scripts or
   IDE configuration manually.
   
   Changed binary names
   ====================
   
   The name of generated binaries and object files are changed too, to follow
   this format:
   
   `godot.<platform>.<target>[.dev][.double].<arch>[.<extra_suffix>][.<ext>]`
   
   For example:
   - `godot.linuxbsd.editor.dev.arm64`
   - `godot.windows.template_release.double.x86_64.mono.exe`
   
   Be sure to update your links/scripts/IDE config accordingly.
   
   More flexible `optimize` and `debug_symbols` options
   ====================================================
   
   The optimization level and whether to generate debug symbols can be further
   specified with the `optimize` and `debug_symbols` options. So the default
   values listed above for the various `target` and `dev_build` combinations
   are indicative and can be replaced when compiling, e.g.:
   
   `scons p=linuxbsd target=template_debug dev_build=yes optimize=debug`
   will make a "debug" export template with dev-only code enabled, `-Og`
   optimization level for GCC/Clang, and debug symbols. Perfect for debugging
   complex crashes at runtime in an exported project.

   

   akien-mga committed Sep 26, 2022
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