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package/readme.md: update lto build flags

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Signed-off-by: Ian Leonard <antonlacon@gmail.com>
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Ian Leonard 2024-10-05 20:32:46 -04:00
parent bd2c679977
commit 35eee5d8c9
1 changed files with 1 additions and 2 deletions
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packages/readme.md
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@ -122,8 +122,7 @@ Set the variable `PKG_BUILD_FLAGS` in the `package.mk` to enable/disable the sin
| pic:host | disabled | host, bootstrap | see above |
| speed | disabled | target, init | replaces default `-O2` compiler optimization with `-O3` (can only enable; overrules size) |
| size | disabled | target, init | replaces default `-O2` compiler optimization with `-Os` (can only enable) |
| lto | disabled | target, init | enable LTO (Link Time optimization) in the compiler and linker unless disabled via `LTO_SUPPORT`. Compiles non-fat LTO objects (only bytecode) and performs single-threaded optimization at link stage |
| lto-parallel | disabled | target, init | same as `lto` but enables parallel optimization at link stage. Only enable this if the package build doesn't run multiple linkers in parallel otherwise this can result in lots of parallel processes! |
| lto | disabled | target, init | enable LTO (Link Time optimization) in the compiler and linker unless disabled via `LTO_SUPPORT`. Compiles non-fat LTO objects (only bytecode) and automatically determines number of threads to use for optimization at link stage |
| lto-fat | disabled | target, init | same as `lto` but compile fat LTO objects (bytecode plus optimized assembly). This increases compile time but can be useful to create static libraries suitable both for LTO and non-LTO linking |
| lto-off | disabled | target, init | explicitly disable LTO in the compiler and linker |
| bfd | - | target, init | `+bfd` prefers bfd linker over default linker, `-bfd` disables using bfd |