rust/src/test/run-make-fulldeps/core-no-fp-fmt-parse/Makefile

-include ../tools.mk

all:
	$(RUSTC) --edition=2021 --crate-type=rlib ../../../../library/core/src/lib.rs --cfg no_fp_fmt_parse
core: add unstable `no_fp_fmt_parse` to disable float fmt/parse code In some projects (e.g. kernel), floating point is forbidden. They can disable hardware floating point support and use `+soft-float` to avoid fp instructions from being generated, but as libcore contains the formatting code for `f32` and `f64`, some fp intrinsics are depended. One could define stubs for these intrinsics that just panic [1], but it means that if any formatting functions are accidentally used, mistake can only be caught during the runtime rather than during compile-time or link-time, and they consume a lot of space without LTO. This patch provides an unstable cfg `no_fp_fmt_parse` to disable these. A panicking stub is still provided for the `Debug` implementation (unfortunately) because there are some SIMD types that use `#[derive(Debug)]`. [1]: https://lkml.org/lkml/2021/4/14/1028 2021-06-06 01:28:05 +00:00			`-include ../tools.mk`

			`all:`
Build libcore as 2021 in a few more places The `Cargo.toml` has `edition = "2021"`, so that's what these command lines should use too. 2022-02-02 06:48:04 +00:00			`$(RUSTC) --edition=2021 --crate-type=rlib ../../../../library/core/src/lib.rs --cfg no_fp_fmt_parse`