Commits on Feb 5, 2024

1. Add support for custom JSON targets when using build-std. …

   Currently, when building with `build-std`, some library build scripts
   check properties of the target by inspecting the target triple at
   `env::TARGET`, which is simply set to the filename of the JSON file
   when using JSON target files.
   
   This patch alters these build scripts to use `env::CARGO_CFG_*` to
   fetch target information instead, allowing JSON target files
   describing platforms without `restricted_std` to build correctly when
   using `-Z build-std`.
   
   Fixes wg-cargo-std-aware/rust-lang#60.

   

   c272 committed Feb 5, 2024
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