Change Details

This is part 1 of adopting C17, therefore migrating to `gnu17` from `gnu99`. **Why?** There are many reasons, but some prominent reasons are - Facilitating the adoption of C23/C2x. This is likely to be finalized in 2024, and `clang` has already [[ https://clang.llvm.org/c_status.html | implemented ]] most of C2x features. Migrating from C17 to C2x will be easier than migrating from C99 to C2x. - C11 has adopted GCC specific features as a part of standard, such as _Alignas. However, _Alignas currently conflicts with `gnu17` when used without `-Wno-gnu-statement-expression` - Allowing programs to use C11 features without specifying `CSTD= c17` or similar. **This revision DOES** - Change default C standard version for `buildworld` to `gnu17` - Remove `CSTD= c11` in some `Makefile`s since `gnu17` will be automatically applied **This revision DOES NOT** - Change C standard version in contributed code in `contrib/`

This is part 1 of adopting C17, therefore migrating to `gnu17` from `gnu99`. **Why?** There are many reasons, but some prominent reasons are - Facilitating the adoption of C23/C2x. This is likely to be finalized in 2024, and `clang` has already [[ https://clang.llvm.org/c_status.html | implemented ]] most of C2x features. Migrating from C17 to C2x will be easier than migrating from C99 to C2x. - C11 has adopted GCC specific features as a part of standard, such as _Alignas. However, _Alignas currently conflicts with `gnu17` when used without `-Wno-gnu-statement-expression` - Allowing programs to use C11 features without specifying `CSTD= c17` or similar. **This revision DOES** - Change default C standard version for `buildworld` to `gnu17` - Remove `CSTD= c11` in some `Makefile`s since `gnu17` will be automatically applied **This revision DOES NOT** - Change C standard version in contributed code in `contrib/`

This is part 1 of adopting C17, therefore migrating to `gnu17` from `gnu99`. **Why?** There are many reasons, but some prominent reasons are - Facilitating the adoption of C23/C2x. This is likely to be finalized in 2024, and `clang` has already [[ https://clang.llvm.org/c_status.html | implemented ]] most of C2x features. Migrating from C17 to C2x will be easier than migrating from C99 to C2x. - C11 has adopted GCC specific features as a part of standard, such as _Alignas. However, _Alignas currently conflicts with `gnu17` when used without `-Wno-gnu-statement-expression` - Allowing programs to use C11 features without specifying `CSTD= c17` or similar. **This revision DOES** - Change default C standard version for `buildworld` to `gnu17` - Remove `CSTD= c11` in some `Makefile`s since `gnu17` will be automatically applied **This revision DOES NOT** - Change C standard version in contributed code in `contrib/`