After my changes to the RUSTFLAGS before 0.1.0, I had tested ctru-rs to ensure known-to-not-work examples would in fact compile. However, I mistakenly did not test network-related examples, and I only now notice that those RUSTFLAGS changes are required to link all network related functions.
= note: /opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys::unix::net::cvt_gai':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/unix/net.rs:49: undefined reference to `gai_strerror'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys::unix::net::Socket::recv_with_flags':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/unix/net.rs:247: undefined reference to `recv'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys::unix::net::Socket::shutdown':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/unix/net.rs:385: undefined reference to `shutdown'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys::unix::net::Socket::set_nonblocking':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/unix/net.rs:460: undefined reference to `ioctl'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys::unix::net::Socket::accept::{{closure}}':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/unix/net.rs:232: undefined reference to `accept'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys_common::net::setsockopt':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:68: undefined reference to `setsockopt'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `<std::sys_common::net::LookupHost as core::ops::drop::Drop>::drop':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:171: undefined reference to `freeaddrinfo'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `<std::sys_common::net::LookupHost as core::convert::TryFrom<(&str,u16)>>::try_from::{{closure}}':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:206: undefined reference to `getaddrinfo'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys_common::net::TcpStream::write':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:291: undefined reference to `send'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/Desktop/Programming/Rust/rust-3ds/ctru-rs/target/armv6k-nintendo-3ds/debug/deps/libstd-2aab5dc9bae7bd35.rlib(std-2aab5dc9bae7bd35.std.b2cd8dee9fb32859-cgu.14.rcgu.o): in function `std::sys_common::net::TcpListener::bind':
/Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:413: undefined reference to `bind'
/opt/devkitpro/devkitARM/bin/../lib/gcc/arm-none-eabi/13.1.0/../../../../arm-none-eabi/bin/ld: /Users/andreaciliberti/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys_common/net.rs:428: undefined reference to `listen'
collect2: error: ld returned 1 exit status
It's interesting to note how only networking functions are listed here, even though other functions (e.g. fopen and other fs functions) that are implemented in libctru don't have this issue.
I wonder if including these functions in the upstream newlib (maybe in a similar way to how the pthread functions are filled) would solve the issue...
After my changes to the RUSTFLAGS before 0.1.0, I had tested ctru-rs to ensure known-to-not-work examples would in fact compile. However, I mistakenly did not test network-related examples, and I only now notice that those RUSTFLAGS changes are required to link all network related functions.
It's interesting to note how only networking functions are listed here, even though other functions (e.g.
fopenand otherfsfunctions) that are implemented inlibctrudon't have this issue.I wonder if including these functions in the upstream
newlib(maybe in a similar way to how thepthreadfunctions are filled) would solve the issue...