core: make clap dependency optional (#56)

Author: datdenkikniet

crates/elf2uf2-core/Cargo.toml

@@ -12,7 +12,7 @@ documentation = "https://docs.rs/elf2uf2-core"
 
 [dependencies]
 assert_into = { workspace = true }
-clap = { workspace = true }
+clap = { workspace = true, optional = true }
 static_assertions = { workspace = true }
 zerocopy = { workspace = true }
 elf = { workspace = true }

crates/elf2uf2-core/src/lib.rs

@@ -21,7 +21,6 @@ use std::{
 
 use ::elf::{endian::AnyEndian, ElfStream, ParseError};
 use assert_into::AssertInto;
-use clap::ValueEnum;
 use log::*;
 use thiserror::Error;
 use zerocopy::IntoBytes;
@@ -31,8 +30,9 @@ pub mod elf;
 pub mod uf2;
 
 // See https://github.com/microsoft/uf2/blob/master/utils/uf2families.json for list
-#[derive(Debug, ValueEnum, Clone, Copy)]
+#[derive(Debug, Clone, Copy)]
 #[repr(u32)]
+#[cfg_attr(feature = "clap", derive(clap::ValueEnum))]
 #[allow(non_camel_case_types)]
 pub enum Family {
     /// Raspberry Pi RP2040

crates/elf2uf2-rs/Cargo.toml

@@ -11,7 +11,7 @@ description = "Port of elf2uf2 to rust"
 documentation = "https://docs.rs/elf2uf2-rs"
 
 [dependencies]
-elf2uf2-core = { version = "2.2.0", path = "../elf2uf2-core" }
+elf2uf2-core = { version = "2.2.0", path = "../elf2uf2-core", features = [ "clap" ] }
 
 clap = { workspace = true }
 pbr = { workspace = true }