Hi,

unfortunately, i cannot compile freecut on Fedora. It aborts in last step:

   Compiling fltk v0.15.15
   Compiling freecut v0.1.9
error[E0277]: `Option<usize>` doesn't implement `std::fmt::Display`
  --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/freecut-0.1.9/src/func.rs:53:25
   |
53 |                         cutp.external_id, cutp.width, cutp.length
   |                         ^^^^^^^^^^^^^^^^ `Option<usize>` cannot be formatted with the default formatter
   |
   = help: the trait `std::fmt::Display` is not implemented for `Option<usize>`
   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
   = note: this error originates in the macro `$crate::__export::format_args` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0599]: the method `to_string` exists for enum `Option<usize>`, but its trait bounds were not satisfied
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/freecut-0.1.9/src/func.rs:80:43
    |
80  |                           &cutp.external_id.to_string(),
    |                                             ^^^^^^^^^ method cannot be called on `Option<usize>` due to unsatisfied trait bounds
    |
    = note: the following trait bounds were not satisfied:
            `Option<usize>: std::fmt::Display`
            which is required by `Option<usize>: ToString`

error[E0308]: mismatched types
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/freecut-0.1.9/src/func.rs:197:34
    |
197 |                     external_id: generate_uid(used_id),
    |                                  ^^^^^^^^^^^^^^^^^^^^^
    |                                  |
    |                                  expected enum `Option`, found `usize`
    |                                  help: try using a variant of the expected enum: `Some(generate_uid(used_id))`
    |
    = note: expected enum `Option<usize>`
               found type `usize`

Some errors have detailed explanations: E0277, E0308, E0599.
For more information about an error, try `rustc --explain E0277`.
error: failed to compile `freecut v0.1.9`, intermediate artifacts can be found at `/tmp/cargo-installSkBUMB`

Caused by:
  could not compile `freecut` due to 3 previous errors

Currently it provide mm only, Inched and foots should also be added.

error: failed to run custom build command for fltk-sys v0.15.14

Caused by:
process didn't exit successfully: /var/folders/st/4s7_cfkn2cs6k0zbxvtr1f680000gn/T/cargo-installwZvg2j/release/build/fltk-sys-8b39f08763fe5d7d/build-script-build (exit status: 101)
--- stdout
cargo:rerun-if-changed=build.rs
cargo:rerun-if-env-changed=CC
cargo:rerun-if-env-changed=CXX
cargo:rerun-if-changed=cfltk/CMakeLists.txt
cargo:rerun-if-changed=cfltk/include/cfl.h
cargo:rerun-if-changed=cfltk/include/cfl_widget.h
cargo:rerun-if-changed=cfltk/include/cfl_group.h
cargo:rerun-if-changed=cfltk/include/cfl_input.h
cargo:rerun-if-changed=cfltk/include/cfl_output.h
cargo:rerun-if-changed=cfltk/include/cfl_window.h
cargo:rerun-if-changed=cfltk/include/cfl_button.h
cargo:rerun-if-changed=cfltk/include/cfl_box.h
cargo:rerun-if-changed=cfltk/include/cfl_menu.h
cargo:rerun-if-changed=cfltk/include/cfl_dialog.h
cargo:rerun-if-changed=cfltk/include/cfl_valuator.h
cargo:rerun-if-changed=cfltk/include/cfl_browser.h
cargo:rerun-if-changed=cfltk/include/cfl_misc.h
cargo:rerun-if-changed=cfltk/include/cfl_text.h
cargo:rerun-if-changed=cfltk/include/cfl_image.h
cargo:rerun-if-changed=cfltk/include/cfl_draw.h
cargo:rerun-if-changed=cfltk/include/cfl_table.h
cargo:rerun-if-changed=cfltk/include/cfl_surface.h
cargo:rerun-if-changed=cfltk/include/cfl_printer.h
cargo:rerun-if-changed=cfltk/src/cfl_global.hpp
cargo:rerun-if-changed=cfltk/src/cfl_new.cpp
cargo:rerun-if-changed=cfltk/src/cfl.cpp
cargo:rerun-if-changed=cfltk/src/cfl_widget.cpp
cargo:rerun-if-changed=cfltk/src/cfl_group.cpp
cargo:rerun-if-changed=cfltk/src/cfl_window.cpp
cargo:rerun-if-changed=cfltk/src/cfl_button.cpp
cargo:rerun-if-changed=cfltk/src/cfl_box.cpp
cargo:rerun-if-changed=cfltk/src/cfl_menu.cpp
cargo:rerun-if-changed=cfltk/src/cfl_dialog.cpp
cargo:rerun-if-changed=cfltk/src/cfl_valuator.cpp
cargo:rerun-if-changed=cfltk/src/cfl_browser.cpp
cargo:rerun-if-changed=cfltk/src/cfl_misc.cpp
cargo:rerun-if-changed=cfltk/src/cfl_text.cpp
cargo:rerun-if-changed=cfltk/src/cfl_image.cpp
cargo:rerun-if-changed=cfltk/src/cfl_input.cpp
cargo:rerun-if-changed=cfltk/src/cfl_output.cpp
cargo:rerun-if-changed=cfltk/src/cfl_draw.cpp
cargo:rerun-if-changed=cfltk/src/cfl_table.cpp
cargo:rerun-if-changed=cfltk/src/cfl_tree.cpp
cargo:rerun-if-changed=cfltk/src/cfl_surface.cpp
cargo:rerun-if-changed=cfltk/src/cfl_printer.cpp
CMAKE_TOOLCHAIN_FILE_aarch64-apple-darwin = None
CMAKE_TOOLCHAIN_FILE_aarch64_apple_darwin = None
HOST_CMAKE_TOOLCHAIN_FILE = None
CMAKE_TOOLCHAIN_FILE = None
CMAKE_GENERATOR_aarch64-apple-darwin = None
CMAKE_GENERATOR_aarch64_apple_darwin = None
HOST_CMAKE_GENERATOR = None
CMAKE_GENERATOR = None
CMAKE_PREFIX_PATH_aarch64-apple-darwin = None
CMAKE_PREFIX_PATH_aarch64_apple_darwin = None
HOST_CMAKE_PREFIX_PATH = None
CMAKE_PREFIX_PATH = None
CMAKE_aarch64-apple-darwin = None
CMAKE_aarch64_apple_darwin = None
HOST_CMAKE = None
CMAKE = None
running: cd "/var/folders/st/4s7_cfkn2cs6k0zbxvtr1f680000gn/T/cargo-installwZvg2j/release/build/fltk-sys-bbc86d6cc68d5b7b/out/build" && CMAKE_PREFIX_PATH="" "cmake" "/Users/shubhamjain/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fltk-sys-0.15.14/cfltk" "-DCMAKE_OSX_ARCHITECTURES=arm64" "-DOPTION_USE_SYSTEM_LIBPNG=OFF" "-DOPTION_USE_SYSTEM_LIBJPEG=OFF" "-DOPTION_USE_SYSTEM_ZLIB=OFF" "-DCFLTK_LINK_IMAGES=ON" "-DOpenGL_GL_PREFERENCE=GLVND" "-DOPTION_USE_GL=OFF" "-DCFLTK_USE_OPENGL=OFF" "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON" "-DFLTK_BUILD_EXAMPLES=OFF" "-DFLTK_BUILD_TEST=OFF" "-DOPTION_USE_THREADS=ON" "-DOPTION_LARGE_FILE=ON" "-DOPTION_BUILD_HTML_DOCUMENTATION=OFF" "-DOPTION_BUILD_PDF_DOCUMENTATION=OFF" "-DCMAKE_INSTALL_PREFIX=/var/folders/st/4s7_cfkn2cs6k0zbxvtr1f680000gn/T/cargo-installwZvg2j/release/build/fltk-sys-bbc86d6cc68d5b7b/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_ASM_COMPILER=/usr/bin/cc" "-DCMAKE_BUILD_TYPE=Release"

--- stderr
fatal: not a git repository (or any of the parent directories): .git
thread 'main' panicked at /Users/shubhamjain/.cargo/registry/src/index.crates.io-6f17d22bba15001f/cmake-0.1.50/src/lib.rs:1098:5:

failed to execute command: No such file or directory (os error 2)
is cmake not installed?

build script failed, must exit now
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: failed to compile freecut v0.1.10, intermediate artifacts can be found at /var/folders/st/4s7_cfkn2cs6k0zbxvtr1f680000gn/T/cargo-installwZvg2j.
To reuse those artifacts with a future compilation, set the environment variable CARGO_TARGET_DIR to that path.