implot-rs/implot-sys/build.rs
4bb4 f85c50657b Initial work on move to implot 0.7 compatibility. See notes.
- This updates the bindings generator, the low-level bindings as
  well as the higher-level bindings and the examples to work
  with a newer master of cimplot that links to implot 0.7.
- Several things are not done properly yet:
  - Contexts can be created and as long as they are not dropped
    things work out (shown in the examples). However, this should
    be done more imgui-rs like, where operations that require a context
    make that explicit by requiring a context reference to be passed.
  - The README has not been updated yet to all the new features that
    were added.
2020-10-11 16:33:26 +02:00

64 lines
2 KiB
Rust

#![allow(dead_code)]
// This is taken pretty vanilla from
// https://github.com/Gekkio/imgui-rs/blob/master/imgui-sys/build.rs
// for now, but expected to diverge from that over time.
use std::{env, fs, io, path::Path};
const CPP_FILES: &[&str] = &[
"third-party/cimplot/cimplot.cpp",
"third-party/cimplot/implot/implot.cpp",
"third-party/cimplot/implot/implot_items.cpp",
"third-party/cimplot/implot/implot_demo.cpp", // Could remove this if demo not used
];
const IMPLOT_INCLUDE_DIRECTORIES: &[&str] = &["third-party/cimplot/implot/"];
fn assert_file_exists(path: &str) -> io::Result<()> {
match fs::metadata(path) {
Ok(_) => Ok(()),
Err(ref e) if e.kind() == io::ErrorKind::NotFound => {
panic!(
"Can't access {}. Did you forget to fetch git submodules?",
path
);
}
Err(e) => Err(e),
}
}
fn main() -> io::Result<()> {
// --- Compile cimgui
let mut build = cc::Build::new();
build.cpp(true);
// Take over imgui preprocessor defines from the imgui-sys crate.
// Taken from https://github.com/aloucks/imguizmo-rs/blob/master/imguizmo-sys/build.rs
for (key, val) in env::vars().filter(|(key, _)| key.starts_with("DEP_IMGUI_DEFINE_")) {
let key = key.trim_start_matches("DEP_IMGUI_DEFINE_");
let val = if !val.is_empty() {
Some(val.as_str())
} else {
None
};
build.define(key, val);
}
let cimgui_include_path =
env::var_os("DEP_IMGUI_THIRD_PARTY").expect("DEP_IMGUI_THIRD_PARTY not defined");
let imgui_include_path = Path::new(&cimgui_include_path).join("imgui");
build.include(&cimgui_include_path);
build.include(&imgui_include_path);
for path in IMPLOT_INCLUDE_DIRECTORIES {
build.include(path);
}
// Taken from the imgui-sys build as well
build.flag_if_supported("-Wno-return-type-c-linkage");
for path in CPP_FILES {
assert_file_exists(path)?;
build.file(path);
}
build.compile("cimplot");
Ok(())
}