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ecb6fd5309
This allows setting the RUST_FONTCONFIG_DLOPEN environment variable to dlopen fontconfig at runtime rather than linking it at build time. This is helpful for cross compiling to Linux, particularly because fontconfig has lots of C dependencies. Building a vendored copy of fontconfig does not work as expected: https://github.com/slint-ui/slint/issues/88
82 lines
2.5 KiB
Rust
82 lines
2.5 KiB
Rust
// Copyright © SixtyFPS GmbH <info@slint-ui.com>
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// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial
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use std::fs::read_dir;
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use std::io::Write;
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use std::path::{Path, PathBuf};
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fn main() -> std::io::Result<()> {
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println!("cargo:rerun-if-env-changed=RUST_FONTCONFIG_DLOPEN");
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let dlopen = std::env::var("RUST_FONTCONFIG_DLOPEN").is_ok();
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if dlopen {
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println!("cargo:rustc-cfg=feature=\"fontconfig-dlopen\"");
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}
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let mut library_dir = PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap());
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library_dir.push("widgets");
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println!("cargo:rerun-if-changed={}", library_dir.display());
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let output_file_path = Path::new(&std::env::var_os("OUT_DIR").unwrap())
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.join(Path::new("included_library").with_extension("rs"));
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let mut file = std::fs::File::create(&output_file_path)?;
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write!(
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file,
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r#"
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fn widget_library() -> &'static [(&'static str, &'static BuiltinDirectory<'static>)] {{
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&[
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"#
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)?;
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for style in read_dir(library_dir)?.filter_map(Result::ok) {
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let path = style.path();
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if !path.is_dir() {
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continue;
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}
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writeln!(
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file,
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"(\"{}\", &[{}]),",
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path.file_name().unwrap().to_string_lossy(),
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process_style(&path)?
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)?;
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}
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writeln!(file, "]\n}}")?;
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println!("cargo:rustc-env=SLINT_WIDGETS_LIBRARY={}", output_file_path.display());
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Ok(())
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}
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fn process_style(path: &Path) -> std::io::Result<String> {
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let library_files: Vec<PathBuf> = read_dir(path)?
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.filter_map(Result::ok)
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.filter(|entry| {
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entry.path().is_file()
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&& entry
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.path()
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.extension()
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.map(|ext| {
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ext == std::ffi::OsStr::new("slint")
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|| ext == std::ffi::OsStr::new("60")
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|| ext == std::ffi::OsStr::new("svg")
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|| ext == std::ffi::OsStr::new("svgz")
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})
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.unwrap_or_default()
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})
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.map(|entry| entry.path())
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.collect();
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Ok(library_files
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.iter()
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.map(|file| {
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format!(
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"&BuiltinFile {{path: r#\"{}\"# , contents: include_bytes!(r#\"{}\"#)}}",
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file.file_name().unwrap().to_string_lossy(),
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file.display()
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)
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})
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.collect::<Vec<_>>()
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.join(","))
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}
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