[BUG] Even your own Examples doesn't work

[Guelakais]

Describe the bug

cargo check
   Compiling yeslogic-fontconfig-sys v3.2.0
   Compiling pathfinder_simd v0.5.2
   Compiling freetype-sys v0.19.0
    Checking fdeflate v0.3.4
error: failed to run custom build command for `yeslogic-fontconfig-sys v3.2.0`

Caused by:
  process didn't exit successfully: `/home/azrael/projects/rust/plotters_test/target/debug/build/yeslogic-fontconfig-sys-75b566cffd8d5793/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=RUST_FONTCONFIG_DLOPEN
  cargo:rerun-if-env-changed=FONTCONFIG_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=FONTCONFIG_STATIC
  cargo:rerun-if-env-changed=FONTCONFIG_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=FONTCONFIG_STATIC
  cargo:rerun-if-env-changed=FONTCONFIG_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR

  --- stderr
  thread 'main' panicked at /home/azrael/.cargo/registry/src/index.crates.io-6f17d22bba15001f/yeslogic-fontconfig-sys-3.2.0/build.rs:8:48:
  called `Result::unwrap()` on an `Err` value: "Could not run `PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags fontconfig`\nThe pkg-config command could not be found.\n\nMost likely, you need to install a pkg-config package for your OS.\nTry `apt install pkg-config`, or `yum install pkg-config`,\nor `pkg install pkg-config`, or `apk add pkgconfig` depending on your distribution.\n\nIf you've already installed it, ensure the pkg-config command is one of the\ndirectories in the PATH environment variable.\n\nIf you did not expect this build to link to a pre-installed system library,\nthen check documentation of the yeslogic-fontconfig-sys crate for an option to\nbuild the library from source, or disable features or dependencies\nthat require pkg-config."
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...

To Reproduce

use chrono::offset::{Local, TimeZone};
use chrono::{Date, Duration};
use plotters::prelude::*;
fn parse_time(t: &str) -> Date<Local> {
    Local
        .datetime_from_str(&format!("{} 0:0", t), "%Y-%m-%d %H:%M")
        .unwrap()
        .date()
}
const OUT_FILE_NAME: &str = "plotters-doc-data/stock.png";
fn main() -> Result<(), Box<dyn std::error::Error>> {
    let data = get_data();
    let root = BitMapBackend::new(OUT_FILE_NAME, (1024, 768)).into_drawing_area();
    root.fill(&WHITE)?;

    let (to_date, from_date) = (
        parse_time(data[0].0) + Duration::days(1),
        parse_time(data[29].0) - Duration::days(1),
    );

    let mut chart = ChartBuilder::on(&root)
        .x_label_area_size(40)
        .y_label_area_size(40)
        .caption("MSFT Stock Price", ("sans-serif", 50.0).into_font())
        .build_cartesian_2d(from_date..to_date, 110f32..135f32)?;

    chart.configure_mesh().light_line_style(WHITE).draw()?;

    chart.draw_series(
        data.iter().map(|x| {
            CandleStick::new(parse_time(x.0), x.1, x.2, x.3, x.4, GREEN.filled(), RED, 15)
        }),
    )?;

    // To avoid the IO failure being ignored silently, we manually call the present function
    root.present().expect("Unable to write result to file, please make sure 'plotters-doc-data' dir exists under current dir");
    println!("Result has been saved to {}", OUT_FILE_NAME);

    Ok(())
}

fn get_data() -> Vec<(&'static str, f32, f32, f32, f32)> {
    vec![
        ("2019-04-25", 130.06, 131.37, 128.83, 129.15),
        ("2019-04-24", 125.79, 125.85, 124.52, 125.01),
        ("2019-04-23", 124.1, 125.58, 123.83, 125.44),
        ("2019-04-22", 122.62, 124.0000, 122.57, 123.76),
        ("2019-04-18", 122.19, 123.52, 121.3018, 123.37),
        ("2019-04-17", 121.24, 121.85, 120.54, 121.77),
        ("2019-04-16", 121.64, 121.65, 120.1, 120.77),
        ("2019-04-15", 120.94, 121.58, 120.57, 121.05),
        ("2019-04-12", 120.64, 120.98, 120.37, 120.95),
        ("2019-04-11", 120.54, 120.85, 119.92, 120.33),
        ("2019-04-10", 119.76, 120.35, 119.54, 120.19),
        ("2019-04-09", 118.63, 119.54, 118.58, 119.28),
        ("2019-04-08", 119.81, 120.02, 118.64, 119.93),
        ("2019-04-05", 119.39, 120.23, 119.37, 119.89),
        ("2019-04-04", 120.1, 120.23, 118.38, 119.36),
        ("2019-04-03", 119.86, 120.43, 119.15, 119.97),
        ("2019-04-02", 119.06, 119.48, 118.52, 119.19),
        ("2019-04-01", 118.95, 119.1085, 118.1, 119.02),
        ("2019-03-29", 118.07, 118.32, 116.96, 117.94),
        ("2019-03-28", 117.44, 117.58, 116.13, 116.93),
        ("2019-03-27", 117.875, 118.21, 115.5215, 116.77),
        ("2019-03-26", 118.62, 118.705, 116.85, 117.91),
        ("2019-03-25", 116.56, 118.01, 116.3224, 117.66),
        ("2019-03-22", 119.5, 119.59, 117.04, 117.05),
        ("2019-03-21", 117.135, 120.82, 117.09, 120.22),
        ("2019-03-20", 117.39, 118.75, 116.71, 117.52),
        ("2019-03-19", 118.09, 118.44, 116.99, 117.65),
        ("2019-03-18", 116.17, 117.61, 116.05, 117.57),
        ("2019-03-15", 115.34, 117.25, 114.59, 115.91),
        ("2019-03-14", 114.54, 115.2, 114.33, 114.59),
    ]
}
#[test]
fn entry_point() {
    main().unwrap()
}

Version Information
Please give us what version you are using. If you are pulling Plotters directly from git repo, please mention this as well

chrono = "0.4.35"
plotters = "0.3.5"

[AaronErhardt]

https://github.com/plotters-rs/plotters?tab=readme-ov-file#dependencies

[Guelakais]

So you're telling me the dependency of your library is Ubuntu? Are you serious?

[AaronErhardt]

I don't understand your problem. You didn't read the manual and wonder why it doesn't work and still come back to waste my time with more pointless questions. No, of course we don't depend on Ubuntu, but we only provide the instructions for Ubuntu. The libraries will have very similar package names on other distros anyway. And if you want to add instructions for other Linux systems, you're welcome to send a PR.