dev-rust/libusb1-sys/files/libusb1-sys-0.3.7-0001-remove-build-dependencies.patch

--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,21 +26,11 @@
 repository = "https://github.com/a1ien/libusb1-sys.git"
 [dependencies.libc]
 version = "0.2"
-[build-dependencies.cc]
-version = "1.0"
-
-[build-dependencies.libflate]
-version = "0.1"
 
 [build-dependencies.pkg-config]
 version = "0.3"
 
-[build-dependencies.tar]
-version = "0.4"
-
 [features]
 vendored = []
-[target."cfg(target_env = \"msvc\")".build-dependencies.vcpkg]
-version = "0.2"
 [badges.travis-ci]
 repository = "a1ien/libusb1-sys"

--- a/build.rs
+++ b/build.rs
@@ -1,7 +1,6 @@
 use std::env;
 use std::io::Read;
 use std::path::{Path, PathBuf};
-use tar::Archive;
 
 static VERSION: &'static str = "1.0.22";
 
@@ -59,155 +58,10 @@
     }
 }
 
-fn unpack<R: Read>(data: R, dst: &Path) -> std::io::Result<()> {
-    let mut archive = Archive::new(data);
-    let skip: PathBuf = "README".into();
-    for entry in archive.entries()? {
-        let mut entry = entry?;
-        if entry.path()?.file_name().unwrap() == skip {
-            continue;
-        }
-        entry.unpack_in(dst)?;
-    }
-    Ok(())
-}
-
-fn extract_source() -> PathBuf {
-    use libflate::gzip::Decoder;
-    use std::{fs, io::Cursor};
-
-    let basename = format!("libusb-{}", VERSION);
-    let filename = format!("libusb/{}.tar.gz", basename);
-
-    let mut source_dir = PathBuf::from(env::var("OUT_DIR").unwrap()).join("source");
-    let data = Cursor::new(fs::read(&filename).unwrap());
-    let gz_decoder = Decoder::new(data).unwrap();
-    unpack(gz_decoder, &source_dir).unwrap();
-    source_dir.push(basename);
-    source_dir
-}
-
-fn make_source() {
-    let libusb_source = extract_source();
-
-    // Provide metadata and include directory for dependencies
-    println!("cargo:vendored=1");
-    println!("cargo:static=1");
-    let include_dir = PathBuf::from(env::var("OUT_DIR").unwrap()).join("include");
-    let _ = std::fs::create_dir(&include_dir);
-    std::fs::copy(
-        libusb_source.join("libusb/libusb.h"),
-        include_dir.join("libusb.h"),
-    )
-    .unwrap();
-    println!("cargo:include={}", include_dir.to_str().unwrap());
-
-    std::fs::File::create(format!("{}/{}", libusb_source.display(), "config.h")).unwrap();
-    let mut base_config = cc::Build::new();
-    base_config.include(&libusb_source);
-    base_config.include(libusb_source.join("libusb"));
-
-    // When building libusb from source, allow use of its logging facilities to aid debugging.
-    // FIXME: This does not link correctly under MinGW due to a rustc bug, so only do it on MSVC
-    // Ref: https://github.com/rust-lang/rust/issues/47048
-    if cfg!(target_env = "msvc") {
-        base_config.define("ENABLE_LOGGING", Some("1"));
-    }
-
-    if cfg!(target_os = "macos") {
-        base_config.define("OS_DARWIN", Some("1"));
-        base_config.file(libusb_source.join("libusb/os/darwin_usb.c"));
-        link_framework("CoreFoundation");
-        link_framework("IOKit");
-        link("objc", false);
-    }
-    if cfg!(target_os = "linux") {
-        base_config.define("OS_LINUX", Some("1"));
-        base_config.define("HAVE_ASM_TYPES_H", Some("1"));
-        base_config.define("HAVE_LINUX_NETLINK_H", Some("1"));
-        base_config.define("HAVE_SYS_SOCKET_H", Some("1"));
-        base_config.define("USBI_TIMERFD_AVAILABLE", Some("1"));
-        base_config.file(libusb_source.join("libusb/os/linux_netlink.c"));
-        base_config.file(libusb_source.join("libusb/os/linux_usbfs.c"));
-        base_config.define("POLL_NFDS_TYPE", Some("nfds_t"));
-        base_config.define("_GNU_SOURCE", Some("1"));
-    }
-
-    if cfg!(unix) {
-        base_config.define("HAVE_DLFCN_H", Some("1"));
-        base_config.define("HAVE_GETTIMEOFDAY", Some("1"));
-        base_config.define("HAVE_INTTYPES_H", Some("1"));
-        base_config.define("HAVE_MEMORY_H", Some("1"));
-        base_config.define("HAVE_POLL_H", Some("1"));
-        base_config.define("HAVE_STDINT_H", Some("1"));
-        base_config.define("HAVE_STDLIB_H", Some("1"));
-        base_config.define("HAVE_STRINGS_H", Some("1"));
-        base_config.define("HAVE_STRING_H", Some("1"));
-        base_config.define("HAVE_STRUCT_TIMESPEC", Some("1"));
-        base_config.define("HAVE_SYS_STAT_H", Some("1"));
-        base_config.define("HAVE_SYS_TIME_H", Some("1"));
-        base_config.define("HAVE_SYS_TYPES_H", Some("1"));
-        base_config.define("HAVE_UNISTD_H", Some("1"));
-        base_config.define("POLL_NFDS_TYPE", Some("nfds_t"));
-        base_config.define("STDC_HEADERS", Some("1"));
-        base_config.define("THREADS_POSIX", Some("1"));
-        base_config.define(
-            "DEFAULT_VISIBILITY",
-            Some("__attribute__((visibility(\"default\")))"),
-        );
-
-        match pkg_config::probe_library("libudev") {
-            Ok(_lib) => {
-                base_config.define("USE_UDEV", Some("1"));
-                base_config.define("HAVE_LIBUDEV", Some("1"));
-                base_config.define("HAVE_LIBUDEV_H", Some("1"));
-                base_config.file(libusb_source.join("libusb/os/linux_udev.c"));
-            }
-            _ => {}
-        };
-
-        base_config.file(libusb_source.join("libusb/os/poll_posix.c"));
-        base_config.file(libusb_source.join("libusb/os/threads_posix.c"));
-    }
-
-    if cfg!(windows) {
-        #[cfg(target_env = "msvc")]
-        base_config.define("_TIMESPEC_DEFINED", Some("1"));
-        #[cfg(target_env = "msvc")]
-        base_config.flag("/source-charset:utf-8");
-
-        base_config.warnings(false);
-        base_config.define("OS_WINDOWS", Some("1"));
-        base_config.file(libusb_source.join("libusb/os/poll_windows.c"));
-        base_config.file(libusb_source.join("libusb/os/threads_windows.c"));
-        base_config.file(libusb_source.join("libusb/os/windows_nt_common.c"));
-        base_config.file(libusb_source.join("libusb/os/windows_usbdk.c"));
-        base_config.file(libusb_source.join("libusb/os/windows_winusb.c"));
-
-        base_config.define("DEFAULT_VISIBILITY", Some(""));
-        base_config.define("POLL_NFDS_TYPE", Some("unsigned int"));
-        base_config.define("HAVE_SIGNAL_H", Some("1"));
-        base_config.define("HAVE_SYS_TYPES_H", Some("1"));
-        link("user32", false);
-    }
-
-    base_config.file(libusb_source.join("libusb/core.c"));
-    base_config.file(libusb_source.join("libusb/descriptor.c"));
-    base_config.file(libusb_source.join("libusb/hotplug.c"));
-    base_config.file(libusb_source.join("libusb/io.c"));
-    base_config.file(libusb_source.join("libusb/strerror.c"));
-    base_config.file(libusb_source.join("libusb/sync.c"));
-
-    base_config.compile("libusb.a");
-}
-
 fn main() {
     let statik = std::env::var("CARGO_CFG_TARGET_FEATURE")
         .map(|s| s.contains("crt-static"))
         .unwrap_or_default();
 
-    if cfg!(feature = "vendored") || !find_libusb_pkg(statik) {
-        extract_source();
-        make_source();
-    }
+    find_libusb_pkg(statik);
 }