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128 lines
3.9 KiB
128 lines
3.9 KiB
From 8a87f94f09c98f2c503da541239b819d2fe0178c Mon Sep 17 00:00:00 2001
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From: Fabio Valentini <decathorpe@gmail.com>
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Date: Mon, 12 Dec 2022 23:28:52 +0100
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Subject: [PATCH] build: unconditionally link against system liblzma
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---
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build.rs | 107 ++-----------------------------------------------------
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1 file changed, 2 insertions(+), 105 deletions(-)
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diff --git a/build.rs b/build.rs
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index 6bec545..22ab405 100644
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--- a/build.rs
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+++ b/build.rs
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@@ -1,108 +1,5 @@
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-use std::env;
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-use std::fs;
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-use std::path::PathBuf;
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-
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-const SKIP_FILENAMES: &[&str] = &["crc32_small", "crc64_small"];
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-
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fn main() {
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- let target = env::var("TARGET").unwrap();
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-
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println!("cargo:rerun-if-changed=build.rs");
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- println!("cargo:rerun-if-env-changed=LZMA_API_STATIC");
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- let want_static = cfg!(feature = "static") || env::var("LZMA_API_STATIC").is_ok();
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- let msvc = target.contains("msvc");
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-
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- // If a static link is desired, we compile from source.
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- // If we're compiling for MSVC, pkg-config runs a risk of picking up MinGW
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- // libraries by accident, so disable it.
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- //
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- // Otherwise check the system to see if it has an lzma library already
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- // installed that we can use.
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- if !want_static && !msvc && pkg_config::probe_library("liblzma").is_ok() {
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- return;
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- }
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-
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- let out_dir = env::var("OUT_DIR").unwrap();
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- println!("cargo:root={}", out_dir);
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- let include_dir = env::current_dir().unwrap().join("xz-5.2/src/liblzma/api");
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- println!("cargo:include={}", include_dir.display());
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-
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- let mut src_files = [
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- "xz-5.2/src/liblzma/common",
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- "xz-5.2/src/liblzma/lzma",
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- "xz-5.2/src/liblzma/lz",
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- "xz-5.2/src/liblzma/check",
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- "xz-5.2/src/liblzma/delta",
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- "xz-5.2/src/liblzma/rangecoder",
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- "xz-5.2/src/liblzma/simple",
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- ]
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- .iter()
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- .flat_map(|dir| read_dir_files(dir))
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- .chain(vec![
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- "xz-5.2/src/common/tuklib_cpucores.c".into(),
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- "xz-5.2/src/common/tuklib_physmem.c".into(),
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- ])
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- .collect::<Vec<_>>();
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-
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- // sort to make build reproducible.
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- src_files.sort();
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-
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- let mut build = cc::Build::new();
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-
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- build
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- .files(src_files)
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- // all C preproc defines are in `./config.h`
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- .define("HAVE_CONFIG_H", "1")
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- .include("xz-5.2/src/liblzma/api")
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- .include("xz-5.2/src/liblzma/lzma")
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- .include("xz-5.2/src/liblzma/lz")
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- .include("xz-5.2/src/liblzma/check")
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- .include("xz-5.2/src/liblzma/simple")
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- .include("xz-5.2/src/liblzma/delta")
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- .include("xz-5.2/src/liblzma/common")
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- .include("xz-5.2/src/liblzma/rangecoder")
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- .include("xz-5.2/src/common")
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- .include(env::current_dir().unwrap());
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-
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- if !target.ends_with("msvc") {
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- build.flag("-std=c99").flag("-pthread");
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- }
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-
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- if let Ok(s) = env::var("CARGO_CFG_TARGET_ENDIAN") {
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- if s == "big" {
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- build.define("WORDS_BIGENDIAN", None);
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- }
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- }
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-
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- build.compile("liblzma.a");
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-}
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-
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-fn read_dir_files(dir: &str) -> impl Iterator<Item = PathBuf> {
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- fs::read_dir(dir)
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- .expect(&format!("failed to read dir {}", dir))
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- .filter_map(|ent| {
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- let ent = ent.expect("failed to read entry");
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-
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- if ent.file_type().unwrap().is_dir() {
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- return None;
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- }
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-
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- let path = ent.path();
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-
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- if path.extension().unwrap() != "c" {
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- return None;
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- }
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-
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- {
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- let file_stem = path.file_stem().unwrap().to_str().unwrap();
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- if SKIP_FILENAMES.contains(&file_stem) {
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- return None;
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- }
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- if file_stem.ends_with("tablegen") {
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- return None;
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- }
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- }
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-
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- Some(path)
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- })
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+ pkg_config::probe_library("liblzma").unwrap();
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+ return;
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}
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--
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2.38.1
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