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38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
diff --git a/lz4-sys/Cargo.toml b/lz4-sys/Cargo.toml
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index 033f2eddc..4001ecd66 100644
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--- a/lz4-sys/Cargo.toml
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+++ b/lz4-sys/Cargo.toml
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@@ -1,0 +1,2 @@ libc = "0.2.44"
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+[build-dependencies.pkg-config]
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+version = "0.3.9"
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diff --git a/lz4-sys/build.rs b/lz4-sys/build.rs
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index c69d25716..32a69f418 100644
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--- a/lz4-sys/build.rs
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+++ b/lz4-sys/build.rs
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@@ -15,6 +15,18 @@ fn main() {
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}
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fn run() -> Result<(), Box<dyn Error>> {
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+ let target = get_from_env("TARGET")?;
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+
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+ if !target.contains("windows")
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+ && pkg_config::Config::new()
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+ .print_system_libs(false)
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+ .cargo_metadata(true)
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+ .probe("liblz4")
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+ .is_ok()
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+ {
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+ return Ok(());
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+ }
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+
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let mut compiler = cc::Build::new();
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compiler
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.file("liblz4/lib/lz4.c")
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@@ -24,7 +36,6 @@ fn run() -> Result<(), Box<dyn Error>> {
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// We always compile the C with optimization, because otherwise it is 20x slower.
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.opt_level(3);
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- let target = get_from_env("TARGET")?;
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if target.contains("windows") {
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if target == "i686-pc-windows-gnu" {
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// Disable auto-vectorization for 32-bit MinGW target.
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