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Allow overriding of the libgit2 pkgconfig at build time #1065

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Allow overriding of the libgit2 pkgconfig at build time #1065

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13 changes: 12 additions & 1 deletion libgit2-sys/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,8 +6,19 @@ use std::process::Command;

/// Tries to use system libgit2 and emits necessary build script instructions.
fn try_system_libgit2() -> Result<pkg_config::Library, pkg_config::Error> {
// Specify `LIBGIT2_OVERRIDE_PKGCONFIG_NAME` to change the name of the pkgconfig configuration
// that will be looked for when checking to see if the system libgit2 is usable. This is
// most useful for distributions that may ship co-installable versions of libgit2 where
// the pkgconfig may be renamed.
println!("cargo:rerun-if-env-changed=LIBGIT2_OVERRIDE_PKGCONFIG_NAME");
let libgit2_pkgconfig =
env::var("LIBGIT2_OVERRIDE_PKGCONFIG_NAME").unwrap_or("libgit2".to_string());

let mut cfg = pkg_config::Config::new();
match cfg.range_version("1.8.1".."1.9.0").probe("libgit2") {
match cfg
.range_version("1.8.1".."1.9.0")
.probe(&libgit2_pkgconfig)
{
Ok(lib) => {
for include in &lib.include_paths {
println!("cargo:root={}", include.display());
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