Rollup merge of #47846 - roblabla:bugfix-ocaml, r=kennytm

[rust.git] / src / bootstrap / native.rs

diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 2ea026244034f742a2f4ec871346c0ddb6d9b34e..5a4791833fe0d510569f5c588394718fe257f3fa 100644 (file)
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -159,6 +159,14 @@ fn run(self, builder: &Builder) -> PathBuf {
            .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
            .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
 
+        // By default, LLVM will automatically find OCaml and, if it finds it,
+        // install the LLVM bindings in LLVM_OCAML_INSTALL_PATH, which defaults
+        // to /usr/bin/ocaml.
+        // This causes problem for non-root builds of Rust. Side-step the issue
+        // by setting LLVM_OCAML_INSTALL_PATH to a relative path, so it installs
+        // in the prefix.
+        cfg.define("LLVM_OCAML_INSTALL_PATH",
+            env::var_os("LLVM_OCAML_INSTALL_PATH").unwrap_or_else(|| "usr/lib/ocaml".into()));
 
         // This setting makes the LLVM tools link to the dynamic LLVM library,
         // which saves both memory during parallel links and overall disk space