Add logging of Clang version

3 files changed, 29 insertions, 1 deletions

diff --git a/src/bin/bindgen.rs b/src/bin/bindgen.rs
index 2a7995e7..c66a3744 100755
--- a/src/bin/bindgen.rs
+++ b/src/bin/bindgen.rs
@@ -8,7 +8,7 @@ extern crate log;
 extern crate clang_sys;
 extern crate rustc_serialize;
 
-use bindgen::{BindgenOptions, Bindings, LinkType};
+use bindgen::{BindgenOptions, Bindings, LinkType, clang_version};
 use std::default::Default;
 use std::env;
 use std::fs;
@@ -217,6 +217,16 @@ pub fn main() {
 
     let mut bind_args: Vec<_> = env::args().collect();
 
+    let clang_version = clang_version();
+
+    if cfg!(feature = "llvm_stable") {
+        assert_eq!(clang_version, "3.8.0");
+    } else {
+        assert_eq!(clang_version, "3.9.0");
+    }
+
+    debug!("Using Clang Version: {}", clang_version);
+
     if let Some(clang) = clang_sys::support::Clang::find(None) {
         let has_clang_args =
             bind_args.iter().rposition(|arg| *arg == "--").is_some();
diff --git a/src/clang.rs b/src/clang.rs
index d69c8b14..a8e4fdf2 100755
--- a/src/clang.rs
+++ b/src/clang.rs
@@ -1426,3 +1426,9 @@ pub fn ast_dump(c: &Cursor, depth: isize) -> Enum_CXVisitorResult {
     print_indent(depth, ")");
     CXChildVisit_Continue
 }
+
+pub fn extract_clang_version() -> Option<String> {
+    let s: String =
+        unsafe { clang_getClangVersion().into() };
+    if s.is_empty() { None } else { Some(s) }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 1592c275..5124c417 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -448,3 +448,15 @@ fn parse(context: &mut BindgenContext) {
     assert!(context.current_module() == context.root_module(),
             "How did this happen?");
 }
+
+/// Get the version number (e.g. 3.9.0) of Clang in String form
+pub fn clang_version() -> String {
+    clang::extract_clang_version()
+        .expect("Could not retrieve Clang version!")
+        .split(' ')
+        .nth(2)
+        .expect("Could not parse Clang version!")
+        .to_string()
+}
+
+