Bug 1516228 - Add a configure check for llvm-objdump. r=firefox-build…

…-system-reviewers,mshal

Differential Revision: https://phabricator.services.mozilla.com/D17462

--HG--
extra : moz-landing-system : lando

build/moz.configure/init.configure

@@ -9,6 +9,9 @@ include('checks.configure')
 
 # Make `toolkit` available when toolkit/moz.configure is not included.
 toolkit = dependable(None)
+# Likewise with `bindgen_config_paths` when
+# build/moz.configure/bindgen.configure is not included.
+bindgen_config_paths = dependable(None)
 
 option(env='DIST', nargs=1, help='DIST directory')
 

moz.configure

@@ -583,6 +583,29 @@ set_config('MAKENSISU_FLAGS', nsis_flags)
 
 check_prog('7Z', ('7z', '7za'), allow_missing=True, when=target_is_windows)
 
+
+@depends(c_compiler, bindgen_config_paths)
+def llvm_objdump(c_compiler, bindgen_config_paths):
+    clang = None
+    if c_compiler and c_compiler.type == 'clang':
+        clang = c_compiler.compiler
+    elif c_compiler and c_compiler.type == 'clang-cl':
+        clang = os.path.join(os.path.dirname(c_compiler.compiler), 'clang')
+    elif bindgen_config_paths:
+        clang = bindgen_config_paths.clang_path
+    llvm_objdump = 'llvm-objdump'
+    if clang:
+        out = check_cmd_output(clang, '--print-prog-name=llvm-objdump',
+                               onerror=lambda: None)
+        if out:
+            llvm_objdump = out.rstrip()
+    return (llvm_objdump,)
+
+
+check_prog('LLVM_OBJDUMP', llvm_objdump, what='llvm-objdump',
+           when='--enable-compile-environment')
+
+
 # Please do not add configure checks from here on.
 
 # Fallthrough to autoconf-based configure