2 files changed, 11 insertions, 0 deletions
diff --git a/mesonbuild/compilers/__init__.py b/mesonbuild/compilers/__init__.py
index b378a63..a4e3943 100644
--- a/mesonbuild/compilers/__init__.py
+++ b/mesonbuild/compilers/__init__.py
@@ -30,6 +30,7 @@ __all__ = [
     'is_llvm_ir',
     'is_object',
     'is_source',
+    'is_known_suffix',
     'lang_suffixes',
     'sort_clink',
 
@@ -115,6 +116,7 @@ from .compilers import (
     is_llvm_ir,
     is_object,
     is_library,
+    is_known_suffix,
     lang_suffixes,
     sort_clink,
     CompilerArgs,
diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index caa8600..366bb50 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -14,6 +14,7 @@
 
 import contextlib, os.path, re, tempfile
 import collections.abc
+import itertools
 import typing as T
 from functools import lru_cache
 
@@ -75,6 +76,7 @@ clink_suffixes = ()
 for _l in clink_langs + ('vala',):
     clink_suffixes += lang_suffixes[_l]
 clink_suffixes += ('h', 'll', 's')
+all_suffixes = set(itertools.chain(*lang_suffixes.values(), clink_suffixes))
 
 # Languages that should use LDFLAGS arguments when linking.
 languages_using_ldflags = ('objcpp', 'cpp', 'objc', 'c', 'fortran', 'd', 'cuda')
@@ -147,6 +149,13 @@ def is_library(fname):
     suffix = fname.split('.')[-1]
     return suffix in lib_suffixes
 
+def is_known_suffix(fname):
+    if hasattr(fname, 'fname'):
+        fname = fname.fname
+    suffix = fname.split('.')[-1]
+
+    return suffix in all_suffixes
+
 cuda_buildtype_args = {'plain': [],
                        'debug': [],
                        'debugoptimized': [],