Add sccache support.

1 files changed, 19 insertions, 0 deletions

diff --git a/mesonbuild/envconfig.py b/mesonbuild/envconfig.py
index 307aac3..2af45bf 100644
--- a/mesonbuild/envconfig.py
+++ b/mesonbuild/envconfig.py
@@ -385,6 +385,22 @@ class BinaryTable:
             return []
         return ['ccache']
 
+    @staticmethod
+    def detect_sccache() -> T.List[str]:
+        try:
+            subprocess.check_call(['sccache', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except (OSError, subprocess.CalledProcessError):
+            return []
+        return ['sccache']
+
+    @staticmethod
+    def detect_compiler_cache() -> T.List[str]:
+        # Sccache is "newer" so it is assumed that people would prefer it by default.
+        cache = BinaryTable.detect_sccache()
+        if cache:
+            return cache
+        return BinaryTable.detect_ccache()
+
     @classmethod
     def parse_entry(cls, entry: T.Union[str, T.List[str]]) -> T.Tuple[T.List[str], T.List[str]]:
         compiler = mesonlib.stringlistify(entry)
@@ -392,6 +408,9 @@ class BinaryTable:
         if compiler[0] == 'ccache':
             compiler = compiler[1:]
             ccache = cls.detect_ccache()
+        elif compiler[0] == 'sccache':
+            compiler = compiler[1:]
+            ccache = cls.detect_sccache()
         else:
             ccache = []
         # Return value has to be a list of compiler 'choices'