Add b_thinlto_cache for automatically configuring incremental ThinLTO

1 files changed, 18 insertions, 0 deletions

diff --git a/mesonbuild/linkers/linkers.py b/mesonbuild/linkers/linkers.py
index 2f0fcda..27ccef3 100644
--- a/mesonbuild/linkers/linkers.py
+++ b/mesonbuild/linkers/linkers.py
@@ -456,6 +456,9 @@ class DynamicLinker(metaclass=abc.ABCMeta):
     def get_lto_args(self) -> T.List[str]:
         return []
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return []
+
     def sanitizer_args(self, value: str) -> T.List[str]:
         return []
 
@@ -813,6 +816,9 @@ class AppleDynamicLinker(PosixDynamicLinkerMixin, DynamicLinker):
 
         return (args, set())
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return ["-Wl,-cache_path_lto," + path]
+
 
 class GnuDynamicLinker(GnuLikeDynamicLinkerMixin, PosixDynamicLinkerMixin, DynamicLinker):
 
@@ -826,6 +832,9 @@ class GnuGoldDynamicLinker(GnuDynamicLinker):
 
     id = 'ld.gold'
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return ['-Wl,-plugin-opt,cache-dir=' + path]
+
 
 class GnuBFDDynamicLinker(GnuDynamicLinker):
 
@@ -836,6 +845,9 @@ class MoldDynamicLinker(GnuDynamicLinker):
 
     id = 'ld.mold'
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return ['-Wl,--thinlto-cache-dir=' + path]
+
 
 class LLVMDynamicLinker(GnuLikeDynamicLinkerMixin, PosixDynamicLinkerMixin, DynamicLinker):
 
@@ -862,6 +874,9 @@ class LLVMDynamicLinker(GnuLikeDynamicLinkerMixin, PosixDynamicLinkerMixin, Dyna
             return self._apply_prefix('--allow-shlib-undefined')
         return []
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return ['-Wl,--thinlto-cache-dir=' + path]
+
 
 class WASMDynamicLinker(GnuLikeDynamicLinkerMixin, PosixDynamicLinkerMixin, DynamicLinker):
 
@@ -1304,6 +1319,9 @@ class ClangClDynamicLinker(VisualStudioLikeLinkerMixin, DynamicLinker):
     def get_win_subsystem_args(self, value: str) -> T.List[str]:
         return self._apply_prefix([f'/SUBSYSTEM:{value.upper()}'])
 
+    def get_thinlto_cache_args(self, path: str) -> T.List[str]:
+        return ["/lldltocache:" + path]
+
 
 class XilinkDynamicLinker(VisualStudioLikeLinkerMixin, DynamicLinker):