--- a/src/ccache.cpp
+++ b/src/ccache.cpp
-@@ -1815,6 +1815,7 @@ get_manifest_key(Context& ctx, Hash& has
- "CPLUS_INCLUDE_PATH",
- "OBJC_INCLUDE_PATH",
- "OBJCPLUS_INCLUDE_PATH", // clang
-+ "GCC_HONOUR_COPTS",
- nullptr};
+@@ -1843,6 +1843,7 @@ get_manifest_key(Context& ctx, Hash& has
+ "OBJCPLUS_INCLUDE_PATH", // Clang
+ "CLANG_CONFIG_FILE_SYSTEM_DIR", // Clang
+ "CLANG_CONFIG_FILE_USER_DIR", // Clang
++ "GCC_HONOUR_COPTS",
+ nullptr,
+ };
for (const char** p = envvars; *p; ++p) {
- const char* v = getenv(*p);