From d63d9b99185c080c6ed7a6be3dc43c897f2aeadc Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Sat, 17 Aug 2024 10:18:54 +0100
Subject: [PATCH] compiler: use incremental cache mode with -fincremental

This results in correct reporting to the build system of file system
inputs with `-fincremental --watch` on a `fno-emit-bin` build.
---
 src/main.zig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index 62c721f1575a585b7a69272693ac03fe444c4b54..3429500bf8157624e2acf30a460f2858559c4b13 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -3257,9 +3257,12 @@ fn buildOutputType(
         else => false,
     };
 
+    const incremental = opt_incremental orelse false;
+
     const disable_lld_caching = !output_to_cache;
 
     const cache_mode: Compilation.CacheMode = b: {
+        if (incremental) break :b .incremental;
         if (disable_lld_caching) break :b .incremental;
         if (!create_module.resolved_options.have_zcu) break :b .whole;
 
@@ -3272,8 +3275,6 @@ fn buildOutputType(
         break :b .incremental;
     };
 
-    const incremental = opt_incremental orelse false;
-
     process.raiseFileDescriptorLimit();
 
     var file_system_inputs: std.ArrayListUnmanaged(u8) = .{};
-- 
2.54.0