stage2: default dynamic libraries to be linked as needed

After this change, the default for dynamic libraries (`-l` or
`--library`) is to only link them if they end up being actually used.

With the Zig CLI, the new options `-needed-l` or `--needed-library` can
be used to force link against a dynamic library.

With `zig cc`, this behavior can be overridden with `-Wl,--no-as-needed`
(and restored with `-Wl,--as-needed`).

Closes #10164

1 files changed, 0 insertions, 8 deletions

diff --git a/src/Cache.zig b/src/Cache.zig
index 7d3bfdc3f2..3ae6c0d5d5 100644
--- a/src/Cache.zig
+++ b/src/Cache.zig
@@ -90,14 +90,6 @@ pub const HashHelper = struct {
         for (list_of_bytes) |bytes| hh.addBytes(bytes);
     }
 
-    pub fn addStringSet(hh: *HashHelper, hm: std.StringArrayHashMapUnmanaged(void)) void {
-        const keys = hm.keys();
-        hh.add(keys.len);
-        for (keys) |key| {
-            hh.addBytes(key);
-        }
-    }
-
     /// Convert the input value into bytes and record it as a dependency of the process being cached.
     pub fn add(hh: *HashHelper, x: anytype) void {
         switch (@TypeOf(x)) {