Commit fd9b55a640

Motiejus Jakštys <motiejus@jakstys.lt>
2022-07-20 13:31:04
build.zig: teach `--compress-debug-sections`
Now that #11863 is landed, let's expose it to the zig programs that build stuff via `build.zig`. "Benchmarks" with [turbonss](https://git.sr.ht/~motiejus/turbonss): Built with: $ zig build -Dtarget=x86_64-linux-gnu.2.19 -Dcpu=x86_64_v3 -Drelease-small=true *Debug, uncompressed* 174K turbonss-analyze 161K turbonss-getent 1.2M turbonss-unix2db 448K libnss_turbo.so.2.0.0 *Debug, compressed* 78K turbonss-analyze 86K turbonss-getent 572K turbonss-unix2db 190K libnss_turbo.so.2.0.0 *Stripped, for completeness* 17K turbonss-analyze 20K turbonss-getent 197K turbonss-unix2db 26K libnss_turbo.so.2.0.0
master
1 parent c1f3aca
Changed files (1)
lib
std
build.zig
lib/std/build.zig
@@ -1474,6 +1474,8 @@ pub const LibExeObjStep = struct {
     major_only_filename: ?[]const u8,
     name_only_filename: ?[]const u8,
     strip: bool,
+    // keep in sync with src/link.zig:CompressDebugSections
+    compress_debug_sections: enum { none, zlib } = .none,
     lib_paths: ArrayList([]const u8),
     rpaths: ArrayList([]const u8),
     framework_dirs: ArrayList([]const u8),
@@ -2688,6 +2690,12 @@ pub const LibExeObjStep = struct {
         if (self.strip) {
             try zig_args.append("--strip");
         }
+
+        switch (self.compress_debug_sections) {
+            .none => {},
+            .zlib => try zig_args.append("--compress-debug-sections=zlib"),
+        }
+
         if (self.link_eh_frame_hdr) {
             try zig_args.append("--eh-frame-hdr");
         }