From 976ab33fb4b262155f518713019e0a8e7b788c9e Mon Sep 17 00:00:00 2001
From: Kirill Bulatov <kirill@zed.dev>
Date: Wed, 7 Oct 2026 14:56:09 +0000
Subject: [PATCH] Reduce release binary sizes (#65168)

Not sure how worth such optimization is WRT the speed, but for such
gains, seems worth opening to discuss?

-----------

Optimize selected workspace crates for size and hide Rust exports in
macOS bundles.

Measurements (release editor executable size):

| Platform | Architecture | Before (bytes) | After (bytes) | Reduction
(bytes / %) |
| --- | --- | ---: | ---: | ---: |
| macOS | ARM64 | 258,218,240 | 172,524,896 | 85,693,344 / 33.19% |
| Linux | x86_64 | 317,435,136 | 295,344,952 | 22,090,184 / 6.96% |
| Windows | x86_64 | 358,987,776 | 256,678,400 | 102,309,376 / 28.50% |


Release Notes:

- Reduced Zed's binary size
---
 .cargo/bundle-config.toml | 26 ++++++++++++++++++++++++++
 script/bundle-mac         |  7 ++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/.cargo/bundle-config.toml b/.cargo/bundle-config.toml
index 0fc6a68ff96..f00d66614f0 100644
--- a/.cargo/bundle-config.toml
+++ b/.cargo/bundle-config.toml
@@ -1,3 +1,29 @@
+[profile.release]
+opt-level = "z"
+
+[profile.release.package]
+"*" = { opt-level = 3 }
+cli = { opt-level = 3 }
+editor = { opt-level = 3 }
+gpui = { opt-level = 3 }
+gpui_apple = { opt-level = 3 }
+gpui_linux = { opt-level = 3 }
+gpui_macos = { opt-level = 3 }
+gpui_platform = { opt-level = 3 }
+gpui_shared_string = { opt-level = 3 }
+gpui_util = { opt-level = 3 }
+gpui_wgpu = { opt-level = 3 }
+gpui_windows = { opt-level = 3 }
+language = { opt-level = 3 }
+multi_buffer = { opt-level = 3 }
+project = { opt-level = 3 }
+remote_server = { opt-level = 3 }
+rope = { opt-level = 3 }
+scheduler = { opt-level = 3 }
+sum_tree = { opt-level = 3 }
+text = { opt-level = 3 }
+zed = { codegen-units = 1 }
+
 [target.'cfg(target_os = "linux")']
 rustflags = ["-C", "link-args=-Wl,--disable-new-dtags,-rpath,$ORIGIN/../lib"]
 
diff --git a/script/bundle-mac b/script/bundle-mac
index 44f36aa1b69..e00632cc50f 100755
--- a/script/bundle-mac
+++ b/script/bundle-mac
@@ -91,7 +91,12 @@ script/generate-licenses
 rustup target add $target_triple
 
 echo "Compiling zed binaries"
-cargo --config .cargo/bundle-config.toml build ${build_flag} ${zed_features} --package zed --package cli --target $target_triple
+if [[ "$target_dir" = "release" ]]; then
+    cargo --config .cargo/bundle-config.toml rustc ${build_flag} ${zed_features} --package zed --bin zed --target $target_triple -- -C 'link-arg=-Wl,-unexported_symbol,__R*'
+    cargo --config .cargo/bundle-config.toml build ${build_flag} --package cli --target $target_triple
+else
+    cargo --config .cargo/bundle-config.toml build ${build_flag} ${zed_features} --package zed --package cli --target $target_triple
+fi
 # Build remote_server in separate invocation to prevent feature unification from other crates
 # from influencing dynamic libraries required by it.
 cargo --config .cargo/bundle-config.toml build ${build_flag} ${remote_server_features} --package remote_server --target $target_triple