From 8145b0792f50366d1a2a0bfde3853ea3c56f0577 Mon Sep 17 00:00:00 2001
From: HanifKoh <76276251+HanifKoh@users.noreply.github.com>
Date: Sun, 11 Oct 2026 23:55:23 +0800
Subject: [PATCH] Free macOS Disk Space Only When the Build Might Not Fit
 (#16364)

---
 .github/workflows/build_orca.yml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/build_orca.yml b/.github/workflows/build_orca.yml
index 5797681d99..9ebc319bf9 100644
--- a/.github/workflows/build_orca.yml
+++ b/.github/workflows/build_orca.yml
@@ -179,6 +179,13 @@ jobs:
         if: runner.os == 'macOS' && !inputs.macos-combine-only && !vars.SELF_HOSTED
         run: |
           df -hI /
+          # Deleting the unused Xcodes takes minutes, so only do it when the
+          # build might not fit. A cold build uses under 4 GiB after this step.
+          avail_gib=$(df -g / | awk 'NR == 2 { print $4 }')
+          if [ "$avail_gib" -ge 15 ]; then
+            echo "$avail_gib GiB free, enough for the build"
+            exit 0
+          fi
           # Keep only the selected Xcode
           xcode=$(basename "$(cd "$(xcode-select -p)/../.." && pwd -P)")
           sudo find /Applications -maxdepth 1 -type d -name "Xcode_*.app" ! -name "$xcode" -exec rm -rf {} +