From 7c4505b2fd38f47be911b1ac0f517b9836c8ccb4 Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 26 Sep 2025 13:03:20 +0500
Subject: [PATCH] build_osx - exclude arm64 gmp dependency to avoid cross
 compilation issues

---
 .github/workflows/build_osx.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/build_osx.yml b/.github/workflows/build_osx.yml
index 971c1ee3f9..0338dde0f4 100644
--- a/.github/workflows/build_osx.yml
+++ b/.github/workflows/build_osx.yml
@@ -69,6 +69,9 @@ jobs:
           if [ "${{ matrix.arch }}" == "x64" ]; then
             arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
             MAC_INTEL=-mac-cross-compile-intel
+            # We don't use gmpcxx, but it comes preinstalled on macos runner as arm64 bottle
+            # and CGAL detects it and breaks cross compilation.
+            brew uninstall --ignore-dependencies gmp
           fi
           set -o pipefail
           CXXFLAGS="-O3" CFLAGS="-O3 ${DARWIN_C_SOURCE}" ADD_COMMIT_SHA=1 BUILD_CFG=Release \