From 0df9163aae75880dee8df83f68498a35f525776e Mon Sep 17 00:00:00 2001
From: Jordan Rose <jrose@signal.org>
Date: Thu, 17 Aug 2023 15:25:12 -0700
Subject: [PATCH] swift/build_ffi.sh: only set IPHONEOS_DEPLOYMENT_TARGET for
 iOS

Otherwise, local builds on macOS hosts try to build some CMake-based
dependencies for Catalyst.
---
 swift/build_ffi.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/swift/build_ffi.sh b/swift/build_ffi.sh
index ff52f527..c98c4463 100755
--- a/swift/build_ffi.sh
+++ b/swift/build_ffi.sh
@@ -11,7 +11,6 @@ SCRIPT_DIR=$(dirname "$0")
 cd "${SCRIPT_DIR}"/..
 . bin/build_helpers.sh
 
-export IPHONEOS_DEPLOYMENT_TARGET=13
 export CARGO_PROFILE_RELEASE_DEBUG=1 # enable line tables
 export CARGO_PROFILE_RELEASE_LTO=fat # use fat LTO to reduce binary size
 export CFLAGS="-DOPENSSL_SMALL ${CFLAGS:-}" # use small BoringSSL curve tables to reduce binary size
@@ -20,6 +19,10 @@ export CFLAGS="-DOPENSSL_SMALL ${CFLAGS:-}" # use small BoringSSL curve tables t
 export CFLAGS_aarch64_apple_ios_macabi="--target=arm64-apple-ios-macabi ${CFLAGS}"
 export CFLAGS_x86_64_apple_ios_macabi="--target=x86_64-apple-ios-macabi ${CFLAGS}"
 
+if [[ "${CARGO_BUILD_TARGET:-}" =~ -ios(-sim|-macabi)?$ ]]; then
+  export IPHONEOS_DEPLOYMENT_TARGET=13
+fi
+
 usage() {
   cat >&2 <<END
 Usage: $(basename "$0") [-d|-r] [-v] [--generate-ffi|--verify-ffi|--build-std]