Improve ABI check tool on macOS

test/make-shared-library.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 build_dir"
+    exit 1
+fi
+
+BUILD_DIR=$1
+
+# Make the build directory
+rm -rf $BUILD_DIR
+mkdir -p $BUILD_DIR/out
+
+cd $BUILD_DIR
+
+# Build the version
+git checkout $BUILD_DIR -q
+
+cmake \
+  -DCMAKE_BUILD_TYPE=Debug \
+  -DCMAKE_CXX_FLAGS="-g -Og" \
+  -DBUILD_SHARED_LIBS=ON \
+  -DHTTPLIB_COMPILE=ON \
+  -DCMAKE_INSTALL_PREFIX=./out \
+  ../..
+
+cmake --build . --target install
+cmake --build . --target clean
+