Fix ABI compatibility tool on macOS

Author: yhirose

test/check-shared-library-abi-compatibility.sh

@@ -37,6 +37,7 @@ cmake \
   -DCMAKE_INSTALL_PREFIX=./out \
   ../../.. > /dev/null
 
+git stash
 git checkout -q "${PREVIOUS_VERSION}"
 cmake --build . --target install > /dev/null
 cmake --build . --target clean > /dev/null
@@ -49,10 +50,16 @@ if [ "$CURRENT_COMMIT" = "$(git rev-parse master)" ]; then
 else
   git checkout -q "${CURRENT_COMMIT}"
 fi
+git stash pop
 
 # ABI compatibility check
-../check-abi-compatibility.sh ./old/out/lib/libcpp-httplib.so ./new/out/lib/libcpp-httplib.so
-
-# Clean the build directory
-cd ..
-rm -rf $BUILD_DIR
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+  ../check-abi-compatibility.sh ./old/out/lib/libcpp-httplib.so ./new/out/lib/libcpp-httplib.so
+  exit $?
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+  ../check-abi-compatibility.sh ./old/out/lib/libcpp-httplib.dylib ./new/out/lib/libcpp-httplib.dylib
+  exit $?
+else
+  echo "Unknown OS..."
+  exit 1
+fi