initial commit

cmake/libraries/cxxopts.cmake

@@ -0,0 +1,23 @@
+if(PROJECT_ENABLE_CXXOPTS)
+  if(PROJECT_BUILD)
+    add_definitions(-DPROJECT_ENABLE_CXXOPTS)
+  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
+    ExternalProject_Add(cxxopts_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/cxxopts-v${CXXOPTS_VERSION}.tar.gz
+      URL_HASH SHA256=${CXXOPTS_HASH}
+      LIST_SEPARATOR |
+      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
+        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
+        -DBUILD_STATIC_LIBS=ON
+        -DCMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
+        -DCXXOPTS_BUILD_EXAMPLES=OFF
+        -DCXXOPTS_BUILD_TESTS=OFF
+        -DCXXOPTS_ENABLE_INSTALL=ON
+        -DCXXOPTS_ENABLE_WARNINGS=OFF
+        -DCXXOPTS_USE_UNICODE_HELP=ON
+    )
+
+    list(APPEND PROJECT_DEPENDENCIES cxxopts_project)
+  endif()
+endif()