updated build system

CMakeLists.txt

@@ -51,6 +51,10 @@ if(PROJECT_IS_ARM64)
   add_definitions(-DPROJECT_IS_ARM64)
 endif()
 
+if(PROJECT_IS_DARWIN)
+  add_definitions(-DPROJECT_IS_DARWIN)
+endif()
+
 if(PROJECT_IS_MINGW)
   option(PROJECT_ENABLE_WIN32_LONG_PATH_NAMES "Enable path sizes of 32767 characters on Windows" OFF)
   if(PROJECT_ENABLE_WIN32_LONG_PATH_NAMES)
@@ -115,6 +119,14 @@ if(PROJECT_BUILD)
     ${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}/version.cpp
     @ONLY
   )
+
+  if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}.iss.in")
+    configure_file(
+      ${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_NAME}.iss.in 
+      ${PROJECT_DIST_DIR}/../${PROJECT_NAME}.iss
+      @ONLY
+    )
+  endif()
 else()
   message(STATUS "-=[CMake Settings]=-")
   message(STATUS "  C standard: ${CMAKE_C_STANDARD}")
@@ -164,6 +176,7 @@ endif()
       -DPROJECT_INTERFACE=1
       -DPROJECT_IS_ALPINE=${PROJECT_IS_ALPINE}
       -DPROJECT_IS_ARM64=${PROJECT_IS_ARM64}
+      -DPROJECT_IS_DARWIN=${PROJECT_IS_DARWIN}
       -DPROJECT_IS_MINGW=${PROJECT_IS_MINGW}
       -DPROJECT_IS_MINGW_UNIX=${PROJECT_IS_MINGW_UNIX}
       -DPROJECT_MAJOR_VERSION=${PROJECT_MAJOR_VERSION}