diff --git a/cmake/modules/CompileWarnings.cmake b/cmake/modules/CompileWarnings.cmake
index 93b35b8..8f5d54e 100644
--- a/cmake/modules/CompileWarnings.cmake
+++ b/cmake/modules/CompileWarnings.cmake
@@ -12,4 +12,17 @@
     elseif(UNIX AND APPLE)
         target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:CXX>:-Wno-deprecated-anon-enum-enum-conversion>)
     endif()
+
+    # Suppress warning "enumeration types with a fixed underlying type are a
+    # Clang extension"
+    if(APPLE)
+      target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C>:-Wno-fixed-enum-extension>)
+    endif()
+
+    # Compress debug info with GCC
+    if ((${CMAKE_BUILD_TYPE} STREQUAL "Debug" OR
+         ${CMAKE_BUILD_TYPE} STREQUAL "RelWithDebInfo") AND
+        ${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU")
+      target_compile_options(${target} PRIVATE -gz=zlib)
+    endif()
 endmacro()