diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf3dde0f..0a5a89d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,21 +22,10 @@ set(BIN_INSTALL_DIR          "${EXEC_INSTALL_PREFIX}/bin"    CACHE PATH "The sub
 set(LIB_INSTALL_DIR          "${EXEC_INSTALL_PREFIX}/lib${LIB_SUFFIX}"     CACHE PATH "The subdirectory relative to the install prefix where libraries will be installed (default is /lib${LIB_SUFFIX})" FORCE)
 set(INCLUDE_INSTALL_DIR      "${CMAKE_INSTALL_PREFIX}/include"             CACHE PATH "The subdirectory to the header prefix" FORCE)
 
-if (CMAKE_COMPILER_IS_GNUCXX)
-   if (CMAKE_SYSTEM_NAME MATCHES Linux)
-     set ( CMAKE_C_FLAGS     "${CMAKE_C_FLAGS} -Wno-long-long -ansi -Wundef -Wcast-align -Werror-implicit-function-declaration -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -Wmissing-format-attribute -fno-common")
-     set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fno-check-new -fno-common")
-   endif (CMAKE_SYSTEM_NAME MATCHES Linux)
-endif (CMAKE_COMPILER_IS_GNUCXX)
-if(MSVC)
-  if (MSVC_VERSION GREATER 1399)
-    # If using Visual C++ 2005 (MSVC80) and greater (MSVC_VERSION=1400)
-    add_definitions(/D_CRT_SECURE_NO_DEPRECATE /D_CRT_NONSTDC_NO_DEPRECATE /Zc:wchar_t-)
-  endif (MSVC_VERSION GREATER 1399)
-endif(MSVC)
-if (WIN32)
-  set(CMAKE_DEBUG_POSTFIX "d")
-endif (WIN32)
+if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+endif()
 
 SET(TAGLIB_LIB_MAJOR_VERSION "1")
 SET(TAGLIB_LIB_MINOR_VERSION "7")