diff --git a/SConscript b/SConscript
index fb02641..1448513 100644
--- a/SConscript
+++ b/SConscript
@@ -250,6 +250,8 @@ vars.Add('CC', 'The C Compiler', default_CC)
 vars.Add('CXX', 'The C++ Compiler', default_CXX)
 vars.Add('LINK', 'The Linker')
 vars.Add('CCFLAGS', 'C/C++ Compiler Flags')
+vars.Add('CFLAGS', 'C Compiler Flags')
+vars.Add('CXXFLAGS', 'C++ Compiler Flags')
 vars.Add('LINKFLAGS', 'Linker Flags')
 vars.Add('PYTHON', 'Python Executable', 'python')
 vars.Add('COMPILATIONDB_FILTER_FILES', 'Removes source files from the compilation DB that are not from the current project.', True)