diff --git a/tools/cmake2meson.py b/tools/cmake2meson.py
index 960cad935..24d8e4a02 100755
--- a/tools/cmake2meson.py
+++ b/tools/cmake2meson.py
@@ -22,12 +22,13 @@ class Lexer:
         self.token_specification = [
             # Need to be sorted longest to shortest.
             ('ignore', re.compile(r'[ \t]')),
-            ('id', re.compile('[_0-9a-z/A-Z.]+')),
+            ('id', re.compile('[-+_0-9a-z/A-Z.]+')),
             ('eol', re.compile(r'\n')),
             ('comment', re.compile(r'\#.*')),
             ('lparen', re.compile(r'\(')),
             ('rparen', re.compile(r'\)')),
             ('string', re.compile('"[^"]*?"')),
+            ('varexp', re.compile(r'\${[-_0-9a-z/A-Z.]+}')),
         ]
 
     def lex(self, code):
@@ -58,6 +59,8 @@ class Lexer:
                         yield('Id: ' + match_text)
                     elif tid == 'eol':
                         yield('eol')
+                    elif tid == 'varexp':
+                        yield('Variable:' + match_text[2:-1])
                     else:
                         raise RuntimeError('Wharrgarbl')
                     break