start native C++ support for Octave, Maple and MathML

[lyx.git] / src / LString.h

diff --git a/src/LString.h b/src/LString.h
index daffa1e0fedd1669834a5559578fb24a93f79ecd..cc9df47947332242c7603f6af14be18f4fb9598e 100644 (file)
--- a/src/LString.h
+++ b/src/LString.h
@@ -12,6 +12,10 @@
 #ifndef LSTRING_H
 #define LSTRING_H 
 
+#ifndef _CONFIG_H
+#error The <config.h> header should always be included before LString.h
+#endif
+
 #ifndef USE_INCLUDED_STRING
 #include <string>
 using std::string;