I solved the problem by moving all the include directives from bidon.h to bidon.c. :-) If anyone could explain why... thank you. Stephane -- View this message in context: http://www.nabble.com/how-to-include-some-dll-functions-in-a-project-tp20625105p20644010.html Sent from the gcc - Help mailing list archive at Nabble.com.