I'm trying to compile an executable with the following command: g++ -Wall -pedantic -g -O3 -DDEBUG -march=native -std=c++0x -lboost_regex -o wrapCMCC wrapCMCC.cpp On an Ubuntu machine with GCC 4.5.2 and BOOST-1.42.0 I can compile without problems. But on a CentOS Linux using GCC 4.4.4 and BOOST-1.46.1 I obtain this error: In file included from /usr/include/boost/mpl/bind.hpp:27, from /usr/include/boost/mpl/lambda.hpp:18, from /usr/include/boost/mpl/iter_fold.hpp:20, from /usr/include/boost/variant/detail/initializer.hpp:27, from /usr/include/boost/variant/variant.hpp:28, from /usr/include/boost/variant.hpp:17, from cmdLine.cpp:31, from wrapCMCC.cpp:1: /usr/include/boost/mpl/apply_wrap.hpp:81:31: error: missing binary operator before token "(" /usr/include/boost/mpl/apply_wrap.hpp:173:31: error: missing binary operator before token "(" ... What does this message means? Thanks in advance... -- Alessandro Candini MEEO S.r.l. Via Saragat 9 I-44122 Ferrara, Italy Tel: +39 0532 1861501 Fax: +39 0532 1861637 http://www.meeo.it ======================================== "ATTENZIONE:le informazioni contenute in questo messaggio sono da considerarsi confidenziali ed il loro utilizzo è riservato unicamente al destinatario sopra indicato. Chi dovesse ricevere questo messaggio per errore è tenuto ad informare il mittente ed a rimuoverlo definitivamente da ogni supporto elettronico o cartaceo." "WARNING:This message contains confidential and/or proprietary information which may be subject to privilege or immunity and which is intended for use of its addressee only. Should you receive this message in error, you are kindly requested to inform the sender and to definitively remove it from any paper or electronic format."