Hi, I noticed a strange problem today and wonder whether that's a gcc (or a packaging) bug. $ cat test.cpp #include <cstdlib> $ g++ -c -isystem /usr/include test.cpp In file included from test.cpp:1: /usr/include/c++/4.3/cstdlib:73:25: error: stdlib.h: No such file or directory ... $ g++ --version g++ (SUSE Linux) 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036] Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Same problem with: $ g++ --version g++ (Debian 4.3.2-1) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Version 4.1.2 is not affected. Strange, isn't it? I prepand -isystem to the Boost header path to reduce warnings and this path is on one of my boxes identical to /usr/include so I found this problem. Found a similar bug report but no proper solution (only a workaround): http://mailhost.cecs.pdx.edu/pipermail/icfpc08/2008-July/000126.html https://projects.cecs.pdx.edu/~jgmorris/icfpc08/index.cgi/ticket/9 PS: Please CC: me. Jens