Hi, There's a problem on HP-UX (especially hppa2.0w-hp-hpux11.11) with gcc-3.3.6, where localtime_r and gmtime_r are not in namespace std. boost-1.33 itself is built with "<cxxflags>-pthread/<linkflags>-pthread" $ cat xx.cc #include <boost/date_time/posix_time/posix_time_system.hpp> $ g++ -pthread xx.cc In file included from /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/date_clock_device.hpp:12, from /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/gregorian/gregorian_types.hpp:26, from /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/posix_time/posix_time_config.hpp:14, from /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/posix_time/posix_time_system.hpp:13, from xx.cc:1: /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/c_time.hpp: In static member function `static tm* boost::date_time::c_time::localtime(const time_t*, tm*)': /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/c_time.hpp:56: error: ` localtime_r' undeclared in namespace `std' /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/c_time.hpp: In static member function `static tm* boost::date_time::c_time::gmtime(const time_t*, tm*)': /tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/boost/include/boost/date_time/c_time.hpp:64: error: ` gmtime_r' undeclared in namespace `std' $ $ gcc -v Reading specs from /mnt/toolsjunk/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/lib/gcc-lib/hppa2.0w-hp-hpux11.11/3.3.6/specs Configured with: /mnt/toolsjunk/snapshot/src/sasrvb/toolsbox-3.5.0.16rc.20050904/buildroot/gcc/gcc-3.3.6/configure --with-gnu-as --with-as=/tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX/hppa2.0w-hp-hpux11.11/bin/as --without-gnu-ld --with-ld=/usr/ccs/bin/ld --enable-threads=posix --with-local-prefix=/tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX --disable-nls --prefix=/tools/snapshot/toolsbox-3.5.0.16rc.20050904/HP-UX Thread model: posix gcc version 3.3.6 Two maybe interesting notes: 1) /usr/include/time.h only declares localtime_r/gmtime_r if '-pthread' compiler-flag is used (and therefore _REENTRANT is defined). 2) gcc-shipped <ctime> does not pull localtime_r/gmtime_r into namespace std Thanks! ~haubi -- Michael Haubenwallner SALOMON Automation GmbH Forschung & Entwicklung A-8114 Friesach bei Graz mailto:michael.haubenwallner@salomon.at http://www.salomon.at No HTML/MIME please, see http://expita.com/nomime.html