Hi I'm not able to build Gambit with C++ support, having problem with 4.6.7 and 4.6.8. Building on ubuntu 32bit. Full log is attached but here are the relevant parts: gcc 4.7.2 Both configure commands produce same error: ./configure --enable-single-host --enable-cplusplus --enable-c-opt ./configure --enable-single-host --enable-cplusplus g++ -Wno-unused -Wno-write-strings -O2 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC -fno-common -mieee-fp -I"../include" -c -o "os_io.o" -I. -DHAVE_CONFIG_H -D___GAMBCDIR="\"/usr/local/Gambit-C\"" -D___SYS_TYPE_CPU="\"i686\"" -D___SYS_TYPE_VENDOR="\"pc\"" -D___SYS_TYPE_OS="\"linux-gnu\"" -D___CONFIGURE_COMMAND="\"./configure '--enable-single-host' '--enable-c-opt' '--enable-cplusplus'"\" -D___OBJ_EXTENSION="\".o\"" -D___EXE_EXTENSION="\"\"" -D___BAT_EXTENSION="\"\"" -D___PRIMAL os_io.c -D___LIBRARY In file included from os_base.h:8:0, from os_io.c:14: os.h:1113:0: warning: "__USE_LARGEFILE64" redefined [enabled by default] In file included from /usr/include/limits.h:27:0, from /usr/lib/gcc/i686-linux-gnu/4.7/include-fixed/limits.h:169, from /usr/lib/gcc/i686-linux-gnu/4.7/include-fixed/syslimits.h:7, from /usr/lib/gcc/i686-linux-gnu/4.7/include-fixed/limits.h:34, from ../include/gambit.h:473, from os_io.c:12: /usr/include/features.h:281:0: note: this is the location of the previous definition os_io.c: In function ‘int ___device_select(___device**, int, int, ___time)’: os_io.c:1089:62: error: ‘___absolute_time_to_nonnegative_timeval’ was not declared in this scope os_io.c: In function ‘int ___device_stream_setup_from_process(___device_stream**, ___device_group*, char**, char**, char*, int)’: os_io.c:7201:77: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’, declared with attribute warn_unused_result [-Wunused-result] make[1]: *** [os_io.o] Error 1