Following your instruction, I checked the libstdc++.so. But I don't know whether I've done the right check. first check the missing reference -bash-3.00$ /lab/home/zuoqi/gcc32/gcc-gnu-ccs/bin/g++ hello.cpp /var/tmp//ccz4peUZ.o: In function `main': hello.cpp:(.text+0x20): undefined reference to `std::cout' hello.cpp:(.text+0x24): undefined reference to `std::cout' hello.cpp:(.text+0x48): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))' collect2: ld returned 1 exit status find cout -bash-3.00$ nm /lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib/libstdc++.so|grep cout 000e1050 b _ZN14__gnu_internal13buf_cout_syncE 000e0db0 b _ZN14__gnu_internal14buf_wcout_syncE 000e0f48 b _ZN14__gnu_internal8buf_coutE 000e0ca0 b _ZN14__gnu_internal9buf_wcoutE 000e13e0 b _ZSt4cout 000e1198 B _ZSt5wcout find basic_ostream -bash-3.00$ nm /lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib/libstdc++.so|grep basic_ostream 00085ae0 W _ZNKSt13basic_ostreamIwSt11char_traitsIwEE6sentrycvbEv 00085798 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE3putEw 00084fec W _ZNSt13basic_ostreamIwSt11char_traitsIwEE5flushEv 000851f4 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE5seekpESt4fposI11__mbstate_tE 00085338 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE5seekpExSt12_Ios_Seekdir 000850cc W _ZNSt13basic_ostreamIwSt11char_traitsIwEE5tellpEv 00085610 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE5writeEPKwi 00085514 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE6sentryC1ERS2_ 00085514 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE6sentryC2ERS2_ 00085584 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE6sentryD1Ev 00085584 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE6sentryD2Ev 00084f94 W _ZNSt13basic_ostreamIwSt11char_traitsIwEE8_M_writeEPKwi 00087330 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIPKvEERS2_T_ 000867e0 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIbEERS2_T_ 00086e74 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIdEERS2_T_ 000870d8 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIeEERS2_T_ 00086310 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIlEERS2_T_ 0008659c t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertImEERS2_T_ 00086a0c t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIxEERS2_T_ 00086c40 t _ZNSt13basic_ostreamIwSt11char_traitsIwEE9_M_insertIyEERS2_T_ 00084e9c W _ZNSt13basic_ostreamIwSt11char_traitsIwEEC1EPSt15basic_streambufIwS1_E 00085480 W _ZNSt13basic_ostreamIwSt11char_traitsIwEEC1Ev 00084e70 W _ZNSt13basic_ostreamIwSt11char_traitsIwEEC2EPSt15basic_streambufIwS1_E 00085454 W _ZNSt13basic_ostreamIwSt11char_traitsIwEEC2Ev 00082638 W _ZNSt13basic_ostreamIwSt11char_traitsIwEED0Ev 00082588 W _ZNSt13basic_ostreamIwSt11char_traitsIwEED1Ev 00084f30 W _ZNSt13basic_ostreamIwSt11char_traitsIwEED2Ev 00084f48 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEPFRS2_S3_E 00084f78 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEPFRSt8ios_baseS4_E 00084f5c t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEPFRSt9basic_iosIwS1_ES5_E 00087550 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEPKv 00085944 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEPSt15basic_streambufIwS1_E 00086a00 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEb 000870cc t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEd 00087308 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEe 0008709c t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEf 00086530 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEi 000867bc t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEj 00086590 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEl 000867d4 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEm 0008653c t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEs 000867c8 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEt 00086c34 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEx 00086e68 t _ZNSt13basic_ostreamIwSt11char_traitsIwEElsEy 0006a278 W _ZNSt9basic_iosIwSt11char_traitsIwEE3tieEPSt13basic_ostreamIwS1_E 00083554 W _ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_i 00085c7c W _ZSt16__ostream_insertIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_PKS3_i 0008335c W _ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_ 00085ae8 W _ZSt4endlIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_ 000833e8 W _ZSt4endsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_ 00085b38 W _ZSt4endsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_ 000833f8 W _ZSt5flushIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_ 00085b48 W _ZSt5flushIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_ 00083aa0 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKa 000839a8 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc 00083a54 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKh 00083a14 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_a 000839f4 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_c 00083a34 W _ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_h 0008349c W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St12_Setiosflags 00083524 W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision 000834bc W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St14_Resetiosflags 0008353c W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St5_Setw 000834dc W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St8_Setbase 00083404 W _ZStlsIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_St8_SetfillIS3_E 000820c4 W _ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKSbIS4_S5_T1_E 0004bf04 W _ZStlsIdcSt11char_traitsIcEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 0004d718 W _ZStlsIdwSt11char_traitsIwEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 0004c7a4 W _ZStlsIecSt11char_traitsIcEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 0004d230 W _ZStlsIewSt11char_traitsIwEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 0004c350 W _ZStlsIfcSt11char_traitsIcEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 0004cd40 W _ZStlsIfwSt11char_traitsIwEERSt13basic_ostreamIT0_T1_ES6_RKSt7complexIT_E 000860a0 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_PKS3_ 0008610c W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_PKc 000860ec W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_S3_ 00085bc4 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St12_Setiosflags 00085c4c W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St13_Setprecision 00085be4 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St14_Resetiosflags 00085c64 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St5_Setw 00085c04 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St8_Setbase 00085b54 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_St8_SetfillIS3_E 000862b8 W _ZStlsIwSt11char_traitsIwEERSt13basic_ostreamIT_T0_ES6_c 00082430 W _ZStlsIwSt11char_traitsIwESaIwEERSt13basic_ostreamIT_T0_ES7_RKSbIS4_S5_T1_E 000dc340 d _ZTCSt13basic_fstreamIwSt11char_traitsIwEE8_St13basic_ostreamIwS1_E 000dc560 d _ZTCSt14basic_iostreamIwSt11char_traitsIwEE8_St13basic_ostreamIwS1_E 000dc2e0 d _ZTCSt14basic_ofstreamIwSt11char_traitsIwEE0_St13basic_ostreamIwS1_E 000dd0b0 d _ZTCSt18basic_stringstreamIwSt11char_traitsIwESaIwEE8_St13basic_ostreamIwS1_E 000dd050 d _ZTCSt19basic_ostringstreamIwSt11char_traitsIwESaIwEE0_St13basic_ostreamIwS1_E 000dcce0 V _ZTISt13basic_ostreamIwSt11char_traitsIwEE 000b50c8 V _ZTSSt13basic_ostreamIwSt11char_traitsIwEE 000dcd28 V _ZTTSt13basic_ostreamIwSt11char_traitsIwEE 000dcd30 V _ZTVSt13basic_ostreamIwSt11char_traitsIwEE 00082620 W _ZTv0_n12_NSt13basic_ostreamIwSt11char_traitsIwEED0Ev 00082570 W _ZTv0_n12_NSt13basic_ostreamIwSt11char_traitsIwEED1Ev 2011/4/19 Jonathan Wakely <jwakely.gcc@xxxxxxxxx>: > On 19 April 2011 13:09, Qi Zuo wrote: >> >> -bash-3.00$ /lab/home/zuoqi/gcc32/gcc-gnu-ccs/bin/g++ hello.cpp >> /var/tmp//ccDqluzK.o: In function `main': >> hello.cpp:(.text+0x20): undefined reference to `std::cout' >> hello.cpp:(.text+0x24): undefined reference to `std::cout' >> hello.cpp:(.text+0x48): undefined reference to >> `std::basic_ostream<char, std::char_traits<char> >>>::operator<<(std::basic_ostream<char, std::char_traits<char> >& >> (*)(std::basic_ostream<char, std::char_traits<char> >&))' >> collect2: ld returned 1 exit status >> >> the paths checked by -v as following >> >> -bash-3.00$ /lab/home/zuoqi/gcc32/gcc-gnu-ccs/bin/g++ hello.cpp -v >> Using built-in specs. >> COLLECT_GCC=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/bin/g++ >> COLLECT_LTO_WRAPPER=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/libexec/gcc/sparc-sun-solaris2.10/4.6.0/lto-wrapper >> Target: sparc-sun-solaris2.10 >> Configured with: ../gcc-4.6.0/configure ABI=32 >> --prefix=/lab/home/zuoqi/gcc32/gcc-gnu-ccs --with-gnu-as >> --with-as=/usr/local/bin/as --with-gnu-ld --with-ld=/usr/local/bin/ld >> --enable-languages=c,c++,java >> --with-gmp-include=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/include >> --with-gmp-lib=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib >> --with-mpfr-include=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/include >> --with-mpfr-lib=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib >> --with-mpc-include=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/include >> --with-mpc-lib=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib --without-ppl >> --without-cloog --enable-plugin --enable-lto >> Thread model: posix >> gcc version 4.6.0 (GCC) > ... >> LIBRARY_PATH=/lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib/gcc/sparc-sun-solaris2.10/4.6.0/:/usr/ccs/lib/:/lab/home/zuoqi/gcc32/gcc-gnu-ccs/lib/gcc/sparc-sun-solaris2.10/4.6.0/../../../:/lib/:/usr/lib/ > > > I suggest you look in these paths to find libstdc++.so and then run > 'nm' on it to see if it contains the missing symbols. > -- Regards Qi Zuo School Of Computer Science and Technology Beijng Institute of Technology, China, 100081
