clang未能连接2线主功能程序

我很容易得到clang，这就是当我尝试编译简单的2行程序时会发生的事情:(我在机器上有g，IDK，如果这是问题的原因）

clang teststring.cpp -v Ubuntu clang version 3.0-6ubuntu3（tags / RELEASE_30 / final）（基于LLVM 3.0）目标：i386-pc-linux-gnu线程模型：posix“/ usr / bin / clang”-cc1 - triple i386-pc-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name teststring.cpp -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -target-cpu pentium4 -target-linker-version 2.22 -momit-leaf-frame-pointer -v -resource-dir /usr/bin/../lib/clang/3.0 -fmodule-cache-path / var / tmp / clang-module-cache -internal-isystem / usr / include / c /4.6 -internal-isystem / usr / include / c /4.6/i686-linux-gnu -internal-isystem / usr / include / c / 4.6 / backward -internal-isystem / usr / local / include -internal-isystem /usr/bin/../lib/clang/3.0/include -internal-externc-isystem / usr / include / i686-linux-gnu -internal -externc-isystem / usr / include -fdeprecated-macro -ferror-limit 19 -fmessage-length 80 -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi -fcxx -e xceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/teststring-e3FNx4.o-xc teststring.cpp clang -cc1 version 3.0 on based llvm 3.0 on i386-pc-linux-gnu忽略不存在的目录“ / usr / include / i686-linux-gnu“忽略不存在的目录”/ usr / include / c /4.6//i686-linux-gnu/32“忽略不存在的目录”/ usr / include / i686-linux-gnu /“忽略不存在的目录“/ usr / include / i686-linux-gnu”忽略重复目录“/ usr / include / c /4.6”忽略重复目录“/ usr / include / c /4.6/i686-linux-gnu”忽略重复目录“ / usr / include / c /4.6/backward“忽略重复目录”/ usr / include / c /4.6“忽略重复目录”/ usr / include / c /4.6/backward“忽略重复目录”/ usr / include / c / 4.6“忽略重复目录”/ usr / include / c /4.6/i686-linux-gnu“忽略重复目录”/ usr / include / c /4.6/backward“忽略重复目录”/ usr / local / include“忽略重复目录“ /usr/bin/../lib/clang/3.0/include“忽略重复目录”/ usr / include“include”...“搜索从这里开始：include <...>搜索从这里开始：/ usr / include / c /4.6 / usr / include / c /4.6/i686-linux-gnu / usr / include / c /4.6/backward / usr / local / include /usr/bin/../lib/clang/3.0/include / usr / include / usr / include / i386-linux-gnu / /usr/include/clang/3.0/include/ /usr/lib/gcc/i686-linux-gnu/4.6/include/ / usr / lib / gcc / i686- linux-gnu / 4.6 / include-fixed /搜索结束列表 . “/ usr / bin / ld”-z relro --hash-style = gnu --as-needed --build-id --eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so .2 -o a.out /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crt1.o / usr / lib / gcc / i686-linux -gnu / 4.6 /../../../ i386-linux-gnu / crti.o /usr/lib/gcc/i686-linux-gnu/4.6/crtbegin.o -L / usr / lib / gcc / i686-linux-gnu / 4.6 -L / usr / lib / gcc / i686-linux-gnu / 4.6 /../../../ i386-linux-gnu -L / lib / i386-linux-gnu -L / usr / lib / i386-linux-gnu -L / usr / lib / gcc / i686-linux-gnu / 4.6 /../../../ i386-linux-gnu -L / usr / lib / gcc / i686-linux-gnu / 4.6 /../../ .. -L / lib / i386-linux-gnu -L / lib -L / usr / lib / i386-linux-gnu -L / usr / lib / tmp /teststring-e3FNx4.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed / usr / lib / gcc / i686-linux -gnu / 4.6 / crtend.o /usr/lib/gcc/i686-linux-gnu/4.6/../../../i386-linux-gnu/crtn.o /tmp/teststring-e3FNx4.o:在函数main'：teststring.cpp :( . text 0x18）：未定义引用std :: basic_string，std :: allocator :: basic_string（）'teststring.cpp :( . text 0x2b ）：未定义引用std :: string :: operator =（char const *）'teststring.cpp :( . text 0x3e）：undefined reference tostd :: basic_string，std :: allocator> :: ~basic_string（）'teststring . cpp :( . text 0x58）：未定义引用std :: basic_string <char，std :: char_traits <char>，std :: allocator <char> :: ~basic_string（）'teststring.cpp :( . text 0x79）： undefined reference tostd :: terminate（）'/ tmp /teststring-e3FNx4.o :(.eh_frame 0x13）：未定义引用`__gxx_personality_v0'clang：错误：链接器命令失败，退出代码为1（使用-v查看调用）

附：对于好奇的节目是：

#include <string>
int main()
{
        std::string s;
        s+="banana";
}