今天用友善之臂提供的arm-linux-gcc 4.5.1编译链接一个动态链接库 遇到一下报错信息：
root@wing:/mnt/hgfs/work/ARM-EXAMPLE# make
arm-linux-gcc pubsync.c -o pubsync libmqttv3c.so -lpthread
libmqttv3c.so: undefined reference to `realloc@GLIBC_2.0'
libmqttv3c.so: undefined reference to `stdout@GLIBC_2.0'
libmqttv3c.so: undefined reference to `inet_ntop@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fgets@GLIBC_2.0'
libmqttv3c.so: undefined reference to `mkdir@GLIBC_2.0'
libmqttv3c.so: undefined reference to `readdir@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_mutex_init@GLIBC_2.0'
libmqttv3c.so: undefined reference to `memset@GLIBC_2.0'
libmqttv3c.so: undefined reference to `shutdown@GLIBC_2.0'
libmqttv3c.so: undefined reference to `difftime@GLIBC_2.0'
libmqttv3c.so: undefined reference to `closedir@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strrchr@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strncpy@GLIBC_2.0'
libmqttv3c.so: undefined reference to `writev@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strerror@GLIBC_2.0'
libmqttv3c.so: undefined reference to `recv@GLIBC_2.0'
libmqttv3c.so: undefined reference to `getsockopt@GLIBC_2.0'
libmqttv3c.so: undefined reference to `usleep@GLIBC_2.0'
libmqttv3c.so: undefined reference to `vsnprintf@GLIBC_2.0'
libmqttv3c.so: undefined reference to `select@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strcmp@GLIBC_2.0'
libmqttv3c.so: undefined reference to `getaddrinfo@GLIBC_2.0'
libmqttv3c.so: undefined reference to `__lxstat@GLIBC_2.0'
libmqttv3c.so: undefined reference to `localtime@GLIBC_2.0'
libmqttv3c.so: undefined reference to `ftell@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fcntl@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strftime@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strtok_r@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strchr@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_cond_destroy@GLIBC_2.3.2'
libmqttv3c.so: undefined reference to `fwrite@GLIBC_2.0'
libmqttv3c.so: undefined reference to `getenv@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fseek@GLIBC_2.0'
libmqttv3c.so: undefined reference to `__xstat@GLIBC_2.0'
libmqttv3c.so: undefined reference to `rename@GLIBC_2.0'
libmqttv3c.so: undefined reference to `malloc@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strstr@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strncmp@GLIBC_2.0'
libmqttv3c.so: undefined reference to `freeaddrinfo@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fflush@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fread@GLIBC_2.0'
libmqttv3c.so: undefined reference to `stderr@GLIBC_2.0'
libmqttv3c.so: undefined reference to `memcpy@GLIBC_2.0'
libmqttv3c.so: undefined reference to `rmdir@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strlen@GLIBC_2.0'
libmqttv3c.so: undefined reference to `close@GLIBC_2.0'
libmqttv3c.so: undefined reference to `__errno_location@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_self@GLIBC_2.0'
libmqttv3c.so: undefined reference to `signal@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_cond_timedwait@GLIBC_2.3.2'
libmqttv3c.so: undefined reference to `fopen@GLIBC_2.1'
libmqttv3c.so: undefined reference to `remove@GLIBC_2.0'
libmqttv3c.so: undefined reference to `connect@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_mutex_lock@GLIBC_2.0'
libmqttv3c.so: undefined reference to `socket@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_cond_signal@GLIBC_2.3.2'
libmqttv3c.so: undefined reference to `time@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fprintf@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_mutex_destroy@GLIBC_2.0'
libmqttv3c.so: undefined reference to `atoi@GLIBC_2.0'
libmqttv3c.so: undefined reference to `strcpy@GLIBC_2.0'
libmqttv3c.so: undefined reference to `getpeername@GLIBC_2.0'
libmqttv3c.so: undefined reference to `opendir@GLIBC_2.0'
libmqttv3c.so: undefined reference to `sprintf@GLIBC_2.0'
libmqttv3c.so: undefined reference to `exit@GLIBC_2.0'
libmqttv3c.so: undefined reference to `snprintf@GLIBC_2.0'
libmqttv3c.so: undefined reference to `pthread_cond_init@GLIBC_2.3.2'
libmqttv3c.so: undefined reference to `pthread_mutex_unlock@GLIBC_2.0'
libmqttv3c.so: undefined reference to `gettimeofday@GLIBC_2.0'
libmqttv3c.so: undefined reference to `unlink@GLIBC_2.0'
libmqttv3c.so: undefined reference to `free@GLIBC_2.0'
libmqttv3c.so: undefined reference to `fclose@GLIBC_2.1'
collect2: ld returned 1 exit status
make: *** [all] 错误 1
查看了下arm-linux-gcc的信息 如下：
root@wing:~# arm-linux-gcc -v
Using built-in specs.
COLLECT_GCC=arm-linux-gcc
COLLECT_LTO_WRAPPER=/usr/arm-linux-gcc-4.5.1/bin/../libexec/gcc/arm-none-linux-gnueabi/4.5.1/lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /work/toolchain/build/src/gcc-4.5.1/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-none-linux-gnueabi --prefix=/opt/FriendlyARM/toolschain/4.5.1 --with-sysroot=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi/sys-root --enable-languages=c,c++ --disable-multilib --with-cpu=arm1176jzf-s --with-tune=arm1176jzf-s --with-fpu=vfp --with-float=softfp --with-pkgversion=ctng-1.8.1-FA --with-bugurl=http://www.arm9.net/ --disable-sjlj-exceptions --enable-__cxa_atexit --disable-libmudflap --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-gmp=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-mpfr=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-ppl=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-cloog=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-mpc=/work/toolchain/build/arm-none-linux-gnueabi/build/static --with-libelf=/work/toolchain/build/arm-none-linux-gnueabi/build/static --enable-threads=posix --with-local-prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi/sys-root --disable-nls --enable-symvers=gnu --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.5.1 (ctng-1.8.1-FA)
不知道是不是因为友善之臂没有吧glibc库编译到gcc里面，
有没有哪位仁兄遇到过类似问题，或者知道原因的 希望共同探讨下
不胜感激！！！！！！！！
