如果你说的是lib库指的是C库的话，我想你可以在下面红色的目录下找到:
/usr/local/arm/4.3.2/bin/arm-none-linux-gnueabi-gcc -print-search-dirs
install: /usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/
programs: =/usr/local/arm/4.3.2/bin/../libexec/gcc/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../libexec/gcc/:/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/
libraries: =/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../lib/gcc/:/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/lib/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/lib/:/usr/local/arm/4.3.2/bin/../arm-none-linux-gnueabi/libc/lib/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../arm-none-linux-gnueabi/libc/lib/:/usr/local/arm/4.3.2/bin/../arm-none-linux-gnueabi/libc/usr/lib/arm-none-linux-gnueabi/4.3.2/:/usr/local/arm/4.3.2/bin/../arm-none-linux-gnueabi/libc/usr/lib/
