安装glibc十分麻烦，还要检查版本的问题

[root@zhongzh-PC opt]# ./glibc-2.6.1/configure --prefix=/usr/local/glibc-2.6.1/
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
configure: running configure fragment for add-on nptl
checking sysdep dirs... sysdeps/x86_64/elf nptl/sysdeps/unix/sysv/linux/x86_64 sysdeps/unix/sysv/linux/x86_64 sysdeps/unix/sysv/linux/wordsize-64 nptl/sysdeps/unix/sysv/linux nptl/sysdeps/pthread sysdeps/pthread sysdeps/unix/sysv/linux sysdeps/gnu sysdeps/unix/common sysdeps/unix/mman sysdeps/unix/inet nptl/sysdeps/unix/sysv sysdeps/unix/sysv sysdeps/unix/x86_64 nptl/sysdeps/unix sysdeps/unix sysdeps/posix sysdeps/x86_64/fpu nptl/sysdeps/x86_64 sysdeps/x86_64 sysdeps/wordsize-64 sysdeps/ieee754/ldbl-96 sysdeps/ieee754/dbl-64 sysdeps/ieee754/flt-32 sysdeps/ieee754 sysdeps/generic/elf sysdeps/generic
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln -s works... yes
checking for gcc... gcc
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking how to run the C preprocessor... gcc -E
checking for g++... no
checking for c++... no
checking for gpp... no
checking for aCC... no
checking for CC... no
checking for cxx... no
checking for cc++... no
checking for cl... no
checking for FCC... no
checking for KCC... no
checking for RCC... no
checking for xlC_r... no
checking for xlC... no
checking whether we are using the GNU C++ compiler... no
checking whether g++ accepts -g... no
checking for ranlib... ranlib
checking whether as is GNU as... yes
checking whether ld is GNU ld... yes
checking for as... as
checking version of as... 2.20.51.0.2, bad
checking for ld... ld
checking version of ld... 2.20.51.0.2, bad
checking for pwd... /bin/pwd
checking for gcc... gcc
checking version of gcc... 4.4.4, ok
checking for gnumake... no
checking for gmake... gmake
checking version of gmake... 3.81, ok
checking for gnumsgfmt... no
checking for gmsgfmt... no
checking for msgfmt... msgfmt
checking version of msgfmt... 0.17, ok
checking for makeinfo... no
checking for sed... sed
checking version of sed... 4.2.1, ok
checking for autoconf... no
configure: error:
*** These critical programs are missing or too old: as ld
*** Check the INSTALL file for required versions.