gnat 为了gcc

checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to accept ANSI C... (cached) none needed
checking how to run the C preprocessor... (cached) gcc -E
configure: error: C preprocessor "gcc -E" fails sanity check
See `config.log' for more details.
make[1]: *** [configure-build-libiberty] 错误 1
make[1]: Leaving directory `/home/HASEE/gnat/gcc-4.1.3'
make: *** [all] 错误 2

在./configure
gcc-4.1.3 GNAT时

gcc-gnat libgnat .rpm安装时不能用
为了安装gcc源码