Off topic:Can not find readline library when installing R

Question

[Ct586]

Hi, all,

When I was configuring R (R-3.2.0 and R-3.1.1), I met the following problems.

checking readline/history.h usability... yes
checking readline/history.h presence... yes
checking for readline/history.h... yes
checking readline/readline.h usability... yes
checking readline/readline.h presence... yes
checking for readline/readline.h... yes
checking for rl_callback_read_char in -lreadline... no
checking for main in -lncurses... no
checking for main in -ltermcap... no
checking for main in -ltermlib... no
checking for rl_callback_read_char in -lreadline... no
checking for history_truncate_file... no
configure: error: --with-readline=yes (default) and headers/libs are not available

However, I have readline installed in ~/softwares/readline-6.3/install, and ~/softwares/readline-6.3/install/lib in LD_LIBRARY_PATH, and ~/softwares/readline-6.3/install/include in C_INCLUDE_PATH.

Files listed as below:

bin  include  lib  share

./bin:

./include:
readline

./include/readline:
chardefs.h  history.h  keymaps.h  readline.h  rlconf.h  rlstdc.h  rltypedefs.h  tilde.h

./lib:
libhistory.a  libhistory.so  libhistory.so.6  libhistory.so.6.3  libreadline.a  libreadline.so  libreadline.so.6  libreadline.so.6.3  readline.so

Here is another error, I wonder if there is anything wrong about libreadline.so.

$ ld readline-6.3/install/lib/libreadline.so
ld: warning: cannot find entry symbol _start; not setting start address
readline-6.3/install/lib/libreadline.so: undefined reference to `PC'
readline-6.3/install/lib/libreadline.so: undefined reference to `tgetflag'
readline-6.3/install/lib/libreadline.so: undefined reference to `tgetent'
readline-6.3/install/lib/libreadline.so: undefined reference to `UP'
readline-6.3/install/lib/libreadline.so: undefined reference to `tputs'
readline-6.3/install/lib/libreadline.so: undefined reference to `tgoto'
readline-6.3/install/lib/libreadline.so: undefined reference to `tgetnum'
readline-6.3/install/lib/libreadline.so: undefined reference to `BC'
readline-6.3/install/lib/libreadline.so: undefined reference to `tgetstr

My operation system is:

Linux version 2.6.32-358.el6.x86_64 ([e-mail]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC) ) #1 SMP Fri Feb 22 00:31:26 UTC 2013

I wonder why configure of R can not find the libreadline.so?

Thanks for the help!

Chen Tong