the OS shows ld is resolved to GNU ld:
$ which ld
/home/alelai/binutils-2.25/bin/ld

not sure why configure script pick up the ccs version.
I tried:
export LD=/home/alelai/binutils-2.25/bin/ld

configure shows:
...
checking if the linker (/home/alelai/binutils-2.25/bin/ld) is GNU ld... yes
...
(please see the attached new config.log.20160107)

But the error occurred:

Assembler:

"/var/tmp//ccFCDwOq.s", line 25 : Syntax error
Near line: " addl $(Loop-L0-3),%eax"

Makefile:590: recipe for target 'mpih-add1-asm.lo' failed
make[2]: * [mpih-add1-asm.lo] Error 1
make[2]: Leaving directory '/home/alelai/libgcrypt-1.6.4.src/mpi'
Makefile:477: recipe for target 'all-recursive' failed
make[1]: * [all-recursive] Error 1
make[1]: Leaving directory '/home/alelai/libgcrypt-1.6.4.src'
Makefile:408: recipe for target 'all' failed
make: *** [all] Error 2

due to pth-2.0.7/bin not being added to PATH