The current autogen.sh script doesn't allow receiving quoted extra
options.
If someone wants to pass extra CFLAGS that is split into multiple
options with a whitespace, then a quote is required.
However, the configure inside autogen.sh fails in this case as follows.
$ ./autogen.sh CFLAGS="-Dmmap=cxl_mmap -Dmunmap=cxl_munmap"
autoconf
./configure --enable-autogen CFLAGS=-Dmmap=cxl_mmap -Dmunmap=cxl_munmap
configure: error: unrecognized option: `-Dmunmap=cxl_munmap'
Try `./configure --help' for more information
Error 0 in ./configure
It's because the quote discarded unexpectedly when calling configure.
This patch is to fix this problem.
Signed-off-by: Honggyu Kim <honggyu.kim@sk.com>
