version string comparison

[Thien-Thi Nguyen]

In GNUnet configure.ac, there is the fragment:

 # test for libunistring
 gl_LIBUNISTRING
 AS_IF([test "x$gl_libunistring_hexversion" = "x" || test 
"$gl_libunistring_hexversion" -le 2305],
       [AC_MSG_ERROR([GNUnet requires libunistring >= 0.9.1.1])])

that uses the var ‘gl_libunistring_hexversion’ which is
undocumented (IIUC).  OTOH, var ‘LIBUNISTRING_VERSION’ is
indeed documented, and has value something like "0.9.10".

Is there any Autoconf support for comparing these two version
strings: "0.9.1.1" and "0.9.10"?

-- 
Thien-Thi Nguyen -----------------------------------------------
 (defun responsep (query)               ; (2021) Software Libero
   (pcase (context query)               ;       = Dissenso Etico
     (`(technical ,ml) (correctp ml))
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--------------------------------------- 6CE4 6703 2224 4C80 7502

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