[OpenSIPS-Devel] [OpenSIPS/opensips] 337826: httpd: fix feature detection for older libraries

[Răzvan Crainea]

  Branch: refs/heads/3.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 3378261ef5e85615a19058886a8bea2651d0fe96
      https://github.com/OpenSIPS/opensips/commit/3378261ef5e85615a19058886a8bea2651d0fe96
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2021-08-19 (Thu, 19 Aug 2021)

  Changed paths:
    M modules/httpd/httpd.c

  Log Message:
  -----------
  httpd: fix feature detection for older libraries

Feature detection has been added in version 0.9.35, thus we can't
compile older version. However, when running cross compiling, we might
compile aginst an older version, but run with a newer one - that's why
we'd rather do the version detection at runtime - that's what this
commit does.

(cherry picked from commit e4065aaf3734409e05b59954057be4fed5d2479d)