* pjproject is now configured with --disable-libsrtp so it will
build correctly when doing "out-of-tree" development. Asterisk
doesn't use pjproject for handling media so pjproject doesn't
need libsrtp itself.
* The pjsua app (which we used to use for the testsuite) no longer
builds in pjproject's master branch so we just skip it. The
testsuite no longer needs it anyway.
See third-party/pjproject/README-hacking.md for more info on building
pjproject "out-of-tree".
(cherry picked from commit 97ad7256d7)
There are times when you need to troubleshoot issues with bundled
pjproject or add new features that need to be pushed upstream
but...
* The source directory created by extracting the pjproject tarball
is not scanned for code changes so you have to keep forcing
rebuilds.
* The source directory isn't a git repo so you can't easily create
patches, do git bisects, etc.
* Accidentally doing a make distclean will ruin your day by wiping
out the source directory, and your changes.
* etc.
This commit makes that easier.
See third-party/pjproject/README-hacking.md for the details.
ASTERISK-29824
Change-Id: Idb1251040affdab31d27cd272dda68676da9b268
