SL-15742: Convert build scripts to Python 3

This changeset makes it possible to build the Second Life viewer using
Python 3. It is designed to be used with an equivalent Autobuild branch
so that a developer can compile without needing Python 2 on their
machine.

Breaking change: Python 2 support ending

Rather than supporting two versions of Python, including one that was
discontinued at the beginning of the year, this branch focuses on
pouring future effort into Python 3 only. As a result, scripts do not
need to be backwards compatible. This means that build environments,
be they on personal computers and on build agents, need to have a
compatible interpreter.

Notes

- SLVersionChecker will still use Python 2 on macOS
- Fixed the message template url used by template_verifier.py

1 files changed, 1 insertions, 1 deletions

diff --git a/indra/llcommon/llleap.cpp b/indra/llcommon/llleap.cpp
index e8ea0ab398..2704f8b6de 100644
--- a/indra/llcommon/llleap.cpp
+++ b/indra/llcommon/llleap.cpp
@@ -86,7 +86,7 @@ public:
             // notice Python specially: we provide Python LLSD serialization
             // support, so there's a pretty good reason to implement plugins
             // in that language.
-            if (cparams.args.size() && (desclower == "python" || desclower == "python.exe"))
+            if (cparams.args.size() && (desclower == "python" || desclower == "python3" || desclower == "python.exe"))
             {
                 mDesc = LLProcess::basename(cparams.args()[0]);
             }