From 340b524348eabc0fa750232305000586e5b8646f Mon Sep 17 00:00:00 2001
From: lethosor <lethosor@gmail.com>
Date: Mon, 15 Aug 2022 17:49:44 -0400
Subject: [PATCH] Invoke build.py with cmake-found python

In the Buildmaster GCC 4.8 image, `/usr/bin/env python3` appears to find the
system Python (3.4) as opposed to the newer Python (3.6) we install separately.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c278c4542..60bffa758 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -493,7 +493,7 @@ if(BUILD_DOCS)
         "${CMAKE_BINARY_DIR}/docs/text"
     )
     add_custom_command(OUTPUT ${SPHINX_OUTPUT}
-        COMMAND "${CMAKE_CURRENT_SOURCE_DIR}/docs/build.py"
+        COMMAND "${Python3_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/docs/build.py"
             html text --sphinx="${SPHINX_EXECUTABLE}" -- -q
         DEPENDS ${SPHINX_DEPS}
         COMMENT "Building documentation with Sphinx"