scons: Added 'python3-config' to the config list

Previously scons looked for 'python-config' and 'python2-config'. This
caused an error in Python3-exclusive environments. With only python3
installed, 'python3-config' is now an option. With this setup,
'python2-config' is used by default, unless overridden by the user
via the scons command line.

Change-Id: I11186328b0eb0825cc53c3889b31a5345a7f40d1
Issue-on: https://gem5.atlassian.net/browse/GEM5-275
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/28648
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

diff --git a/SConstruct b/SConstruct
index b7608a8b2a167ee4aaf27af70b3a5983a17fd3d2..0a18c3d0013cfbf9e9161d3c6d1a8e93bbae6fb2 100755 (executable)
--- a/SConstruct
+++ b/SConstruct
@@ -277,7 +277,7 @@ global_vars.AddVariables(
     ('CCFLAGS_EXTRA', 'Extra C and C++ compiler flags', ''),
     ('LDFLAGS_EXTRA', 'Extra linker flags', ''),
     ('PYTHON_CONFIG', 'Python config binary to use',
-     [ 'python2.7-config', 'python-config' ]),
+     [ 'python2.7-config', 'python-config', 'python3-config' ]),
     ('PROTOC', 'protoc tool', environ.get('PROTOC', 'protoc')),
     ('BATCH', 'Use batch pool for build and tests', False),
     ('BATCH_CMD', 'Batch pool submission command name', 'qdo'),