[rtems-source-builder commit] sb: Change default prefix

[Sebastian Huber]

Module:    rtems-source-builder
Branch:    4.10
Commit:    ad29cd659d886c448e0b8ed240f833f4cf437478
Changeset: http://git.rtems.org/rtems-source-builder/commit/?id=ad29cd659d886c448e0b8ed240f833f4cf437478

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Thu Jan 17 11:32:45 2019 +0100

sb: Change default prefix

Use OS prefix + "rtems" + $rtems_version as the default prefix to
automatically separate different RTEMS versions.

Close #3680.

---

 source-builder/sb/options.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/source-builder/sb/options.py b/source-builder/sb/options.py
index 4800005..7d1856b 100644
--- a/source-builder/sb/options.py
+++ b/source-builder/sb/options.py
@@ -299,6 +299,12 @@ class command_line:
         # Must have a host
         if self.defaults['_build'] == self.defaults['nil']:
             raise error.general('--build not set')
+        # Default prefix
+        prefix = self.parse_args('--prefix')
+        if prefix is None:
+            value = path.join(self.defaults['_prefix'], 'rtems', str(version.version()))
+            self.opts['prefix'] = value
+            self.defaults['_prefix'] = value
         # Manage the regression option
         if self.opts['regression'] != '0':
             self.opts['no-install'] = '1'