Auto-configure build parallelism

diff --git a/build_system.py b/build_system.py
index 634f73d671bd5751b678a62a1d9f2ce7655f7e37..9dceb7df7e689e7782a69ef3fa9462f2ff5e953e 100644 (file)
--- a/build_system.py
+++ b/build_system.py
@@ -15,7 +15,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-import os, shutil, subprocess
+import os, shutil, subprocess, multiprocessing
 
 '''A build system must have a "build" method with parameters "reconfigure" and "waitAfterConfig".'''
 
@@ -69,10 +69,10 @@ class CMake:
                if waitAfterConfig:
                        input('Configuration done. Hit "Enter" to build the project. ')
                # run compilation
-               jobs = int(self.config['jobs'])
+               jobs = multiprocessing.cpu_count()+1
                subprocess.check_call(self.config.get('buildCmdPrefix', []) + ['make', '-j'+str(jobs)])
                # run installation
-               subprocess.check_call(self.config.get('installCmdPrefix', []) + ['make', 'install', '-j'+str((jobs+1)/2)]) # jobs/2, rounded up
+               subprocess.check_call(self.config.get('installCmdPrefix', []) + ['make', 'install', '-j'+str((jobs+1)//2)]) # jobs/2, rounded up
 
 # if auto-debuild is available, provide a wrapper for it
 try:
@@ -98,7 +98,6 @@ try:
                                'buildDir': self.buildFolder,
                                'name': self.config['debName'],
                                'email': self.config['debEMail'],
-                               'parallelJobs': self.config['jobs'],
                                'version': versionName + self.config.get('versionSuffix', ''),
                                'waitAfterConfig': waitAfterConfig,
                        }