diff --git a/bin/BuildSystem/BoostBuildSystem.py b/bin/BuildSystem/BoostBuildSystem.py
index ce7cc67e6..fd47af0ba 100644
--- a/bin/BuildSystem/BoostBuildSystem.py
+++ b/bin/BuildSystem/BoostBuildSystem.py
@@ -1,120 +1,114 @@
 # -*- coding: utf-8 -*-
 # this package contains functions to check the current compiler
 # copyright:
 # Hannah von Reth <vonreth@kde.org>
 
 """@package provides boost build system"""
 from Blueprints.CraftVersion import CraftVersion
 from BuildSystem.BuildSystemBase import *
 from CraftOS.osutils import OsUtils
 from CraftStandardDirs import CraftStandardDirs
 
 
 class BoostBuildSystem(BuildSystemBase):
     """ cmake build support """
 
     def __init__(self):
         """constructor. configureOptions are added to the configure command line and makeOptions are added to the make command line"""
         BuildSystemBase.__init__(self, "boost")
         self.subinfo.options.package.packSources = False
         self.subinfo.options.needsShortPath = True
 
     def configureOptions(self, defines=""):
         """returns default configure options"""
         options = BuildSystemBase.configureOptions(self)
 
-        if OsUtils.isWin():
-            options += " -j" + os.getenv("NUMBER_OF_PROCESSORS")
-            options += " --build-dir=" + self.buildDir()
-        else:
-            # TODO: real value
-            options += " install --prefix=%s" % self.buildDir()
-            options += " -j10"
-
+        options += f" -j{multiprocessing.cpu_count()}"
+        options += " --build-dir=" + self.buildDir()
         options += (" --build-type=minimal"
                     #                " --debug-configuration"
                     " threading=multi"
                     )
 
         if not self.subinfo.options.buildStatic:
             options += (" link=shared"
                         " runtime-link=shared")
         else:
             options += (" link=static"
                         " runtime-link=shared")
         if CraftCore.compiler.isX64():
             options += " address-model=64 architecture=x86"
         else:
             options += " address-model=32 architecture=x86"
 
         if self.buildType() == "Debug":
             options += " variant=debug"
         else:
             options += " variant=release"
 
         options += " toolset="
         if CraftCore.compiler.isClang():
             options += "clang"
             if CraftCore.compiler.isGCC():
                 options += " threadapi=pthread"
         elif CraftCore.compiler.isGCC():
             options += "gcc"
         elif CraftCore.compiler.isMSVC():
             platform = str(CraftCore.compiler.getMsvcPlatformToolset())
             if CraftVersion(self.buildTarget) < CraftVersion("1_65_1") and CraftCore.compiler.isMSVC2017():
                 options += f"msvc-{platform[:2]}.0"
             else:
                 options += f"msvc-{platform[:2]}.{platform[2:]}"
         elif CraftCore.compiler.isIntel():
             options += "intel"
             options += " -sINTEL_PATH=\"%s\"" % os.path.join(os.getenv("INTELDIR"), "bin", os.getenv("TARGET_ARCH"))
             options += " -sINTEL_BASE_MSVC_TOOLSET=vc-%s" % (
             {"vs2008": "9_0", "vs2010": "10_0", "vs2012": "11_0"}[os.getenv("INTEL_VSSHELL")])
             options += " -sINTEL_VERSION=%s" % os.getenv("PRODUCT_NAME")[-2:]
         craftUserConfig = os.path.join(CraftStandardDirs.craftRoot(), "etc", "craft-boost-config.jam")
         if os.path.exists(craftUserConfig):
             options += " --user-config=" + os.path.join(craftUserConfig)
         return options
 
     def configure(self, defines=""):
         return True
 
     def make(self):
         """implements the make step for cmake projects"""
         self.boost = CraftPackageObject.get('libs/boost/boost-headers').instance
         self.subinfo.targetInstSrc[self.subinfo.buildTarget] = os.path.join(self.boost.sourceDir(), "libs",
                                                                             self.subinfo.targetInstSrc[
                                                                                 self.subinfo.buildTarget], "build")
 
         self.enterSourceDir()
         cmd = "bjam"
         cmd += self.configureOptions(self.subinfo.options.configure.args)
         return utils.system(cmd)
 
 
     def install(self):
         """install the target"""
         if not BuildSystemBase.install(self):
             return False
 
         reLib = re.compile("(^.*\.lib$|^.*\.a$|^.*\.so.*$)")
 
         for root, dirs, files in os.walk(self.buildDir()):
             for f in files:
                 if f.endswith(".dll"):
                     utils.copyFile(os.path.join(root, f), os.path.join(self.imageDir(), "lib", f))
                     utils.copyFile(os.path.join(root, f), os.path.join(self.imageDir(), "bin", f))
                 elif reLib.search(f):
                     utils.copyFile(os.path.join(root, f), os.path.join(self.imageDir(), "lib", f))
                     if CraftCore.compiler.isUnix and not f.endswith(".a"):
                       name, ext = os.path.splitext(f)
                       while not ext == ".so":
                         utils.createSymlink(os.path.join(root, f), os.path.join(self.imageDir(), "lib", name))
                         name, ext = os.path.splitext(name)
 
         return True
 
 
 
     def unittest(self):
         return True