@@ -51,7 +51,7 @@ class PackageBuilder(object):

             if self.sandbox.hasToolchain():

                 tUtils.installExtraToolchainRPMS(self.sandbox, self.package, self.version)

             else:

-                tUtils.installToolchainRPMS(self.sandbox, self.package, self.version)

+                tUtils.installToolchainRPMS(self.sandbox, self.package, self.version, availablePackages=self.doneList)

             listDependentPackages, listTestPackages, listInstalledPackages, listInstalledRPMs = (

                 self._findDependentPackagesAndInstalledRPM(self.sandbox))

@@ -52,10 +52,12 @@ class ToolChainUtils(object):

         try:

             pkgUtils = PackageUtils(self.logName, self.logPath)

             coreToolChainYetToBuild = []

+            doneList = []

             for package in constants.listCoreToolChainPackages:

                 version = SPECS.getData().getHighestVersion(package)

                 rpmPkg = pkgUtils.findRPMFile(package, version)

                 if rpmPkg is not None:

+                    doneList.append(package+'-'+version)

                     continue

                 else:

                     coreToolChainYetToBuild.append(package)

@@ -73,11 +75,12 @@ class ToolChainUtils(object):

                     CommandUtils.runCommandInShell("mkdir -p " + destLogPath)

                 chroot = Chroot(self.logger)

                 chroot.create(package + "-" + version)

-                self.installToolchainRPMS(chroot, package, version)

+                self.installToolchainRPMS(chroot, package, version, availablePackages=doneList)

                 pkgUtils.adjustGCCSpecs(chroot, package, version)

                 pkgUtils.buildRPMSForGivenPackage(chroot, package, version, destLogPath)

                 pkgCount += 1

                 chroot.destroy()

+                doneList.append(package+'-'+version)

             self.logger.debug("Successfully built toolchain")

             self.logger.info("-" * 45 + "\n")

         except Exception as e:

@@ -113,8 +116,13 @@ class ToolChainUtils(object):

             if not version:

                 version = SPECS.getData().getHighestVersion(package)

-            basePkg = SPECS.getData().getSpecName(package)+"-"+version

-            isAvailable = (availablePackages and basePkg in availablePackages)

+            if availablePackages is not None:

+                basePkg = SPECS.getData().getSpecName(package)+"-"+version

+                isAvailable = basePkg in availablePackages

+            else:

+                # if availablePackages is not provided (rear case) it is safe

+                # to use findRPMFile()

+                isAvailable = True

             if constants.rpmCheck:

                 rpmFile = pkgUtils.findRPMFile(package, version)

@@ -130,7 +138,7 @@ class ToolChainUtils(object):

                     constants.listToolChainRPMsToInstall.index(packageName) <

                         constants.listToolChainRPMsToInstall.index(package)):

                     isAvailable = False

-                else:

+                if isAvailable:

                     rpmFile = pkgUtils.findRPMFile(package, version)

             if rpmFile is None: