LLVM_VERSION="$LLVM_SUBMIT_VERSION-$LLVM_SUBMIT_SUBVERSION"
fi
-# Note: Don't pass -jN here. Building universal already has parallelism and we
-# don't want to make the builders hit swap by firing off too many gcc's at the
-# same time.
-make $OPTIMIZE_OPTS UNIVERSAL=1 UNIVERSAL_ARCH="$TARGETS" \
+GCC_VER=`cc --version 2>/dev/null | sed 1q`
+
+if echo "$GCC_VER" | grep GCC > /dev/null; then
+ GCC_VER=`echo $GCC_VER | sed -e 's/.*(GCC) \([0-9.][0-9.]*\).*/\1/'`
+ MAJ_VER=`echo $GCC_VER | sed 's/\..*//'`
+ MIN_VER=`echo $GCC_VER | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
+fi
+
+JOBS_FLAG=""
+
+# Note: If compiling with GCC 4.0, don't pass the -jN flag. Building universal
+# already has parallelism and we don't want to make the builders hit swap by
+# firing off too many gccs at the same time.
+if [ "x$MAJ_VER" != "x4" -o "x$MIN_VER" != "x0" ]; then
+ # Figure out how many make processes to run.
+ SYSCTL=`sysctl -n hw.activecpu`
+
+ # hw.activecpu only available in 10.2.6 and later
+ if [ -z "$SYSCTL" ]; then
+ SYSCTL=`sysctl -n hw.ncpu`
+ fi
+
+ # sysctl -n hw.* does not work when invoked via B&I chroot /BuildRoot.
+ # Builders can default to 2, since even if they are single processor,
+ # nothing else is running on the machine.
+ if [ -z "$SYSCTL" ]; then
+ SYSCTL=2
+ fi
+
+ JOBS_FLAG="-j $SYSCTL"
+fi
+
+make $JOBS_FLAG $OPTIMIZE_OPTS UNIVERSAL=1 UNIVERSAL_ARCH="$TARGETS" \
LLVM_SUBMIT_VERSION=$LLVM_SUBMIT_VERSION \
LLVM_SUBMIT_SUBVERSION=$LLVM_SUBMIT_SUBVERSION \
CXXFLAGS="-DLLVM_VERSION_INFO='\" Apple Build #$LLVM_VERSION\"'"