[Patch] Extend script ./contrib/download_prerequisites usage for isl and cloog

[Chung-Ju Wu]

Hi all,

Using current trunk repository, it is now able to build
compiler with in-tree isl and cloog.

This patch is to extend ./contrib/download_prerequisites
usage to download isl and cloog conditionally in case
people would like to build gcc with graphite loop optimizations.

OK for the trunk?


contrib/ChangeLog

2013-05-18  Chung-Ju Wu  <jasonwucj@gmail.com>

        * download_prerequisites: Download isl and cloog conditionally.



Index: contrib/download_prerequisites
===================================================================
--- contrib/download_prerequisites      (revision 199006)
+++ contrib/download_prerequisites      (working copy)
@@ -19,6 +19,12 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see http://www.gnu.org/licenses/.

+# If you want to build GCC with the Graphite loop optimizations,
+# set GRAPHITE_LOOP_OPT=yes to download optional prerequisties
+# ISL Library and CLooG.
+GRAPHITE_LOOP_OPT=no
+
+# Necessary to build GCC.
 MPFR=mpfr-2.4.2
 GMP=gmp-4.3.2
 MPC=mpc-0.8.1
@@ -36,3 +42,19 @@
 ln -sf $MPC mpc || exit 1

 rm $MPFR.tar.bz2 $GMP.tar.bz2 $MPC.tar.gz || exit 1
+
+# Necessary to build GCC with the Graphite loop optimizations.
+if [ "$GRAPHITE_LOOP_OPT" == "yes" ] ; then
+  ISL=isl-0.11.1
+  CLOOG=cloog-0.18.0
+
+  wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$ISL.tar.bz2 || exit 1
+  tar xjf $ISL.tar.bz2  || exit 1
+  ln -sf $ISL isl || exit 1
+
+  wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$CLOOG.tar.gz || exit 1
+  tar xzf $CLOOG.tar.gz || exit 1
+  ln -sf $CLOOG cloog || exit 1
+
+  rm $ISL.tar.bz2 $CLOOG.tar.gz || exit 1
+fi


Best regards,
jasonwucj