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Re: handle isl and cloog in contrib/download_prerequisites

From: Diego Novillo <dnovillo at google dot com>
To: Manuel López-Ibáñez <lopezibanez at gmail dot com>
Cc: Gcc Patch List <gcc-patches at gcc dot gnu dot org>, Jonathan Wakely <jwakely dot gcc at gmail dot com>, Ian Lance Taylor <ian at airs dot com>, Laurent GUERBY <laurent at guerby dot net>
Date: Sat, 06 Oct 2012 15:35:38 -0400
Subject: Re: handle isl and cloog in contrib/download_prerequisites
References: <CAESRpQAa=WUn=uX2k7-o_6N3hxY+Nituq_eSwcD_fxH-zphU0Q@mail.gmail.com>

On 2012-10-06 13:30 , Manuel López-Ibáñez wrote:

+download_prerequisite() {
+    WHAT=$1
+    VERSION=$2
+    PACK=$3
+    case $PACK in
+        tar.bz2) TARX="j";;
+        tar.gz)  TARX="z";;
+    esac

GNU tar has not needed 'j' or 'z' for a while. Not sure whether other tars have the same feature, though.

The patch is OK with a minor change:

+    wget ftp://gcc.gnu.org/pub/gcc/infrastructure/$WHAT-${VERSION}.${PACK} || exit 1
+    tar x${TARX}f $WHAT-${VERSION}.${PACK} || exit 1
+    ln -sf $WHAT-${VERSION} $WHAT || exit 1
+    rm $WHAT-${VERSION}.${PACK} || exit 1
+}
+
+if [ ! -e ./contrib/download_prerequisites ]; then

Better use -x here.

Diego.

References:
- handle isl and cloog in contrib/download_prerequisites
  - From: Manuel López-Ibáñez

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