Added sit class file for gcc-6-20160403.

packages/compiler/gcc/gcc-6-20160403

@@ -0,0 +1,45 @@
+#!/bin/sh
+# sit class file
+#
+# Christoph Niethammer <niethammer@hlrs.de> (C) 2015
+#
+# sit command:
+
+
+CATEGORY="compiler"
+PACKAGE="gnu"
+VERSION="6-20160403"
+URL="http://gcc.gnu.org"
+INSTALLER="Tünde Erdei <erdei@hlrs.de>"
+
+# Archive A and package name P
+A=gcc-${VERSION}.tar.bz2
+P=gcc-${VERSION}
+
+src_unpack() {
+	# extract gcc source package
+	unpack
+	if [ $PLATFORM = "laki" ] ; then 
+		# Currently, older versions of GMP, MPFR and MPC are installed to avoid problems
+		# http://gcc.gnu.org/install/prerequisites.html
+		# unpack required GMP, MPFR and MPC sources into subdirectories
+		tar xjf ${SRC_POOL}/gmp-4.3.2.tar.bz2  -C $SRCDIR 
+		tar xjf ${SRC_POOL}/mpfr-2.4.2.tar.bz2 -C $SRCDIR 
+		tar xzf ${SRC_POOL}/mpc-0.8.1.tar.gz   -C $SRCDIR 
+                tar xjf ${SRC_POOL}/isl-0.15.tar.bz2 -C $SRCDIR
+		# rename subdirectories as required by gcc's configure
+		mv $SRCDIR/gmp-*  $SRCDIR/gmp
+		mv $SRCDIR/mpfr-* $SRCDIR/mpfr
+		mv $SRCDIR/mpc-*  $SRCDIR/mpc
+		mv $SRCDIR/isl-*  $SRCDIR/isl
+	fi
+} 
+
+src_pretest() {
+    make check
+}
+
+# Other interesting configure options:
+CONFIGURE_OPTS=" \
+        --enable-languages=c,c++,fortran \
+        "