Support in-tree CLooG and ISL libraries for GCC

Update #3577.

source-builder/config/gcc-common-1.cfg

@@ -46,6 +46,16 @@ URL: 	   http://gcc.gnu.org/
  %define rtems_gcc_version %{rtems_version}
 %endif
 
+#
+# Packages GCC requires
+#
+%if %{defined cloog_version}
+%source set cloog https://gcc.gnu.org/pub/gcc/infrastructure/cloog-%{cloog_version}.tar.gz
+%endif
+%if %{defined isl_version}
+%source set isl https://gcc.gnu.org/pub/gcc/infrastructure/isl-%{isl_version}.tar.bz2
+%endif
+
 #
 # Prepare the source code.
 #
@@ -74,6 +84,28 @@ URL: 	   http://gcc.gnu.org/
   %{__rmfile} ${source_dir_gcc}/newlib
   %{__ln_s} $PWD/${source_dir_newlib}/newlib ${source_dir_gcc}/newlib
 
+%if %{defined cloog_version}
+  # CLooG
+  source_dir_cloog="cloog-%{cloog_version}"
+  %source setup cloog -q -D -n cloog-%{cloog_version}
+  %patch setup cloog -p1
+  cd ${build_top}
+  # Build MPFR one-tree style
+  %{__rmfile} ${source_dir_gcc}/cloog
+  %{__ln_s} $PWD/${source_dir_cloog} ${source_dir_gcc}/cloog
+%endif
+
+%if %{defined isl_version}
+  # ISL
+  source_dir_isl="isl-%{isl_version}"
+  %source setup isl -q -D -n isl-%{isl_version}
+  %patch setup isl -p1
+  cd ${build_top}
+  # Build MPFR one-tree style
+  %{__rmfile} ${source_dir_gcc}/isl
+  %{__ln_s} $PWD/${source_dir_isl} ${source_dir_gcc}/isl
+%endif
+
   # MPFR
   source_dir_mpfr="mpfr-%{mpfr_version}"
   %source setup mpfr -q -D -n mpfr-%{mpfr_version}