11.3.1-4.1

Work around --with-gxx-include-dir

Resolves: #2149650

gcc.spec

@@ -1501,6 +1501,18 @@ for crossarch in %{cross_targets}; do
   # Temporarily replace DEV-PHASE.
   cp -p ../../gcc/DEV-PHASE{.cross,}
 
+  # --with-gxx-include-dir= doesn't prefix its argument with $(DESTDIR)
+  # and you can't install things into /usr unless you're root.
+  mkdir scratch
+  scratchdir=`pwd`/scratch
+  cd $crossarch/libstdc++-v3
+  for i in `find . -name Makefile`; do
+    cp -a $i $i.save
+    sed -i -e 's?^gxx_include_dir = .*$?gxx_include_dir = '$scratchdir'?' $i
+    touch -r $i.save $i
+  done
+  cd ../..
+
   # Use -j1, because build-many-glibcs says:
   # Parallel "make install" for GCC has race conditions that can
   # cause it to fail; see
@@ -1518,6 +1530,15 @@ for crossarch in %{cross_targets}; do
   # Restore DEV-PHASE.
   cp -p ../../gcc/DEV-PHASE{.native,}
 
+  # Restore Makefiles with the old gxx_include_dir.
+  cd $crossarch/libstdc++-v3
+  for i in `find . -name Makefile`; do
+    mv -f $i.save $i
+  done
+  cd ../..
+  # We're not shipping C++ headers; nuke 'em.
+  rm -rf $scratchdir
+
   # Move libgomp.spec to where it belongs for %files.
   mv $crossarch/libgomp/libgomp.spec $CROSS_LIBPATH