Link rather than copy the normaliz binary.

Also, fix accidental replacement of factory symlink with a directory.

Macaulay2.spec

@@ -35,7 +35,7 @@
 Summary: System for algebraic geometry and commutative algebra
 Name:    Macaulay2
 Version: 1.9.2
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 License: GPLv2 or GPLv3
 URL:     http://macaulay2.com/
@@ -279,8 +279,8 @@ sed -i 's/\(libm[[:alpha:]]*\)\.a/\1.so/' Macaulay2/bin/Makefile.in
 %patch7 -p1 -b .mpir
 %endif
 # factory-gftables symlink
-mkdir -p BUILD/%{_target_platform}/usr-dist/common/share/Macaulay2/Core/factory
-ln -s %{_datadir}/factory/gftables \
+mkdir -p BUILD/%{_target_platform}/usr-dist/common/share/Macaulay2/Core
+ln -s %{_datadir}/factory \
          BUILD/%{_target_platform}/usr-dist/common/share/Macaulay2/Core/factory
 %patch8 -p1 -b .gtest
 %patch9 -p1 -b .givaro
@@ -358,6 +358,11 @@ find BUILD/%{_target_platform}/ -name *.errors -execdir echo {} \; -execdir cat
 %install
 make install -C BUILD/%{_target_platform} DESTDIR=%{buildroot} IgnoreExampleErrors=true
 
+# link, don't copy, the normaliz binary
+normaliz_bin=$(ls -1 %{buildroot}%{_libexecdir}/Macaulay2/*Linux*/normaliz)
+rm -f $normaliz_bin
+ln -s %{_bindir}/normaliz $normaliz_bin
+
 # app img
 install -p -m644 -D %{SOURCE10} \
   %{buildroot}%{_datadir}/icons/hicolor/32x32/apps/Macaulay2.png
@@ -395,6 +400,24 @@ LDFLAGS="$RPM_LD_FLAGS" \
 time make -k check -C BUILD/%{_target_platform} Verbose=true ||:
 
 
+# This script deals with accidental replacement of the factory symlink with
+# a directory.  Once F26 has reached EOL, this can be removed.
+%pretrans -p <lua>
+path = "%{_datadir}/Macaulay2/Core/factory"
+st = posix.stat(path)
+if st and st.type == "directory" then
+  status = os.rename(path, path .. ".rpmmoved")
+  if not status then
+    suffix = 0
+    while not status do
+      suffix = suffix + 1
+      status = os.rename(path .. ".rpmmoved", path .. ".rpmmoved." .. suffix)
+    end
+    os.rename(path, path .. ".rpmmoved")
+  end
+end
+
+
 %post
 touch --no-create %{_datadir}/icons/hicolor ||:
 for info_file in %{INFO_FILES} 
@@ -439,7 +462,11 @@ gtk-update-icon-cache -q %{_datadir}/icons/hicolor > /dev/null 2>&1 ||:
 
 
 %changelog
-* Wed Apr  5 2017 Jerry James <loganjerry@gmail.com> -1.9.2-1
+* Tue Oct 17 2017 Jerry James <loganjerry@gmail.com> - 1.9.2-2
+- Link rather than copy the normaliz binary
+- Fix accidental replacement of factory symlink with a directory
+
+* Wed Apr  5 2017 Jerry James <loganjerry@gmail.com> - 1.9.2-1
 - Macaulay2-1.9.2
 - Drop upstreamed patches: -disable_broken_debug_functions, -gc, -rpath,
   -rh_configure_hack