Don't delete non-autogenerated source files when cleaning up.

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 056b57803ab9045cde3c25ec921d7bf89c1caf25..c0bb1a18637c1174f049fb3923cfdc26b5ebce13 100644 (file)
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -974,8 +974,8 @@ clean:
        find . -name '*.o' -exec rm -f {} ';'
        find . -name '*.s[ol]' -exec rm -f {} ';'
        find $(srcdir) -name '*.py[co]' -exec rm -f {} ';'
-       find $(srcdir) -name 'fficonfig.h' -exec rm -f {} ';'
-       find $(srcdir) -name 'fficonfig.py' -exec rm -f {} ';'
+       find $(srcdir)/build -name 'fficonfig.h' -exec rm -f {} ';' || true
+       find $(srcdir)/build -name 'fficonfig.py' -exec rm -f {} ';' || true
 
 clobber: clean
        -rm -f $(BUILDPYTHON) $(PGEN) $(LIBRARY) $(LDLIBRARY) $(DLLLIBRARY) \