[4.0] 1f31dc1 Revert part of ac3bbf09. (install / cp)

[Lasse Karstensen]

commit 1f31dc1c1936769ebeeb1fc5352df257cb107c77
Author: Lasse Karstensen <lkarsten at varnish-software.com>
Date:   Tue Jan 27 15:18:27 2015 +0100

    Revert part of ac3bbf09. (install / cp)
    
    The real issue was a missing reference/, which the additional
    requirement should take care of.
    
    Note to future self: install -D is something entirely different
    on BSD systems.

diff --git a/doc/sphinx/Makefile.am b/doc/sphinx/Makefile.am
index dbc9e49..31eed38 100644
--- a/doc/sphinx/Makefile.am
+++ b/doc/sphinx/Makefile.am
@@ -149,11 +149,11 @@ reference:
 BUILT_SOURCES += reference
 
 reference/vmod_std.generated.rst: reference $(top_builddir)/lib/libvmod_std/vmod_std.rst
-	install -D $(top_builddir)/lib/libvmod_std/vmod_std.rst $@
+	cp $(top_builddir)/lib/libvmod_std/vmod_std.rst $@
 BUILT_SOURCES += reference/vmod_std.generated.rst
 
 reference/vmod_directors.generated.rst: reference $(top_builddir)/lib/libvmod_directors/vmod_directors.rst
-	install -D $(top_builddir)/lib/libvmod_directors/vmod_directors.rst $@
+	cp $(top_builddir)/lib/libvmod_directors/vmod_directors.rst $@
 BUILT_SOURCES += reference/vmod_directors.generated.rst
 
 EXTRA_DIST += $(BUILT_SOURCES)