Fix: preserve example files' timestamps when copying

This fixes an issue where examples were always being rebuilt
when performing an out of tree build since the examples were
being copied to the build directory with a timestamp more
recent than the already-built example objects.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/doc/examples/Makefile.am b/doc/examples/Makefile.am
index fbabb8ec9df2d403dc37264cd1d466deea59ed8f..6f0a31aa37d777498aa516d17ba836d35b4950b6 100644 (file)
--- a/doc/examples/Makefile.am
+++ b/doc/examples/Makefile.am
@@ -57,7 +57,7 @@ endif
 all-local:
        @if [ x"$(srcdir)" != x"$(builddir)" ]; then \
                for subdir in $(SUBDIRS_PROXY) $(SUBDIRS_JUL); do \
-                       cp -fR $(srcdir)/$$subdir $(builddir); \
+                       cp -pfR $(srcdir)/$$subdir $(builddir); \
                done; \
        fi; \
        if [ x"$(shell echo "$(top_srcdir)" | grep "^/" | wc -l)" = x"1" ]; then \