summaryrefslogtreecommitdiff
path: root/examples
diff options
context:
space:
mode:
Diffstat (limited to 'examples')
-rw-r--r--examples/calc++/Makefile.am7
1 files changed, 5 insertions, 2 deletions
diff --git a/examples/calc++/Makefile.am b/examples/calc++/Makefile.am
index 627b20c9..1456f2e7 100644
--- a/examples/calc++/Makefile.am
+++ b/examples/calc++/Makefile.am
@@ -62,8 +62,11 @@ $(srcdir)/calc++-parser.stamp: $(srcdir)/calc++-parser.yy $(BISON_IN)
@mv -f calc++-parser.tmp $@
$(calc_sources_generated): $(srcdir)/calc++-parser.stamp
- rm -f $(srcdir)/calc++-parser.stamp
- $(MAKE) $(AM_MAKEFLAGS) $(srcdir)/calc++-parser.stamp
+ @if test -f $@; then :; else \
+ rm -f $(srcdir)/calc++-parser.stamp && \
+ $(MAKE) $(AM_MAKEFLAGS) $(srcdir)/calc++-parser.stamp; \
+ fi
+
## --------------------------- ##
## Building & testing calc++. ##