BUILD: makefile: fix build options when building tools first

Due to the test on the target introduced by commit 9577a152b ("BUILD:
makefile: do not erase build options for some build options"), if a
tool (e.g. halog) is build first before haproxy after a clean or a
fresh source extraction, the .build_opts file does not exist and
"make" complains since there's no such target. Make sure to define
the empty target for all "else" blocks there. No backport is needed.

diff --git a/Makefile b/Makefile
index fad48cca67d357ecb7276b44b41425161ca19f97..c66fb45981d7787d8ce1c6149725c556d8e0e8b3 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -984,6 +984,8 @@ build_opts = $(shell rm -f .build_opts.new; echo \'$(TARGET) $(BUILD_OPTIONS) $(
 else
 .build_opts:
 endif # ignore_opts
+else
+.build_opts:
 endif # non-empty target
 
 haproxy: $(OPTIONS_OBJS) $(OBJS)