Makefile: be silent when only GIT_USER_AGENT changes

To avoid noise during builds, unlike the GIT-CFLAGS rule which prints
"* new build flags or prefix" so the operator knows why all files are
being rebuilt when it changes, GIT-USER-AGENT generation is silent.

If this code breaks and a target depending on GIT-USER-AGENT ends up
being rebuilt when it shouldn't be, the full dependency chain can be
retrieved with "make --debug=b".

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Makefile b/Makefile
index 2037caa61ce572e289a01cf81d5143f671645fa5..aa0e4bbb030a23dd833aec3b87edf67146ff23cc 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1924,7 +1924,6 @@ GIT_USER_AGENT_CQ = "$(subst ",\",$(subst \,\\,$(GIT_USER_AGENT)))"
 GIT_USER_AGENT_CQ_SQ = $(subst ','\'',$(GIT_USER_AGENT_CQ))
 GIT-USER-AGENT: FORCE
        @if test x'$(GIT_USER_AGENT_SQ)' != x"`cat GIT-USER-AGENT 2>/dev/null`"; then \
-               echo >&2 "    * new user-agent flag"; \
                echo '$(GIT_USER_AGENT_SQ)' >GIT-USER-AGENT; \
        fi