From e2cf1f143cf1798c55d4845afa3ed45bb81fe639 Mon Sep 17 00:00:00 2001
From: wosch <wosch@FreeBSD.org>
Date: Tue, 12 Mar 2019 07:40:38 +0000
Subject: [PATCH] `make buildworld' should display the build time in seconds

PR:		224433
Reviewed by:	emaste, @bdrewery
Approved by:	cem
Differential Revision: https://reviews.freebsd.org/D13911
---
 Makefile.inc1 | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Makefile.inc1 b/Makefile.inc1
index e5a062acb64..511f63c6307 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -1143,6 +1143,12 @@ WMAKE_TGTS+=	everything
 WMAKE_TGTS+=	build${libcompat}
 .endif
 
+# record buildworld time in seconds
+.if make(buildworld)
+_BUILDWORLD_START!= date '+%s'
+.export _BUILDWORLD_START
+.endif
+
 buildworld: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue .PHONY
 .ORDER: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue
 
@@ -1155,6 +1161,9 @@ buildworld_epilogue: .PHONY
 	@echo
 	@echo "--------------------------------------------------------------"
 	@echo ">>> World build completed on `LC_ALL=C date`"
+	@seconds=$$(($$(date '+%s') - ${_BUILDWORLD_START})); \
+	  echo -n ">>> World build in $$seconds seconds, "; \
+	  echo "ncpu: $$(sysctl -n hw.ncpu)${.MAKE.JOBS:S/^/, make -j/}"
 	@echo "--------------------------------------------------------------"
 
 #
-- 
2.45.0