Author: arichardson
Date: Mon Aug 24 09:20:38 2020
New Revision: 364650
URL: https://svnweb.freebsd.org/changeset/base/364650

Log:
  Also print number of available CPUs on Linux
  
  Without this change the buildworld/buildkernel epilogue looks like this:
  >>> World built in 249 seconds, sysctl: cannot stat /proc/sys/hw/ncpu: No 
such file or directory
  ncpu: , make -j72.
  
  Reviewed By:  emaste, bdrewery
  Differential Revision: https://reviews.freebsd.org/D26056

Modified:
  head/Makefile.inc1

Modified: head/Makefile.inc1
==============================================================================
--- head/Makefile.inc1  Mon Aug 24 09:20:33 2020        (r364649)
+++ head/Makefile.inc1  Mon Aug 24 09:20:38 2020        (r364650)
@@ -1136,6 +1136,8 @@ _BUILDWORLD_START!= date '+%s'
 buildworld: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue .PHONY
 .ORDER: buildworld_prologue ${WMAKE_TGTS} buildworld_epilogue
 
+_ncpu_cmd=sysctl -n hw.ncpu 2>/dev/null || nproc 2>/dev/null || echo unknown
+
 buildworld_prologue: .PHONY
        @echo "--------------------------------------------------------------"
        @echo ">>> World build started on `LC_ALL=C date`"
@@ -1147,7 +1149,7 @@ buildworld_epilogue: .PHONY
        @echo ">>> World build completed on `LC_ALL=C date`"
        @seconds=$$(($$(date '+%s') - ${_BUILDWORLD_START})); \
          echo -n ">>> World built in $$seconds seconds, "; \
-         echo "ncpu: $$(sysctl -n hw.ncpu)${.MAKE.JOBS:S/^/, make -j/}"
+         echo "ncpu: $$(${_ncpu_cmd})${.MAKE.JOBS:S/^/, make -j/}"
        @echo "--------------------------------------------------------------"
 
 #
@@ -1656,7 +1658,7 @@ buildkernel: .MAKE .PHONY
 .endfor
        @seconds=$$(($$(date '+%s') - ${_BUILDKERNEL_START})); \
          echo -n ">>> Kernel(s) ${BUILDKERNELS} built in $$seconds seconds, "; 
\
-         echo "ncpu: $$(sysctl -n hw.ncpu)${.MAKE.JOBS:S/^/, make -j/}"
+         echo "ncpu: $$(${_ncpu_cmd})${.MAKE.JOBS:S/^/, make -j/}"
        @echo "--------------------------------------------------------------"
 
 NO_INSTALLEXTRAKERNELS?=       yes
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