Introduce a variable TARGETS that can be set on the make command line

and that controls which platforms are being built as part of a "make
universe". By default TARGETS is set to the 8 platforms currently
being built. This variable is useful for running or re-running a
"make universe" with only a selected set of platforms. This makes the
universe target slightly more useful in cases the universe is limited
to a developer's scope or objectives. For example, when a universe
failed for a particular platform and fixes need to be tested for that
particular platform then a developer can restart the universe for
only that platform, even if the initial universe is still building
other platforms.

1 files changed, 3 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index da25222c45c6..8a1ecab0c306 100644
--- a/Makefile
+++ b/Makefile
@@ -261,12 +261,14 @@ make: .PHONY
 # existing system is.
 #
 .if make(universe)
+TARGETS?=amd64 arm i386 ia64 pc98 powerpc sparc64 sun4v
+
 universe: universe_prologue
 universe_prologue:
 	@echo "--------------------------------------------------------------"
 	@echo ">>> make universe started on ${STARTTIME}"
 	@echo "--------------------------------------------------------------"
-.for target in amd64 arm i386 ia64 pc98 powerpc sparc64 sun4v
+.for target in ${TARGETS}
 KERNCONFS!=	cd ${.CURDIR}/sys/${target}/conf && \
 		find [A-Z]*[A-Z] -type f -maxdepth 0 \
 		! -name DEFAULTS ! -name LINT