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-rw-r--r--Makefile.rules3
1 files changed, 2 insertions, 1 deletions
diff --git a/Makefile.rules b/Makefile.rules
index 29a1a27b85..cf7abab0c4 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -84,7 +84,8 @@ cmd_c_to_host = $(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) -MMD -MF $@.d -o $@ \
cmd_cxx_to_host = $(HOSTCXX) -std=c++0x $(COMMON_WARN) $(HOST_CXXFLAGS)\
-I ./$($(notdir $@)_ROOT) -o $@ $(filter %.cc,$^) $($(notdir $@)_LIBS)
cmd_host_test = ./util/run_host_test $* $(silent)
-cmd_version = ./util/getversion.sh > $@
+# generate new version.h, compare if it changed and replace if so
+cmd_version = ./util/getversion.sh > $@.tmp && cmp $@.tmp $@ >/dev/null || mv $@.tmp $@; rm -f $@.tmp
cmd_vif = $(out)/util/genvif -b $(BOARD) -o $(out)
cmd_mv_from_tmp = mv $(out)/$*.bin.tmp $(out)/$*.bin
cmd_extractrw-y = dd if=$(out)/$(PROJECT).bin.tmp of=$(out)/$(PROJECT).RW.bin \