commit 0ed39dfc4609e452bedbf5b79091a96bbe84c914
author Ilya Smirnov <ismirno@us.ibm.com> Mon Jan 11 13:29:34 2021 -0600
committer GitHub Enterprise <noreply@github.ibm.com> Mon Jan 11 13:29:34 2021 -0600
tree f44b79f4dfc14ba7333b3f1328cc4ce1e629354e
parent 0b62a56e481a8f46aa164e3634672cf7167fdac9
parent d77bd86f404b61a75359de9d474561c917bb519e

Merge pull request #673 from zach/master-p10

Support incremental builds in Hostboot

openpower/package/hostboot-p10/hostboot-p10.mk

diff --git a/openpower/package/hostboot-p10/hostboot-p10.mk b/openpower/package/hostboot-p10/hostboot-p10.mk
index 9a766a2..f5c1d31 100644
--- a/openpower/package/hostboot-p10/hostboot-p10.mk
+++ b/openpower/package/hostboot-p10/hostboot-p10.mk
@@ -29,7 +29,11 @@
 # to be created for src/include/usr/tracinterface.H; so delete it and rebuild it
 # manually
 define HOSTBOOT_P10_BUILD_CMDS
-        $(HOSTBOOT_P10_ENV_VARS) bash -c 'cd $(@D) && rm -f src/include/usr/tracinterface.H && cp src/include/usr/trace/interface.H src/include/usr/tracinterface.H && source ./env.bash && $(MAKE)'
+        $(HOSTBOOT_P10_ENV_VARS) bash -c 'cd $(@D) \
+                                          && if ! cmp --quiet src/include/usr/trace/interface.H src/include/usr/tracinterface.H ; then \
+                                                 rm -f src/include/usr/tracinterface.H && cp src/include/usr/trace/interface.H src/include/usr/tracinterface.H ; \
+                                             fi \
+                                          && source ./env.bash && $(MAKE)'
 endef
 
 define HOSTBOOT_P10_INSTALL_IMAGES_CMDS