Change in coreboot[master]: Makefile: Don't run genbuild_h if not doing a build

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/53997 )

Change subject: Makefile: Don't run genbuild_h if not doing a build
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Makefile: Don't run genbuild_h if not doing a build

genbuild_h was being run on every make invocation - clean, distclean,
etc. to get the source date epoch value.  This value isn't used unless
a build is being done, so don't run it on non-compile make invocations.

Signed-off-by: Martin Roth 
Change-Id: I2afc0affc17116e0db849ea968474bc19dbb0ae1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53997
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
Reviewed-by: Patrick Georgi 
---
M Makefile
1 file changed, 2 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Patrick Georgi: Looks good to me, approved
  Angel Pons: Looks good to me, but someone else must approve

diff --git a/Makefile b/Makefile
index 02c6288..e25c081 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,9 @@
 LANG:=C
 LC_ALL:=C
 TZ:=UTC0
+ifneq ($(NOCOMPILE),1)
 SOURCE_DATE_EPOCH := $(shell $(top)/util/genbuild_h/genbuild_h.sh . | sed -n 's/^.define COREBOOT_BUILD_EPOCH>.*"(.*)".*/\1/p')
+endif
 # don't use COREBOOT_EXPORTS to ensure build steps outside the coreboot build system
 # are reproducible
 export LANG LC_ALL TZ SOURCE_DATE_EPOCH