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Fix kati regen due to build_number.txt 

Do NOT touch build_number.txt if BUILD_NUMBER is explicitly set
but not changed from last build.

Bug: 182221512
Test: BUILD_NUMBER=123 m nothing
Change-Id: Ic88f6e0d2b9767d84e1ec5c826018d1ea08c0fc0
This commit is contained in:
Po Hu 2021-03-09 10:48:37 +08:00
parent 2ebf9b6798
commit 6e64c14ce9
1 changed files with 6 additions and 1 deletions
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7
core/main.mk
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@ -41,7 +41,12 @@ include $(BUILD_SYSTEM)/clang/config.mk
# without changing the command line every time. Avoids rebuilds
# when using ninja.
$(shell mkdir -p $(SOONG_OUT_DIR) && \
echo -n $(BUILD_NUMBER) > $(SOONG_OUT_DIR)/build_number.txt)
echo -n $(BUILD_NUMBER) > $(SOONG_OUT_DIR)/build_number.tmp; \
if ! cmp -s $(SOONG_OUT_DIR)/build_number.tmp $(SOONG_OUT_DIR)/build_number.txt; then \
mv $(SOONG_OUT_DIR)/build_number.tmp $(SOONG_OUT_DIR)/build_number.txt; \
else \
rm $(SOONG_OUT_DIR)/build_number.tmp; \
fi)
BUILD_NUMBER_FILE := $(SOONG_OUT_DIR)/build_number.txt
.KATI_READONLY := BUILD_NUMBER_FILE
$(KATI_obsolete_var BUILD_NUMBER,See https://android.googlesource.com/platform/build/+/master/Changes.md#BUILD_NUMBER)