Jan Lindemann
2b04e387df
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If $(CACHE_PROJECT_MK) AKA .cache-project.mk already exists but needs to be remade because of dependencies, it is included, its content read, then the content cached again to the same file. That way stale variables can leak into the refreshed cache. This commit fixes the situation by removing it, then invoking make again to remake it, thereby clearing the variable database and forcing make to fill the variables afresh. Signed-off-by: Jan Lindemann <jan@janware.com>
49 lines
1.4 KiB
Makefile
49 lines
1.4 KiB
Makefile
# ----- define these variables
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# CACHED_FILES = $(TOPDIR)/VERSION
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# CACHED_VARS = VERSION
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.PHONY: cache clean.cache
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CACHED_FILES ?= $(VERSION_FILE) $(wildcard $(TOPDIR)/make/project.conf)
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CACHED_VARS ?= PROJECT PREREQ_BUILD PREREQ_RUN PREREQ VERSION HEX_VERSION \
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FULL_NAME WHICH PYTHON ECHO TEST BROWSER SED RM PWD ID CUT TR \
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AWK GETENT XARGS FIND PRINTF PLATFORM_INFO OS_NAME_VERSION \
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CAT BIN_INSTALL SUDO \
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JW_PKG_LD_LIBRARY_PATH JW_PKG_EXE_PATH JW_PKG_PYTHON_PATH
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CACHED_VARS_ONLY_PROJECT ?= \
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PROJECT \
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PREREQ_BUILD \
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PREREQ_RUN \
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PREREQ \
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VERSION \
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HEX_VERSION \
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FULL_NAME \
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JW_PKG_LD_LIBRARY_PATH \
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JW_PKG_EXE_PATH \
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JW_PKG_PYTHON_PATH
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# We need this to cache JW_PKG_PYTHON_PATH
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include $(JWBDIR)/make/py-path.mk
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all: cache
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clean: clean.cache
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clean.cache:
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rm -f $(CACHE_PROJECT_MK)
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cache: $(CACHE_PROJECT_MK)
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$(CACHE_PROJECT_MK): $(CACHED_FILES) $(JWBDIR)/make/cache.mk
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ifneq ($(wildcard $(CACHE_PROJECT_MK)),)
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rm -f $@
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make $@
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else
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@echo 'ifneq ($$(JW_PKG_NO_CACHE),true)' | tee $@.tmp
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@echo $(foreach v,$(CACHED_VARS),$v = $(value $(v)) EOL) | \
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$(SED) 's/\s\+EOL/\n/g;' | \
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$(SED) 's/\s*\(\S\+\)\s*=\s*\(.*\)\s*/ifndef \1\n \1 = \2\nendif\n/g;' | \
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$(SED) 's|$(realpath $(TOPDIR))|$$(TOPDIR)|g' | \
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$(SED) 's|$(realpath $(PROJECTS_DIR))|$$(PROJECTS_DIR)|g' | \
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$(GREP) . | \
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tee -a $@.tmp
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@echo 'endif # ifneq ($$(JW_PKG_NO_CACHE),true)' | tee -a $@.tmp
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mv $@.tmp $@
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endif
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