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Make's file function is only available from 4.2 onwards #2386

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Merged
merged 1 commit into from
Jun 21, 2018
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Make's file function is only available from 4.2 onwards #2386

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6 changes: 0 additions & 6 deletions src/common
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Original file line number Diff line number Diff line change
Expand Up @@ -239,13 +239,7 @@ else
$(CBMC_VERSION_FILES): CP_CXXFLAGS += -DCBMC_VERSION="\"$(CBMC_VERSION) ($(GIT_INFO))\""
endif

# Use make >= 4.0's `file` function, if available - it should be faster than
# `shell cat`
ifeq ($(firstword $(subst ., , $(MAKE_VERSION))), 3)
KNOWN_RELEASE_INFO = $(shell cat $(GIT_INFO_FILE) 2>/dev/null)
else
KNOWN_RELEASE_INFO = $(file < $(GIT_INFO_FILE))
endif
ifneq ($(GIT_INFO), $(KNOWN_RELEASE_INFO))
$(CBMC_VERSION_FILES): $(GIT_INFO_FILE)

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