From 3170bc3a8e62fe5be8af840454031b39487b31d5 Mon Sep 17 00:00:00 2001 From: Martin Lucina Date: Fri, 18 Dec 2020 14:11:04 +0000 Subject: Makefile: Add a DISABLE_CLOCK_GETTIME option Allows to force-disable the use of clock_gettime() at build time, falling back to busy-looping for udelay. This is useful when building for systems which are known to lie about the resolution of clock_gettime(), such as Linux guests running under the Muen Separation Kernel. Change-Id: I645a5d3f29ffdbd24a58127ab73d7d8755304f45 Signed-off-by: Martin Lucina Reviewed-on: https://review.coreboot.org/c/flashrom/+/48796 Reviewed-by: Angel Pons Tested-by: build bot (Jenkins) --- Makefile | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Makefile b/Makefile index 1f7ea467..09b21541 100644 --- a/Makefile +++ b/Makefile @@ -1663,12 +1663,17 @@ endif ( echo "found."; echo "UTSNAME := yes" >> .features.tmp ) || \ ( echo "not found."; echo "UTSNAME := no" >> .features.tmp ) } 2>>$(BUILD_DETAILS_FILE) | tee -a $(BUILD_DETAILS_FILE) @printf "Checking for clock_gettime support... " | tee -a $(BUILD_DETAILS_FILE) +ifeq ($(DISABLE_CLOCK_GETTIME), yes) + @ { ( echo "disabled."; echo "CLOCK_GETTIME := no" >>.features.tmp ) } \ + 2>>$(BUILD_DETAILS_FILE) | tee -a $(BUILD_DETAILS_FILE) +else @echo "$$CLOCK_GETTIME_TEST" >.featuretest.c @printf "\nexec: %s\n" "$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -lrt .featuretest.c -o .featuretest$(EXEC_SUFFIX)" >>$(BUILD_DETAILS_FILE) @ { $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -lrt .featuretest.c -o .featuretest$(EXEC_SUFFIX) >&2 && \ ( echo "found."; echo "CLOCK_GETTIME := yes" >>.features.tmp ) || \ ( echo "not found."; echo "CLOCK_GETTIME := no" >>.features.tmp ) } \ 2>>$(BUILD_DETAILS_FILE) | tee -a $(BUILD_DETAILS_FILE) +endif @$(DIFF) -q .features.tmp .features >/dev/null 2>&1 && rm .features.tmp || mv .features.tmp .features @rm -f .featuretest.c .featuretest$(EXEC_SUFFIX) -- cgit v1.2.3