- (SOURCE_DATE="$${SOURCE_DATE_EPOCH:+@$$SOURCE_DATE_EPOCH}"; \
- LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
- LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TIME "%T"'; \
- LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TZ "%z"' )
+ (if test -n "$${SOURCE_DATE_EPOCH}"; then \
+ SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
+ DATE=""; \
+ for date in gdate date.gnu date; do \
+ $${date} -u -d "$${SOURCE_DATE}" >/dev/null 2>&1 && DATE="$${date}"; \
+ done; \
+ if test -n "$${DATE}"; then \
+ LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
+ LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
+ LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
+ LC_ALL=C $${DATE} -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
+ else \
+ return 42; \
+ fi; \
+ else \
+ LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
+ LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
+ LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
+ LC_ALL=C date +'#define U_BOOT_DMI_DATE "%m/%d/%Y"'; \
+ fi)