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| author | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-08-28 10:29:55 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-08-28 12:33:19 -0400 |
| commit | 2d9efa1227262249d381ed5d9d341cbdba76e62d (patch) | |
| tree | 14517434daab739b28e47fca4ca3b9671d525d9c | |
| parent | 9316412f46fbdeec81a3f5a40bae383a405b9a4a (diff) | |
Makefile: fix SOURCE_DATE_EPOCH for *BSD host
The SOURCE_DATE_EPOCH mechanism for reproducible builds require some date(1)
with -d switch to print the relevant date and time strings of another point of
time.
In other words it requires some date(1) that behaves like the GNU date(1) [1].
The BSD date(1) [2] on the other hand has the same switch but with a different
meaning.
Respect this and check the date(1) abilities before usage, error on non
working version. Use the well known pre- and suffixes for the GNU variant of
a tool on *BSD hosts to search for a working date(1) version.
[1] http://man7.org/linux/man-pages/man1/date.1.html [2]
http://www.freebsd.org/cgi/man.cgi?query=date
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
| -rw-r--r-- | Makefile | 18 |
1 files changed, 15 insertions, 3 deletions
@@ -1263,12 +1263,24 @@ define filechk_version.h echo \#define LD_VERSION_STRING \"$$($(LD) --version | head -n 1)\"; ) endef +# The SOURCE_DATE_EPOCH mechanism requires a date that behaves like GNU date. +# The BSD date on the other hand behaves different and would produce errors +# with the misused '-d' switch. Respect that and search a working date with +# well known pre- and suffixes for the GNU variant of date. define filechk_timestamp.h (if test -n "$${SOURCE_DATE_EPOCH}"; then \ SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \ - LC_ALL=C date -u -d "$${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"'; \ + 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"'; \ + 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"'; \ |