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Date: Sun, 7 Apr 2024 19:18:48 +0200
From: Thomas Petazzoni <thomas.petazzoni@...tlin.com>
To: busybox@...ybox.net, musl@...ts.openwall.com
Cc: Waldemar Brodkorb <wbx@...nadk.org>
Subject: Busybox hwclock failing to build with musl RISC-V 32-bit:
SYS_settimeofday undefined
Hello,
The recently released musl 1.2.5 includes 32-bit RISC-V support. Turns
out that building Busybox 1.36.1 with this new musl version, on 32-bit
RISC-V, fails with:
util-linux/hwclock.c: In function 'set_kernel_tz':
util-linux/hwclock.c:142:27: error: 'SYS_settimeofday' undeclared (first use in this function); did you mean 'xsettimeofday'?
142 | int ret = syscall(SYS_settimeofday, NULL, tz);
| ^~~~~~~~~~~~~~~~
| xsettimeofday
util-linux/hwclock.c:142:27: note: each undeclared identifier is reported only once for each function it appears in
Busybox already includes some slightly convoluted sorcery to deal with
musl:
static void set_kernel_tz(const struct timezone *tz)
{
#if LIBC_IS_MUSL
/* musl libc does not pass tz argument to syscall
* because "it's deprecated by POSIX, therefore it's fine
* if we gratuitously break stuff" :(
*/
#if !defined(SYS_settimeofday) && defined(SYS_settimeofday_time32)
# define SYS_settimeofday SYS_settimeofday_time32
#endif
int ret = syscall(SYS_settimeofday, NULL, tz);
#else
int ret = settimeofday(NULL, tz);
#endif
if (ret)
bb_simple_perror_msg_and_die("settimeofday");
}
I am not sure whether this is a Busybox problem or a musl problem,
which is why I'm cross-posting on both mailing lists.
Thanks a lot in advance for your feedback,
Thomas
--
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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