glibc/time/Versions
Zack Weinberg 7b5af2d8f2 Finish move of clock_* functions to libc. [BZ #24959]
In glibc 2.17, the functions clock_getcpuclockid, clock_getres,
clock_gettime, clock_nanosleep, and clock_settime were moved from
librt.so to libc.so, leaving compatibility stubs behind.  Now that the
dynamic linker no longer insists on finding versioned symbols in the
same library that originally defined them, we do not need the stubs
anymore, and this means we don't need GLIBC_PRIVATE __-prefix aliases
for most of the functions anymore either.  (clock_gettime still needs
one.)  For ports added before 2.17, libc.so needs to provide two
symbol versions for each, the default at GLIBC_2.17 plus a compat
version matching what librt had.

While I'm at it, move the clock_*.c files and their tests from rt/ to
time/.
2019-09-04 14:39:38 +02:00

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libc {
GLIBC_2.0 {
# global variables
__daylight; __timezone; __tzname;
# functions with special/multiple interfaces
__adjtimex;
# functions used in other libraries
__gmtime_r; __gettimeofday;
# variables in normal name space
daylight; timezone; tzname;
# a*
adjtime; adjtimex; asctime; asctime_r;
# c*
clock; ctime; ctime_r;
# d*
difftime; dysize;
# f*
ftime;
# g*
getitimer; gettimeofday; gmtime; gmtime_r;
# l*
localtime; localtime_r;
# m*
mktime;
# s*
setitimer; settimeofday; stime; strftime; strptime;
# t*
time; timegm; timelocal; tzset;
}
GLIBC_2.1 {
# variables in normal name space
getdate_err;
# g*
getdate; getdate_r;
}
GLIBC_2.2 {
# w*
wcsftime;
# c*; actually in librt in version 2.2, moved to libc in 2.17
clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
clock_nanosleep;
}
GLIBC_2.3 {
# these internal names are used by libstdc++
__strftime_l; __wcsftime_l;
# s*
strftime_l;
# w*
wcsftime_l;
}
GLIBC_2.3.2 {
strptime_l;
}
GLIBC_2.16 {
timespec_get;
}
GLIBC_2.17 {
# c*
clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
clock_nanosleep;
}
GLIBC_PRIVATE {
# same as clock_gettime; used in other libraries
__clock_gettime;
}
}