glibc/sysdeps/unix
Florian Weimer c44838ebf8 Add libc ABI extension kludge for baseline-violating libdl symbols
Some targets have a GLIBC_2.0 baseline for libdl, while using
GLIBC_2.2 for libc.  This means that the generated libc.map file
does not have any version nodes for GLIBC_2.0 or GLIBC_2.1.  However,
moving symbols from libdl into libc needs such version nodes.
(Future symbol moves from librt will need this as well.)

This kludge is only necessary for symbols predating GLIBC_2.2 because
the affected targets use GLIBC_2.2 as the baseline for libc.  Given
the small number and fixed set of affected architectures, no generic
mechanism is implemented, and instead the map file fragment is
hard-coded in scripts/versions.mk.

The compat_symbol macro already emits the appropriate version strings,
so no adjustments are needed there.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-06-02 07:34:24 +02:00
..
alpha
arm
bsd
i386
inet
mips
powerpc
sh
sysv/linux Add libc ABI extension kludge for baseline-violating libdl symbols 2021-06-02 07:34:24 +02:00
x86_64
Implies
Makefile
confstr.h
get_child_max.c
getlogin.c
getlogin_r.c
getpagesize.c
grantpt.c
ifreq.c
make-syscalls.sh
s-proto-cancel.S
s-proto.S
setxid.h
sockatmark.c
syscall-template.S
syscall.S
syscalls.list
sysdep.h Linux: Explicitly disable cancellation checking in the dynamic loader 2021-05-10 10:31:41 +02:00