1995-02-18 09:27:10 +08:00
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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2015-11-25 09:48:22 +08:00
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dnl We need this setting because of the need for PLT calls in ld.so.
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2016-05-31 04:13:47 +08:00
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dnl See Roland's comment in
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dnl https://sourceware.org/bugzilla/show_bug.cgi?id=15605
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Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN
On the Hurd, the rtld needs to see its own dumb versions of a few functions
(defined in sysdeps/mach/hurd/dl-sysdep.c) overridden by libc's versions once
loaded. rtld should thus not have hidden attribute for these. To achieve this,
the Hurd port used to just define NO_HIDDEN, which disables it completely. For
now, this changes that to disabling it for all rtld functions, for simplicity.
See Roland's comment on https://sourceware.org/bugzilla/show_bug.cgi?id=15605#c5
The ld.so numbers remain at
8 .rel.plt 000000c8 00000c24 00000c24 00000c24 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
9 .plt 000001a0 00000cf0 00000cf0 00000cf0 2**4
CONTENTS, ALLOC, LOAD, READONLY, CODE
10 .plt.got 00000010 00000e90 00000e90 00000e90 2**3
CONTENTS, ALLOC, LOAD, READONLY, CODE
18 .got.plt 00000070 0002d000 0002d000 0002c000 2**2
CONTENTS, ALLOC, LOAD, DATA
which is about 3 times as much as on Linux.
The libc.so numbers get divided by 3 (the remainings are mostly RPC stub calls)
* include/libc-symbols.h [NO_RTLD_HIDDEN] (rtld_hidden_proto,
rtld_hidden_tls_proto, rtld_hidden_def, rtld_hidden_weak,
rtld_hidden_rtld_hidden_ver, data_def, rtld_hidden_data_weak,
rtld_hidden_data_ver): Define to empty.
* include/assert.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__assert_fail,
__assert_perror_fail): Likewise.
* include/dirent.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
(__rewinddir): Likewise.
* include/libc-internal.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
(__profile_frequency): Likewise.
* include/setjmp.h (__sigsetjmp): Likewise.
* include/signal.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__sigaction,
__libc_sigaction): Likewise.
* include/stdlib.h [NO_RTLD_HIDDEN] (unsetenv, __strtoul_internal): Do
not set hidden attribute.
* include/string.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__stpcpy, __strdup,
__strerror_t, __strsep_g, memchr, memcmp, memcpy, memmove, memset,
rawmemchr, stpcpy, strchr, strcmp, strlen, strnlen, strsep): Likewise.
* include/sys/stat.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__fxstat,
__fxstat64, __lxstat, __lxstat64, __xstat, __xstat64,
__fxstatat64): Likewise.
* include/sys/utsname.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
(__uname): Likewise.
* include/sysdeps/generic/_itoa.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
(_itoa_upper_digits, _itoa_lower_digits): Likewise.
* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not set.
(NO_RTLD_HIDDEN): Set.
* sysdeps/mach/hurd/configure: Refresh.
* config.h.in: Refresh.
2017-10-03 07:26:58 +08:00
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AC_DEFINE([NO_RTLD_HIDDEN])
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2015-11-25 09:48:22 +08:00
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2015-08-27 05:48:33 +08:00
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if test -n "$sysheaders"; then
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OLD_CPPFLAGS=$CPPFLAGS
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CPPFLAGS="$CPPFLAGS $SYSINCLUDES"
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fi
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2002-06-12 07:04:51 +08:00
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AC_CACHE_CHECK(Hurd header version, libc_cv_hurd_version, [dnl
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2021-05-22 10:42:48 +08:00
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AC_PREPROC_IFELSE([AC_LANG_PROGRAM(dnl
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[[#include <hurd/version.h>]], [[
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2002-06-12 07:04:51 +08:00
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#define NEED_VERSION 20020609
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#if HURD_INTERFACE_VERSION < NEED_VERSION
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# error Hurd version too old: HURD_INTERFACE_VERSION < NEED_VERSION
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2021-05-22 10:42:48 +08:00
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#endif]])],
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[libc_cv_hurd_version=ok],
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[libc_cv_hurd_version=bad])])
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2002-06-12 07:04:51 +08:00
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if test "x$libc_cv_hurd_version" != xok; then
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AC_MSG_ERROR(Hurd headers not installed or too old)
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fi
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2015-08-27 05:48:33 +08:00
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2024-02-18 00:48:46 +08:00
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dnl
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dnl hurd_RPC_CHECK(interface.defs, rpc_method, define)
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dnl
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dnl Check if rpc_method RPC is defined by interface.defs
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dnl and define `define`.
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dnl
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AC_DEFUN([hurd_RPC_CHECK], [dnl
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AC_CACHE_CHECK(for $2 in $1, libc_cv_hurd_rpc_$2, [dnl
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AC_EGREP_HEADER($2, hurd/$1,
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libc_cv_hurd_rpc_$2=yes,
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libc_cv_hurd_rpc_$2=no)])
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if test $libc_cv_hurd_rpc_$2 = yes; then
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AC_DEFINE([$3])
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fi
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])
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hurd_RPC_CHECK(process.defs, proc_getchildren_rusage,
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HAVE_HURD_PROC_GETCHILDREN_RUSAGE)
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2015-08-27 05:48:33 +08:00
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if test -n "$sysheaders"; then
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CPPFLAGS=$OLD_CPPFLAGS
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fi
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2021-05-03 14:12:11 +08:00
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# Hurd has libpthread as a separate library.
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pthread_in_libc=no
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