123 lines
4.4 KiB
Plaintext
123 lines
4.4 KiB
Plaintext
# readutmp.m4
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# serial 31
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dnl Copyright (C) 2002-2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_READUTMP],
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[
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AC_REQUIRE([gl_SYSTEMD_CHOICE])
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dnl Set READUTMP_LIB to '-lsystemd' or '', depending on whether use of
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dnl systemd APIs is possible and desired (only the systemd login API, here).
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dnl AC_LIB_LINKFLAGS_BODY would be overkill here, since few people install
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dnl libsystemd in non-system directories.
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READUTMP_LIB=
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if test "$SYSTEMD_CHOICE" = yes; then
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AC_CHECK_HEADER([systemd/sd-login.h])
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if test $ac_cv_header_systemd_sd_login_h = yes; then
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AC_CACHE_CHECK([for libsystemd version >= 254],
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[gl_cv_lib_readutmp_systemd],
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[gl_saved_LIBS="$LIBS"
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LIBS="$LIBS -lsystemd"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <stdint.h>
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#include <systemd/sd-login.h>
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]], [[
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uint64_t st;
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sd_session_get_start_time ("1", &st);
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]])
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],
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[gl_cv_lib_readutmp_systemd=yes],
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[gl_cv_lib_readutmp_systemd=no])
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LIBS="$gl_saved_LIBS"
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])
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if test $gl_cv_lib_readutmp_systemd = yes; then
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AC_DEFINE([READUTMP_USE_SYSTEMD], [1],
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[Define if the readutmp module should use the systemd login API.])
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READUTMP_LIB='-lsystemd'
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fi
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fi
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fi
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AC_SUBST([READUTMP_LIB])
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gl_PREREQ_READUTMP_H
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])
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# Prerequisites of readutmp.h and boot-time-aux.h.
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AC_DEFUN_ONCE([gl_PREREQ_READUTMP_H],
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[
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dnl Persuade utmpx.h to declare utmpxname
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_HEADERS_ONCE([utmp.h utmpx.h])
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if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
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dnl Prerequisites of lib/readutmp.h and lib/readutmp.c.
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AC_CHECK_FUNCS_ONCE([utmpname utmpxname])
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AC_CHECK_DECLS([endutent],,,[[
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/* <sys/types.h> is a prerequisite of <utmp.h> on FreeBSD 8.0, OpenBSD 4.6. */
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#include <sys/types.h>
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#ifdef HAVE_UTMP_H
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# include <utmp.h>
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#endif
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]])
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utmp_includes="\
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AC_INCLUDES_DEFAULT
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#ifdef HAVE_UTMPX_H
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# include <utmpx.h>
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#endif
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#ifdef HAVE_UTMP_H
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# if defined _THREAD_SAFE && defined UTMP_DATA_INIT
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/* When including both utmp.h and utmpx.h on AIX 4.3, with _THREAD_SAFE
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defined, work around the duplicate struct utmp_data declaration. */
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# define utmp_data gl_aix_4_3_workaround_utmp_data
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# endif
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# include <utmp.h>
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#endif
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"
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AC_CHECK_MEMBERS([struct utmpx.ut_user],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_user],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_name],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_name],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_type],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_type],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_pid],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_pid],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_tv],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_host],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_host],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_id],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_id],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_session],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_session],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_exit],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_exit],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_exit],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_exit],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_exit.e_exit],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_exit.ut_termination],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmpx.ut_exit.e_termination],,,[$utmp_includes])
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AC_CHECK_MEMBERS([struct utmp.ut_exit.e_termination],,,[$utmp_includes])
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fi
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AC_CHECK_DECLS([sysinfo],,,[[
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#include <sys/sysinfo.h>
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]])
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AC_CHECK_HEADERS_ONCE([sys/param.h])
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dnl <sys/sysctl.h> requires <sys/param.h> on OpenBSD 4.0.
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AC_CHECK_HEADERS([sys/sysctl.h],,,
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[AC_INCLUDES_DEFAULT
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#if HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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])
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AC_CHECK_FUNCS([sysctl])
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AC_CHECK_HEADERS_ONCE([OS.h])
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])
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