--- /dev/null
+# Check for getloadavg.
+
+# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2011 Free Software
+# Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+#serial 2
+
+# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent.
+# New applications should use gl_GETLOADAVG instead.
+
+# gl_GETLOADAVG(LIBOBJDIR)
+# ------------------------
+AC_DEFUN([gl_GETLOADAVG],
+[AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+# Persuade glibc <stdlib.h> to declare getloadavg().
+AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+# Make sure getloadavg.c is where it belongs, at configure-time.
+test -f "$srcdir/$1/getloadavg.c" ||
+ AC_MSG_ERROR([$srcdir/$1/getloadavg.c is missing])
+
+gl_save_LIBS=$LIBS
+
+AC_CHECK_FUNC([getloadavg], [],
+ [gl_have_func=no
+
+ # Some systems with -lutil have (and need) -lkvm as well, some do not.
+ # On Solaris, -lkvm requires nlist from -lelf, so check that first
+ # to get the right answer into the cache.
+ # For kstat on solaris, we need to test for libelf and libkvm to force the
+ # definition of SVR4 below.
+ if test $gl_have_func = no; then
+ AC_CHECK_LIB([elf], [elf_begin], [LIBS="-lelf $LIBS"])
+ AC_CHECK_LIB([kvm], [kvm_open], [LIBS="-lkvm $LIBS"])
+ # Check for the 4.4BSD definition of getloadavg.
+ AC_CHECK_LIB([util], [getloadavg],
+ [LIBS="-lutil $LIBS" gl_have_func=yes])
+ fi
+
+ if test $gl_have_func = no; then
+ # There is a commonly available library for RS/6000 AIX.
+ # Since it is not a standard part of AIX, it might be installed locally.
+ gl_getloadavg_LIBS=$LIBS
+ LIBS="-L/usr/local/lib $LIBS"
+ AC_CHECK_LIB([getloadavg], [getloadavg],
+ [LIBS="-lgetloadavg $LIBS" gl_have_func=yes],
+ [LIBS=$gl_getloadavg_LIBS])
+ fi
+
+ # Set up the replacement function if necessary.
+ if test $gl_have_func = no; then
+ AC_LIBOBJ([getloadavg])
+ gl_PREREQ_GETLOADAVG
+ fi])
+
+if test "x$gl_save_LIBS" = x; then
+ GETLOADAVG_LIBS=$LIBS
+else
+ GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$gl_save_LIBS!!"`
+fi
+LIBS=$gl_save_LIBS
+
+AC_SUBST([GETLOADAVG_LIBS])dnl
+
+# Test whether the system declares getloadavg. Solaris has the function
+# but declares it in <sys/loadavg.h>, not <stdlib.h>.
+AC_CHECK_HEADERS([sys/loadavg.h])
+if test $ac_cv_header_sys_loadavg_h = yes; then
+ HAVE_SYS_LOADAVG_H=1
+else
+ HAVE_SYS_LOADAVG_H=0
+fi
+AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0],
+ [#if HAVE_SYS_LOADAVG_H
+ # include <sys/loadavg.h>
+ #endif
+ #include <stdlib.h>])
+])# gl_GETLOADAVG
+
+
+# gl_PREREQ_GETLOADAVG
+# --------------------
+# Set up the AC_LIBOBJ replacement of `getloadavg'.
+AC_DEFUN([gl_PREREQ_GETLOADAVG],
+[
+# Figure out what our getloadavg.c needs.
+
+# Solaris has libkstat which does not require root.
+AC_CHECK_LIB([kstat], [kstat_open])
+test $ac_cv_lib_kstat_kstat_open = yes && gl_have_func=yes
+
+# On HPUX9, an unprivileged user can get load averages this way.
+if test $gl_have_func = no; then
+ AC_CHECK_FUNCS([pstat_getdynamic], [gl_have_func=yes])
+fi
+
+# AIX has libperfstat which does not require root
+if test $gl_have_func = no; then
+ AC_CHECK_LIB([perfstat], [perfstat_cpu_total])
+ test $ac_cv_lib_perfstat_perfstat_cpu_total = yes && gl_have_func=yes
+fi
+
+if test $gl_have_func = no; then
+ AC_CHECK_HEADER([sys/dg_sys_info.h],
+ [gl_have_func=yes
+ AC_DEFINE([DGUX], [1], [Define to 1 for DGUX with <sys/dg_sys_info.h>.])
+ AC_CHECK_LIB([dgc], [dg_sys_info])])
+fi
+
+# We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
+# uses stabs), but it is still SVR4. We cannot check for <elf.h> because
+# Irix 4.0.5F has the header but not the library.
+if test $gl_have_func = no && test "$ac_cv_lib_elf_elf_begin" = yes \
+ && test "$ac_cv_lib_kvm_kvm_open" = yes; then
+ gl_have_func=yes
+ AC_DEFINE([SVR4], [1], [Define to 1 on System V Release 4.])
+fi
+
+if test $gl_have_func = no; then
+ AC_CHECK_HEADER([inq_stats/cpustats.h],
+ [gl_have_func=yes
+ AC_DEFINE([UMAX], [1], [Define to 1 for Encore UMAX.])
+ AC_DEFINE([UMAX4_3], [1],
+ [Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+ instead of <sys/cpustats.h>.])])
+fi
+
+if test $gl_have_func = no; then
+ AC_CHECK_HEADER([sys/cpustats.h],
+ [gl_have_func=yes; AC_DEFINE([UMAX])])
+fi
+
+if test $gl_have_func = no; then
+ AC_CHECK_HEADERS([mach/mach.h])
+fi
+
+AC_CHECK_HEADERS([nlist.h],
+[AC_CHECK_MEMBERS([struct nlist.n_un.n_name],
+ [], [],
+ [@%:@include <nlist.h>])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
+ [[struct nlist x;
+ #ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
+ x.n_un.n_name = "";
+ #else
+ x.n_name = "";
+ #endif]])],
+ [AC_DEFINE([N_NAME_POINTER], [1],
+ [Define to 1 if the nlist n_name member is a pointer])])
+])dnl
+])# gl_PREREQ_GETLOADAVG
HCoop / bpt / emacs.git / blobdiff