diff options
Diffstat (limited to 'gl/m4/getloadavg.m4')
| -rw-r--r-- | gl/m4/getloadavg.m4 | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/gl/m4/getloadavg.m4 b/gl/m4/getloadavg.m4 new file mode 100644 index 00000000..82437291 --- /dev/null +++ b/gl/m4/getloadavg.m4 @@ -0,0 +1,155 @@ +# Check for getloadavg. + +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, +# 2006 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. + +# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent. +# New applications should use gl_GETLOADAVG instead. + +# gl_GETLOADAVG(LIBOBJDIR) +# ------------------------ +AC_DEFUN([gl_GETLOADAVG], +[gl_have_func=no # yes means we've found a way to get the load average. + +# 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 + +# Check for getloadavg, but be sure not to touch the cache variable. +(AC_CHECK_FUNC(getloadavg, exit 0, exit 1)) && gl_have_func=yes + +# On HPUX9, an unprivileged user can get load averages through this function. +AC_CHECK_FUNCS(pstat_getdynamic) + +# 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 + +# 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 libelf to force the definition of SVR4 below. +if test $gl_have_func = no; then + AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS") +fi +if test $gl_have_func = no; then + 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 gl_cv_func_getloadavg_setgid=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 $LIBS"], [LIBS=$gl_getloadavg_LIBS]) +fi + +# Make sure it is really in the library, if we think we found it, +# otherwise set up the replacement function. +AC_CHECK_FUNCS(getloadavg, [], + [gl_PREREQ_GETLOADAVG]) + +# Some definitions of getloadavg require that the program be installed setgid. +AC_CACHE_CHECK(whether getloadavg requires setgid, + gl_cv_func_getloadavg_setgid, +[AC_EGREP_CPP([Yowza Am I SETGID yet], +[#define CONFIGURING_GETLOADAVG +#include "$srcdir/$1/getloadavg.c" +#ifdef LDAV_PRIVILEGED +Yowza Am I SETGID yet +#endif +], + gl_cv_func_getloadavg_setgid=yes, + gl_cv_func_getloadavg_setgid=no)]) +if test $gl_cv_func_getloadavg_setgid = yes; then + NEED_SETGID=true + AC_DEFINE(GETLOADAVG_PRIVILEGED, 1, + [Define to 1 if the `getloadavg' function needs to be run setuid + or setgid.]) +else + NEED_SETGID=false +fi +AC_SUBST(NEED_SETGID)dnl + +if test $gl_cv_func_getloadavg_setgid = yes; then + AC_CACHE_CHECK(group of /dev/kmem, gl_cv_group_kmem, +[ # On Solaris, /dev/kmem is a symlink. Get info on the real file. + ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null` + # If we got an error (system does not support symlinks), try without -L. + test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem` + gl_cv_group_kmem=`echo $ac_ls_output \ + | sed -ne ['s/[ ][ ]*/ /g + s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/ + / /s/.* //;p']` +]) + AC_SUBST(KMEM_GROUP, $gl_cv_group_kmem)dnl +fi +if test "x$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 +])# gl_GETLOADAVG + + +# gl_PREREQ_GETLOADAVG +# -------------------- +# Set up the AC_LIBOBJ replacement of `getloadavg'. +AC_DEFUN([gl_PREREQ_GETLOADAVG], +[AC_LIBOBJ(getloadavg) +AC_DEFINE(C_GETLOADAVG, 1, [Define to 1 if using `getloadavg.c'.]) +# Figure out what our getloadavg.c needs. +gl_have_func=no +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)]) + +# 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; 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], + [AC_DEFINE(NLIST_NAME_UNION, 1, + [Define to 1 if your `struct nlist' has an + `n_un' member. Obsolete, depend on + `HAVE_STRUCT_NLIST_N_UN_N_NAME])], [], + [@%:@include <nlist.h>]) +])dnl +])# gl_PREREQ_GETLOADAVG |