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#serial 3
AC_DEFUN(AM_FUNC_GETLOADAVG,
[ac_have_func=no # yes means we've found a way to get the load average.
am_cv_saved_LIBS="$LIBS"
# 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)
if test $ac_cv_lib_kstat_kstat_open = yes ; then ac_have_func=yes ; fi
# 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.
AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
if test $ac_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" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
fi
if test $ac_have_func = no; then
# There is a commonly available library for RS/6000 AIX.
# Since it is not a standard part of AIX, it might be installed locally.
ac_save_LIBS="$LIBS"
LIBS="-L/usr/local/lib $LIBS"
AC_CHECK_LIB(getloadavg, getloadavg,
LIBS="-lgetloadavg $LIBS", LIBS="$ac_save_LIBS")
fi
# Make sure it is really in the library, if we think we found it.
AC_REPLACE_FUNCS(getloadavg)
if test $ac_cv_func_getloadavg = yes; then
AC_DEFINE(HAVE_GETLOADAVG)
ac_have_func=yes
else
AC_DEFINE(C_GETLOADAVG)
# Figure out what our getloadavg.c needs.
ac_have_func=no
AC_CHECK_HEADER(sys/dg_sys_info.h,
[ac_have_func=yes; AC_DEFINE(DGUX)
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 $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
ac_have_func=yes; AC_DEFINE(SVR4)
fi
if test $ac_have_func = no; then
AC_CHECK_HEADER(inq_stats/cpustats.h,
[ac_have_func=yes; AC_DEFINE(UMAX)
AC_DEFINE(UMAX4_3)])
fi
if test $ac_have_func = no; then
AC_CHECK_HEADER(sys/cpustats.h,
[ac_have_func=yes; AC_DEFINE(UMAX)])
fi
if test $ac_have_func = no; then
AC_CHECK_HEADERS(mach/mach.h)
fi
AC_CHECK_HEADER(nlist.h,
[AC_DEFINE(NLIST_STRUCT)
AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
[AC_TRY_COMPILE([#include <nlist.h>],
[struct nlist n; n.n_un.n_name = 0;],
ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
if test $ac_cv_struct_nlist_n_un = yes; then
AC_DEFINE(NLIST_NAME_UNION)
fi
])dnl
fi # Do not have getloadavg in system libraries.
# Some definitions of getloadavg require that the program be installed setgid.
dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory.
AC_CACHE_CHECK(whether getloadavg requires setgid,
ac_cv_func_getloadavg_setgid,
[AC_EGREP_CPP([Yowza Am I SETGID yet],
[#include "$srcdir/lib/getloadavg.c"
#ifdef LDAV_PRIVILEGED
Yowza Am I SETGID yet
#endif],
ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
if test $ac_cv_func_getloadavg_setgid = yes; then
NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED)
else
NEED_SETGID=false
fi
AC_SUBST(NEED_SETGID)dnl
if test $ac_cv_func_getloadavg_setgid = yes; then
AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
changequote(<<, >>)dnl
<<
# On Solaris, /dev/kmem is a symlink. Get info on the real file.
ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
# If we got an error (system does not support symlinks), try without -L.
test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
ac_cv_group_kmem=`echo $ac_ls_output \
| sed -ne 's/[ ][ ]*/ /g;
s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
/ /s/.* //;p;'`
>>
changequote([, ])dnl
)
KMEM_GROUP=$ac_cv_group_kmem
fi
AC_SUBST(KMEM_GROUP)dnl
if test x = "x$am_cv_saved_LIBS"; then
GETLOADAVG_LIBS="$LIBS"
else
GETLOADAVG_LIBS=`echo "$LIBS"|sed "s!$am_cv_saved_LIBS!!"`
fi
AC_SUBST(GETLOADAVG_LIBS)dnl
LIBS="$am_cv_saved_LIBS"
])
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