3 # A replacement for autoconf's macro by the same name. This version
4 # accepts an optional argument specifying the name of the $srcdir-relative
5 # directory in which the file getloadavg.c may be found. It is unusual
6 # (but justified, imho) that this file is required at ./configure time.
8 undefine([AC_FUNC_GETLOADAVG])
12 AC_DEFUN([AC_FUNC_GETLOADAVG],
13 [ac_have_func=no # yes means we've found a way to get the load average.
15 AC_CHECK_HEADERS_ONCE(fcntl.h locale.h unistd.h)
16 AC_CHECK_HEADERS(mach/mach.h)
17 AC_CHECK_FUNCS(setlocale)
19 # By default, expect to find getloadavg.c in $srcdir/.
20 ac_lib_dir_getloadavg=$srcdir
21 # But if there's an argument, DIR, expect to find getloadavg.c in $srcdir/DIR.
22 m4_ifval([$1], [ac_lib_dir_getloadavg=$srcdir/$1])
23 # Make sure getloadavg.c is where it belongs, at ./configure-time.
24 test -f $ac_lib_dir_getloadavg/getloadavg.c \
25 || AC_MSG_ERROR([getloadavg.c is not in $ac_lib_dir_getloadavg])
26 # FIXME: Add an autoconf-time test, too?
30 # Check for getloadavg, but be sure not to touch the cache variable.
31 (AC_CHECK_FUNC(getloadavg, exit 0, exit 1)) && ac_have_func=yes
33 # On HPUX9, an unprivileged user can get load averages through this function.
34 AC_CHECK_FUNCS(pstat_getdynamic)
36 # Solaris has libkstat which does not require root.
37 AC_CHECK_LIB(kstat, kstat_open)
38 test $ac_cv_lib_kstat_kstat_open = yes && ac_have_func=yes
40 # Some systems with -lutil have (and need) -lkvm as well, some do not.
41 # On Solaris, -lkvm requires nlist from -lelf, so check that first
42 # to get the right answer into the cache.
43 # For kstat on solaris, we need libelf to force the definition of SVR4 below.
44 if test $ac_have_func = no; then
45 AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
47 if test $ac_have_func = no; then
48 AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
49 # Check for the 4.4BSD definition of getloadavg.
50 AC_CHECK_LIB(util, getloadavg,
51 [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
54 if test $ac_have_func = no; then
55 # There is a commonly available library for RS/6000 AIX.
56 # Since it is not a standard part of AIX, it might be installed locally.
57 ac_getloadavg_LIBS=$LIBS
58 LIBS="-L/usr/local/lib $LIBS"
59 AC_CHECK_LIB(getloadavg, getloadavg,
60 [LIBS="-lgetloadavg $LIBS"], [LIBS=$ac_getloadavg_LIBS])
63 # Make sure it is really in the library, if we think we found it,
64 # otherwise set up the replacement function.
65 AC_CHECK_FUNCS(getloadavg, [],
66 [_AC_LIBOBJ_GETLOADAVG])
68 # Some definitions of getloadavg require that the program be installed setgid.
69 AC_CACHE_CHECK(whether getloadavg requires setgid,
70 ac_cv_func_getloadavg_setgid,
71 [AC_EGREP_CPP([Yowza Am I SETGID yet],
72 [#include "$ac_lib_dir_getloadavg/getloadavg.c"
73 #ifdef LDAV_PRIVILEGED
76 ac_cv_func_getloadavg_setgid=yes,
77 ac_cv_func_getloadavg_setgid=no)])
78 if test $ac_cv_func_getloadavg_setgid = yes; then
80 AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
81 [Define if the `getloadavg' function needs to be run setuid
86 AC_SUBST(NEED_SETGID)dnl
88 if test $ac_cv_func_getloadavg_setgid = yes; then
89 AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
90 [ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
91 ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
92 # If we got an error (system does not support symlinks), try without -L.
93 test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
94 ac_cv_group_kmem=`echo $ac_ls_output \
95 | sed -ne ['s/[ ][ ]*/ /g;
96 s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
99 AC_SUBST(KMEM_GROUP, $ac_cv_group_kmem)dnl
101 if test "x$ac_save_LIBS" = x; then
102 GETLOADAVG_LIBS=$LIBS
104 GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$ac_save_LIBS!!"`
108 AC_SUBST(GETLOADAVG_LIBS)dnl
109 ])# AC_FUNC_GETLOADAVG
112 AC_DEFUN([gl_FUNC_GETLOADAVG],
114 AC_FUNC_GETLOADAVG([lib])
115 dnl Note AC_FUNC_GETLOADAVG does AC_LIBOBJ(getloadavg).
116 if test $ac_cv_func_getloadavg = no; then
121 # Prerequisites of lib/getloadavg.c not done by autoconf's AC_FUNC_GETLOADAVG.
122 AC_DEFUN([gl_PREREQ_GETLOADAVG],
124 AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)