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(AM_FUNC_GETLOADAVG): Replace with AC_FUNC_GETLOADAVG
from autoconf, and tweak the latter to accept an optional argument.
This commit is contained in:
Jim Meyering
128
m4/getloadavg.m4
128
m4/getloadavg.m4
@@ -1,22 +1,45 @@
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#serial 6
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#serial 7
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AC_DEFUN(AM_FUNC_GETLOADAVG,
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# A replacement for autoconf's macro by the same name. This version
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# accepts an optional argument specifying the name of the $srcdir-relative
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# directory in which the file getloadavg.c may be found. It is unusual
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# (but justified, imho) that this file is required at ./configure time.
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undefine([AC_FUNC_GETLOADAVG])
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# AC_FUNC_GETLOADAVG
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# ------------------
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AC_DEFUN([AC_FUNC_GETLOADAVG],
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[ac_have_func=no # yes means we've found a way to get the load average.
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am_cv_saved_LIBS="$LIBS"
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# By default, expect to find getloadavg.c in $srcdir/.
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ac_lib_dir_getloadavg=$srcdir
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# But if there's an argument, DIR, expect to find getloadavg.c in $srcdir/DIR.
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ifval([$1], [ac_lib_dir_getloadavg=$srcdir/$1])
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# Make sure getloadavg.c is where it belongs, at ./configure-time.
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test -f $ac_lib_dir_getloadavg/getloadavg.c \
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|| AC_MSG_ERROR([getloadavg.c is not in $ac_lib_dir_getloadavg])
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# FIXME: Add an autoconf-time test, too?
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ac_save_LIBS=$LIBS
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# Check for getloadavg, but be sure not to touch the cache variable.
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(AC_CHECK_FUNC(getloadavg, exit 0, exit 1)) && ac_have_func=yes
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# On HPUX9, an unprivileged user can get load averages through this function.
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AC_CHECK_FUNCS(pstat_getdynamic)
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# Solaris has libkstat which does not require root.
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AC_CHECK_LIB(kstat, kstat_open)
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if test $ac_cv_lib_kstat_kstat_open = yes ; then ac_have_func=yes ; fi
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test $ac_cv_lib_kstat_kstat_open = yes && ac_have_func=yes
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# Some systems with -lutil have (and need) -lkvm as well, some do not.
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# On Solaris, -lkvm requires nlist from -lelf, so check that first
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# to get the right answer into the cache.
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# For kstat on solaris, we need libelf to force the definition of SVR4 below.
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AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
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if test $ac_have_func = no; then
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AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
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fi
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if test $ac_have_func = no; then
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AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
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# Check for the 4.4BSD definition of getloadavg.
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@@ -27,75 +50,32 @@ fi
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if test $ac_have_func = no; then
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# There is a commonly available library for RS/6000 AIX.
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# Since it is not a standard part of AIX, it might be installed locally.
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ac_save_LIBS="$LIBS"
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ac_getloadavg_LIBS=$LIBS
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LIBS="-L/usr/local/lib $LIBS"
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AC_CHECK_LIB(getloadavg, getloadavg,
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LIBS="-lgetloadavg $LIBS", LIBS="$ac_save_LIBS")
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[LIBS="-lgetloadavg $LIBS"], [LIBS=$ac_getloadavg_LIBS])
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fi
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# Make sure it is really in the library, if we think we found it.
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AC_REPLACE_FUNCS(getloadavg)
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if test $ac_cv_func_getloadavg = yes; then
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AC_DEFINE(HAVE_GETLOADAVG, 1, [FIXME])
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ac_have_func=yes
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else
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AC_DEFINE(C_GETLOADAVG, 1, [Define if using getloadavg.c.])
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# Figure out what our getloadavg.c needs.
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ac_have_func=no
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AC_CHECK_HEADER(sys/dg_sys_info.h,
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[ac_have_func=yes; AC_DEFINE(DGUX, 1, [FIXME])
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AC_CHECK_LIB(dgc, dg_sys_info)])
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AC_CHECK_HEADERS(locale.h)
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AC_CHECK_FUNCS(setlocale)
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# We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
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# uses stabs), but it is still SVR4. We cannot check for <elf.h> because
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# Irix 4.0.5F has the header but not the library.
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if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
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ac_have_func=yes; AC_DEFINE(SVR4, 1, [FIXME])
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fi
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if test $ac_have_func = no; then
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AC_CHECK_HEADER(inq_stats/cpustats.h,
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[ac_have_func=yes; AC_DEFINE(UMAX, 1, [FIXME])
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AC_DEFINE(UMAX4_3, 1, [FIXME])])
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fi
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if test $ac_have_func = no; then
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AC_CHECK_HEADER(sys/cpustats.h,
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[ac_have_func=yes; AC_DEFINE(UMAX, 1, [FIXME])])
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fi
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if test $ac_have_func = no; then
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AC_CHECK_HEADERS(mach/mach.h)
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fi
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AC_CHECK_HEADER(nlist.h,
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[AC_DEFINE(NLIST_STRUCT, 1, [FIXME])
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AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
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[AC_TRY_COMPILE([#include <nlist.h>],
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[struct nlist n; n.n_un.n_name = 0;],
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ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
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if test $ac_cv_struct_nlist_n_un = yes; then
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AC_DEFINE(NLIST_NAME_UNION, 1, [FIXME])
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fi
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])dnl
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fi # Do not have getloadavg in system libraries.
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# Make sure it is really in the library, if we think we found it,
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# otherwise set up the replacement function.
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AC_CHECK_FUNCS(getloadavg, [],
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[_AC_LIBOBJ_GETLOADAVG])
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# Some definitions of getloadavg require that the program be installed setgid.
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dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory.
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AC_CACHE_CHECK(whether getloadavg requires setgid,
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ac_cv_func_getloadavg_setgid,
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ac_cv_func_getloadavg_setgid,
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[AC_EGREP_CPP([Yowza Am I SETGID yet],
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[#include "$srcdir/lib/getloadavg.c"
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[#include "$ac_lib_dir_getloadavg/getloadavg.c"
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#ifdef LDAV_PRIVILEGED
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Yowza Am I SETGID yet
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#endif],
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ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
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@%:@endif],
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ac_cv_func_getloadavg_setgid=yes,
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ac_cv_func_getloadavg_setgid=no)])
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if test $ac_cv_func_getloadavg_setgid = yes; then
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NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED, 1, [FIXME])
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NEED_SETGID=true
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AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
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[Define if the `getloadavg' function needs to be run setuid
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or setgid.])
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else
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NEED_SETGID=false
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fi
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@@ -103,25 +83,21 @@ AC_SUBST(NEED_SETGID)dnl
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if test $ac_cv_func_getloadavg_setgid = yes; then
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AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
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[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
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[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
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ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
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# If we got an error (system does not support symlinks), try without -L.
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test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
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ac_cv_group_kmem=`echo $ac_ls_output \
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| sed -ne 's/[ ][ ]*/ /g;
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| sed -ne ['s/[ ][ ]*/ /g;
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s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
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/ /s/.* //;p;'`
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]
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)
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KMEM_GROUP=$ac_cv_group_kmem
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/ /s/.* //;p;']`
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])
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AC_SUBST(KMEM_GROUP, $ac_cv_group_kmem)dnl
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fi
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AC_SUBST(KMEM_GROUP)dnl
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if test x = "x$am_cv_saved_LIBS"; then
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GETLOADAVG_LIBS="$LIBS"
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if test "x$ac_save_LIBS" = x; then
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GETLOADAVG_LIBS=$LIBS
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else
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GETLOADAVG_LIBS=`echo "$LIBS"|sed "s!$am_cv_saved_LIBS!!"`
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GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$ac_save_LIBS!!"`
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fi
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AC_SUBST(GETLOADAVG_LIBS)dnl
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LIBS="$am_cv_saved_LIBS"
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])
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])# AC_FUNC_GETLOADAVG
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