X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetloadavg.m4;h=b75e05fa0561695f9c30d89ed598bfd133f3f436;hb=aa4ddc348b91b7d8846e57c004f356a8b7b7da82;hp=bb52d8ab1afef08739178a21947f7b15ffbb0bfe;hpb=409d8f2d902cc6e12e40b08200f5dac27d0e98cb;p=gnulib.git diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4 index bb52d8ab1..b75e05fa0 100644 --- a/m4/getloadavg.m4 +++ b/m4/getloadavg.m4 @@ -1,124 +1,154 @@ -#serial 2 - -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" - -# 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 +# Check for getloadavg. -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 +# 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 4 + +# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent. +# New applications should use gl_GETLOADAVG instead. + +# gl_GETLOADAVG +# ------------- +AC_DEFUN([gl_GETLOADAVG], +[AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + +# Persuade glibc to declare getloadavg(). +AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + +gl_save_LIBS=$LIBS + +# getloadvg is present in libc on glibc >= 2.2, MacOS X, FreeBSD >= 2.0, +# NetBSD >= 0.9, OpenBSD >= 2.0, Solaris >= 7. +HAVE_GETLOADAVG=1 +AC_CHECK_FUNC([getloadavg], [], + [gl_func_getloadavg_done=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_func_getloadavg_done = 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_func_getloadavg_done=yes]) + fi + + if test $gl_func_getloadavg_done = no; then + # There is a commonly available library for RS/6000 AIX. + # Since it is not a standard part of AIX, it might be installed locally. + gl_getloadavg_LIBS=$LIBS + LIBS="-L/usr/local/lib $LIBS" + AC_CHECK_LIB([getloadavg], [getloadavg], + [LIBS="-lgetloadavg $LIBS" gl_func_getloadavg_done=yes], + [LIBS=$gl_getloadavg_LIBS]) + fi + + # Set up the replacement function if necessary. + if test $gl_func_getloadavg_done = no; then + HAVE_GETLOADAVG=0 + + # Solaris has libkstat which does not require root. + AC_CHECK_LIB([kstat], [kstat_open]) + test $ac_cv_lib_kstat_kstat_open = yes && gl_func_getloadavg_done=yes + + # AIX has libperfstat which does not require root + if test $gl_func_getloadavg_done = no; then + AC_CHECK_LIB([perfstat], [perfstat_cpu_total]) + test $ac_cv_lib_perfstat_perfstat_cpu_total = yes && gl_func_getloadavg_done=yes + fi -# Make sure it is really in the library, if we think we found it. -AC_REPLACE_FUNCS(getloadavg) + if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([sys/dg_sys_info.h], + [gl_func_getloadavg_done=yes + AC_DEFINE([DGUX], [1], [Define to 1 for DGUX with .]) + AC_CHECK_LIB([dgc], [dg_sys_info])]) + fi + fi]) -if test $ac_cv_func_getloadavg = yes; then - AC_DEFINE(HAVE_GETLOADAVG) - ac_have_func=yes +if test "x$gl_save_LIBS" = x; then + GETLOADAVG_LIBS=$LIBS 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 , because Solaris 2 does not use dwarf (it - # uses stabs), but it is still SVR4. We cannot check for 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 ], - [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 $ac_cv_func_getloadavg_setgid = yes; then - NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED) + GETLOADAVG_LIBS=`echo "$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 , not . +AC_CHECK_HEADERS([sys/loadavg.h]) +if test $ac_cv_header_sys_loadavg_h = yes; then + HAVE_SYS_LOADAVG_H=1 else - NEED_SETGID=false + HAVE_SYS_LOADAVG_H=0 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 +AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0], + [#if HAVE_SYS_LOADAVG_H + # include + #endif + #include ]) +])# 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. + +# On HPUX9, an unprivileged user can get load averages this way. +if test $gl_func_getloadavg_done = no; then + AC_CHECK_FUNCS([pstat_getdynamic], [gl_func_getloadavg_done=yes]) fi -AC_SUBST(KMEM_GROUP)dnl -if test x = "x$am_cv_saved_LIBS"; then - GETLOADAVG_LIBS="$LIBS" -else - GETLOADAVG_LIBS=`echo "$LIBS"|sed "s!$am_cv_saved_LIBS!!"` +# We cannot check for , because Solaris 2 does not use dwarf (it +# uses stabs), but it is still SVR4. We cannot check for because +# Irix 4.0.5F has the header but not the library. +if test $gl_func_getloadavg_done = no && test "$ac_cv_lib_elf_elf_begin" = yes \ + && test "$ac_cv_lib_kvm_kvm_open" = yes; then + gl_func_getloadavg_done=yes + AC_DEFINE([SVR4], [1], [Define to 1 on System V Release 4.]) fi -AC_SUBST(GETLOADAVG_LIBS)dnl -LIBS="$am_cv_saved_LIBS" -]) + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([inq_stats/cpustats.h], + [gl_func_getloadavg_done=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 + instead of .])]) +fi + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([sys/cpustats.h], + [gl_func_getloadavg_done=yes; AC_DEFINE([UMAX])]) +fi + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADERS([mach/mach.h]) +fi + +AC_CHECK_HEADERS([nlist.h], +[AC_CHECK_MEMBERS([struct nlist.n_un.n_name], + [], [], + [@%:@include ]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], + [[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