diff options
Diffstat (limited to 'gl/m4/getloadavg.m4')
| -rw-r--r-- | gl/m4/getloadavg.m4 | 185 |
1 files changed, 77 insertions, 108 deletions
diff --git a/gl/m4/getloadavg.m4 b/gl/m4/getloadavg.m4 index 0a731c4f..611372aa 100644 --- a/gl/m4/getloadavg.m4 +++ b/gl/m4/getloadavg.m4 @@ -1,108 +1,78 @@ # Check for getloadavg. -# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2010 Free Software +# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2013 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 6 + # Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent. # New applications should use gl_GETLOADAVG instead. -# gl_GETLOADAVG(LIBOBJDIR) -# ------------------------ +# gl_GETLOADAVG +# ------------- AC_DEFUN([gl_GETLOADAVG], [AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) # Persuade glibc <stdlib.h> to declare getloadavg(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) -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 - -# AIX has libperfstat which does not require root -AC_CHECK_LIB([perfstat], [perfstat_cpu_total]) -test $ac_cv_lib_perfstat_perfstat_cpu_total = 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 +# getloadvg is present in libc on glibc >= 2.2, Mac OS 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 + + 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 <sys/dg_sys_info.h>.]) + AC_CHECK_LIB([dgc], [dg_sys_info])]) + fi + 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 @@ -121,58 +91,57 @@ else HAVE_SYS_LOADAVG_H=0 fi AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0], - [#if HAVE_SYS_LOADAVG_H - # include <sys/loadavg.h> - #endif - #include <stdlib.h>]) + [[#if HAVE_SYS_LOADAVG_H + # include <sys/loadavg.h> + #endif + #include <stdlib.h>]]) ])# gl_GETLOADAVG # gl_PREREQ_GETLOADAVG # -------------------- -# Set up the AC_LIBOBJ replacement of `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])]) + +AC_CHECK_HEADERS_ONCE([sys/param.h]) + +# 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 # 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 +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 -if test $gl_have_func = no; then +if test $gl_func_getloadavg_done = no; then AC_CHECK_HEADER([inq_stats/cpustats.h], - [gl_have_func=yes + [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 <inq_status/cpustats.h> instead of <sys/cpustats.h>.])]) fi -if test $gl_have_func = no; then +if test $gl_func_getloadavg_done = no; then AC_CHECK_HEADER([sys/cpustats.h], - [gl_have_func=yes; AC_DEFINE([UMAX])]) + [gl_func_getloadavg_done=yes; AC_DEFINE([UMAX])]) fi -if test $gl_have_func = no; then +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], - [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>]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]], [[struct nlist x; |