X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetloadavg.m4;h=8243729197ccd8d95b6433745a93629f2fe84b3f;hb=1d4024b4187e22048a33e5baf953183fc2dedeb3;hp=86d5ca288e49e625d5b0c6f984adfaa86e41383b;hpb=b6bc93c0a0992487f3dd7f957ee8b7f259dc7f5a;p=gnulib.git diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4 index 86d5ca288..824372919 100644 --- a/m4/getloadavg.m4 +++ b/m4/getloadavg.m4 @@ -1,127 +1,155 @@ -#serial 3 +# Check for getloadavg. -AC_DEFUN(AM_FUNC_GETLOADAVG, -[ac_have_func=no # yes means we've found a way to get the load average. +# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, +# 2006 Free Software Foundation, Inc. -am_cv_saved_LIBS="$LIBS" +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent. +# New applications should use gl_GETLOADAVG instead. + +# gl_GETLOADAVG(LIBOBJDIR) +# ------------------------ +AC_DEFUN([gl_GETLOADAVG], +[gl_have_func=no # yes means we've found a way to get the load average. + +# Make sure getloadavg.c is where it belongs, at configure-time. +test -f "$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) -if test $ac_cv_lib_kstat_kstat_open = yes ; then ac_have_func=yes ; fi +test $ac_cv_lib_kstat_kstat_open = 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. -AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS") -if test $ac_have_func = no; then +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" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes]) + [LIBS="-lutil $LIBS" gl_have_func=yes gl_cv_func_getloadavg_setgid=yes]) fi -if test $ac_have_func = no; then +if test $gl_have_func = no; then # There is a commonly available library for RS/6000 AIX. # Since it is not a standard part of AIX, it might be installed locally. - ac_save_LIBS="$LIBS" + gl_getloadavg_LIBS=$LIBS LIBS="-L/usr/local/lib $LIBS" AC_CHECK_LIB(getloadavg, getloadavg, - LIBS="-lgetloadavg $LIBS", LIBS="$ac_save_LIBS") + [LIBS="-lgetloadavg $LIBS"], [LIBS=$gl_getloadavg_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, 1, [Define if using getloadavg.c.]) - # 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 $ac_cv_struct_nlist_n_un = yes; then - AC_DEFINE(NLIST_NAME_UNION) - fi - ])dnl -fi # Do not have getloadavg in system libraries. +# Make sure it is really in the library, if we think we found it, +# otherwise set up the replacement function. +AC_CHECK_FUNCS(getloadavg, [], + [gl_PREREQ_GETLOADAVG]) # Some definitions of getloadavg require that the program be installed setgid. -dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory. AC_CACHE_CHECK(whether getloadavg requires setgid, - ac_cv_func_getloadavg_setgid, + gl_cv_func_getloadavg_setgid, [AC_EGREP_CPP([Yowza Am I SETGID yet], -[#include "$srcdir/lib/getloadavg.c" +[#define CONFIGURING_GETLOADAVG +#include "$srcdir/$1/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) +#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 $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. +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` - 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 + 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, $gl_cv_group_kmem)dnl fi -AC_SUBST(KMEM_GROUP)dnl - -if test x = "x$am_cv_saved_LIBS"; then - GETLOADAVG_LIBS="$LIBS" +if test "x$gl_save_LIBS" = x; then + GETLOADAVG_LIBS=$LIBS else - GETLOADAVG_LIBS=`echo "$LIBS"|sed "s!$am_cv_saved_LIBS!!"` + GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$gl_save_LIBS!!"` fi +LIBS=$gl_save_LIBS + AC_SUBST(GETLOADAVG_LIBS)dnl -LIBS="$am_cv_saved_LIBS" -]) +])# gl_GETLOADAVG + + +# gl_PREREQ_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 .]) + 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 $gl_have_func = no && test "$ac_cv_lib_elf_elf_begin" = yes; then + gl_have_func=yes + AC_DEFINE(SVR4, 1, [Define to 1 on System V Release 4.]) +fi + +if test $gl_have_func = no; then + AC_CHECK_HEADER(inq_stats/cpustats.h, + [gl_have_func=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_have_func = no; then + AC_CHECK_HEADER(sys/cpustats.h, + [gl_have_func=yes; AC_DEFINE(UMAX)]) +fi + +if test $gl_have_func = 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 ]) +])dnl +])# gl_PREREQ_GETLOADAVG