buildlib/tools.m4

   1 AC_DEFUN(ah_HAVE_GETCONF,
   2         [AC_ARG_WITH(getconf,
   3                 [  --with-getconf          Enable automagical buildtime configuration],
   4                 [if test "$withval" = "yes"; then
   5                         AC_PATH_PROG(GETCONF, getconf)
   6                 elif test ! "$withval" = "no";then
   7                         AC_MSG_CHECKING([getconf])
   8                         AC_MSG_RESULT([$withval])
   9                         GETCONF=$withval
  10                 fi],
  11                 [AC_PATH_PROG(GETCONF, getconf)]
  12         )
  13         AC_SUBST(GETCONF)
  14 ])
  15
  16 dnl ah_GET_CONF(variable, value ..., [default])
  17 AC_DEFUN(ah_GET_GETCONF,
  18         [AC_REQUIRE([ah_HAVE_GETCONF])
  19         if test ! -z "$GETCONF";then
  20                 old_args="[$]@"
  21                 set -- $2
  22                 while eval test -z \"\$$1\" -a ! -z \"[$]1\";do
  23                         eval $1=`$GETCONF "[$]1" 2>/dev/null`
  24                         shift
  25                 done
  26         fi
  27         if eval test -z \"\$$1\" -o \"\$$1\" = "-1";then
  28                 eval $1="$3"
  29         fi
  30 ])
  31 AC_DEFUN(ah_NUM_CPUS,
  32         [AC_MSG_CHECKING([number of cpus])
  33         AC_ARG_WITH(cpus,
  34                 [  --with-cpus             The number of cpus to be used for building(see --with-procs, default 1)],
  35                 [
  36                 if test "$withval" = "yes"; then
  37                         ah_GET_GETCONF(NUM_CPUS, SC_NPROCESSORS_ONLN _NPROCESSORS_ONLN, 1)
  38                 elif test ! "$withval" = "no";then
  39                         NUM_CPUS=$withval
  40                 elif test "$withval" = "no";then
  41                         NUM_CPUS=1
  42                 fi],
  43                 [ah_GET_GETCONF(NUM_CPUS, SC_NPROCESSORS_ONLN _NPROCESSORS_ONLN, 1)]
  44         )
  45         ah_NUM_CPUS_msg="$NUM_CPUS"
  46         if test "$NUM_CPUS" = "0"; then
  47                 # broken getconf, time to bitch.
  48                 ah_NUM_CPUS_msg="found 0 cpus.  Has someone done a lobotomy?"
  49                 NUM_CPUS=1
  50         fi
  51         if test $NUM_CPUS = 1 ;then
  52                 default_PROC_MULTIPLY=1
  53         else
  54                 default_PROC_MULTIPLY=2
  55         fi
  56         AC_MSG_RESULT([$ah_NUM_CPUS_msg])
  57         AC_SUBST(NUM_CPUS)
  58 ])
  59 AC_DEFUN(ah_PROC_MULTIPLY,
  60         [AC_REQUIRE([ah_NUM_CPUS])
  61         AC_MSG_CHECKING([processor multiplier])
  62         AC_ARG_WITH(proc-multiply,
  63                 [  --with-proc-multiply    Multiply this * number of cpus for parallel making(default 2).],
  64                 [if test "$withval" = "yes"; then
  65                         PROC_MULTIPLY=$default_PROC_MULTIPLY
  66                 elif test ! "$withval" = "no";then
  67                         PROC_MULTIPLY=$withval
  68                 fi],
  69                 [PROC_MULTIPLY=$default_PROC_MULTIPLY]
  70         )
  71         AC_MSG_RESULT([$PROC_MULTIPLY])
  72         AC_SUBST(PROC_MULTIPLY)
  73 ])
  74
  75 AC_DEFUN(ah_NUM_PROCS,
  76         [AC_REQUIRE([ah_PROC_MULTIPLY])
  77         AC_REQUIRE([ah_NUM_CPUS])
  78         AC_MSG_CHECKING([number of processes to run during make])
  79         AC_ARG_WITH(procs,
  80                 [  --with-procs            The number of processes to run in parallel during make(num_cpus * multiplier).],
  81                 [if test "$withval" = "yes"; then
  82                         NUM_PROCS=`expr $NUM_CPUS \* $PROC_MULTIPLY`
  83                 elif test ! "$withval" = "no";then
  84                         NUM_PROCS=$withval
  85                 fi],
  86                 [NUM_PROCS=`expr $NUM_CPUS \* $PROC_MULTIPLY`]
  87         )
  88         AC_MSG_RESULT([$NUM_PROCS])
  89         AC_SUBST(NUM_PROCS)
  90 ])