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 ])
  91
  92 AC_DEFUN(ah_GLIBC_VER,
  93         [AC_MSG_CHECKING([glibc version])
  94         dummy=if$$
  95         cat <<_GLIBC_>$dummy.c
  96 #include <features.h>
  97 #include <stdio.h>
  98 #include <stdlib.h>
  99 int main(int argc, char **argv) { printf("libc6.%d",__GLIBC_MINOR__); exit(0); }
 100 _GLIBC_
 101         ${CC-cc} $dummy.c -o $dummy > /dev/null 2>&1
 102         if test "$?" = 0; then
 103                 GLIBC_VER=`./$dummy`
 104                 AC_MSG_RESULT([$GLIBC_VER])
 105                 GLIBC_VER="-$GLIBC_VER"
 106         else
 107                 AC_MSG_WARN([cannot determine GNU C library minor version number])
 108         fi
 109         rm -f $dummy $dummy.c
 110         AC_SUBST(GLIBC_VER)
 111 ])
 112
 113 AC_DEFUN(ah_LIBSTDCPP_VER,
 114         [AC_MSG_CHECKING([libstdc++ version])
 115         dummy=if$$
 116         cat <<_LIBSTDCPP_>$dummy.cc
 117 #include <features.h>
 118 #include <stdio.h>
 119 #include <stdlib.h>
 120 int main(int argc, char **argv) { exit(0); }
 121 _LIBSTDCPP_
 122         ${CXX-c++} $dummy.cc -o $dummy > /dev/null 2>&1
 123
 124         if test "$?" = 0; then
 125                 soname=`objdump -p ./$dummy |grep NEEDED|grep libstd`
 126                 LIBSTDCPP_VER=`echo $soname | sed -e 's/.*NEEDED.*libstdc++\(-libc.*\(-.*\)\)\?.so.\(.*\)/\3\2/'`
 127         fi
 128         rm -f $dummy $dummy.cc
 129
 130         if test -z "$LIBSTDCPP_VER"; then
 131                 AC_MSG_WARN([cannot determine standard C++ library version number])
 132         else
 133                 AC_MSG_RESULT([$LIBSTDCPP_VER])
 134                 LIBSTDCPP_VER="-$LIBSTDCPP_VER"
 135         fi
 136         AC_SUBST(LIBSTDCPP_VER)
 137 ])
 138
 139 AC_DEFUN(ah_GCC3DEP,[
 140         AC_MSG_CHECKING(if $CXX -MD works)
 141         touch gcc3dep.cc
 142         ${CXX-c++} -MD -o gcc3dep_test.o -c gcc3dep.cc
 143         rm -f gcc3dep.cc gcc3dep_test.o
 144         if test -e gcc3dep.d; then
 145                 rm -f gcc3dep.d
 146                 GCC_MD=input
 147                 GCC3DEP=no
 148         elif test -e gcc3dep_test.d; then
 149                 rm -f gcc3dep_test.d
 150                 GCC_MD=output
 151                 GCC3DEP=yes
 152         else
 153                 AC_MSG_ERROR(no)
 154         fi
 155         AC_MSG_RESULT([yes, for $GCC_MD])
 156         AC_SUBST(GCC3DEP)
 157 ])