ext/util/extliblist

   1 case $CONFIG in
   2 '')
   3         if test -f config.sh; then TOP=.;
   4         elif test -f ../config.sh; then TOP=..;
   5         elif test -f ../../config.sh; then TOP=../..;
   6         elif test -f ../../../config.sh; then TOP=../../..;
   7         elif test -f ../../../../config.sh; then TOP=../../../..;
   8         else
   9                 echo "Can't find config.sh."; exit 1
  10         fi
  11         . $TOP/config.sh
  12         ;;
  13 esac
  14 : extliblist
  15 :
  16 : Author:  Andy Dougherty    doughera@lafcol.lafayette.edu
  17 :
  18 : This utility takes a list of libraries in the form
  19 : -llib1 -llib2 -llib3
  20 : and prints out lines suitable for inclusion in an extension
  21 : Makefile.
  22 : Extra library paths may be included with the form -L/another/path
  23 : this will affect the searches for all subsequent libraries.
  24 :
  25 : It is intended to be "dotted" from within an extension Makefile.SH.
  26 : see ext/POSIX/Makefile.SH for an example.
  27 : Prior to calling this, the variable potential_libs should be set
  28 : to the potential list of libraries
  29 :
  30 : It sets the following
  31 : extralibs = full list of libraries needed for static linking.
  32 :               Only those libraries that actually exist are included.
  33 : dynaloadlibs = full path names of those libraries that are needed
  34 :               but can be linked in dynamically on this platform.  On
  35 :               SunOS, for example, this would be .so* libraries,
  36 :               but not archive libraries.
  37 :               Eventually, this list can be used to write a bootstrap file.
  38 : statloadlibs = list of those libraries which must be statically
  39 :               linked into the shared library.  On SunOS 4.1.3,
  40 :               for example,  I have only an archive version of
  41 :               -lm, and it must be linked in statically.
  42 :
  43 :  This script uses config.sh variables libs, libpth, and so.  It is mostly
  44 :  taken from the metaconfig libs.U unit.
  45 extralibs=''
  46 dynaloadlibs=''
  47 statloadlibs=''
  48 Llibpth=''
  49 for thislib in `echo "XXX $potential_libs " | $sed 's/ -l/ /g'` ; do
  50         case "$thislib" in
  51         XXX)
  52                 : Handle case where potential_libs is empty.
  53                 ;;
  54         -L*)
  55                 : Handle possible linker path arguments.
  56                 newpath=`echo $thislib | $sed 's/^-L//'`
  57                 if $test -d $newpath; then
  58                         Llibpth="$Llibpth $newpath"
  59                         extralibs="$extralibs $thislib"
  60                         statloadlibs="$statloadlibs $thislib"
  61                 fi
  62                 ;;
  63         *)
  64                 : Handle possible library arguments.
  65                 for thispth in $Llibpth $libpth; do
  66                         : Loop over possible wildcards and take the last one.
  67                         for fullname in $thispth/lib$thislib.$so.[0-9]* ; do
  68                                 :
  69                         done
  70                         if $test -f $fullname; then
  71                                 break
  72                         elif fullname=$thispth/lib$thislib.$so && $test -f $fullname; then
  73                                 break
  74                         elif fullname=$thispth/lib${thislib}_s.a && $test -f $fullname; then
  75                                 thislib=${thislib}_s
  76                                 break
  77                         elif fullname=$thispth/lib${thislib}.a && $test -f $fullname; then
  78                                 break
  79                         elif fullname=$thispth/Slib${thislib}.a && $test -f $fullname; then
  80                                 break
  81                         else
  82                                 fullname=''
  83                         fi
  84                 done
  85                 : Now update library lists
  86                 case "$fullname" in
  87                 '')
  88                         : Skip nonexistent files
  89                         ;;
  90                 *)
  91                         : Do not add it into the extralibs if it is already linked in
  92                         : with the main perl executable.
  93                         case " $libs " in
  94                         *" -l$thislib "*|*" -l${thislib}_s "*) ;;
  95                         *)      extralibs="$extralibs -l$thislib" ;;
  96                         esac
  97                         :
  98                         : For NeXT and DLD, put files into DYNALOADLIBS to be
  99                         : converted into a boostrap file.  For other systems,
 100                         : we will use ld with what I have misnamed STATLOADLIBS
 101                         : to assemble the shared object.
 102                         case "$dlsrc" in
 103                         dl_dld*|dl_next*)
 104                                 dynaloadlibs="$dynaloadlibs $fullname"   ;;
 105                         *)
 106                                 case "$fullname" in
 107                                 *.a)
 108                                         statloadlibs="$statloadlibs -l$thislib"
 109                                         ;;
 110                                 *)
 111                                         : For SunOS4, do not add in this shared library
 112                                         : if it is already linked in the main
 113                                         : perl executable
 114                                         case "$osname" in
 115                                         sunos)
 116                                                 case " $libs " in
 117                                                 *" -l$thislib "*) ;;
 118                                                 *)      statloadlibs="$statloadlibs -l$thislib" ;;
 119                                                 esac
 120                                                 ;;
 121                                         *)
 122                                                 statloadlibs="$statloadlibs -l$thislib"
 123                                                 ;;
 124                                         esac
 125                                         ;;
 126                                 esac
 127                                 ;;
 128                         esac
 129                         ;;
 130                 esac
 131                 ;;
 132         esac
 133 done
 134
 135 case "$dlsrc" in
 136 dl_next*)
 137         extralibs=`echo " $extralibs "| $sed -e 's/ -lm / /'` ;;
 138 esac
 139
 140 set X $extralibs
 141 shift
 142 extralibs="$*"
 143
 144 set X $dynaloadlibs
 145 shift
 146 dynaloadlibs="$*"
 147
 148 set X $statloadlibs
 149 shift
 150 statloadlibs="$*"
 151