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perl 5.003_03: ext/util/make_ext
[perl5.git] / 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 was only used by the old Makefile.SH extension
19 : mechanism.  It is now obsolete and may be removed in a future
20 : release.
21 :
22 : This utility takes a list of libraries in the form
23 : -llib1 -llib2 -llib3
24 : and prints out lines suitable for inclusion in an extension
25 : Makefile.  
26 : Extra library paths may be included with the form -L/another/path
27 : this will affect the searches for all subsequent libraries.
28 :
29 : It is intended to be "dotted" from within an extension Makefile.SH.
30 : see ext/POSIX/Makefile.SH for an example.
31 : Prior to calling this, the variable potential_libs should be set 
32 : to the potential list of libraries
33 :
34 : It sets the following
35 : extralibs = full list of libraries needed for static linking.
36 :               Only those libraries that actually exist are included.
37 : dynaloadlibs = full path names of those libraries that are needed 
38 :               but can be linked in dynamically on this platform.  On 
39 :               SunOS, for example, this would be .so* libraries, 
40 :               but not archive libraries.
41 :               Eventually, this list can be used to write a bootstrap file.
42 : statloadlibs = list of those libraries which must be statically
43 :               linked into the shared library.  On SunOS 4.1.3, 
44 :               for example,  I have only an archive version of
45 :               -lm, and it must be linked in statically.
46 :
47 :  This script uses config.sh variables libs, libpth, and so.  It is mostly
48 :  taken from the metaconfig libs.U unit.
49 extralibs=''
50 dynaloadlibs=''
51 statloadlibs=''
52 Llibpth=''
53 for thislib in `echo "XXX $potential_libs " | $sed 's/ -l/ /g'` ; do
54         case "$thislib" in
55         XXX)
56                 : Handle case where potential_libs is empty.
57                 ;;
58         -L*)
59                 : Handle possible linker path arguments.
60                 newpath=`echo $thislib | $sed 's/^-L//'`
61                 if $test -d $newpath; then
62                         Llibpth="$Llibpth $newpath"
63                         extralibs="$extralibs $thislib"
64                         statloadlibs="$statloadlibs $thislib"
65                 fi
66                 ;;
67         *)
68                 : Handle possible library arguments.
69                 for thispth in $Llibpth $libpth; do
70                         : Loop over possible wildcards and take the last one.
71                         for fullname in $thispth/lib$thislib.$so.[0-9]* ; do
72                                 :
73                         done
74                         if $test -f $fullname; then
75                                 break
76                         elif fullname=$thispth/lib$thislib.$so && $test -f $fullname; then
77                                 break
78                         elif fullname=$thispth/lib${thislib}_s.a && $test -f $fullname; then
79                                 thislib=${thislib}_s
80                                 break
81                         elif fullname=$thispth/lib${thislib}.a && $test -f $fullname; then
82                                 break
83                         elif fullname=$thispth/Slib${thislib}.a && $test -f $fullname; then
84                                 break
85                         else
86                                 fullname=''
87                         fi
88                 done
89                 : Now update library lists
90                 case "$fullname" in
91                 '') 
92                         : Skip nonexistent files
93                         ;;
94                 *)
95                         : Do not add it into the extralibs if it is already linked in
96                         : with the main perl executable.
97                         case " $libs " in
98                         *" -l$thislib "*|*" -l${thislib}_s "*) ;;
99                         *)      extralibs="$extralibs -l$thislib" ;;
100                         esac
101                         :
102                         : For NeXT and DLD, put files into DYNALOADLIBS to be
103                         : converted into a boostrap file.  For other systems,
104                         : we will use ld with what I have misnamed STATLOADLIBS
105                         : to assemble the shared object.
106                         case "$dlsrc" in
107                         dl_dld*|dl_next*)
108                                 dynaloadlibs="$dynaloadlibs $fullname"   ;;
109                         *)
110                                 case "$fullname" in
111                                 *.a)
112                                         statloadlibs="$statloadlibs -l$thislib" 
113                                         ;;
114                                 *)   
115                                         : For SunOS4, do not add in this shared library
116                                         : if it is already linked in the main
117                                         : perl executable
118                                         case "$osname" in
119                                         sunos)
120                                                 case " $libs " in
121                                                 *" -l$thislib "*) ;;
122                                                 *)      statloadlibs="$statloadlibs -l$thislib" ;;
123                                                 esac
124                                                 ;;
125                                         *)
126                                                 statloadlibs="$statloadlibs -l$thislib" 
127                                                 ;;
128                                         esac
129                                         ;;
130                                 esac
131                                 ;;
132                         esac
133                         ;;
134                 esac
135                 ;;
136         esac
137 done
138
139 case "$dlsrc" in
140 dl_next*)
141         extralibs=`echo " $extralibs "| $sed -e 's/ -lm / /'` ;;
142 esac
143
144 set X $extralibs
145 shift
146 extralibs="$*"
147
148 set X $dynaloadlibs
149 shift
150 dynaloadlibs="$*"
151
152 set X $statloadlibs
153 shift
154 statloadlibs="$*"
155