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?RCS: $Id: dlsrc.U,v$
?RCS:
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: dlsrc.U,v $
?RCS:
?X: hpux support thanks to Jeff Okamoto <okamoto@hpcc101.corp.hp.com>
?X:
?X: To create a shared library, you must compile ALL source files in the
?X: library with +z (or possibly +Z if the library is whopping huge),
?X: then link the library with -b. Example:
?X: cc -c +z module_a.c
?X: cc -c +z module_b.c
?X: ld -b module_a.o module_b.o -o module.sl
?X:
?MAKE:usedl dlsrc cccdlflags lddlflags ccdlflags d_shrplib shrpdir: \
Getfile Myread test osname sed i_dld d_dlopen Findhdr Setvar \
cc ldflags cat archlib
?MAKE: -pick add $@ %<
?S:usedl:
?S: This variable indicates if the the system supports dynamic
?S: loading of some sort. See also dlsrc and dlobj.
?S:.
?S:dlsrc:
?S: This variable contains the name of the dynamic loading file that
?S: will be used with the package.
?S:.
?S:cccdlflags:
?S: This variable contains any special flags that might need to be
?S: passed with cc -c to compile modules to be used to create a shared
?S: library that will be used for dynamic loading. For hpux, this
?S: should be +z. It is up to the makefile to use it.
?S:.
?S:lddlflags:
?S: This variable contains any special flags that might need to be
?S: passed to ld to create a shared library suitable for dynamic
?S: loading. It is up to the makefile to use it. For hpux, it
?S: should be -b. For sunos 4.1, it is empty.
?S:.
?S:ccdlflags:
?S: This variable contains any special flags that might need to be
?S: passed to cc to link with a shared library for dynamic loading.
?S: It is up to the makefile to use it. For sunos 4.1, it should
?S: be empty.
?S:.
?S:d_shrplib:
?S: This variable indicates whether libperl should be made as a
?S: shared library. This must be true for dynamic loading to
?S: work on (some) System V Release 4 systems.
?S:.
?S:shrpdir:
?S: This variable contains the directory where the libperl shared
?S: library will be installed. LD_RUN_PATH is set to this when
?S: linking with libperl (unless it is /usr/lib, the default).
?S:.
?C:USE_DYNAMIC_LOADING ~ %<:
?C: This symbol, if defined, indicates that dynamic loading of
?C: some sort is available.
?C:.
?H:?%<:#$usedl USE_DYNAMIC_LOADING /**/
?H:.
?W:%<:dlopen
?LINT: set d_shrplib shrpdir
?T:dldir
: determine which dynamic loading, if any, to compile in
echo " "
dldir="ext/DynaLoader"
case "$usedl" in
$define|y|true)
dflt='y'
usedl="$define"
;;
$undef|n|false)
dflt='n'
usedl="$undef"
;;
*)
dflt='n'
case "$d_dlopen" in
$define) dflt='y' ;;
esac
case "$i_dld" in
$define) dflt='y' ;;
esac
: Does a dl_xxx.xs file exist for this operating system
$test -f ../$dldir/dl_${osname}.xs && dflt='y'
;;
esac
rp="Do you wish to use dynamic loading?"
. ./myread
usedl="$ans"
case "$ans" in
y*) usedl="$define"
case "$dlsrc" in
'')
if $test -f ../$dldir/dl_${osname}.xs ; then
dflt="$dldir/dl_${osname}.xs"
elif $test "$d_dlopen" = "$define" ; then
dflt="$dldir/dl_dlopen.xs"
elif $test "$i_dld" = "$define" ; then
dflt="$dldir/dl_dld.xs"
else
dflt=''
fi
;;
*) dflt="$dldir/$dlsrc"
;;
esac
echo "The following dynamic loading files are available:"
: Can not go over to $dldir because getfile has path hard-coded in.
cd ..; ls -C $dldir/dl*.xs; cd UU
rp="Source file to use for dynamic loading"
fn="fne"
. ./getfile
usedl="$define"
: emulate basename
dlsrc=`echo $ans | $sed -e 's@.*/\([^/]*\)$@\1@'`
$cat << EOM
Some systems may require passing special flags to $cc -c to
compile modules that will be used to create a shared library.
To use no flags, say "none".
EOM
case "$cccdlflags" in
''|' ') case "$cc" in
*gcc*) dflt='-fpic' ;;
*) case "$osname" in
hpux) dflt='+z' ;;
next) dflt='none' ;;
solaris) dflt='-K pic' ;;
sunos) dflt='-pic' ;;
svr4*|esix*) dflt='-Kpic' ;;
*) dflt='none' ;;
esac ;;
esac ;;
*) dflt="$cccdlflags" ;;
esac
rp="Any special flags to pass to $cc -c to compile shared library modules?"
. ./myread
case "$ans" in
none) cccdlflags='' ;;
*) cccdlflags="$ans" ;;
esac
cat << 'EOM'
Some systems may require passing special flags to ld to create a
library that can be dynamically loaded. If your ld flags include
-L/other/path options to locate libraries outside your loader's normal
search path, you may need to specify those -L options here as well. To
use no flags, say "none".
EOM
?X: I have received one report that NeXT requires -r here.
?X: On SunOS 4.1.3, that makes the library no longer shared.
?X: This stuff probably all belongs in hints files anyway.
case "$lddlflags" in
''|' ') case "$osname" in
hpux) dflt='-b' ;;
next) dflt='none' ;;
solaris) dflt='-G' ;;
sunos) dflt='-assert nodefinitions' ;;
svr4*|esix*) dflt="-G $ldflags" ;;
*) dflt='none' ;;
esac
;;
*) dflt="$lddlflags" ;;
esac
rp="Any special flags to pass to ld to create a dynamically loaded library?"
. ./myread
case "$ans" in
none) lddlflags='' ;;
*) lddlflags="$ans" ;;
esac
cat <<EOM
Some systems may require passing special flags to $cc to indicate that
the resulting executable will use dynamic linking. To use no flags,
say "none".
EOM
case "$ccdlflags" in
''|' ') case "$osname" in
hpux) dflt='none' ;;
next) dflt='none' ;;
sunos) dflt='none' ;;
*) dflt='none' ;;
esac ;;
*) dflt="$ccdlflags" ;;
esac
rp="Any special flags to pass to $cc to use dynamic loading?"
. ./myread
case "$ans" in
none) ccdlflags='' ;;
*) ccdlflags="$ans" ;;
esac
;;
?X: End of usedl=y section
*) usedl="$undef"
dlsrc='dl_none.xs'
lddlflags=''
ccdlflags=''
;;
esac
?X: Currently libperl is only created as a shared library if
?X: using dynamic loading on a SysVR4 system. Feel free to
?X: add prompts here to allow the user to choose a shared
?X: libperl in other cases.
val="$undef"
case "$osname" in
esix*|svr4*)
case "$usedl" in
$define)
$cat <<EOM
System V Release 4 systems can support dynamic loading
only if libperl is created as a shared library.
EOM
val="$define"
;;
esac ;;
esac
set d_shrplib; eval $setvar
case "$d_shrplib" in
$define)
cat <<EOM >&4
Be sure to add the perl source directory to the LD_LIBRARY_PATH
environment variable before running make:
LD_LIBRARY_PATH=`cd ..;pwd`; export LD_LIBRARY_PATH
or
setenv LD_LIBRARY_PATH `cd ..;pwd`
EOM
;;
esac
case "$d_shrplib" in
$define)
case "$shrpdir" in
"") dflt="$archlib/CORE";;
*) dflt="$shrpdir";;
esac
rp="What directory should we install the shared libperl into?"
fn="d~"
. ./getfile
shrpdir="$ans"
;;
*) shrpdir='none'
;;
esac
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