PR rtl-optimization/57003
[official-gcc.git] / libjava / shlibpath.m4
bloba86002cfcf9ecd7f0c2d86c9105025fc18d11fcb
1 # shlibpath.m4 - Define LTDL_SHLIBPATH_VAR. -*-Autoconf-*-
2 ## Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005, 2011
3 ## Free Software Foundation, Inc.
4 ## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
5 ##
6 ## This program is free software; you can redistribute it and/or modify
7 ## it under the terms of the GNU General Public License as published by
8 ## the Free Software Foundation; either version 2 of the License, or
9 ## (at your option) any later version.
11 ## This program is distributed in the hope that it will be useful, but
12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 ## General Public License for more details.
16 ## You should have received a copy of the GNU General Public License
17 ## along with this program; if not, write to the Free Software
18 ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 ## As a special exception to the GNU General Public License, if you
21 ## distribute this file as part of a program that contains a
22 ## configuration script generated by Autoconf, you may include it under
23 ## the same distribution terms that you use for the rest of that program.
25 # AC_LIBTOOL_SYS_DYNAMIC_LINKER
26 # -----------------------------
27 # PORTME Fill in your ld.so characteristics
28 AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER],
29 [AC_MSG_CHECKING([dynamic linker characteristics])
30 library_names_spec=
31 libname_spec='lib$name'
32 soname_spec=
33 shrext=".so"
34 postinstall_cmds=
35 postuninstall_cmds=
36 finish_cmds=
37 finish_eval=
38 shlibpath_var=
39 shlibpath_overrides_runpath=unknown
40 version_type=none
41 dynamic_linker="$host_os ld.so"
42 sys_lib_dlsearch_path_spec="/lib /usr/lib"
43 if test "$GCC" = yes; then
44   sys_lib_search_path_spec=`$CC -print-search-dirs | grep "^libraries:" | sed -e "s/^libraries://" -e "s,=/,/,g"`
45   if echo "$sys_lib_search_path_spec" | grep ';' >/dev/null ; then
46     # if the path contains ";" then we assume it to be the separator
47     # otherwise default to the standard path separator (i.e. ":") - it is
48     # assumed that no part of a normal pathname contains ";" but that should
49     # okay in the real world where ";" in dirpaths is itself problematic.
50     sys_lib_search_path_spec=`echo "$sys_lib_search_path_spec" | sed -e 's/;/ /g'`
51   else
52     sys_lib_search_path_spec=`echo "$sys_lib_search_path_spec" | sed -e "s/$PATH_SEPARATOR/ /g"`
53   fi
54 else
55   sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
57 need_lib_prefix=unknown
58 hardcode_into_libs=no
60 # when you set need_version to no, make sure it does not cause -set_version
61 # flags to be left without arguments
62 need_version=unknown
64 case $host_os in
65 aix3*)
66   version_type=linux
67   library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
68   shlibpath_var=LIBPATH
70   # AIX 3 has no versioning support, so we append a major version to the name.
71   soname_spec='${libname}${release}${shared_ext}$major'
72   ;;
74 aix[[4-9]]*)
75   version_type=linux
76   need_lib_prefix=no
77   need_version=no
78   hardcode_into_libs=yes
79   if test "$host_cpu" = ia64; then
80     # AIX 5 supports IA64
81     library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
82     shlibpath_var=LD_LIBRARY_PATH
83   else
84     # With GCC up to 2.95.x, collect2 would create an import file
85     # for dependence libraries.  The import file would start with
86     # the line `#! .'.  This would cause the generated library to
87     # depend on `.', always an invalid library.  This was fixed in
88     # development snapshots of GCC prior to 3.0.
89     case $host_os in
90       aix4 | aix4.[[01]] | aix4.[[01]].*)
91       if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
92            echo ' yes '
93            echo '#endif'; } | ${CC} -E - | grep yes > /dev/null; then
94         :
95       else
96         can_build_shared=no
97       fi
98       ;;
99     esac
100     # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
101     # soname into executable. Probably we can add versioning support to
102     # collect2, so additional links can be useful in future.
103     if test "$aix_use_runtimelinking" = yes; then
104       # If using run time linking (on AIX 4.2 or later) use lib<name>.so
105       # instead of lib<name>.a to let people know that these are not
106       # typical AIX shared libraries.
107       library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
108     else
109       # We preserve .a as extension for shared libraries through AIX4.2
110       # and later when we are not doing run time linking.
111       library_names_spec='${libname}${release}.a $libname.a'
112       soname_spec='${libname}${release}${shared_ext}$major'
113     fi
114     shlibpath_var=LIBPATH
115   fi
116   ;;
118 amigaos*)
119   library_names_spec='$libname.ixlibrary $libname.a'
120   # Create ${libname}_ixlibrary.a entries in /sys/libs.
121   finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$echo "X$lib" | $Xsed -e '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $rm /sys/libs/${libname}_ixlibrary.a; $show "(cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a)"; (cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a) || exit 1; done'
122   ;;
124 beos*)
125   library_names_spec='${libname}${shared_ext}'
126   dynamic_linker="$host_os ld.so"
127   shlibpath_var=LIBRARY_PATH
128   ;;
130 bsdi4*)
131   version_type=linux
132   need_version=no
133   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
134   soname_spec='${libname}${release}${shared_ext}$major'
135   finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
136   shlibpath_var=LD_LIBRARY_PATH
137   sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
138   sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
139   # the default ld.so.conf also contains /usr/contrib/lib and
140   # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
141   # libtool to hard-code these into programs
142   ;;
144 cygwin* | mingw* | pw32*)
145   version_type=windows
146   shrext=".dll"
147   need_version=no
148   need_lib_prefix=no
150   case $GCC,$host_os in
151   yes,cygwin* | yes,mingw* | yes,pw32*)
152     library_names_spec='$libname.dll.a'
153     # DLL is installed to $(libdir)/../bin by postinstall_cmds
154     postinstall_cmds='base_file=`basename \${file}`~
155       dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i;echo \$dlname'\''`~
156       dldir=$destdir/`dirname \$dlpath`~
157       test -d \$dldir || mkdir -p \$dldir~
158       $install_prog $dir/$dlname \$dldir/$dlname'
159     postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
160       dlpath=$dir/\$dldll~
161        $rm \$dlpath'
162     shlibpath_overrides_runpath=yes
164     case $host_os in
165     cygwin*)
166       # Cygwin DLLs use 'cyg' prefix rather than 'lib'
167       soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | sed -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
168       sys_lib_search_path_spec="/lib /lib/w32api /usr/lib /usr/local/lib"
169       ;;
170     mingw*)
171       # MinGW DLLs use traditional 'lib' prefix
172       soname_spec='${libname}`echo ${release} | sed -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
173       sys_lib_search_path_spec=`$CC -print-search-dirs | grep "^libraries:" | sed -e "s/^libraries://" -e "s,=/,/,g"`
174       if echo "$sys_lib_search_path_spec" | [grep ';[c-zC-Z]:/' >/dev/null]; then
175         # It is most probably a Windows format PATH printed by
176         # mingw gcc, but we are running on Cygwin. Gcc prints its search
177         # path with ; separators, and with drive letters. We can handle the
178         # drive letters (cygwin fileutils understands them), so leave them,
179         # especially as we might pass files found there to a mingw objdump,
180         # which wouldn't understand a cygwinified path. Ahh.
181         sys_lib_search_path_spec=`echo "$sys_lib_search_path_spec" | sed -e 's/;/ /g'`
182       else
183         sys_lib_search_path_spec=`echo "$sys_lib_search_path_spec" | sed -e "s/$PATH_SEPARATOR/ /g"`
184       fi
185       ;;
186     pw32*)
187       # pw32 DLLs use 'pw' prefix rather than 'lib'
188       library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | sed -e 's/[.]/-/g'`${versuffix}${shared_ext}'
189       ;;
190     esac
191     ;;
193   *)
194     library_names_spec='${libname}`echo ${release} | sed -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
195     ;;
196   esac
197   dynamic_linker='Win32 ld.exe'
198   # FIXME: first we should search . and the directory the executable is in
199   shlibpath_var=PATH
200   ;;
202 darwin* | rhapsody*)
203   dynamic_linker="$host_os dyld"
204   version_type=darwin
205   need_lib_prefix=no
206   need_version=no
207   # FIXME: Relying on posixy $() will cause problems for
208   #        cross-compilation, but unfortunately the echo tests do not
209   #        yet detect zsh echo's removal of \ escapes.
210   library_names_spec='${libname}${release}${versuffix}$shared_ext ${libname}${release}${major}$shared_ext ${libname}$shared_ext'
211   soname_spec='${libname}${release}${major}$shared_ext'
212   shlibpath_overrides_runpath=yes
213   shlibpath_var=DYLD_LIBRARY_PATH
214   shrext='$(test .$module = .yes && echo .so || echo .dylib)'
215   # Apple's gcc prints 'gcc -print-search-dirs' doesn't operate the same.
216   if $CC -v 2>&1 | grep 'Apple' >/dev/null ; then 
217   sys_lib_search_path_spec=`$CC -print-search-dirs | tr "\n" "$PATH_SEPARATOR" | sed -e 's/libraries:/@libraries:/' | tr "@" "\n" | grep "^libraries:" | sed -e "s/^libraries://" -e "s,=/,/,g" -e "s,$PATH_SEPARATOR, ,g" -e "s,.*,& /lib /usr/lib /usr/local/lib,g"`
218   fi
219   sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
220   ;;
222 dgux*)
223   version_type=linux
224   need_lib_prefix=no
225   need_version=no
226   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
227   soname_spec='${libname}${release}${shared_ext}$major'
228   shlibpath_var=LD_LIBRARY_PATH
229   ;;
231 freebsd*)
232   objformat=`test -x /usr/bin/objformat && /usr/bin/objformat || echo aout`
233   version_type=freebsd-$objformat
234   case $version_type in
235     freebsd-elf*)
236       library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
237       need_version=no
238       need_lib_prefix=no
239       ;;
240     freebsd-*)
241       library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
242       need_version=yes
243       ;;
244   esac
245   shlibpath_var=LD_LIBRARY_PATH
246   case $host_os in
247   freebsd2*)
248     shlibpath_overrides_runpath=yes
249     ;;
250   freebsd3.[01]* | freebsdelf3.[01]*)
251     shlibpath_overrides_runpath=yes
252     hardcode_into_libs=yes
253     ;;
254   *) # from 3.2 on
255     shlibpath_overrides_runpath=no
256     hardcode_into_libs=yes
257     ;;
258   esac
259   ;;
261 gnu*)
262   version_type=linux
263   need_lib_prefix=no
264   need_version=no
265   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
266   soname_spec='${libname}${release}${shared_ext}$major'
267   shlibpath_var=LD_LIBRARY_PATH
268   hardcode_into_libs=yes
269   ;;
271 hpux9* | hpux10* | hpux11*)
272   # Give a soname corresponding to the major version so that dld.sl refuses to
273   # link against other versions.
274   version_type=sunos
275   need_lib_prefix=no
276   need_version=no
277   case "$host_cpu" in
278   ia64*)
279     shrext='.so'
280     hardcode_into_libs=yes
281     dynamic_linker="$host_os dld.so"
282     shlibpath_var=LD_LIBRARY_PATH
283     shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
284     library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
285     soname_spec='${libname}${release}${shared_ext}$major'
286     if test "X$HPUX_IA64_MODE" = X32; then
287       sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
288     else
289       sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
290     fi
291     sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
292     ;;
293    hppa*64*)
294      shrext='.sl'
295      hardcode_into_libs=yes
296      dynamic_linker="$host_os dld.sl"
297      shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
298      shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
299      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
300      soname_spec='${libname}${release}${shared_ext}$major'
301      sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
302      sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
303      ;;
304    *)
305     shrext='.sl'
306     dynamic_linker="$host_os dld.sl"
307     shlibpath_var=SHLIB_PATH
308     shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
309     library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
310     soname_spec='${libname}${release}${shared_ext}$major'
311     ;;
312   esac
313   # HP-UX runs *really* slowly unless shared libraries are mode 555.
314   postinstall_cmds='chmod 555 $lib'
315   ;;
317 irix5* | irix6* | nonstopux*)
318   case $host_os in
319     nonstopux*) version_type=nonstopux ;;
320     *)
321         if test "$lt_cv_prog_gnu_ld" = yes; then
322                 version_type=linux
323         else
324                 version_type=irix
325         fi ;;
326   esac
327   need_lib_prefix=no
328   need_version=no
329   soname_spec='${libname}${release}${shared_ext}$major'
330   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
331   case $host_os in
332   irix5* | nonstopux*)
333     libsuff= shlibsuff=
334     ;;
335   *)
336     case $LD in # libtool.m4 will add one of these switches to LD
337     *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
338       libsuff= shlibsuff= libmagic=32-bit;;
339     *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
340       libsuff=32 shlibsuff=N32 libmagic=N32;;
341     *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
342       libsuff=64 shlibsuff=64 libmagic=64-bit;;
343     *) libsuff= shlibsuff= libmagic=never-match;;
344     esac
345     ;;
346   esac
347   shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
348   shlibpath_overrides_runpath=no
349   sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
350   sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
351   hardcode_into_libs=yes
352   ;;
354 # No shared lib support for Linux oldld, aout, or coff.
355 linux*oldld* | linux*aout* | linux*coff*)
356   dynamic_linker=no
357   ;;
359 # This must be Linux ELF.
360 linux*|k*bsd*-gnu)
361   version_type=linux
362   need_lib_prefix=no
363   need_version=no
364   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
365   soname_spec='${libname}${release}${shared_ext}$major'
366   finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
367   shlibpath_var=LD_LIBRARY_PATH
368   shlibpath_overrides_runpath=no
369   # This implies no fast_install, which is unacceptable.
370   # Some rework will be needed to allow for fast_install
371   # before this can be enabled.
372   hardcode_into_libs=yes
374   # We used to test for /lib/ld.so.1 and disable shared libraries on
375   # powerpc, because MkLinux only supported shared libraries with the
376   # GNU dynamic linker.  Since this was broken with cross compilers,
377   # most powerpc-linux boxes support dynamic linking these days and
378   # people can always --disable-shared, the test was removed, and we
379   # assume the GNU/Linux dynamic linker is in use.
380   dynamic_linker='GNU/Linux ld.so'
381   ;;
383 netbsd*)
384   version_type=sunos
385   need_lib_prefix=no
386   need_version=no
387   if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
388     library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
389     finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
390     dynamic_linker='NetBSD (a.out) ld.so'
391   else
392     library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} ${libname}${shared_ext}'
393     soname_spec='${libname}${release}${shared_ext}$major'
394     dynamic_linker='NetBSD ld.elf_so'
395   fi
396   shlibpath_var=LD_LIBRARY_PATH
397   shlibpath_overrides_runpath=yes
398   hardcode_into_libs=yes
399   ;;
401 newsos6)
402   version_type=linux
403   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
404   shlibpath_var=LD_LIBRARY_PATH
405   shlibpath_overrides_runpath=yes
406   ;;
408 nto-qnx)
409   version_type=linux
410   need_lib_prefix=no
411   need_version=no
412   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
413   soname_spec='${libname}${release}${shared_ext}$major'
414   shlibpath_var=LD_LIBRARY_PATH
415   shlibpath_overrides_runpath=yes
416   ;;
418 openbsd*)
419   version_type=sunos
420   need_lib_prefix=no
421   need_version=no
422   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
423   finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
424   shlibpath_var=LD_LIBRARY_PATH
425   if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
426     case $host_os in
427       openbsd2.[[89]] | openbsd2.[[89]].*)
428         shlibpath_overrides_runpath=no
429         ;;
430       *)
431         shlibpath_overrides_runpath=yes
432         ;;
433       esac
434   else
435     shlibpath_overrides_runpath=yes
436   fi
437   ;;
439 os2*)
440   libname_spec='$name'
441   shrext=".dll"
442   need_lib_prefix=no
443   library_names_spec='$libname${shared_ext} $libname.a'
444   dynamic_linker='OS/2 ld.exe'
445   shlibpath_var=LIBPATH
446   ;;
448 osf3* | osf4* | osf5*)
449   version_type=osf
450   need_lib_prefix=no
451   need_version=no
452   soname_spec='${libname}${release}${shared_ext}$major'
453   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
454   shlibpath_var=LD_LIBRARY_PATH
455   sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
456   sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
457   ;;
459 sco3.2v5*)
460   version_type=osf
461   soname_spec='${libname}${release}${shared_ext}$major'
462   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
463   shlibpath_var=LD_LIBRARY_PATH
464   ;;
466 solaris*)
467   version_type=linux
468   need_lib_prefix=no
469   need_version=no
470   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
471   soname_spec='${libname}${release}${shared_ext}$major'
472   shlibpath_var=LD_LIBRARY_PATH
473   shlibpath_overrides_runpath=yes
474   hardcode_into_libs=yes
475   # ldd complains unless libraries are executable
476   postinstall_cmds='chmod +x $lib'
477   ;;
479 sunos4*)
480   version_type=sunos
481   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
482   finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
483   shlibpath_var=LD_LIBRARY_PATH
484   shlibpath_overrides_runpath=yes
485   if test "$with_gnu_ld" = yes; then
486     need_lib_prefix=no
487   fi
488   need_version=yes
489   ;;
491 sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
492   version_type=linux
493   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
494   soname_spec='${libname}${release}${shared_ext}$major'
495   shlibpath_var=LD_LIBRARY_PATH
496   case $host_vendor in
497     sni)
498       shlibpath_overrides_runpath=no
499       need_lib_prefix=no
500       export_dynamic_flag_spec='${wl}-Blargedynsym'
501       runpath_var=LD_RUN_PATH
502       ;;
503     siemens)
504       need_lib_prefix=no
505       ;;
506     motorola)
507       need_lib_prefix=no
508       need_version=no
509       shlibpath_overrides_runpath=no
510       sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
511       ;;
512   esac
513   ;;
515 sysv4*MP*)
516   if test -d /usr/nec ;then
517     version_type=linux
518     library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
519     soname_spec='$libname${shared_ext}.$major'
520     shlibpath_var=LD_LIBRARY_PATH
521   fi
522   ;;
524 uts4*)
525   version_type=linux
526   library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
527   soname_spec='${libname}${release}${shared_ext}$major'
528   shlibpath_var=LD_LIBRARY_PATH
529   ;;
532   dynamic_linker=no
533   ;;
534 esac
535 AC_MSG_RESULT([$dynamic_linker])
536 test "$dynamic_linker" = no && can_build_shared=no
537 ])# AC_LIBTOOL_SYS_DYNAMIC_LINKER
539 # AC_LTDL_SHLIBPATH
540 # -----------------
541 AC_DEFUN([AC_LTDL_SHLIBPATH],
542 [AC_REQUIRE([AC_LIBTOOL_SYS_DYNAMIC_LINKER])
543 AC_CACHE_CHECK([which variable specifies run-time library path],
544   [libltdl_cv_shlibpath_var], [libltdl_cv_shlibpath_var="$shlibpath_var"])
545 if test -n "$libltdl_cv_shlibpath_var"; then
546   AC_DEFINE_UNQUOTED(LTDL_SHLIBPATH_VAR, "$libltdl_cv_shlibpath_var",
547     [Define to the name of the environment variable that determines the dynamic library search path.])
549 ])# AC_LTDL_SHLIBPATH