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Revision 1084 - (show annotations)
Sat Mar 13 23:24:10 2010 UTC (11 years, 6 months ago) by michael
File size: 26585 byte(s)
- libtoolize

1 # ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
2 #
3 # Copyright (C) 1999-2006, 2007, 2008 Free Software Foundation, Inc.
4 # Written by Thomas Tanner, 1999
5 #
6 # This file is free software; the Free Software Foundation gives
7 # unlimited permission to copy and/or distribute it, with or without
8 # modifications, as long as this notice is preserved.
9
10 # serial 17 LTDL_INIT
11
12 # LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
13 # ------------------------------------------
14 # DIRECTORY contains the libltdl sources. It is okay to call this
15 # function multiple times, as long as the same DIRECTORY is always given.
16 AC_DEFUN([LT_CONFIG_LTDL_DIR],
17 [AC_BEFORE([$0], [LTDL_INIT])
18 _$0($*)
19 ])# LT_CONFIG_LTDL_DIR
20
21 # We break this out into a separate macro, so that we can call it safely
22 # internally without being caught accidentally by the sed scan in libtoolize.
23 m4_defun([_LT_CONFIG_LTDL_DIR],
24 [dnl remove trailing slashes
25 m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
26 m4_case(_LTDL_DIR,
27 [], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.'
28 m4_if(_ARG_DIR, [.],
29 [],
30 [m4_define([_LTDL_DIR], _ARG_DIR)
31 _LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
32 [m4_if(_ARG_DIR, _LTDL_DIR,
33 [],
34 [m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])])
35 m4_popdef([_ARG_DIR])
36 ])# _LT_CONFIG_LTDL_DIR
37
38 # Initialise:
39 m4_define([_LTDL_DIR], [])
40
41
42 # _LT_BUILD_PREFIX
43 # ----------------
44 # If Autoconf is new enough, expand to `${top_build_prefix}', otherwise
45 # to `${top_builddir}/'.
46 m4_define([_LT_BUILD_PREFIX],
47 [m4_ifdef([AC_AUTOCONF_VERSION],
48 [m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
49 [-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
50 [${top_build_prefix}],
51 [${top_builddir}/])],
52 [${top_build_prefix}])],
53 [${top_builddir}/])[]dnl
54 ])
55
56
57 # LTDL_CONVENIENCE
58 # ----------------
59 # sets LIBLTDL to the link flags for the libltdl convenience library and
60 # LTDLINCL to the include flags for the libltdl header and adds
61 # --enable-ltdl-convenience to the configure arguments. Note that
62 # AC_CONFIG_SUBDIRS is not called here. LIBLTDL will be prefixed with
63 # '${top_build_prefix}' if available, otherwise with '${top_builddir}/',
64 # and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single
65 # quotes!). If your package is not flat and you're not using automake,
66 # define top_build_prefix, top_builddir, and top_srcdir appropriately
67 # in your Makefiles.
68 AC_DEFUN([LTDL_CONVENIENCE],
69 [AC_BEFORE([$0], [LTDL_INIT])dnl
70 dnl Although the argument is deprecated and no longer documented,
71 dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
72 dnl here make sure it is the same as any other declaration of libltdl's
73 dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
74 dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
75 m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
76 _$0()
77 ])# LTDL_CONVENIENCE
78
79 # AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools,
80 # now we have LT_CONFIG_LTDL_DIR:
81 AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
82 [_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
83 _LTDL_CONVENIENCE])
84
85 dnl aclocal-1.4 backwards compatibility:
86 dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])
87
88
89 # _LTDL_CONVENIENCE
90 # -----------------
91 # Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
92 m4_defun([_LTDL_CONVENIENCE],
93 [case $enable_ltdl_convenience in
94 no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
95 "") enable_ltdl_convenience=yes
96 ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
97 esac
98 LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
99 LTDLDEPS=$LIBLTDL
100 LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
101
102 AC_SUBST([LIBLTDL])
103 AC_SUBST([LTDLDEPS])
104 AC_SUBST([LTDLINCL])
105
106 # For backwards non-gettext consistent compatibility...
107 INCLTDL="$LTDLINCL"
108 AC_SUBST([INCLTDL])
109 ])# _LTDL_CONVENIENCE
110
111
112 # LTDL_INSTALLABLE
113 # ----------------
114 # sets LIBLTDL to the link flags for the libltdl installable library
115 # and LTDLINCL to the include flags for the libltdl header and adds
116 # --enable-ltdl-install to the configure arguments. Note that
117 # AC_CONFIG_SUBDIRS is not called from here. If an installed libltdl
118 # is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if
119 # available, otherwise with '${top_builddir}/', and LTDLINCL will be
120 # prefixed with '${top_srcdir}/' (note the single quotes!). If your
121 # package is not flat and you're not using automake, define top_build_prefix,
122 # top_builddir, and top_srcdir appropriately in your Makefiles.
123 # In the future, this macro may have to be called after LT_INIT.
124 AC_DEFUN([LTDL_INSTALLABLE],
125 [AC_BEFORE([$0], [LTDL_INIT])dnl
126 dnl Although the argument is deprecated and no longer documented,
127 dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
128 dnl here make sure it is the same as any other declaration of libltdl's
129 dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
130 dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
131 m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
132 _$0()
133 ])# LTDL_INSTALLABLE
134
135 # AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools,
136 # now we have LT_CONFIG_LTDL_DIR:
137 AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
138 [_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
139 _LTDL_INSTALLABLE])
140
141 dnl aclocal-1.4 backwards compatibility:
142 dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])
143
144
145 # _LTDL_INSTALLABLE
146 # -----------------
147 # Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
148 m4_defun([_LTDL_INSTALLABLE],
149 [if test -f $prefix/lib/libltdl.la; then
150 lt_save_LDFLAGS="$LDFLAGS"
151 LDFLAGS="-L$prefix/lib $LDFLAGS"
152 AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
153 LDFLAGS="$lt_save_LDFLAGS"
154 if test x"${lt_lib_ltdl-no}" = xyes; then
155 if test x"$enable_ltdl_install" != xyes; then
156 # Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
157 AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install'])
158 enable_ltdl_install=no
159 fi
160 elif test x"$enable_ltdl_install" = xno; then
161 AC_MSG_WARN([libltdl not installed, but installation disabled])
162 fi
163 fi
164
165 # If configure.ac declared an installable ltdl, and the user didn't override
166 # with --disable-ltdl-install, we will install the shipped libltdl.
167 case $enable_ltdl_install in
168 no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
169 LIBLTDL="-lltdl"
170 LTDLDEPS=
171 LTDLINCL=
172 ;;
173 *) enable_ltdl_install=yes
174 ac_configure_args="$ac_configure_args --enable-ltdl-install"
175 LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
176 LTDLDEPS=$LIBLTDL
177 LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
178 ;;
179 esac
180
181 AC_SUBST([LIBLTDL])
182 AC_SUBST([LTDLDEPS])
183 AC_SUBST([LTDLINCL])
184
185 # For backwards non-gettext consistent compatibility...
186 INCLTDL="$LTDLINCL"
187 AC_SUBST([INCLTDL])
188 ])# LTDL_INSTALLABLE
189
190
191 # _LTDL_MODE_DISPATCH
192 # -------------------
193 m4_define([_LTDL_MODE_DISPATCH],
194 [dnl If _LTDL_DIR is `.', then we are configuring libltdl itself:
195 m4_if(_LTDL_DIR, [],
196 [],
197 dnl if _LTDL_MODE was not set already, the default value is `subproject':
198 [m4_case(m4_default(_LTDL_MODE, [subproject]),
199 [subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
200 _LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])],
201 [nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])],
202 [recursive], [],
203 [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
204 dnl Be careful not to expand twice:
205 m4_define([$0], [])
206 ])# _LTDL_MODE_DISPATCH
207
208
209 # _LT_LIBOBJ(MODULE_NAME)
210 # -----------------------
211 # Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
212 # of into LIBOBJS.
213 AC_DEFUN([_LT_LIBOBJ], [
214 m4_pattern_allow([^_LT_LIBOBJS$])
215 _LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext"
216 ])# _LT_LIBOBJS
217
218
219 # LTDL_INIT([OPTIONS])
220 # --------------------
221 # Clients of libltdl can use this macro to allow the installer to
222 # choose between a shipped copy of the ltdl sources or a preinstalled
223 # version of the library. If the shipped ltdl sources are not in a
224 # subdirectory named libltdl, the directory name must be given by
225 # LT_CONFIG_LTDL_DIR.
226 AC_DEFUN([LTDL_INIT],
227 [dnl Parse OPTIONS
228 _LT_SET_OPTIONS([$0], [$1])
229
230 dnl We need to keep our own list of libobjs separate from our parent project,
231 dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
232 dnl we look for our own LIBOBJs.
233 m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
234 m4_pushdef([AC_LIBSOURCES])
235
236 dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
237 m4_if(_LTDL_MODE, [],
238 [m4_define([_LTDL_MODE], m4_default([$2], [subproject]))
239 m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])],
240 [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])
241
242 AC_ARG_WITH([included_ltdl],
243 [AS_HELP_STRING([--with-included-ltdl],
244 [use the GNU ltdl sources included here])])
245
246 if test "x$with_included_ltdl" != xyes; then
247 # We are not being forced to use the included libltdl sources, so
248 # decide whether there is a useful installed version we can use.
249 AC_CHECK_HEADER([ltdl.h],
250 [AC_CHECK_DECL([lt_dlinterface_register],
251 [AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
252 [with_included_ltdl=no],
253 [with_included_ltdl=yes])],
254 [with_included_ltdl=yes],
255 [AC_INCLUDES_DEFAULT
256 #include <ltdl.h>])],
257 [with_included_ltdl=yes],
258 [AC_INCLUDES_DEFAULT]
259 )
260 fi
261
262 dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
263 dnl was called yet, then for old times' sake, we assume libltdl is in an
264 dnl eponymous directory:
265 AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])
266
267 AC_ARG_WITH([ltdl_include],
268 [AS_HELP_STRING([--with-ltdl-include=DIR],
269 [use the ltdl headers installed in DIR])])
270
271 if test -n "$with_ltdl_include"; then
272 if test -f "$with_ltdl_include/ltdl.h"; then :
273 else
274 AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include'])
275 fi
276 else
277 with_ltdl_include=no
278 fi
279
280 AC_ARG_WITH([ltdl_lib],
281 [AS_HELP_STRING([--with-ltdl-lib=DIR],
282 [use the libltdl.la installed in DIR])])
283
284 if test -n "$with_ltdl_lib"; then
285 if test -f "$with_ltdl_lib/libltdl.la"; then :
286 else
287 AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib'])
288 fi
289 else
290 with_ltdl_lib=no
291 fi
292
293 case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
294 ,yes,no,no,)
295 m4_case(m4_default(_LTDL_TYPE, [convenience]),
296 [convenience], [_LTDL_CONVENIENCE],
297 [installable], [_LTDL_INSTALLABLE],
298 [m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)])
299 ;;
300 ,no,no,no,)
301 # If the included ltdl is not to be used, then use the
302 # preinstalled libltdl we found.
303 AC_DEFINE([HAVE_LTDL], [1],
304 [Define this if a modern libltdl is already installed])
305 LIBLTDL=-lltdl
306 LTDLDEPS=
307 LTDLINCL=
308 ;;
309 ,no*,no,*)
310 AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together])
311 ;;
312 *) with_included_ltdl=no
313 LIBLTDL="-L$with_ltdl_lib -lltdl"
314 LTDLDEPS=
315 LTDLINCL="-I$with_ltdl_include"
316 ;;
317 esac
318 INCLTDL="$LTDLINCL"
319
320 # Report our decision...
321 AC_MSG_CHECKING([where to find libltdl headers])
322 AC_MSG_RESULT([$LTDLINCL])
323 AC_MSG_CHECKING([where to find libltdl library])
324 AC_MSG_RESULT([$LIBLTDL])
325
326 _LTDL_SETUP
327
328 dnl restore autoconf definition.
329 m4_popdef([AC_LIBOBJ])
330 m4_popdef([AC_LIBSOURCES])
331
332 AC_CONFIG_COMMANDS_PRE([
333 _ltdl_libobjs=
334 _ltdl_ltlibobjs=
335 if test -n "$_LT_LIBOBJS"; then
336 # Remove the extension.
337 _lt_sed_drop_objext='s/\.o$//;s/\.obj$//'
338 for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | sed "$_lt_sed_drop_objext" | sort -u`; do
339 _ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext"
340 _ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo"
341 done
342 fi
343 AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs])
344 AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs])
345 ])
346
347 # Only expand once:
348 m4_define([LTDL_INIT])
349 ])# LTDL_INIT
350
351 # Old names:
352 AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
353 AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
354 AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
355 dnl aclocal-1.4 backwards compatibility:
356 dnl AC_DEFUN([AC_LIB_LTDL], [])
357 dnl AC_DEFUN([AC_WITH_LTDL], [])
358 dnl AC_DEFUN([LT_WITH_LTDL], [])
359
360
361 # _LTDL_SETUP
362 # -----------
363 # Perform all the checks necessary for compilation of the ltdl objects
364 # -- including compiler checks and header checks. This is a public
365 # interface mainly for the benefit of libltdl's own configure.ac, most
366 # other users should call LTDL_INIT instead.
367 AC_DEFUN([_LTDL_SETUP],
368 [AC_REQUIRE([AC_PROG_CC])dnl
369 AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
370 AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
371 AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
372 AC_REQUIRE([LT_LIB_DLLOAD])dnl
373 AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
374 AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
375 AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
376 AC_REQUIRE([gl_FUNC_ARGZ])dnl
377
378 m4_require([_LT_CHECK_OBJDIR])dnl
379 m4_require([_LT_HEADER_DLFCN])dnl
380 m4_require([_LT_CHECK_DLPREOPEN])dnl
381 m4_require([_LT_DECL_SED])dnl
382
383 dnl Don't require this, or it will be expanded earlier than the code
384 dnl that sets the variables it relies on:
385 _LT_ENABLE_INSTALL
386
387 dnl _LTDL_MODE specific code must be called at least once:
388 _LTDL_MODE_DISPATCH
389
390 # In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
391 # the user used. This is so that ltdl.h can pick up the parent projects
392 # config.h file, The first file in AC_CONFIG_HEADERS must contain the
393 # definitions required by ltdl.c.
394 # FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
395 AC_CONFIG_COMMANDS_PRE([dnl
396 m4_pattern_allow([^LT_CONFIG_H$])dnl
397 m4_ifset([AH_HEADER],
398 [LT_CONFIG_H=AH_HEADER],
399 [m4_ifset([AC_LIST_HEADERS],
400 [LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[ ]]*,,;s,[[ :]].*$,,'`],
401 [])])])
402 AC_SUBST([LT_CONFIG_H])
403
404 AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
405 [], [], [AC_INCLUDES_DEFAULT])
406
407 AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
408 AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])
409
410 AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])
411
412 name=ltdl
413 LTDLOPEN=`eval "\\$ECHO \"$libname_spec\""`
414 AC_SUBST([LTDLOPEN])
415 ])# _LTDL_SETUP
416
417
418 # _LT_ENABLE_INSTALL
419 # ------------------
420 m4_define([_LT_ENABLE_INSTALL],
421 [AC_ARG_ENABLE([ltdl-install],
422 [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
423
424 case ,${enable_ltdl_install},${enable_ltdl_convenience} in
425 *yes*) ;;
426 *) enable_ltdl_convenience=yes ;;
427 esac
428
429 m4_ifdef([AM_CONDITIONAL],
430 [AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
431 AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)])
432 ])# _LT_ENABLE_INSTALL
433
434
435 # LT_SYS_DLOPEN_DEPLIBS
436 # ---------------------
437 AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
438 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
439 AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
440 [lt_cv_sys_dlopen_deplibs],
441 [# PORTME does your system automatically load deplibs for dlopen?
442 # or its logical equivalent (e.g. shl_load for HP-UX < 11)
443 # For now, we just catch OSes we know something about -- in the
444 # future, we'll try test this programmatically.
445 lt_cv_sys_dlopen_deplibs=unknown
446 case $host_os in
447 aix3*|aix4.1.*|aix4.2.*)
448 # Unknown whether this is true for these versions of AIX, but
449 # we want this `case' here to explicitly catch those versions.
450 lt_cv_sys_dlopen_deplibs=unknown
451 ;;
452 aix[[4-9]]*)
453 lt_cv_sys_dlopen_deplibs=yes
454 ;;
455 amigaos*)
456 case $host_cpu in
457 powerpc)
458 lt_cv_sys_dlopen_deplibs=no
459 ;;
460 esac
461 ;;
462 darwin*)
463 # Assuming the user has installed a libdl from somewhere, this is true
464 # If you are looking for one http://www.opendarwin.org/projects/dlcompat
465 lt_cv_sys_dlopen_deplibs=yes
466 ;;
467 freebsd* | dragonfly*)
468 lt_cv_sys_dlopen_deplibs=yes
469 ;;
470 gnu* | linux* | k*bsd*-gnu)
471 # GNU and its variants, using gnu ld.so (Glibc)
472 lt_cv_sys_dlopen_deplibs=yes
473 ;;
474 hpux10*|hpux11*)
475 lt_cv_sys_dlopen_deplibs=yes
476 ;;
477 interix*)
478 lt_cv_sys_dlopen_deplibs=yes
479 ;;
480 irix[[12345]]*|irix6.[[01]]*)
481 # Catch all versions of IRIX before 6.2, and indicate that we don't
482 # know how it worked for any of those versions.
483 lt_cv_sys_dlopen_deplibs=unknown
484 ;;
485 irix*)
486 # The case above catches anything before 6.2, and it's known that
487 # at 6.2 and later dlopen does load deplibs.
488 lt_cv_sys_dlopen_deplibs=yes
489 ;;
490 netbsd*)
491 lt_cv_sys_dlopen_deplibs=yes
492 ;;
493 openbsd*)
494 lt_cv_sys_dlopen_deplibs=yes
495 ;;
496 osf[[1234]]*)
497 # dlopen did load deplibs (at least at 4.x), but until the 5.x series,
498 # it did *not* use an RPATH in a shared library to find objects the
499 # library depends on, so we explicitly say `no'.
500 lt_cv_sys_dlopen_deplibs=no
501 ;;
502 osf5.0|osf5.0a|osf5.1)
503 # dlopen *does* load deplibs and with the right loader patch applied
504 # it even uses RPATH in a shared library to search for shared objects
505 # that the library depends on, but there's no easy way to know if that
506 # patch is installed. Since this is the case, all we can really
507 # say is unknown -- it depends on the patch being installed. If
508 # it is, this changes to `yes'. Without it, it would be `no'.
509 lt_cv_sys_dlopen_deplibs=unknown
510 ;;
511 osf*)
512 # the two cases above should catch all versions of osf <= 5.1. Read
513 # the comments above for what we know about them.
514 # At > 5.1, deplibs are loaded *and* any RPATH in a shared library
515 # is used to find them so we can finally say `yes'.
516 lt_cv_sys_dlopen_deplibs=yes
517 ;;
518 qnx*)
519 lt_cv_sys_dlopen_deplibs=yes
520 ;;
521 solaris*)
522 lt_cv_sys_dlopen_deplibs=yes
523 ;;
524 sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
525 libltdl_cv_sys_dlopen_deplibs=yes
526 ;;
527 esac
528 ])
529 if test "$lt_cv_sys_dlopen_deplibs" != yes; then
530 AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
531 [Define if the OS needs help to load dependent libraries for dlopen().])
532 fi
533 ])# LT_SYS_DLOPEN_DEPLIBS
534
535 # Old name:
536 AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
537 dnl aclocal-1.4 backwards compatibility:
538 dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
539
540
541 # LT_SYS_MODULE_EXT
542 # -----------------
543 AC_DEFUN([LT_SYS_MODULE_EXT],
544 [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
545 AC_CACHE_CHECK([which extension is used for runtime loadable modules],
546 [libltdl_cv_shlibext],
547 [
548 module=yes
549 eval libltdl_cv_shlibext=$shrext_cmds
550 ])
551 if test -n "$libltdl_cv_shlibext"; then
552 m4_pattern_allow([LT_MODULE_EXT])dnl
553 AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
554 [Define to the extension used for runtime loadable modules, say, ".so".])
555 fi
556 ])# LT_SYS_MODULE_EXT
557
558 # Old name:
559 AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
560 dnl aclocal-1.4 backwards compatibility:
561 dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
562
563
564 # LT_SYS_MODULE_PATH
565 # ------------------
566 AC_DEFUN([LT_SYS_MODULE_PATH],
567 [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
568 AC_CACHE_CHECK([which variable specifies run-time module search path],
569 [lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"])
570 if test -n "$lt_cv_module_path_var"; then
571 m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
572 AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
573 [Define to the name of the environment variable that determines the run-time module search path.])
574 fi
575 ])# LT_SYS_MODULE_PATH
576
577 # Old name:
578 AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
579 dnl aclocal-1.4 backwards compatibility:
580 dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
581
582
583 # LT_SYS_DLSEARCH_PATH
584 # --------------------
585 AC_DEFUN([LT_SYS_DLSEARCH_PATH],
586 [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
587 AC_CACHE_CHECK([for the default library search path],
588 [lt_cv_sys_dlsearch_path],
589 [lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"])
590 if test -n "$lt_cv_sys_dlsearch_path"; then
591 sys_dlsearch_path=
592 for dir in $lt_cv_sys_dlsearch_path; do
593 if test -z "$sys_dlsearch_path"; then
594 sys_dlsearch_path="$dir"
595 else
596 sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir"
597 fi
598 done
599 m4_pattern_allow([LT_DLSEARCH_PATH])dnl
600 AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
601 [Define to the system default library search path.])
602 fi
603 ])# LT_SYS_DLSEARCH_PATH
604
605 # Old name:
606 AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
607 dnl aclocal-1.4 backwards compatibility:
608 dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
609
610
611 # _LT_CHECK_DLPREOPEN
612 # -------------------
613 m4_defun([_LT_CHECK_DLPREOPEN],
614 [m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
615 AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
616 [libltdl_cv_preloaded_symbols],
617 [if test -n "$lt_cv_sys_global_symbol_pipe"; then
618 libltdl_cv_preloaded_symbols=yes
619 else
620 libltdl_cv_preloaded_symbols=no
621 fi
622 ])
623 if test x"$libltdl_cv_preloaded_symbols" = xyes; then
624 AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
625 [Define if libtool can extract symbol lists from object files.])
626 fi
627 ])# _LT_CHECK_DLPREOPEN
628
629
630 # LT_LIB_DLLOAD
631 # -------------
632 AC_DEFUN([LT_LIB_DLLOAD],
633 [m4_pattern_allow([^LT_DLLOADERS$])
634 LT_DLLOADERS=
635 AC_SUBST([LT_DLLOADERS])
636
637 AC_LANG_PUSH([C])
638
639 LIBADD_DLOPEN=
640 AC_SEARCH_LIBS([dlopen], [dl],
641 [AC_DEFINE([HAVE_LIBDL], [1],
642 [Define if you have the libdl library or equivalent.])
643 if test "$ac_cv_search_dlopen" != "none required" ; then
644 LIBADD_DLOPEN="-ldl"
645 fi
646 libltdl_cv_lib_dl_dlopen="yes"
647 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
648 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
649 # include <dlfcn.h>
650 #endif
651 ]], [[dlopen(0, 0);]])],
652 [AC_DEFINE([HAVE_LIBDL], [1],
653 [Define if you have the libdl library or equivalent.])
654 libltdl_cv_func_dlopen="yes"
655 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
656 [AC_CHECK_LIB([svld], [dlopen],
657 [AC_DEFINE([HAVE_LIBDL], [1],
658 [Define if you have the libdl library or equivalent.])
659 LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes"
660 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
661 if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
662 then
663 lt_save_LIBS="$LIBS"
664 LIBS="$LIBS $LIBADD_DLOPEN"
665 AC_CHECK_FUNCS([dlerror])
666 LIBS="$lt_save_LIBS"
667 fi
668 AC_SUBST([LIBADD_DLOPEN])
669
670 LIBADD_SHL_LOAD=
671 AC_CHECK_FUNC([shl_load],
672 [AC_DEFINE([HAVE_SHL_LOAD], [1],
673 [Define if you have the shl_load function.])
674 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
675 [AC_CHECK_LIB([dld], [shl_load],
676 [AC_DEFINE([HAVE_SHL_LOAD], [1],
677 [Define if you have the shl_load function.])
678 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
679 LIBADD_SHL_LOAD="-ldld"])])
680 AC_SUBST([LIBADD_SHL_LOAD])
681
682 case $host_os in
683 darwin[[1567]].*)
684 # We only want this for pre-Mac OS X 10.4.
685 AC_CHECK_FUNC([_dyld_func_lookup],
686 [AC_DEFINE([HAVE_DYLD], [1],
687 [Define if you have the _dyld_func_lookup function.])
688 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
689 ;;
690 beos*)
691 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
692 ;;
693 cygwin* | mingw* | os2* | pw32*)
694 AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
695 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
696 ;;
697 esac
698
699 AC_CHECK_LIB([dld], [dld_link],
700 [AC_DEFINE([HAVE_DLD], [1],
701 [Define if you have the GNU dld library.])
702 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
703 AC_SUBST([LIBADD_DLD_LINK])
704
705 m4_pattern_allow([^LT_DLPREOPEN$])
706 LT_DLPREOPEN=
707 if test -n "$LT_DLLOADERS"
708 then
709 for lt_loader in $LT_DLLOADERS; do
710 LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
711 done
712 AC_DEFINE([HAVE_LIBDLLOADER], [1],
713 [Define if libdlloader will be built on this platform])
714 fi
715 AC_SUBST([LT_DLPREOPEN])
716
717 dnl This isn't used anymore, but set it for backwards compatibility
718 LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
719 AC_SUBST([LIBADD_DL])
720
721 AC_LANG_POP
722 ])# LT_LIB_DLLOAD
723
724 # Old name:
725 AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
726 dnl aclocal-1.4 backwards compatibility:
727 dnl AC_DEFUN([AC_LTDL_DLLIB], [])
728
729
730 # LT_SYS_SYMBOL_USCORE
731 # --------------------
732 # does the compiler prefix global symbols with an underscore?
733 AC_DEFUN([LT_SYS_SYMBOL_USCORE],
734 [m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
735 AC_CACHE_CHECK([for _ prefix in compiled symbols],
736 [lt_cv_sys_symbol_underscore],
737 [lt_cv_sys_symbol_underscore=no
738 cat > conftest.$ac_ext <<_LT_EOF
739 void nm_test_func(){}
740 int main(){nm_test_func;return 0;}
741 _LT_EOF
742 if AC_TRY_EVAL(ac_compile); then
743 # Now try to grab the symbols.
744 ac_nlist=conftest.nm
745 if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
746 # See whether the symbols have a leading underscore.
747 if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
748 lt_cv_sys_symbol_underscore=yes
749 else
750 if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
751 :
752 else
753 echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
754 fi
755 fi
756 else
757 echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
758 fi
759 else
760 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
761 cat conftest.c >&AS_MESSAGE_LOG_FD
762 fi
763 rm -rf conftest*
764 ])
765 sys_symbol_underscore=$lt_cv_sys_symbol_underscore
766 AC_SUBST([sys_symbol_underscore])
767 ])# LT_SYS_SYMBOL_USCORE
768
769 # Old name:
770 AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
771 dnl aclocal-1.4 backwards compatibility:
772 dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
773
774
775 # LT_FUNC_DLSYM_USCORE
776 # --------------------
777 AC_DEFUN([LT_FUNC_DLSYM_USCORE],
778 [AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
779 if test x"$lt_cv_sys_symbol_underscore" = xyes; then
780 if test x"$libltdl_cv_func_dlopen" = xyes ||
781 test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then
782 AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
783 [libltdl_cv_need_uscore],
784 [libltdl_cv_need_uscore=unknown
785 save_LIBS="$LIBS"
786 LIBS="$LIBS $LIBADD_DLOPEN"
787 _LT_TRY_DLOPEN_SELF(
788 [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
789 [], [libltdl_cv_need_uscore=cross])
790 LIBS="$save_LIBS"
791 ])
792 fi
793 fi
794
795 if test x"$libltdl_cv_need_uscore" = xyes; then
796 AC_DEFINE([NEED_USCORE], [1],
797 [Define if dlsym() requires a leading underscore in symbol names.])
798 fi
799 ])# LT_FUNC_DLSYM_USCORE
800
801 # Old name:
802 AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
803 dnl aclocal-1.4 backwards compatibility:
804 dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])

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