1
##############################################################################
2
# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
4
# Copyright (C) 1999-2006, 2007, 2008 Free Software Foundation, Inc.
5
# Written by Thomas Tanner, 1999
7
# This file is free software; the Free Software Foundation gives
8
# unlimited permission to copy and/or distribute it, with or without
9
# modifications, as long as this notice is preserved.
13
# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
14
# ------------------------------------------
15
# DIRECTORY contains the libltdl sources. It is okay to call this
16
# function multiple times, as long as the same DIRECTORY is always given.
17
AC_DEFUN([LT_CONFIG_LTDL_DIR],
18
[AC_BEFORE([$0], [LTDL_INIT])
20
])# LT_CONFIG_LTDL_DIR
22
# We break this out into a separate macro, so that we can call it safely
23
# internally without being caught accidentally by the sed scan in libtoolize.
24
m4_defun([_LT_CONFIG_LTDL_DIR],
25
[dnl remove trailing slashes
26
m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
28
[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.'
31
[m4_define([_LTDL_DIR], _ARG_DIR)
32
_LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
33
[m4_if(_ARG_DIR, _LTDL_DIR,
35
[m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])])
37
])# _LT_CONFIG_LTDL_DIR
40
m4_define([_LTDL_DIR], [])
45
# If Autoconf is new enough, expand to `${top_build_prefix}', otherwise
46
# to `${top_builddir}/'.
47
m4_define([_LT_BUILD_PREFIX],
48
[m4_ifdef([AC_AUTOCONF_VERSION],
49
[m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
50
[-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
51
[${top_build_prefix}],
53
[${top_build_prefix}])],
54
[${top_builddir}/])[]dnl
60
# sets LIBLTDL to the link flags for the libltdl convenience library and
61
# LTDLINCL to the include flags for the libltdl header and adds
62
# --enable-ltdl-convenience to the configure arguments. Note that
63
# AC_CONFIG_SUBDIRS is not called here. LIBLTDL will be prefixed with
64
# '${top_build_prefix}' if available, otherwise with '${top_builddir}/',
65
# and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single
66
# quotes!). If your package is not flat and you're not using automake,
67
# define top_build_prefix, top_builddir, and top_srcdir appropriately
69
AC_DEFUN([LTDL_CONVENIENCE],
70
[AC_BEFORE([$0], [LTDL_INIT])dnl
71
dnl Although the argument is deprecated and no longer documented,
72
dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
73
dnl here make sure it is the same as any other declaration of libltdl's
74
dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
75
dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
76
m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
80
# AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools,
81
# now we have LT_CONFIG_LTDL_DIR:
82
AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
83
[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
86
dnl aclocal-1.4 backwards compatibility:
87
dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])
92
# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
93
m4_defun([_LTDL_CONVENIENCE],
94
[case $enable_ltdl_convenience in
95
no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
96
"") enable_ltdl_convenience=yes
97
ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
99
LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
101
LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
107
# For backwards non-gettext consistent compatibility...
110
])# _LTDL_CONVENIENCE
115
# sets LIBLTDL to the link flags for the libltdl installable library
116
# and LTDLINCL to the include flags for the libltdl header and adds
117
# --enable-ltdl-install to the configure arguments. Note that
118
# AC_CONFIG_SUBDIRS is not called from here. If an installed libltdl
119
# is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if
120
# available, otherwise with '${top_builddir}/', and LTDLINCL will be
121
# prefixed with '${top_srcdir}/' (note the single quotes!). If your
122
# package is not flat and you're not using automake, define top_build_prefix,
123
# top_builddir, and top_srcdir appropriately in your Makefiles.
124
# In the future, this macro may have to be called after LT_INIT.
125
AC_DEFUN([LTDL_INSTALLABLE],
126
[AC_BEFORE([$0], [LTDL_INIT])dnl
127
dnl Although the argument is deprecated and no longer documented,
128
dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
129
dnl here make sure it is the same as any other declaration of libltdl's
130
dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
131
dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
132
m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
136
# AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools,
137
# now we have LT_CONFIG_LTDL_DIR:
138
AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
139
[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
142
dnl aclocal-1.4 backwards compatibility:
143
dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])
148
# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
149
m4_defun([_LTDL_INSTALLABLE],
150
[if test -f $prefix/lib/libltdl.la; then
151
lt_save_LDFLAGS="$LDFLAGS"
152
LDFLAGS="-L$prefix/lib $LDFLAGS"
153
AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
154
LDFLAGS="$lt_save_LDFLAGS"
155
if test x"${lt_lib_ltdl-no}" = xyes; then
156
if test x"$enable_ltdl_install" != xyes; then
157
# Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
158
AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install'])
159
enable_ltdl_install=no
161
elif test x"$enable_ltdl_install" = xno; then
162
AC_MSG_WARN([libltdl not installed, but installation disabled])
166
# If configure.ac declared an installable ltdl, and the user didn't override
167
# with --disable-ltdl-install, we will install the shipped libltdl.
168
case $enable_ltdl_install in
169
no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
174
*) enable_ltdl_install=yes
175
ac_configure_args="$ac_configure_args --enable-ltdl-install"
176
LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
178
LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
186
# For backwards non-gettext consistent compatibility...
192
# _LTDL_MODE_DISPATCH
193
# -------------------
194
m4_define([_LTDL_MODE_DISPATCH],
195
[dnl If _LTDL_DIR is `.', then we are configuring libltdl itself:
198
dnl if _LTDL_MODE was not set already, the default value is `subproject':
199
[m4_case(m4_default(_LTDL_MODE, [subproject]),
200
[subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
201
_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])],
202
[nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])],
204
[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
205
dnl Be careful not to expand twice:
207
])# _LTDL_MODE_DISPATCH
210
# _LT_LIBOBJ(MODULE_NAME)
211
# -----------------------
212
# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
214
AC_DEFUN([_LT_LIBOBJ], [
215
m4_pattern_allow([^_LT_LIBOBJS$])
216
_LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext"
220
# LTDL_INIT([OPTIONS])
221
# --------------------
222
# Clients of libltdl can use this macro to allow the installer to
223
# choose between a shipped copy of the ltdl sources or a preinstalled
224
# version of the library. If the shipped ltdl sources are not in a
225
# subdirectory named libltdl, the directory name must be given by
226
# LT_CONFIG_LTDL_DIR.
227
AC_DEFUN([LTDL_INIT],
229
_LT_SET_OPTIONS([$0], [$1])
231
dnl We need to keep our own list of libobjs separate from our parent project,
232
dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
233
dnl we look for our own LIBOBJs.
234
m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
235
m4_pushdef([AC_LIBSOURCES])
237
dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
238
m4_if(_LTDL_MODE, [],
239
[m4_define([_LTDL_MODE], m4_default([$2], [subproject]))
240
m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])],
241
[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])
243
AC_ARG_WITH([included_ltdl],
244
[AS_HELP_STRING([--with-included-ltdl],
245
[use the GNU ltdl sources included here])])
247
if test "x$with_included_ltdl" != xyes; then
248
# We are not being forced to use the included libltdl sources, so
249
# decide whether there is a useful installed version we can use.
250
AC_CHECK_HEADER([ltdl.h],
251
[AC_CHECK_DECL([lt_dlinterface_register],
252
[AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
253
[with_included_ltdl=no],
254
[with_included_ltdl=yes])],
255
[with_included_ltdl=yes],
257
#include <ltdl.h>])],
258
[with_included_ltdl=yes],
259
[AC_INCLUDES_DEFAULT]
263
dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
264
dnl was called yet, then for old times' sake, we assume libltdl is in an
265
dnl eponymous directory:
266
AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])
268
AC_ARG_WITH([ltdl_include],
269
[AS_HELP_STRING([--with-ltdl-include=DIR],
270
[use the ltdl headers installed in DIR])])
272
if test -n "$with_ltdl_include"; then
273
if test -f "$with_ltdl_include/ltdl.h"; then :
275
AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include'])
281
AC_ARG_WITH([ltdl_lib],
282
[AS_HELP_STRING([--with-ltdl-lib=DIR],
283
[use the libltdl.la installed in DIR])])
285
if test -n "$with_ltdl_lib"; then
286
if test -f "$with_ltdl_lib/libltdl.la"; then :
288
AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib'])
294
case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
296
m4_case(m4_default(_LTDL_TYPE, [convenience]),
297
[convenience], [_LTDL_CONVENIENCE],
298
[installable], [_LTDL_INSTALLABLE],
299
[m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)])
302
# If the included ltdl is not to be used, then use the
303
# preinstalled libltdl we found.
304
AC_DEFINE([HAVE_LTDL], [1],
305
[Define this if a modern libltdl is already installed])
311
AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together])
313
*) with_included_ltdl=no
314
LIBLTDL="-L$with_ltdl_lib -lltdl"
316
LTDLINCL="-I$with_ltdl_include"
321
# Report our decision...
322
AC_MSG_CHECKING([where to find libltdl headers])
323
AC_MSG_RESULT([$LTDLINCL])
324
AC_MSG_CHECKING([where to find libltdl library])
325
AC_MSG_RESULT([$LIBLTDL])
329
dnl restore autoconf definition.
330
m4_popdef([AC_LIBOBJ])
331
m4_popdef([AC_LIBSOURCES])
333
AC_CONFIG_COMMANDS_PRE([
336
if test -n "$_LT_LIBOBJS"; then
337
# Remove the extension.
338
_lt_sed_drop_objext='s/\.o$//;s/\.obj$//'
339
for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | sed "$_lt_sed_drop_objext" | sort -u`; do
340
_ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext"
341
_ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo"
344
AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs])
345
AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs])
349
m4_define([LTDL_INIT])
353
AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
354
AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
355
AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
356
dnl aclocal-1.4 backwards compatibility:
357
dnl AC_DEFUN([AC_LIB_LTDL], [])
358
dnl AC_DEFUN([AC_WITH_LTDL], [])
359
dnl AC_DEFUN([LT_WITH_LTDL], [])
364
# Perform all the checks necessary for compilation of the ltdl objects
365
# -- including compiler checks and header checks. This is a public
366
# interface mainly for the benefit of libltdl's own configure.ac, most
367
# other users should call LTDL_INIT instead.
368
AC_DEFUN([_LTDL_SETUP],
369
[AC_REQUIRE([AC_PROG_CC])dnl
370
AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
371
AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
372
AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
373
AC_REQUIRE([LT_LIB_DLLOAD])dnl
374
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
375
AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
376
AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
377
AC_REQUIRE([gl_FUNC_ARGZ])dnl
379
m4_require([_LT_CHECK_OBJDIR])dnl
380
m4_require([_LT_HEADER_DLFCN])dnl
381
m4_require([_LT_CHECK_DLPREOPEN])dnl
382
m4_require([_LT_DECL_SED])dnl
384
dnl Don't require this, or it will be expanded earlier than the code
385
dnl that sets the variables it relies on:
388
dnl _LTDL_MODE specific code must be called at least once:
391
# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
392
# the user used. This is so that ltdl.h can pick up the parent projects
393
# config.h file, The first file in AC_CONFIG_HEADERS must contain the
394
# definitions required by ltdl.c.
395
# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
396
AC_CONFIG_COMMANDS_PRE([dnl
397
m4_pattern_allow([^LT_CONFIG_H$])dnl
398
m4_ifset([AH_HEADER],
399
[LT_CONFIG_H=AH_HEADER],
400
[m4_ifset([AC_LIST_HEADERS],
401
[LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[ ]]*,,;s,[[ :]].*$,,'`],
403
AC_SUBST([LT_CONFIG_H])
405
AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
406
[], [], [AC_INCLUDES_DEFAULT])
408
AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
409
AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])
411
AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])
414
LTDLOPEN=`eval "\\$ECHO \"$libname_spec\""`
421
m4_define([_LT_ENABLE_INSTALL],
422
[AC_ARG_ENABLE([ltdl-install],
423
[AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
425
case ,${enable_ltdl_install},${enable_ltdl_convenience} in
427
*) enable_ltdl_convenience=yes ;;
430
m4_ifdef([AM_CONDITIONAL],
431
[AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
432
AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)])
433
])# _LT_ENABLE_INSTALL
436
# LT_SYS_DLOPEN_DEPLIBS
437
# ---------------------
438
AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
439
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
440
AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
441
[lt_cv_sys_dlopen_deplibs],
442
[# PORTME does your system automatically load deplibs for dlopen?
443
# or its logical equivalent (e.g. shl_load for HP-UX < 11)
444
# For now, we just catch OSes we know something about -- in the
445
# future, we'll try test this programmatically.
446
lt_cv_sys_dlopen_deplibs=unknown
448
aix3*|aix4.1.*|aix4.2.*)
449
# Unknown whether this is true for these versions of AIX, but
450
# we want this `case' here to explicitly catch those versions.
451
lt_cv_sys_dlopen_deplibs=unknown
454
lt_cv_sys_dlopen_deplibs=yes
459
lt_cv_sys_dlopen_deplibs=no
464
# Assuming the user has installed a libdl from somewhere, this is true
465
# If you are looking for one http://www.opendarwin.org/projects/dlcompat
466
lt_cv_sys_dlopen_deplibs=yes
468
freebsd* | dragonfly*)
469
lt_cv_sys_dlopen_deplibs=yes
471
gnu* | linux* | k*bsd*-gnu)
472
# GNU and its variants, using gnu ld.so (Glibc)
473
lt_cv_sys_dlopen_deplibs=yes
476
lt_cv_sys_dlopen_deplibs=yes
479
lt_cv_sys_dlopen_deplibs=yes
481
irix[[12345]]*|irix6.[[01]]*)
482
# Catch all versions of IRIX before 6.2, and indicate that we don't
483
# know how it worked for any of those versions.
484
lt_cv_sys_dlopen_deplibs=unknown
487
# The case above catches anything before 6.2, and it's known that
488
# at 6.2 and later dlopen does load deplibs.
489
lt_cv_sys_dlopen_deplibs=yes
492
lt_cv_sys_dlopen_deplibs=yes
495
lt_cv_sys_dlopen_deplibs=yes
498
# dlopen did load deplibs (at least at 4.x), but until the 5.x series,
499
# it did *not* use an RPATH in a shared library to find objects the
500
# library depends on, so we explicitly say `no'.
501
lt_cv_sys_dlopen_deplibs=no
503
osf5.0|osf5.0a|osf5.1)
504
# dlopen *does* load deplibs and with the right loader patch applied
505
# it even uses RPATH in a shared library to search for shared objects
506
# that the library depends on, but there's no easy way to know if that
507
# patch is installed. Since this is the case, all we can really
508
# say is unknown -- it depends on the patch being installed. If
509
# it is, this changes to `yes'. Without it, it would be `no'.
510
lt_cv_sys_dlopen_deplibs=unknown
513
# the two cases above should catch all versions of osf <= 5.1. Read
514
# the comments above for what we know about them.
515
# At > 5.1, deplibs are loaded *and* any RPATH in a shared library
516
# is used to find them so we can finally say `yes'.
517
lt_cv_sys_dlopen_deplibs=yes
520
lt_cv_sys_dlopen_deplibs=yes
523
lt_cv_sys_dlopen_deplibs=yes
525
sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
526
libltdl_cv_sys_dlopen_deplibs=yes
530
if test "$lt_cv_sys_dlopen_deplibs" != yes; then
531
AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
532
[Define if the OS needs help to load dependent libraries for dlopen().])
534
])# LT_SYS_DLOPEN_DEPLIBS
537
AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
538
dnl aclocal-1.4 backwards compatibility:
539
dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
544
AC_DEFUN([LT_SYS_MODULE_EXT],
545
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
546
AC_CACHE_CHECK([which extension is used for runtime loadable modules],
547
[libltdl_cv_shlibext],
550
eval libltdl_cv_shlibext=$shrext_cmds
552
if test -n "$libltdl_cv_shlibext"; then
553
m4_pattern_allow([LT_MODULE_EXT])dnl
554
AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
555
[Define to the extension used for runtime loadable modules, say, ".so".])
557
])# LT_SYS_MODULE_EXT
560
AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
561
dnl aclocal-1.4 backwards compatibility:
562
dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
567
AC_DEFUN([LT_SYS_MODULE_PATH],
568
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
569
AC_CACHE_CHECK([which variable specifies run-time module search path],
570
[lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"])
571
if test -n "$lt_cv_module_path_var"; then
572
m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
573
AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
574
[Define to the name of the environment variable that determines the run-time module search path.])
576
])# LT_SYS_MODULE_PATH
579
AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
580
dnl aclocal-1.4 backwards compatibility:
581
dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
584
# LT_SYS_DLSEARCH_PATH
585
# --------------------
586
AC_DEFUN([LT_SYS_DLSEARCH_PATH],
587
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
588
AC_CACHE_CHECK([for the default library search path],
589
[lt_cv_sys_dlsearch_path],
590
[lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"])
591
if test -n "$lt_cv_sys_dlsearch_path"; then
593
for dir in $lt_cv_sys_dlsearch_path; do
594
if test -z "$sys_dlsearch_path"; then
595
sys_dlsearch_path="$dir"
597
sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir"
600
m4_pattern_allow([LT_DLSEARCH_PATH])dnl
601
AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
602
[Define to the system default library search path.])
604
])# LT_SYS_DLSEARCH_PATH
607
AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
608
dnl aclocal-1.4 backwards compatibility:
609
dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
612
# _LT_CHECK_DLPREOPEN
613
# -------------------
614
m4_defun([_LT_CHECK_DLPREOPEN],
615
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
616
AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
617
[libltdl_cv_preloaded_symbols],
618
[if test -n "$lt_cv_sys_global_symbol_pipe"; then
619
libltdl_cv_preloaded_symbols=yes
621
libltdl_cv_preloaded_symbols=no
624
if test x"$libltdl_cv_preloaded_symbols" = xyes; then
625
AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
626
[Define if libtool can extract symbol lists from object files.])
628
])# _LT_CHECK_DLPREOPEN
633
AC_DEFUN([LT_LIB_DLLOAD],
634
[m4_pattern_allow([^LT_DLLOADERS$])
636
AC_SUBST([LT_DLLOADERS])
641
AC_SEARCH_LIBS([dlopen], [dl],
642
[AC_DEFINE([HAVE_LIBDL], [1],
643
[Define if you have the libdl library or equivalent.])
644
if test "$ac_cv_search_dlopen" != "none required" ; then
647
libltdl_cv_lib_dl_dlopen="yes"
648
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
649
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
652
]], [[dlopen(0, 0);]])],
653
[AC_DEFINE([HAVE_LIBDL], [1],
654
[Define if you have the libdl library or equivalent.])
655
libltdl_cv_func_dlopen="yes"
656
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
657
[AC_CHECK_LIB([svld], [dlopen],
658
[AC_DEFINE([HAVE_LIBDL], [1],
659
[Define if you have the libdl library or equivalent.])
660
LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes"
661
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
662
if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
665
LIBS="$LIBS $LIBADD_DLOPEN"
666
AC_CHECK_FUNCS([dlerror])
669
AC_SUBST([LIBADD_DLOPEN])
672
AC_CHECK_FUNC([shl_load],
673
[AC_DEFINE([HAVE_SHL_LOAD], [1],
674
[Define if you have the shl_load function.])
675
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
676
[AC_CHECK_LIB([dld], [shl_load],
677
[AC_DEFINE([HAVE_SHL_LOAD], [1],
678
[Define if you have the shl_load function.])
679
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
680
LIBADD_SHL_LOAD="-ldld"])])
681
AC_SUBST([LIBADD_SHL_LOAD])
685
# We only want this for pre-Mac OS X 10.4.
686
AC_CHECK_FUNC([_dyld_func_lookup],
687
[AC_DEFINE([HAVE_DYLD], [1],
688
[Define if you have the _dyld_func_lookup function.])
689
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
692
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
694
cygwin* | mingw* | os2* | pw32*)
695
AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
696
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
700
AC_CHECK_LIB([dld], [dld_link],
701
[AC_DEFINE([HAVE_DLD], [1],
702
[Define if you have the GNU dld library.])
703
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
704
AC_SUBST([LIBADD_DLD_LINK])
706
m4_pattern_allow([^LT_DLPREOPEN$])
708
if test -n "$LT_DLLOADERS"
710
for lt_loader in $LT_DLLOADERS; do
711
LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
713
AC_DEFINE([HAVE_LIBDLLOADER], [1],
714
[Define if libdlloader will be built on this platform])
716
AC_SUBST([LT_DLPREOPEN])
718
dnl This isn't used anymore, but set it for backwards compatibility
719
LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
720
AC_SUBST([LIBADD_DL])
726
AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
727
dnl aclocal-1.4 backwards compatibility:
728
dnl AC_DEFUN([AC_LTDL_DLLIB], [])
731
# LT_SYS_SYMBOL_USCORE
732
# --------------------
733
# does the compiler prefix global symbols with an underscore?
734
AC_DEFUN([LT_SYS_SYMBOL_USCORE],
735
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
736
AC_CACHE_CHECK([for _ prefix in compiled symbols],
737
[lt_cv_sys_symbol_underscore],
738
[lt_cv_sys_symbol_underscore=no
739
cat > conftest.$ac_ext <<_LT_EOF
740
void nm_test_func(){}
741
int main(){nm_test_func;return 0;}
743
if AC_TRY_EVAL(ac_compile); then
744
# Now try to grab the symbols.
746
if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
747
# See whether the symbols have a leading underscore.
748
if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
749
lt_cv_sys_symbol_underscore=yes
751
if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
754
echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
758
echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
761
echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
762
cat conftest.c >&AS_MESSAGE_LOG_FD
766
sys_symbol_underscore=$lt_cv_sys_symbol_underscore
767
AC_SUBST([sys_symbol_underscore])
768
])# LT_SYS_SYMBOL_USCORE
771
AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
772
dnl aclocal-1.4 backwards compatibility:
773
dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
776
# LT_FUNC_DLSYM_USCORE
777
# --------------------
778
AC_DEFUN([LT_FUNC_DLSYM_USCORE],
779
[AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
780
if test x"$lt_cv_sys_symbol_underscore" = xyes; then
781
if test x"$libltdl_cv_func_dlopen" = xyes ||
782
test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then
783
AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
784
[libltdl_cv_need_uscore],
785
[libltdl_cv_need_uscore=unknown
787
LIBS="$LIBS $LIBADD_DLOPEN"
789
[libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
790
[], [libltdl_cv_need_uscore=cross])
796
if test x"$libltdl_cv_need_uscore" = xyes; then
797
AC_DEFINE([NEED_USCORE], [1],
798
[Define if dlsym() requires a leading underscore in symbol names.])
800
])# LT_FUNC_DLSYM_USCORE
803
AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
804
dnl aclocal-1.4 backwards compatibility:
805
dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])
added
removed
acinclude/ltdl.m4
