source: squid-ssl/trunk/fuentes/libltdl/m4/ltdl.m4 @ 5495

Last change on this file since 5495 was 5495, checked in by Juanma, 2 years ago

Initial release

File size: 29.3 KB
Line 
1# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
2#
3#   Copyright (C) 1999-2008, 2011-2015 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 20 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.
16AC_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.
23m4_defun([_LT_CONFIG_LTDL_DIR],
24[dnl remove trailing slashes
25m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
26m4_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['])])])
35m4_popdef([_ARG_DIR])
36])# _LT_CONFIG_LTDL_DIR
37
38# Initialise:
39m4_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)/'.
46m4_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.
68AC_DEFUN([LTDL_CONVENIENCE],
69[AC_BEFORE([$0], [LTDL_INIT])dnl
70dnl Although the argument is deprecated and no longer documented,
71dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
72dnl here make sure it is the same as any other declaration of libltdl's
73dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
74dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
75m4_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:
81AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
82[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
83_LTDL_CONVENIENCE])
84
85dnl aclocal-1.4 backwards compatibility:
86dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])
87
88
89# _LTDL_CONVENIENCE
90# -----------------
91# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
92m4_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" ;;
97esac
98LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
99LTDLDEPS=$LIBLTDL
100LTDLINCL='-I$(top_srcdir)'"${lt_ltdl_dir+/$lt_ltdl_dir}"
101
102AC_SUBST([LIBLTDL])
103AC_SUBST([LTDLDEPS])
104AC_SUBST([LTDLINCL])
105
106# For backwards non-gettext consistent compatibility...
107INCLTDL=$LTDLINCL
108AC_SUBST([INCLTDL])
109])# _LTDL_CONVENIENCE
110
111
112# LTDL_INSTALLABLE
113# ----------------
114# sets LIBLTDL to the link flags for the libltdl installable library
115# and LTDLINCL to the include flags for the libltdl header and adds
116# --enable-ltdl-install to the configure arguments.  Note that
117# AC_CONFIG_SUBDIRS is not called from here.  If an installed libltdl
118# is not found, LIBLTDL will be prefixed with '$(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.
124AC_DEFUN([LTDL_INSTALLABLE],
125[AC_BEFORE([$0], [LTDL_INIT])dnl
126dnl Although the argument is deprecated and no longer documented,
127dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
128dnl here make sure it is the same as any other declaration of libltdl's
129dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
130dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
131m4_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:
137AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
138[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
139_LTDL_INSTALLABLE])
140
141dnl aclocal-1.4 backwards compatibility:
142dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])
143
144
145# _LTDL_INSTALLABLE
146# -----------------
147# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
148m4_defun([_LTDL_INSTALLABLE],
149[if test -f "$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 yes = "${lt_lib_ltdl-no}"; then
155    if test yes != "$enable_ltdl_install"; then
156      # Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
157      AC_MSG_WARN([not overwriting libltdl at $prefix, force with '--enable-ltdl-install'])
158      enable_ltdl_install=no
159    fi
160  elif test no = "$enable_ltdl_install"; then
161    AC_MSG_WARN([libltdl not installed, but installation disabled])
162  fi
163fi
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.
167case $enable_ltdl_install in
168  no) ac_configure_args="$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+/$lt_ltdl_dir}"
178      ;;
179esac
180
181AC_SUBST([LIBLTDL])
182AC_SUBST([LTDLDEPS])
183AC_SUBST([LTDLINCL])
184
185# For backwards non-gettext consistent compatibility...
186INCLTDL=$LTDLINCL
187AC_SUBST([INCLTDL])
188])# LTDL_INSTALLABLE
189
190
191# _LTDL_MODE_DISPATCH
192# -------------------
193m4_define([_LTDL_MODE_DISPATCH],
194[dnl If _LTDL_DIR is '.', then we are configuring libltdl itself:
195m4_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
204dnl Be careful not to expand twice:
205m4_define([$0], [])
206])# _LTDL_MODE_DISPATCH
207
208
209# _LT_LIBOBJ(MODULE_NAME)
210# -----------------------
211# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
212# of into LIBOBJS.
213AC_DEFUN([_LT_LIBOBJ], [
214  m4_pattern_allow([^_LT_LIBOBJS$])
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.
226AC_DEFUN([LTDL_INIT],
227[dnl Parse OPTIONS
228_LT_SET_OPTIONS([$0], [$1])
229
230dnl We need to keep our own list of libobjs separate from our parent project,
231dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
232dnl we look for our own LIBOBJs.
233m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
234m4_pushdef([AC_LIBSOURCES])
235
236dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
237m4_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
242AC_ARG_WITH([included_ltdl],
243    [AS_HELP_STRING([--with-included-ltdl],
244                    [use the GNU ltdl sources included here])])
245
246if test yes != "$with_included_ltdl"; then
247  # We are not being forced to use the included libltdl sources, so
248  # decide whether there is a useful installed version we can use.
249  AC_CHECK_HEADER([ltdl.h],
250      [AC_CHECK_DECL([lt_dlinterface_register],
251           [AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
252               [with_included_ltdl=no],
253               [with_included_ltdl=yes])],
254           [with_included_ltdl=yes],
255           [AC_INCLUDES_DEFAULT
256            #include <ltdl.h>])],
257      [with_included_ltdl=yes],
258      [AC_INCLUDES_DEFAULT]
259  )
260fi
261
262dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
263dnl was called yet, then for old times' sake, we assume libltdl is in an
264dnl eponymous directory:
265AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])
266
267AC_ARG_WITH([ltdl_include],
268    [AS_HELP_STRING([--with-ltdl-include=DIR],
269                    [use the ltdl headers installed in DIR])])
270
271if test -n "$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
276else
277  with_ltdl_include=no
278fi
279
280AC_ARG_WITH([ltdl_lib],
281    [AS_HELP_STRING([--with-ltdl-lib=DIR],
282                    [use the libltdl.la installed in DIR])])
283
284if 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: '$with_ltdl_lib'])
288  fi
289else
290  with_ltdl_lib=no
291fi
292
293case ,$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        ;;
317esac
318INCLTDL=$LTDLINCL
319
320# Report our decision...
321AC_MSG_CHECKING([where to find libltdl headers])
322AC_MSG_RESULT([$LTDLINCL])
323AC_MSG_CHECKING([where to find libltdl library])
324AC_MSG_RESULT([$LIBLTDL])
325
326_LTDL_SETUP
327
328dnl restore autoconf definition.
329m4_popdef([AC_LIBOBJ])
330m4_popdef([AC_LIBSOURCES])
331
332AC_CONFIG_COMMANDS_PRE([
333    _ltdl_libobjs=
334    _ltdl_ltlibobjs=
335    if test -n "$_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:
348m4_define([LTDL_INIT])
349])# LTDL_INIT
350
351# Old names:
352AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
353AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
354AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
355dnl aclocal-1.4 backwards compatibility:
356dnl AC_DEFUN([AC_LIB_LTDL], [])
357dnl AC_DEFUN([AC_WITH_LTDL], [])
358dnl AC_DEFUN([LT_WITH_LTDL], [])
359
360
361# _LTDL_SETUP
362# -----------
363# Perform all the checks necessary for compilation of the ltdl objects
364#  -- including compiler checks and header checks.  This is a public
365# interface  mainly for the benefit of libltdl's own configure.ac, most
366# other users should call LTDL_INIT instead.
367AC_DEFUN([_LTDL_SETUP],
368[AC_REQUIRE([AC_PROG_CC])dnl
369AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
370AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
371AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
372AC_REQUIRE([LT_LIB_DLLOAD])dnl
373AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
374AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
375AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
376AC_REQUIRE([LT_FUNC_ARGZ])dnl
377
378m4_require([_LT_CHECK_OBJDIR])dnl
379m4_require([_LT_HEADER_DLFCN])dnl
380m4_require([_LT_CHECK_DLPREOPEN])dnl
381m4_require([_LT_DECL_SED])dnl
382
383dnl Don't require this, or it will be expanded earlier than the code
384dnl that sets the variables it relies on:
385_LT_ENABLE_INSTALL
386
387dnl _LTDL_MODE specific code must be called at least once:
388_LTDL_MODE_DISPATCH
389
390# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
391# the user used.  This is so that ltdl.h can pick up the parent projects
392# config.h file, The first file in AC_CONFIG_HEADERS must contain the
393# definitions required by ltdl.c.
394# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
395AC_CONFIG_COMMANDS_PRE([dnl
396m4_pattern_allow([^LT_CONFIG_H$])dnl
397m4_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        [])])])
402AC_SUBST([LT_CONFIG_H])
403
404AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
405        [], [], [AC_INCLUDES_DEFAULT])
406
407AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
408AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])
409
410m4_pattern_allow([LT_LIBEXT])dnl
411AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])
412
413name=
414eval "lt_libprefix=\"$libname_spec\""
415m4_pattern_allow([LT_LIBPREFIX])dnl
416AC_DEFINE_UNQUOTED([LT_LIBPREFIX],["$lt_libprefix"],[The archive prefix])
417
418name=ltdl
419eval "LTDLOPEN=\"$libname_spec\""
420AC_SUBST([LTDLOPEN])
421])# _LTDL_SETUP
422
423
424# _LT_ENABLE_INSTALL
425# ------------------
426m4_define([_LT_ENABLE_INSTALL],
427[AC_ARG_ENABLE([ltdl-install],
428    [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
429
430case ,$enable_ltdl_install,$enable_ltdl_convenience in
431  *yes*) ;;
432  *) enable_ltdl_convenience=yes ;;
433esac
434
435m4_ifdef([AM_CONDITIONAL],
436[AM_CONDITIONAL(INSTALL_LTDL, test no != "${enable_ltdl_install-no}")
437 AM_CONDITIONAL(CONVENIENCE_LTDL, test no != "${enable_ltdl_convenience-no}")])
438])# _LT_ENABLE_INSTALL
439
440
441# LT_SYS_DLOPEN_DEPLIBS
442# ---------------------
443AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
444[AC_REQUIRE([AC_CANONICAL_HOST])dnl
445AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
446  [lt_cv_sys_dlopen_deplibs],
447  [# PORTME does your system automatically load deplibs for dlopen?
448  # or its logical equivalent (e.g. shl_load for HP-UX < 11)
449  # For now, we just catch OSes we know something about -- in the
450  # future, we'll try test this programmatically.
451  lt_cv_sys_dlopen_deplibs=unknown
452  case $host_os in
453  aix3*|aix4.1.*|aix4.2.*)
454    # Unknown whether this is true for these versions of AIX, but
455    # we want this 'case' here to explicitly catch those versions.
456    lt_cv_sys_dlopen_deplibs=unknown
457    ;;
458  aix[[4-9]]*)
459    lt_cv_sys_dlopen_deplibs=yes
460    ;;
461  amigaos*)
462    case $host_cpu in
463    powerpc)
464      lt_cv_sys_dlopen_deplibs=no
465      ;;
466    esac
467    ;;
468  bitrig*)
469    lt_cv_sys_dlopen_deplibs=yes
470    ;;
471  darwin*)
472    # Assuming the user has installed a libdl from somewhere, this is true
473    # If you are looking for one http://www.opendarwin.org/projects/dlcompat
474    lt_cv_sys_dlopen_deplibs=yes
475    ;;
476  freebsd* | dragonfly*)
477    lt_cv_sys_dlopen_deplibs=yes
478    ;;
479  gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu)
480    # GNU and its variants, using gnu ld.so (Glibc)
481    lt_cv_sys_dlopen_deplibs=yes
482    ;;
483  hpux10*|hpux11*)
484    lt_cv_sys_dlopen_deplibs=yes
485    ;;
486  interix*)
487    lt_cv_sys_dlopen_deplibs=yes
488    ;;
489  irix[[12345]]*|irix6.[[01]]*)
490    # Catch all versions of IRIX before 6.2, and indicate that we don't
491    # know how it worked for any of those versions.
492    lt_cv_sys_dlopen_deplibs=unknown
493    ;;
494  irix*)
495    # The case above catches anything before 6.2, and it's known that
496    # at 6.2 and later dlopen does load deplibs.
497    lt_cv_sys_dlopen_deplibs=yes
498    ;;
499  netbsd* | netbsdelf*-gnu)
500    lt_cv_sys_dlopen_deplibs=yes
501    ;;
502  openbsd*)
503    lt_cv_sys_dlopen_deplibs=yes
504    ;;
505  osf[[1234]]*)
506    # dlopen did load deplibs (at least at 4.x), but until the 5.x series,
507    # it did *not* use an RPATH in a shared library to find objects the
508    # library depends on, so we explicitly say 'no'.
509    lt_cv_sys_dlopen_deplibs=no
510    ;;
511  osf5.0|osf5.0a|osf5.1)
512    # dlopen *does* load deplibs and with the right loader patch applied
513    # it even uses RPATH in a shared library to search for shared objects
514    # that the library depends on, but there's no easy way to know if that
515    # patch is installed.  Since this is the case, all we can really
516    # say is unknown -- it depends on the patch being installed.  If
517    # it is, this changes to 'yes'.  Without it, it would be 'no'.
518    lt_cv_sys_dlopen_deplibs=unknown
519    ;;
520  osf*)
521    # the two cases above should catch all versions of osf <= 5.1.  Read
522    # the comments above for what we know about them.
523    # At > 5.1, deplibs are loaded *and* any RPATH in a shared library
524    # is used to find them so we can finally say 'yes'.
525    lt_cv_sys_dlopen_deplibs=yes
526    ;;
527  qnx*)
528    lt_cv_sys_dlopen_deplibs=yes
529    ;;
530  solaris*)
531    lt_cv_sys_dlopen_deplibs=yes
532    ;;
533  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
534    libltdl_cv_sys_dlopen_deplibs=yes
535    ;;
536  esac
537  ])
538if test yes != "$lt_cv_sys_dlopen_deplibs"; then
539 AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
540    [Define if the OS needs help to load dependent libraries for dlopen().])
541fi
542])# LT_SYS_DLOPEN_DEPLIBS
543
544# Old name:
545AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
546dnl aclocal-1.4 backwards compatibility:
547dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
548
549
550# LT_SYS_MODULE_EXT
551# -----------------
552AC_DEFUN([LT_SYS_MODULE_EXT],
553[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
554AC_CACHE_CHECK([what extension is used for runtime loadable modules],
555  [libltdl_cv_shlibext],
556[
557module=yes
558eval libltdl_cv_shlibext=$shrext_cmds
559module=no
560eval libltdl_cv_shrext=$shrext_cmds
561  ])
562if test -n "$libltdl_cv_shlibext"; then
563  m4_pattern_allow([LT_MODULE_EXT])dnl
564  AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
565    [Define to the extension used for runtime loadable modules, say, ".so".])
566fi
567if test "$libltdl_cv_shrext" != "$libltdl_cv_shlibext"; then
568  m4_pattern_allow([LT_SHARED_EXT])dnl
569  AC_DEFINE_UNQUOTED([LT_SHARED_EXT], ["$libltdl_cv_shrext"],
570    [Define to the shared library suffix, say, ".dylib".])
571fi
572if test -n "$shared_archive_member_spec"; then
573  m4_pattern_allow([LT_SHARED_LIB_MEMBER])dnl
574  AC_DEFINE_UNQUOTED([LT_SHARED_LIB_MEMBER], ["($shared_archive_member_spec.o)"],
575    [Define to the shared archive member specification, say "(shr.o)".])
576fi
577])# LT_SYS_MODULE_EXT
578
579# Old name:
580AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
581dnl aclocal-1.4 backwards compatibility:
582dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
583
584
585# LT_SYS_MODULE_PATH
586# ------------------
587AC_DEFUN([LT_SYS_MODULE_PATH],
588[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
589AC_CACHE_CHECK([what variable specifies run-time module search path],
590  [lt_cv_module_path_var], [lt_cv_module_path_var=$shlibpath_var])
591if test -n "$lt_cv_module_path_var"; then
592  m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
593  AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
594    [Define to the name of the environment variable that determines the run-time module search path.])
595fi
596])# LT_SYS_MODULE_PATH
597
598# Old name:
599AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
600dnl aclocal-1.4 backwards compatibility:
601dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
602
603
604# LT_SYS_DLSEARCH_PATH
605# --------------------
606AC_DEFUN([LT_SYS_DLSEARCH_PATH],
607[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
608AC_CACHE_CHECK([for the default library search path],
609  [lt_cv_sys_dlsearch_path],
610  [lt_cv_sys_dlsearch_path=$sys_lib_dlsearch_path_spec])
611if test -n "$lt_cv_sys_dlsearch_path"; then
612  sys_dlsearch_path=
613  for dir in $lt_cv_sys_dlsearch_path; do
614    if test -z "$sys_dlsearch_path"; then
615      sys_dlsearch_path=$dir
616    else
617      sys_dlsearch_path=$sys_dlsearch_path$PATH_SEPARATOR$dir
618    fi
619  done
620  m4_pattern_allow([LT_DLSEARCH_PATH])dnl
621  AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
622    [Define to the system default library search path.])
623fi
624])# LT_SYS_DLSEARCH_PATH
625
626# Old name:
627AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
628dnl aclocal-1.4 backwards compatibility:
629dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
630
631
632# _LT_CHECK_DLPREOPEN
633# -------------------
634m4_defun([_LT_CHECK_DLPREOPEN],
635[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
636AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
637  [libltdl_cv_preloaded_symbols],
638  [if test -n "$lt_cv_sys_global_symbol_pipe"; then
639    libltdl_cv_preloaded_symbols=yes
640  else
641    libltdl_cv_preloaded_symbols=no
642  fi
643  ])
644if test yes = "$libltdl_cv_preloaded_symbols"; then
645  AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
646    [Define if libtool can extract symbol lists from object files.])
647fi
648])# _LT_CHECK_DLPREOPEN
649
650
651# LT_LIB_DLLOAD
652# -------------
653AC_DEFUN([LT_LIB_DLLOAD],
654[m4_pattern_allow([^LT_DLLOADERS$])
655LT_DLLOADERS=
656AC_SUBST([LT_DLLOADERS])
657
658AC_LANG_PUSH([C])
659lt_dlload_save_LIBS=$LIBS
660
661LIBADD_DLOPEN=
662AC_SEARCH_LIBS([dlopen], [dl],
663        [AC_DEFINE([HAVE_LIBDL], [1],
664                   [Define if you have the libdl library or equivalent.])
665        if test "$ac_cv_search_dlopen" != "none required"; then
666          LIBADD_DLOPEN=-ldl
667        fi
668        libltdl_cv_lib_dl_dlopen=yes
669        LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
670    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
671#  include <dlfcn.h>
672#endif
673    ]], [[dlopen(0, 0);]])],
674            [AC_DEFINE([HAVE_LIBDL], [1],
675                       [Define if you have the libdl library or equivalent.])
676            libltdl_cv_func_dlopen=yes
677            LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
678        [AC_CHECK_LIB([svld], [dlopen],
679                [AC_DEFINE([HAVE_LIBDL], [1],
680                         [Define if you have the libdl library or equivalent.])
681                LIBADD_DLOPEN=-lsvld libltdl_cv_func_dlopen=yes
682                LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
683if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"
684then
685  lt_save_LIBS=$LIBS
686  LIBS="$LIBS $LIBADD_DLOPEN"
687  AC_CHECK_FUNCS([dlerror])
688  LIBS=$lt_save_LIBS
689fi
690AC_SUBST([LIBADD_DLOPEN])
691
692LIBADD_SHL_LOAD=
693AC_CHECK_FUNC([shl_load],
694        [AC_DEFINE([HAVE_SHL_LOAD], [1],
695                   [Define if you have the shl_load function.])
696        LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
697    [AC_CHECK_LIB([dld], [shl_load],
698            [AC_DEFINE([HAVE_SHL_LOAD], [1],
699                       [Define if you have the shl_load function.])
700            LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
701            LIBADD_SHL_LOAD=-ldld])])
702AC_SUBST([LIBADD_SHL_LOAD])
703
704case $host_os in
705darwin[[1567]].*)
706# We only want this for pre-Mac OS X 10.4.
707  AC_CHECK_FUNC([_dyld_func_lookup],
708        [AC_DEFINE([HAVE_DYLD], [1],
709                   [Define if you have the _dyld_func_lookup function.])
710        LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
711  ;;
712beos*)
713  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
714  ;;
715cygwin* | mingw* | pw32*)
716  AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
717  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
718  ;;
719esac
720
721AC_CHECK_LIB([dld], [dld_link],
722        [AC_DEFINE([HAVE_DLD], [1],
723                   [Define if you have the GNU dld library.])
724                LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
725AC_SUBST([LIBADD_DLD_LINK])
726
727m4_pattern_allow([^LT_DLPREOPEN$])
728LT_DLPREOPEN=
729if test -n "$LT_DLLOADERS"
730then
731  for lt_loader in $LT_DLLOADERS; do
732    LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
733  done
734  AC_DEFINE([HAVE_LIBDLLOADER], [1],
735            [Define if libdlloader will be built on this platform])
736fi
737AC_SUBST([LT_DLPREOPEN])
738
739dnl This isn't used anymore, but set it for backwards compatibility
740LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
741AC_SUBST([LIBADD_DL])
742
743LIBS=$lt_dlload_save_LIBS
744AC_LANG_POP
745])# LT_LIB_DLLOAD
746
747# Old name:
748AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
749dnl aclocal-1.4 backwards compatibility:
750dnl AC_DEFUN([AC_LTDL_DLLIB], [])
751
752
753# LT_SYS_SYMBOL_USCORE
754# --------------------
755# does the compiler prefix global symbols with an underscore?
756AC_DEFUN([LT_SYS_SYMBOL_USCORE],
757[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
758AC_CACHE_CHECK([for _ prefix in compiled symbols],
759  [lt_cv_sys_symbol_underscore],
760  [lt_cv_sys_symbol_underscore=no
761  cat > conftest.$ac_ext <<_LT_EOF
762void nm_test_func(){}
763int main(){nm_test_func;return 0;}
764_LT_EOF
765  if AC_TRY_EVAL(ac_compile); then
766    # Now try to grab the symbols.
767    ac_nlist=conftest.nm
768    if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
769      # See whether the symbols have a leading underscore.
770      if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
771        lt_cv_sys_symbol_underscore=yes
772      else
773        if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
774          :
775        else
776          echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
777        fi
778      fi
779    else
780      echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
781    fi
782  else
783    echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
784    cat conftest.c >&AS_MESSAGE_LOG_FD
785  fi
786  rm -rf conftest*
787  ])
788  sys_symbol_underscore=$lt_cv_sys_symbol_underscore
789  AC_SUBST([sys_symbol_underscore])
790])# LT_SYS_SYMBOL_USCORE
791
792# Old name:
793AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
794dnl aclocal-1.4 backwards compatibility:
795dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
796
797
798# LT_FUNC_DLSYM_USCORE
799# --------------------
800AC_DEFUN([LT_FUNC_DLSYM_USCORE],
801[AC_REQUIRE([_LT_COMPILER_PIC])dnl      for lt_prog_compiler_wl
802AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl   for lt_cv_sys_symbol_underscore
803AC_REQUIRE([LT_SYS_MODULE_EXT])dnl      for libltdl_cv_shlibext
804if test yes = "$lt_cv_sys_symbol_underscore"; then
805  if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"; then
806    AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
807      [libltdl_cv_need_uscore],
808      [libltdl_cv_need_uscore=unknown
809      dlsym_uscore_save_LIBS=$LIBS
810      LIBS="$LIBS $LIBADD_DLOPEN"
811      libname=conftmod # stay within 8.3 filename limits!
812      cat >$libname.$ac_ext <<_LT_EOF
813[#line $LINENO "configure"
814#include "confdefs.h"
815/* When -fvisibility=hidden is used, assume the code has been annotated
816   correspondingly for the symbols needed.  */
817#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
818int fnord () __attribute__((visibility("default")));
819#endif
820int fnord () { return 42; }]
821_LT_EOF
822
823      # ltfn_module_cmds module_cmds
824      # Execute tilde-delimited MODULE_CMDS with environment primed for
825      # $module_cmds or $archive_cmds type content.
826      ltfn_module_cmds ()
827      {( # subshell avoids polluting parent global environment
828          module_cmds_save_ifs=$IFS; IFS='~'
829          for cmd in @S|@1; do
830            IFS=$module_cmds_save_ifs
831            libobjs=$libname.$ac_objext; lib=$libname$libltdl_cv_shlibext
832            rpath=/not-exists; soname=$libname$libltdl_cv_shlibext; output_objdir=.
833            major=; versuffix=; verstring=; deplibs=
834            ECHO=echo; wl=$lt_prog_compiler_wl; allow_undefined_flag=
835            eval $cmd
836          done
837          IFS=$module_cmds_save_ifs
838      )}
839
840      # Compile a loadable module using libtool macro expansion results.
841      $CC $pic_flag -c $libname.$ac_ext
842      ltfn_module_cmds "${module_cmds:-$archive_cmds}"
843
844      # Try to fetch fnord with dlsym().
845      libltdl_dlunknown=0; libltdl_dlnouscore=1; libltdl_dluscore=2
846      cat >conftest.$ac_ext <<_LT_EOF
847[#line $LINENO "configure"
848#include "confdefs.h"
849#if HAVE_DLFCN_H
850#include <dlfcn.h>
851#endif
852#include <stdio.h>
853#ifndef RTLD_GLOBAL
854#  ifdef DL_GLOBAL
855#    define RTLD_GLOBAL DL_GLOBAL
856#  else
857#    define RTLD_GLOBAL 0
858#  endif
859#endif
860#ifndef RTLD_NOW
861#  ifdef DL_NOW
862#    define RTLD_NOW DL_NOW
863#  else
864#    define RTLD_NOW 0
865#  endif
866#endif
867int main () {
868  void *handle = dlopen ("`pwd`/$libname$libltdl_cv_shlibext", RTLD_GLOBAL|RTLD_NOW);
869  int status = $libltdl_dlunknown;
870  if (handle) {
871    if (dlsym (handle, "fnord"))
872      status = $libltdl_dlnouscore;
873    else {
874      if (dlsym (handle, "_fnord"))
875        status = $libltdl_dluscore;
876      else
877        puts (dlerror ());
878    }
879    dlclose (handle);
880  } else
881    puts (dlerror ());
882  return status;
883}]
884_LT_EOF
885      if AC_TRY_EVAL(ac_link) && test -s "conftest$ac_exeext" 2>/dev/null; then
886        (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
887        libltdl_status=$?
888        case x$libltdl_status in
889          x$libltdl_dlnouscore) libltdl_cv_need_uscore=no ;;
890          x$libltdl_dluscore) libltdl_cv_need_uscore=yes ;;
891          x*) libltdl_cv_need_uscore=unknown ;;
892        esac
893      fi
894      rm -rf conftest* $libname*
895      LIBS=$dlsym_uscore_save_LIBS
896    ])
897  fi
898fi
899
900if test yes = "$libltdl_cv_need_uscore"; then
901  AC_DEFINE([NEED_USCORE], [1],
902    [Define if dlsym() requires a leading underscore in symbol names.])
903fi
904])# LT_FUNC_DLSYM_USCORE
905
906# Old name:
907AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
908dnl aclocal-1.4 backwards compatibility:
909dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])
Note: See TracBrowser for help on using the repository browser.