looper/subprojects/mpg123/aclocal.m4
2024-09-28 10:31:18 -07:00

2361 lines
82 KiB
Text

# generated automatically by aclocal 1.16.5 -*- Autoconf -*-
# Copyright (C) 1996-2021 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
m4_ifndef([AC_AUTOCONF_VERSION],
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m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.71],,
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You have another version of autoconf. It may work, but is not guaranteed to.
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# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
#
# Copyright (C) 1999-2008, 2011-2015 Free Software Foundation, Inc.
# Written by Thomas Tanner, 1999
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
# serial 20 LTDL_INIT
# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
# ------------------------------------------
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_$0($*)
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dnl aclocal-1.4 backwards compatibility:
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# _LTDL_CONVENIENCE
# -----------------
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"") enable_ltdl_convenience=yes
ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
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AC_SUBST([LTDLINCL])
# For backwards non-gettext consistent compatibility...
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dnl aclocal-1.4 backwards compatibility:
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# _LTDL_INSTALLABLE
# -----------------
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;;
esac
AC_SUBST([LIBLTDL])
AC_SUBST([LTDLDEPS])
AC_SUBST([LTDLINCL])
# For backwards non-gettext consistent compatibility...
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# _LTDL_MODE_DISPATCH
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[subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
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[nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir=$lt_ltdl_dir; lt_libobj_prefix=$lt_ltdl_dir/])],
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[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
dnl Be careful not to expand twice:
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[with_included_ltdl=yes],
[AC_INCLUDES_DEFAULT]
)
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dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
dnl was called yet, then for old times' sake, we assume libltdl is in an
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AC_MSG_ERROR([invalid ltdl include directory: '$with_ltdl_include'])
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with_ltdl_include=no
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;;
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# If the included ltdl is not to be used, then use the
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,no*,no,*)
AC_MSG_ERROR(['--with-ltdl-include' and '--with-ltdl-lib' options must be used together])
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*) with_included_ltdl=no
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LTDLDEPS=
LTDLINCL=-I$with_ltdl_include
;;
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INCLTDL=$LTDLINCL
# Report our decision...
AC_MSG_CHECKING([where to find libltdl headers])
AC_MSG_RESULT([$LTDLINCL])
AC_MSG_CHECKING([where to find libltdl library])
AC_MSG_RESULT([$LIBLTDL])
_LTDL_SETUP
dnl restore autoconf definition.
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m4_popdef([AC_LIBSOURCES])
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# Only expand once:
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AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIB_LTDL], [])
dnl AC_DEFUN([AC_WITH_LTDL], [])
dnl AC_DEFUN([LT_WITH_LTDL], [])
# _LTDL_SETUP
# -----------
# Perform all the checks necessary for compilation of the ltdl objects
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# interface mainly for the benefit of libltdl's own configure.ac, most
# other users should call LTDL_INIT instead.
AC_DEFUN([_LTDL_SETUP],
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AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
AC_REQUIRE([LT_LIB_DLLOAD])dnl
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
AC_REQUIRE([LT_FUNC_ARGZ])dnl
m4_require([_LT_CHECK_OBJDIR])dnl
m4_require([_LT_HEADER_DLFCN])dnl
m4_require([_LT_CHECK_DLPREOPEN])dnl
m4_require([_LT_DECL_SED])dnl
dnl Don't require this, or it will be expanded earlier than the code
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_LT_ENABLE_INSTALL
dnl _LTDL_MODE specific code must be called at least once:
_LTDL_MODE_DISPATCH
# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
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name=
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m4_pattern_allow([LT_LIBPREFIX])dnl
AC_DEFINE_UNQUOTED([LT_LIBPREFIX],["$lt_libprefix"],[The archive prefix])
name=ltdl
eval "LTDLOPEN=\"$libname_spec\""
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case ,$enable_ltdl_install,$enable_ltdl_convenience in
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*) enable_ltdl_convenience=yes ;;
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# LT_SYS_DLOPEN_DEPLIBS
# ---------------------
AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
[lt_cv_sys_dlopen_deplibs],
[# PORTME does your system automatically load deplibs for dlopen?
# or its logical equivalent (e.g. shl_load for HP-UX < 11)
# For now, we just catch OSes we know something about -- in the
# future, we'll try test this programmatically.
lt_cv_sys_dlopen_deplibs=unknown
case $host_os in
aix3*|aix4.1.*|aix4.2.*)
# Unknown whether this is true for these versions of AIX, but
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lt_cv_sys_dlopen_deplibs=unknown
;;
aix[[4-9]]*)
lt_cv_sys_dlopen_deplibs=yes
;;
amigaos*)
case $host_cpu in
powerpc)
lt_cv_sys_dlopen_deplibs=no
;;
esac
;;
bitrig*)
lt_cv_sys_dlopen_deplibs=yes
;;
darwin*)
# Assuming the user has installed a libdl from somewhere, this is true
# If you are looking for one http://www.opendarwin.org/projects/dlcompat
lt_cv_sys_dlopen_deplibs=yes
;;
freebsd* | dragonfly*)
lt_cv_sys_dlopen_deplibs=yes
;;
gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu)
# GNU and its variants, using gnu ld.so (Glibc)
lt_cv_sys_dlopen_deplibs=yes
;;
hpux10*|hpux11*)
lt_cv_sys_dlopen_deplibs=yes
;;
interix*)
lt_cv_sys_dlopen_deplibs=yes
;;
irix[[12345]]*|irix6.[[01]]*)
# Catch all versions of IRIX before 6.2, and indicate that we don't
# know how it worked for any of those versions.
lt_cv_sys_dlopen_deplibs=unknown
;;
irix*)
# The case above catches anything before 6.2, and it's known that
# at 6.2 and later dlopen does load deplibs.
lt_cv_sys_dlopen_deplibs=yes
;;
netbsd* | netbsdelf*-gnu)
lt_cv_sys_dlopen_deplibs=yes
;;
openbsd*)
lt_cv_sys_dlopen_deplibs=yes
;;
osf[[1234]]*)
# dlopen did load deplibs (at least at 4.x), but until the 5.x series,
# it did *not* use an RPATH in a shared library to find objects the
# library depends on, so we explicitly say 'no'.
lt_cv_sys_dlopen_deplibs=no
;;
osf5.0|osf5.0a|osf5.1)
# dlopen *does* load deplibs and with the right loader patch applied
# it even uses RPATH in a shared library to search for shared objects
# that the library depends on, but there's no easy way to know if that
# patch is installed. Since this is the case, all we can really
# say is unknown -- it depends on the patch being installed. If
# it is, this changes to 'yes'. Without it, it would be 'no'.
lt_cv_sys_dlopen_deplibs=unknown
;;
osf*)
# the two cases above should catch all versions of osf <= 5.1. Read
# the comments above for what we know about them.
# At > 5.1, deplibs are loaded *and* any RPATH in a shared library
# is used to find them so we can finally say 'yes'.
lt_cv_sys_dlopen_deplibs=yes
;;
qnx*)
lt_cv_sys_dlopen_deplibs=yes
;;
solaris*)
lt_cv_sys_dlopen_deplibs=yes
;;
sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
libltdl_cv_sys_dlopen_deplibs=yes
;;
esac
])
if test yes != "$lt_cv_sys_dlopen_deplibs"; then
AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
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fi
])# LT_SYS_DLOPEN_DEPLIBS
# Old name:
AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
# LT_SYS_MODULE_EXT
# -----------------
AC_DEFUN([LT_SYS_MODULE_EXT],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([what extension is used for runtime loadable modules],
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[
module=yes
eval libltdl_cv_shlibext=$shrext_cmds
module=no
eval libltdl_cv_shrext=$shrext_cmds
])
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m4_pattern_allow([LT_MODULE_EXT])dnl
AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
[Define to the extension used for runtime loadable modules, say, ".so".])
fi
if test "$libltdl_cv_shrext" != "$libltdl_cv_shlibext"; then
m4_pattern_allow([LT_SHARED_EXT])dnl
AC_DEFINE_UNQUOTED([LT_SHARED_EXT], ["$libltdl_cv_shrext"],
[Define to the shared library suffix, say, ".dylib".])
fi
if test -n "$shared_archive_member_spec"; then
m4_pattern_allow([LT_SHARED_LIB_MEMBER])dnl
AC_DEFINE_UNQUOTED([LT_SHARED_LIB_MEMBER], ["($shared_archive_member_spec.o)"],
[Define to the shared archive member specification, say "(shr.o)".])
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])# LT_SYS_MODULE_EXT
# Old name:
AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
# LT_SYS_MODULE_PATH
# ------------------
AC_DEFUN([LT_SYS_MODULE_PATH],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([what variable specifies run-time module search path],
[lt_cv_module_path_var], [lt_cv_module_path_var=$shlibpath_var])
if test -n "$lt_cv_module_path_var"; then
m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
[Define to the name of the environment variable that determines the run-time module search path.])
fi
])# LT_SYS_MODULE_PATH
# Old name:
AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
# LT_SYS_DLSEARCH_PATH
# --------------------
AC_DEFUN([LT_SYS_DLSEARCH_PATH],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([for the default library search path],
[lt_cv_sys_dlsearch_path],
[lt_cv_sys_dlsearch_path=$sys_lib_dlsearch_path_spec])
if test -n "$lt_cv_sys_dlsearch_path"; then
sys_dlsearch_path=
for dir in $lt_cv_sys_dlsearch_path; do
if test -z "$sys_dlsearch_path"; then
sys_dlsearch_path=$dir
else
sys_dlsearch_path=$sys_dlsearch_path$PATH_SEPARATOR$dir
fi
done
m4_pattern_allow([LT_DLSEARCH_PATH])dnl
AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
[Define to the system default library search path.])
fi
])# LT_SYS_DLSEARCH_PATH
# Old name:
AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
# _LT_CHECK_DLPREOPEN
# -------------------
m4_defun([_LT_CHECK_DLPREOPEN],
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
[libltdl_cv_preloaded_symbols],
[if test -n "$lt_cv_sys_global_symbol_pipe"; then
libltdl_cv_preloaded_symbols=yes
else
libltdl_cv_preloaded_symbols=no
fi
])
if test yes = "$libltdl_cv_preloaded_symbols"; then
AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
[Define if libtool can extract symbol lists from object files.])
fi
])# _LT_CHECK_DLPREOPEN
# LT_LIB_DLLOAD
# -------------
AC_DEFUN([LT_LIB_DLLOAD],
[m4_pattern_allow([^LT_DLLOADERS$])
LT_DLLOADERS=
AC_SUBST([LT_DLLOADERS])
AC_LANG_PUSH([C])
lt_dlload_save_LIBS=$LIBS
LIBADD_DLOPEN=
AC_SEARCH_LIBS([dlopen], [dl],
[AC_DEFINE([HAVE_LIBDL], [1],
[Define if you have the libdl library or equivalent.])
if test "$ac_cv_search_dlopen" != "none required"; then
LIBADD_DLOPEN=-ldl
fi
libltdl_cv_lib_dl_dlopen=yes
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
# include <dlfcn.h>
#endif
]], [[dlopen(0, 0);]])],
[AC_DEFINE([HAVE_LIBDL], [1],
[Define if you have the libdl library or equivalent.])
libltdl_cv_func_dlopen=yes
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
[AC_CHECK_LIB([svld], [dlopen],
[AC_DEFINE([HAVE_LIBDL], [1],
[Define if you have the libdl library or equivalent.])
LIBADD_DLOPEN=-lsvld libltdl_cv_func_dlopen=yes
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"
then
lt_save_LIBS=$LIBS
LIBS="$LIBS $LIBADD_DLOPEN"
AC_CHECK_FUNCS([dlerror])
LIBS=$lt_save_LIBS
fi
AC_SUBST([LIBADD_DLOPEN])
LIBADD_SHL_LOAD=
AC_CHECK_FUNC([shl_load],
[AC_DEFINE([HAVE_SHL_LOAD], [1],
[Define if you have the shl_load function.])
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
[AC_CHECK_LIB([dld], [shl_load],
[AC_DEFINE([HAVE_SHL_LOAD], [1],
[Define if you have the shl_load function.])
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
LIBADD_SHL_LOAD=-ldld])])
AC_SUBST([LIBADD_SHL_LOAD])
case $host_os in
darwin[[1567]].*)
# We only want this for pre-Mac OS X 10.4.
AC_CHECK_FUNC([_dyld_func_lookup],
[AC_DEFINE([HAVE_DYLD], [1],
[Define if you have the _dyld_func_lookup function.])
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
;;
beos*)
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
;;
cygwin* | mingw* | pw32*)
AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
;;
esac
AC_CHECK_LIB([dld], [dld_link],
[AC_DEFINE([HAVE_DLD], [1],
[Define if you have the GNU dld library.])
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
AC_SUBST([LIBADD_DLD_LINK])
m4_pattern_allow([^LT_DLPREOPEN$])
LT_DLPREOPEN=
if test -n "$LT_DLLOADERS"
then
for lt_loader in $LT_DLLOADERS; do
LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
done
AC_DEFINE([HAVE_LIBDLLOADER], [1],
[Define if libdlloader will be built on this platform])
fi
AC_SUBST([LT_DLPREOPEN])
dnl This isn't used anymore, but set it for backwards compatibility
LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
AC_SUBST([LIBADD_DL])
LIBS=$lt_dlload_save_LIBS
AC_LANG_POP
])# LT_LIB_DLLOAD
# Old name:
AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_DLLIB], [])
# LT_SYS_SYMBOL_USCORE
# --------------------
# does the compiler prefix global symbols with an underscore?
AC_DEFUN([LT_SYS_SYMBOL_USCORE],
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
AC_CACHE_CHECK([for _ prefix in compiled symbols],
[lt_cv_sys_symbol_underscore],
[lt_cv_sys_symbol_underscore=no
cat > conftest.$ac_ext <<_LT_EOF
void nm_test_func(){}
int main(){nm_test_func;return 0;}
_LT_EOF
if AC_TRY_EVAL(ac_compile); then
# Now try to grab the symbols.
ac_nlist=conftest.nm
if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
# See whether the symbols have a leading underscore.
if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
lt_cv_sys_symbol_underscore=yes
else
if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
:
else
echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
fi
fi
else
echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
fi
else
echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
cat conftest.c >&AS_MESSAGE_LOG_FD
fi
rm -rf conftest*
])
sys_symbol_underscore=$lt_cv_sys_symbol_underscore
AC_SUBST([sys_symbol_underscore])
])# LT_SYS_SYMBOL_USCORE
# Old name:
AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
# LT_FUNC_DLSYM_USCORE
# --------------------
AC_DEFUN([LT_FUNC_DLSYM_USCORE],
[AC_REQUIRE([_LT_COMPILER_PIC])dnl for lt_prog_compiler_wl
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl for lt_cv_sys_symbol_underscore
AC_REQUIRE([LT_SYS_MODULE_EXT])dnl for libltdl_cv_shlibext
if test yes = "$lt_cv_sys_symbol_underscore"; then
if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"; then
AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
[libltdl_cv_need_uscore],
[libltdl_cv_need_uscore=unknown
dlsym_uscore_save_LIBS=$LIBS
LIBS="$LIBS $LIBADD_DLOPEN"
libname=conftmod # stay within 8.3 filename limits!
cat >$libname.$ac_ext <<_LT_EOF
[#line $LINENO "configure"
#include "confdefs.h"
/* When -fvisibility=hidden is used, assume the code has been annotated
correspondingly for the symbols needed. */
#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
int fnord () __attribute__((visibility("default")));
#endif
int fnord () { return 42; }]
_LT_EOF
# ltfn_module_cmds module_cmds
# Execute tilde-delimited MODULE_CMDS with environment primed for
# $module_cmds or $archive_cmds type content.
ltfn_module_cmds ()
{( # subshell avoids polluting parent global environment
module_cmds_save_ifs=$IFS; IFS='~'
for cmd in @S|@1; do
IFS=$module_cmds_save_ifs
libobjs=$libname.$ac_objext; lib=$libname$libltdl_cv_shlibext
rpath=/not-exists; soname=$libname$libltdl_cv_shlibext; output_objdir=.
major=; versuffix=; verstring=; deplibs=
ECHO=echo; wl=$lt_prog_compiler_wl; allow_undefined_flag=
eval $cmd
done
IFS=$module_cmds_save_ifs
)}
# Compile a loadable module using libtool macro expansion results.
$CC $pic_flag -c $libname.$ac_ext
ltfn_module_cmds "${module_cmds:-$archive_cmds}"
# Try to fetch fnord with dlsym().
libltdl_dlunknown=0; libltdl_dlnouscore=1; libltdl_dluscore=2
cat >conftest.$ac_ext <<_LT_EOF
[#line $LINENO "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include <stdio.h>
#ifndef RTLD_GLOBAL
# ifdef DL_GLOBAL
# define RTLD_GLOBAL DL_GLOBAL
# else
# define RTLD_GLOBAL 0
# endif
#endif
#ifndef RTLD_NOW
# ifdef DL_NOW
# define RTLD_NOW DL_NOW
# else
# define RTLD_NOW 0
# endif
#endif
int main () {
void *handle = dlopen ("`pwd`/$libname$libltdl_cv_shlibext", RTLD_GLOBAL|RTLD_NOW);
int status = $libltdl_dlunknown;
if (handle) {
if (dlsym (handle, "fnord"))
status = $libltdl_dlnouscore;
else {
if (dlsym (handle, "_fnord"))
status = $libltdl_dluscore;
else
puts (dlerror ());
}
dlclose (handle);
} else
puts (dlerror ());
return status;
}]
_LT_EOF
if AC_TRY_EVAL(ac_link) && test -s "conftest$ac_exeext" 2>/dev/null; then
(./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
libltdl_status=$?
case x$libltdl_status in
x$libltdl_dlnouscore) libltdl_cv_need_uscore=no ;;
x$libltdl_dluscore) libltdl_cv_need_uscore=yes ;;
x*) libltdl_cv_need_uscore=unknown ;;
esac
fi
rm -rf conftest* $libname*
LIBS=$dlsym_uscore_save_LIBS
])
fi
fi
if test yes = "$libltdl_cv_need_uscore"; then
AC_DEFINE([NEED_USCORE], [1],
[Define if dlsym() requires a leading underscore in symbol names.])
fi
])# LT_FUNC_DLSYM_USCORE
# Old name:
AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])
# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
# serial 12 (pkg-config-0.29.2)
dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
dnl 02111-1307, USA.
dnl
dnl As a special exception to the GNU General Public License, if you
dnl distribute this file as part of a program that contains a
dnl configuration script generated by Autoconf, you may include it under
dnl the same distribution terms that you use for the rest of that
dnl program.
dnl PKG_PREREQ(MIN-VERSION)
dnl -----------------------
dnl Since: 0.29
dnl
dnl Verify that the version of the pkg-config macros are at least
dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
dnl installed version of pkg-config, this checks the developer's version
dnl of pkg.m4 when generating configure.
dnl
dnl To ensure that this macro is defined, also add:
dnl m4_ifndef([PKG_PREREQ],
dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
dnl
dnl See the "Since" comment for each macro you use to see what version
dnl of the macros you require.
m4_defun([PKG_PREREQ],
[m4_define([PKG_MACROS_VERSION], [0.29.2])
m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
[m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
])dnl PKG_PREREQ
dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
dnl ----------------------------------
dnl Since: 0.16
dnl
dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
dnl first found in the path. Checks that the version of pkg-config found
dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
dnl used since that's the first version where most current features of
dnl pkg-config existed.
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
_pkg_min_version=m4_default([$1], [0.9.0])
AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
PKG_CONFIG=""
fi
fi[]dnl
])dnl PKG_PROG_PKG_CONFIG
dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------------------------------
dnl Since: 0.18
dnl
dnl Check to see whether a particular set of modules exists. Similar to
dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
dnl
dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
dnl only at the first occurence in configure.ac, so if the first place
dnl it's called might be skipped (such as if it is within an "if", you
dnl have to call PKG_CHECK_EXISTS manually
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
m4_default([$2], [:])
m4_ifvaln([$3], [else
$3])dnl
fi])
dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
dnl ---------------------------------------------
dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
dnl pkg_failed based on the result.
m4_define([_PKG_CONFIG],
[if test -n "$$1"; then
pkg_cv_[]$1="$$1"
elif test -n "$PKG_CONFIG"; then
PKG_CHECK_EXISTS([$3],
[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
test "x$?" != "x0" && pkg_failed=yes ],
[pkg_failed=yes])
else
pkg_failed=untried
fi[]dnl
])dnl _PKG_CONFIG
dnl _PKG_SHORT_ERRORS_SUPPORTED
dnl ---------------------------
dnl Internal check to see if pkg-config supports short errors.
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
_pkg_short_errors_supported=yes
else
_pkg_short_errors_supported=no
fi[]dnl
])dnl _PKG_SHORT_ERRORS_SUPPORTED
dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl [ACTION-IF-NOT-FOUND])
dnl --------------------------------------------------------------
dnl Since: 0.4.0
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
pkg_failed=no
AC_MSG_CHECKING([for $2])
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])
if test $pkg_failed = yes; then
AC_MSG_RESULT([no])
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
else
$1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
fi
# Put the nasty error message in config.log where it belongs
echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
m4_default([$4], [AC_MSG_ERROR(
[Package requirements ($2) were not met:
$$1_PKG_ERRORS
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
_PKG_TEXT])[]dnl
])
elif test $pkg_failed = untried; then
AC_MSG_RESULT([no])
m4_default([$4], [AC_MSG_FAILURE(
[The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.
_PKG_TEXT
To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
])
else
$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
AC_MSG_RESULT([yes])
$3
fi[]dnl
])dnl PKG_CHECK_MODULES
dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl [ACTION-IF-NOT-FOUND])
dnl ---------------------------------------------------------------------
dnl Since: 0.29
dnl
dnl Checks for existence of MODULES and gathers its build flags with
dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
dnl and VARIABLE-PREFIX_LIBS from --libs.
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
dnl configure.ac.
AC_DEFUN([PKG_CHECK_MODULES_STATIC],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
_save_PKG_CONFIG=$PKG_CONFIG
PKG_CONFIG="$PKG_CONFIG --static"
PKG_CHECK_MODULES($@)
PKG_CONFIG=$_save_PKG_CONFIG[]dnl
])dnl PKG_CHECK_MODULES_STATIC
dnl PKG_INSTALLDIR([DIRECTORY])
dnl -------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable pkgconfigdir as the location where a module
dnl should install pkg-config .pc files. By default the directory is
dnl $libdir/pkgconfig, but the default can be changed by passing
dnl DIRECTORY. The user can override through the --with-pkgconfigdir
dnl parameter.
AC_DEFUN([PKG_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
m4_pushdef([pkg_description],
[pkg-config installation directory @<:@]pkg_default[@:>@])
AC_ARG_WITH([pkgconfigdir],
[AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
[with_pkgconfigdir=]pkg_default)
AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_INSTALLDIR
dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
dnl --------------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable noarch_pkgconfigdir as the location where a
dnl module should install arch-independent pkg-config .pc files. By
dnl default the directory is $datadir/pkgconfig, but the default can be
dnl changed by passing DIRECTORY. The user can override through the
dnl --with-noarch-pkgconfigdir parameter.
AC_DEFUN([PKG_NOARCH_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
m4_pushdef([pkg_description],
[pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
AC_ARG_WITH([noarch-pkgconfigdir],
[AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
[with_noarch_pkgconfigdir=]pkg_default)
AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_NOARCH_INSTALLDIR
dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------
dnl Since: 0.28
dnl
dnl Retrieves the value of the pkg-config variable for the given module.
AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])
AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR
# Copyright (C) 2002-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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