aclocal.m4

   1 # generated automatically by aclocal 1.16.5 -*- Autoconf -*-
   2
   3 # Copyright (C) 1996-2021 Free Software Foundation, Inc.
   4
   5 # This file is free software; the Free Software Foundation
   6 # gives unlimited permission to copy and/or distribute it,
   7 # with or without modifications, as long as this notice is preserved.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
  11 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  12 # PARTICULAR PURPOSE.
  13
  14 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
  15 # ===============================================================================
  16 #  https://www.gnu.org/software/autoconf-archive/ax_c_float_words_bigendian.html
  17 # ===============================================================================
  18 #
  19 # SYNOPSIS
  20 #
  21 #   AX_C_FLOAT_WORDS_BIGENDIAN([ACTION-IF-TRUE], [ACTION-IF-FALSE], [ACTION-IF-UNKNOWN])
  22 #
  23 # DESCRIPTION
  24 #
  25 #   Checks the ordering of words within a multi-word float. This check is
  26 #   necessary because on some systems (e.g. certain ARM systems), the float
  27 #   word ordering can be different from the byte ordering. In a multi-word
  28 #   float context, "big-endian" implies that the word containing the sign
  29 #   bit is found in the memory location with the lowest address. This
  30 #   implementation was inspired by the AC_C_BIGENDIAN macro in autoconf.
  31 #
  32 #   The endianness is detected by first compiling C code that contains a
  33 #   special double float value, then grepping the resulting object file for
  34 #   certain strings of ASCII values. The double is specially crafted to have
  35 #   a binary representation that corresponds with a simple string. In this
  36 #   implementation, the string "noonsees" was selected because the
  37 #   individual word values ("noon" and "sees") are palindromes, thus making
  38 #   this test byte-order agnostic. If grep finds the string "noonsees" in
  39 #   the object file, the target platform stores float words in big-endian
  40 #   order. If grep finds "seesnoon", float words are in little-endian order.
  41 #   If neither value is found, the user is instructed to specify the
  42 #   ordering.
  43 #
  44 # LICENSE
  45 #
  46 #   Copyright (c) 2008 Daniel Amelang <dan@amelang.net>
  47 #
  48 #   Copying and distribution of this file, with or without modification, are
  49 #   permitted in any medium without royalty provided the copyright notice
  50 #   and this notice are preserved. This file is offered as-is, without any
  51 #   warranty.
  52
  53 #serial 11
  54
  55 AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN],
  56   [AC_CACHE_CHECK(whether float word ordering is bigendian,
  57                   ax_cv_c_float_words_bigendian, [
  58
  59 ax_cv_c_float_words_bigendian=unknown
  60 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
  61
  62 double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
  63
  64 ]])], [
  65
  66 if grep noonsees conftest.$ac_objext >/dev/null ; then
  67   ax_cv_c_float_words_bigendian=yes
  68 fi
  69 if grep seesnoon conftest.$ac_objext >/dev/null ; then
  70   if test "$ax_cv_c_float_words_bigendian" = unknown; then
  71     ax_cv_c_float_words_bigendian=no
  72   else
  73     ax_cv_c_float_words_bigendian=unknown
  74   fi
  75 fi
  76
  77 ])])
  78
  79 case $ax_cv_c_float_words_bigendian in
  80   yes)
  81     m4_default([$1],
  82       [AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
  83                  [Define to 1 if your system stores words within floats
  84                   with the most significant word first])]) ;;
  85   no)
  86     $2 ;;
  87   *)
  88     m4_default([$3],
  89       [AC_MSG_ERROR([
  90
  91 Unknown float word ordering. You need to manually preset
  92 ax_cv_c_float_words_bigendian=no (or yes) according to your system.
  93
  94     ])]) ;;
  95 esac
  96
  97 ])# AX_C_FLOAT_WORDS_BIGENDIAN
  98
  99 # ===========================================================================
 100 #  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
 101 # ===========================================================================
 102 #
 103 # SYNOPSIS
 104 #
 105 #   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
 106 #
 107 # DESCRIPTION
 108 #
 109 #   Check whether the given FLAG works with the current language's compiler
 110 #   or gives an error.  (Warnings, however, are ignored)
 111 #
 112 #   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
 113 #   success/failure.
 114 #
 115 #   If EXTRA-FLAGS is defined, it is added to the current language's default
 116 #   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
 117 #   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
 118 #   force the compiler to issue an error when a bad flag is given.
 119 #
 120 #   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
 121 #
 122 #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
 123 #   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
 124 #
 125 # LICENSE
 126 #
 127 #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
 128 #   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
 129 #
 130 #   Copying and distribution of this file, with or without modification, are
 131 #   permitted in any medium without royalty provided the copyright notice
 132 #   and this notice are preserved.  This file is offered as-is, without any
 133 #   warranty.
 134
 135 #serial 6
 136
 137 AC_DEFUN([AX_CHECK_COMPILE_FLAG],
 138 [AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
 139 AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
 140 AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
 141   ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
 142   _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
 143   AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
 144     [AS_VAR_SET(CACHEVAR,[yes])],
 145     [AS_VAR_SET(CACHEVAR,[no])])
 146   _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
 147 AS_VAR_IF(CACHEVAR,yes,
 148   [m4_default([$2], :)],
 149   [m4_default([$3], :)])
 150 AS_VAR_POPDEF([CACHEVAR])dnl
 151 ])dnl AX_CHECK_COMPILE_FLAGS
 152
 153 # ===========================================================================
 154 #     https://www.gnu.org/software/autoconf-archive/ax_check_define.html
 155 # ===========================================================================
 156 #
 157 # SYNOPSIS
 158 #
 159 #   AC_CHECK_DEFINE([symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT])
 160 #   AX_CHECK_DEFINE([includes],[symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT])
 161 #
 162 # DESCRIPTION
 163 #
 164 #   Complements AC_CHECK_FUNC but it does not check for a function but for a
 165 #   define to exist. Consider a usage like:
 166 #
 167 #    AC_CHECK_DEFINE(__STRICT_ANSI__, CFLAGS="$CFLAGS -D_XOPEN_SOURCE=500")
 168 #
 169 # LICENSE
 170 #
 171 #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
 172 #
 173 #   Copying and distribution of this file, with or without modification, are
 174 #   permitted in any medium without royalty provided the copyright notice
 175 #   and this notice are preserved.  This file is offered as-is, without any
 176 #   warranty.
 177
 178 #serial 11
 179
 180 AU_ALIAS([AC_CHECK_DEFINED], [AC_CHECK_DEFINE])
 181 AC_DEFUN([AC_CHECK_DEFINE],[
 182 AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$1])dnl
 183 AC_CACHE_CHECK([for $1 defined], ac_var,
 184 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
 185   #ifdef $1
 186   int ok;
 187   (void)ok;
 188   #else
 189   choke me
 190   #endif
 191 ]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)]))
 192 AS_IF([test AS_VAR_GET(ac_var) != "no"], [$2], [$3])dnl
 193 AS_VAR_POPDEF([ac_var])dnl
 194 ])
 195
 196 AU_ALIAS([AX_CHECK_DEFINED], [AX_CHECK_DEFINE])
 197 AC_DEFUN([AX_CHECK_DEFINE],[
 198 AS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$2_$1])dnl
 199 AC_CACHE_CHECK([for $2 defined in $1], ac_var,
 200 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <$1>]], [[
 201   #ifdef $2
 202   int ok;
 203   (void)ok;
 204   #else
 205   choke me
 206   #endif
 207 ]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)]))
 208 AS_IF([test AS_VAR_GET(ac_var) != "no"], [$3], [$4])dnl
 209 AS_VAR_POPDEF([ac_var])dnl
 210 ])
 211
 212 AC_DEFUN([AX_CHECK_FUNC],
 213 [AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$2])dnl
 214 AC_CACHE_CHECK([for $2], ac_var,
 215 dnl AC_LANG_FUNC_LINK_TRY
 216 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$1
 217                 #undef $2
 218                 char $2 ();],[
 219                 char (*f) () = $2;
 220                 return f != $2; ])],
 221                 [AS_VAR_SET(ac_var, yes)],
 222                 [AS_VAR_SET(ac_var, no)])])
 223 AS_IF([test AS_VAR_GET(ac_var) = yes], [$3], [$4])dnl
 224 AS_VAR_POPDEF([ac_var])dnl
 225 ])# AC_CHECK_FUNC
 226
 227 # ===========================================================================
 228 #     https://www.gnu.org/software/autoconf-archive/ax_check_openssl.html
 229 # ===========================================================================
 230 #
 231 # SYNOPSIS
 232 #
 233 #   AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]])
 234 #
 235 # DESCRIPTION
 236 #
 237 #   Look for OpenSSL in a number of default spots, or in a user-selected
 238 #   spot (via --with-openssl).  Sets
 239 #
 240 #     OPENSSL_INCLUDES to the include directives required
 241 #     OPENSSL_LIBS to the -l directives required
 242 #     OPENSSL_LDFLAGS to the -L or -R flags required
 243 #
 244 #   and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
 245 #
 246 #   This macro sets OPENSSL_INCLUDES such that source files should use the
 247 #   openssl/ directory in include directives:
 248 #
 249 #     #include <openssl/hmac.h>
 250 #
 251 # LICENSE
 252 #
 253 #   Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/>
 254 #   Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com>
 255 #
 256 #   Copying and distribution of this file, with or without modification, are
 257 #   permitted in any medium without royalty provided the copyright notice
 258 #   and this notice are preserved. This file is offered as-is, without any
 259 #   warranty.
 260
 261 #serial 11
 262
 263 AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
 264 AC_DEFUN([AX_CHECK_OPENSSL], [
 265     found=false
 266     AC_ARG_WITH([openssl],
 267         [AS_HELP_STRING([--with-openssl=DIR],
 268             [root of the OpenSSL directory])],
 269         [
 270             case "$withval" in
 271             "" | y | ye | yes | n | no)
 272             AC_MSG_ERROR([Invalid --with-openssl value])
 273               ;;
 274             *) ssldirs="$withval"
 275               ;;
 276             esac
 277         ], [
 278             # if pkg-config is installed and openssl has installed a .pc file,
 279             # then use that information and don't search ssldirs
 280             AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])
 281             if test x"$PKG_CONFIG" != x""; then
 282                 OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null`
 283                 if test $? = 0; then
 284                     OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null`
 285                     OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null`
 286                     found=true
 287                 fi
 288             fi
 289
 290             # no such luck; use some default ssldirs
 291             if ! $found; then
 292                 ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
 293             fi
 294         ]
 295         )
 296
 297
 298     # note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in
 299     # an 'openssl' subdirectory
 300
 301     if ! $found; then
 302         OPENSSL_INCLUDES=
 303         for ssldir in $ssldirs; do
 304             AC_MSG_CHECKING([for include/openssl/ssl.h in $ssldir])
 305             if test -f "$ssldir/include/openssl/ssl.h"; then
 306                 OPENSSL_INCLUDES="-I$ssldir/include"
 307                 OPENSSL_LDFLAGS="-L$ssldir/lib"
 308                 OPENSSL_LIBS="-lssl -lcrypto"
 309                 found=true
 310                 AC_MSG_RESULT([yes])
 311                 break
 312             else
 313                 AC_MSG_RESULT([no])
 314             fi
 315         done
 316
 317         # if the file wasn't found, well, go ahead and try the link anyway -- maybe
 318         # it will just work!
 319     fi
 320
 321     # try the preprocessor and linker with our new flags,
 322     # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
 323
 324     AC_MSG_CHECKING([whether compiling and linking against OpenSSL works])
 325     echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \
 326         "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD
 327
 328     save_LIBS="$LIBS"
 329     save_LDFLAGS="$LDFLAGS"
 330     save_CPPFLAGS="$CPPFLAGS"
 331     LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS"
 332     LIBS="$OPENSSL_LIBS $LIBS"
 333     CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS"
 334     AC_LINK_IFELSE(
 335         [AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])],
 336         [
 337             AC_MSG_RESULT([yes])
 338             $1
 339         ], [
 340             AC_MSG_RESULT([no])
 341             $2
 342         ])
 343     CPPFLAGS="$save_CPPFLAGS"
 344     LDFLAGS="$save_LDFLAGS"
 345     LIBS="$save_LIBS"
 346
 347     AC_SUBST([OPENSSL_INCLUDES])
 348     AC_SUBST([OPENSSL_LIBS])
 349     AC_SUBST([OPENSSL_LDFLAGS])
 350 ])
 351
 352 # pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
 353 # serial 12 (pkg-config-0.29.2)
 354
 355 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
 356 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
 357 dnl
 358 dnl This program is free software; you can redistribute it and/or modify
 359 dnl it under the terms of the GNU General Public License as published by
 360 dnl the Free Software Foundation; either version 2 of the License, or
 361 dnl (at your option) any later version.
 362 dnl
 363 dnl This program is distributed in the hope that it will be useful, but
 364 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
 365 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 366 dnl General Public License for more details.
 367 dnl
 368 dnl You should have received a copy of the GNU General Public License
 369 dnl along with this program; if not, write to the Free Software
 370 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 371 dnl 02111-1307, USA.
 372 dnl
 373 dnl As a special exception to the GNU General Public License, if you
 374 dnl distribute this file as part of a program that contains a
 375 dnl configuration script generated by Autoconf, you may include it under
 376 dnl the same distribution terms that you use for the rest of that
 377 dnl program.
 378
 379 dnl PKG_PREREQ(MIN-VERSION)
 380 dnl -----------------------
 381 dnl Since: 0.29
 382 dnl
 383 dnl Verify that the version of the pkg-config macros are at least
 384 dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
 385 dnl installed version of pkg-config, this checks the developer's version
 386 dnl of pkg.m4 when generating configure.
 387 dnl
 388 dnl To ensure that this macro is defined, also add:
 389 dnl m4_ifndef([PKG_PREREQ],
 390 dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
 391 dnl
 392 dnl See the "Since" comment for each macro you use to see what version
 393 dnl of the macros you require.
 394 m4_defun([PKG_PREREQ],
 395 [m4_define([PKG_MACROS_VERSION], [0.29.2])
 396 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
 397     [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
 398 ])dnl PKG_PREREQ
 399
 400 dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
 401 dnl ----------------------------------
 402 dnl Since: 0.16
 403 dnl
 404 dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
 405 dnl first found in the path. Checks that the version of pkg-config found
 406 dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
 407 dnl used since that's the first version where most current features of
 408 dnl pkg-config existed.
 409 AC_DEFUN([PKG_PROG_PKG_CONFIG],
 410 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
 411 m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
 412 m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
 413 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
 414 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
 415 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
 416
 417 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
 418         AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
 419 fi
 420 if test -n "$PKG_CONFIG"; then
 421         _pkg_min_version=m4_default([$1], [0.9.0])
 422         AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
 423         if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
 424                 AC_MSG_RESULT([yes])
 425         else
 426                 AC_MSG_RESULT([no])
 427                 PKG_CONFIG=""
 428         fi
 429 fi[]dnl
 430 ])dnl PKG_PROG_PKG_CONFIG
 431
 432 dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 433 dnl -------------------------------------------------------------------
 434 dnl Since: 0.18
 435 dnl
 436 dnl Check to see whether a particular set of modules exists. Similar to
 437 dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
 438 dnl
 439 dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
 440 dnl only at the first occurence in configure.ac, so if the first place
 441 dnl it's called might be skipped (such as if it is within an "if", you
 442 dnl have to call PKG_CHECK_EXISTS manually
 443 AC_DEFUN([PKG_CHECK_EXISTS],
 444 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
 445 if test -n "$PKG_CONFIG" && \
 446     AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
 447   m4_default([$2], [:])
 448 m4_ifvaln([$3], [else
 449   $3])dnl
 450 fi])
 451
 452 dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
 453 dnl ---------------------------------------------
 454 dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
 455 dnl pkg_failed based on the result.
 456 m4_define([_PKG_CONFIG],
 457 [if test -n "$$1"; then
 458     pkg_cv_[]$1="$$1"
 459  elif test -n "$PKG_CONFIG"; then
 460     PKG_CHECK_EXISTS([$3],
 461                      [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
 462                       test "x$?" != "x0" && pkg_failed=yes ],
 463                      [pkg_failed=yes])
 464  else
 465     pkg_failed=untried
 466 fi[]dnl
 467 ])dnl _PKG_CONFIG
 468
 469 dnl _PKG_SHORT_ERRORS_SUPPORTED
 470 dnl ---------------------------
 471 dnl Internal check to see if pkg-config supports short errors.
 472 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
 473 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
 474 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
 475         _pkg_short_errors_supported=yes
 476 else
 477         _pkg_short_errors_supported=no
 478 fi[]dnl
 479 ])dnl _PKG_SHORT_ERRORS_SUPPORTED
 480
 481
 482 dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
 483 dnl   [ACTION-IF-NOT-FOUND])
 484 dnl --------------------------------------------------------------
 485 dnl Since: 0.4.0
 486 dnl
 487 dnl Note that if there is a possibility the first call to
 488 dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
 489 dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
 490 AC_DEFUN([PKG_CHECK_MODULES],
 491 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
 492 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
 493 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
 494
 495 pkg_failed=no
 496 AC_MSG_CHECKING([for $2])
 497
 498 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
 499 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
 500
 501 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
 502 and $1[]_LIBS to avoid the need to call pkg-config.
 503 See the pkg-config man page for more details.])
 504
 505 if test $pkg_failed = yes; then
 506         AC_MSG_RESULT([no])
 507         _PKG_SHORT_ERRORS_SUPPORTED
 508         if test $_pkg_short_errors_supported = yes; then
 509                 $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
 510         else
 511                 $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
 512         fi
 513         # Put the nasty error message in config.log where it belongs
 514         echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
 515
 516         m4_default([$4], [AC_MSG_ERROR(
 517 [Package requirements ($2) were not met:
 518
 519 $$1_PKG_ERRORS
 520
 521 Consider adjusting the PKG_CONFIG_PATH environment variable if you
 522 installed software in a non-standard prefix.
 523
 524 _PKG_TEXT])[]dnl
 525         ])
 526 elif test $pkg_failed = untried; then
 527         AC_MSG_RESULT([no])
 528         m4_default([$4], [AC_MSG_FAILURE(
 529 [The pkg-config script could not be found or is too old.  Make sure it
 530 is in your PATH or set the PKG_CONFIG environment variable to the full
 531 path to pkg-config.
 532
 533 _PKG_TEXT
 534
 535 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
 536         ])
 537 else
 538         $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
 539         $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
 540         AC_MSG_RESULT([yes])
 541         $3
 542 fi[]dnl
 543 ])dnl PKG_CHECK_MODULES
 544
 545
 546 dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
 547 dnl   [ACTION-IF-NOT-FOUND])
 548 dnl ---------------------------------------------------------------------
 549 dnl Since: 0.29
 550 dnl
 551 dnl Checks for existence of MODULES and gathers its build flags with
 552 dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
 553 dnl and VARIABLE-PREFIX_LIBS from --libs.
 554 dnl
 555 dnl Note that if there is a possibility the first call to
 556 dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
 557 dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
 558 dnl configure.ac.
 559 AC_DEFUN([PKG_CHECK_MODULES_STATIC],
 560 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
 561 _save_PKG_CONFIG=$PKG_CONFIG
 562 PKG_CONFIG="$PKG_CONFIG --static"
 563 PKG_CHECK_MODULES($@)
 564 PKG_CONFIG=$_save_PKG_CONFIG[]dnl
 565 ])dnl PKG_CHECK_MODULES_STATIC
 566
 567
 568 dnl PKG_INSTALLDIR([DIRECTORY])
 569 dnl -------------------------
 570 dnl Since: 0.27
 571 dnl
 572 dnl Substitutes the variable pkgconfigdir as the location where a module
 573 dnl should install pkg-config .pc files. By default the directory is
 574 dnl $libdir/pkgconfig, but the default can be changed by passing
 575 dnl DIRECTORY. The user can override through the --with-pkgconfigdir
 576 dnl parameter.
 577 AC_DEFUN([PKG_INSTALLDIR],
 578 [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
 579 m4_pushdef([pkg_description],
 580     [pkg-config installation directory @<:@]pkg_default[@:>@])
 581 AC_ARG_WITH([pkgconfigdir],
 582     [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
 583     [with_pkgconfigdir=]pkg_default)
 584 AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
 585 m4_popdef([pkg_default])
 586 m4_popdef([pkg_description])
 587 ])dnl PKG_INSTALLDIR
 588
 589
 590 dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
 591 dnl --------------------------------
 592 dnl Since: 0.27
 593 dnl
 594 dnl Substitutes the variable noarch_pkgconfigdir as the location where a
 595 dnl module should install arch-independent pkg-config .pc files. By
 596 dnl default the directory is $datadir/pkgconfig, but the default can be
 597 dnl changed by passing DIRECTORY. The user can override through the
 598 dnl --with-noarch-pkgconfigdir parameter.
 599 AC_DEFUN([PKG_NOARCH_INSTALLDIR],
 600 [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
 601 m4_pushdef([pkg_description],
 602     [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
 603 AC_ARG_WITH([noarch-pkgconfigdir],
 604     [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
 605     [with_noarch_pkgconfigdir=]pkg_default)
 606 AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
 607 m4_popdef([pkg_default])
 608 m4_popdef([pkg_description])
 609 ])dnl PKG_NOARCH_INSTALLDIR
 610
 611
 612 dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
 613 dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 614 dnl -------------------------------------------
 615 dnl Since: 0.28
 616 dnl
 617 dnl Retrieves the value of the pkg-config variable for the given module.
 618 AC_DEFUN([PKG_CHECK_VAR],
 619 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
 620 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
 621
 622 _PKG_CONFIG([$1], [variable="][$3]["], [$2])
 623 AS_VAR_COPY([$1], [pkg_cv_][$1])
 624
 625 AS_VAR_IF([$1], [""], [$5], [$4])dnl
 626 ])dnl PKG_CHECK_VAR
 627
 628 # AM_CONDITIONAL                                            -*- Autoconf -*-
 629
 630 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
 631 #
 632 # This file is free software; the Free Software Foundation
 633 # gives unlimited permission to copy and/or distribute it,
 634 # with or without modifications, as long as this notice is preserved.
 635
 636 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
 637 # -------------------------------------
 638 # Define a conditional.
 639 AC_DEFUN([AM_CONDITIONAL],
 640 [AC_PREREQ([2.52])dnl
 641  m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
 642        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
 643 AC_SUBST([$1_TRUE])dnl
 644 AC_SUBST([$1_FALSE])dnl
 645 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
 646 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
 647 m4_define([_AM_COND_VALUE_$1], [$2])dnl
 648 if $2; then
 649   $1_TRUE=
 650   $1_FALSE='#'
 651 else
 652   $1_TRUE='#'
 653   $1_FALSE=
 654 fi
 655 AC_CONFIG_COMMANDS_PRE(
 656 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
 657   AC_MSG_ERROR([[conditional "$1" was never defined.
 658 Usually this means the macro was only invoked conditionally.]])
 659 fi])])
 660
 661 # Copyright (C) 2006-2021 Free Software Foundation, Inc.
 662 #
 663 # This file is free software; the Free Software Foundation
 664 # gives unlimited permission to copy and/or distribute it,
 665 # with or without modifications, as long as this notice is preserved.
 666
 667 # _AM_SUBST_NOTMAKE(VARIABLE)
 668 # ---------------------------
 669 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 670 # This macro is traced by Automake.
 671 AC_DEFUN([_AM_SUBST_NOTMAKE])
 672
 673 # AM_SUBST_NOTMAKE(VARIABLE)
 674 # --------------------------
 675 # Public sister of _AM_SUBST_NOTMAKE.
 676 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 677