1#--------------------------------------------------------------------------- 2# 3# zz40-xc-ovr.m4 4# 5# Copyright (C) Daniel Stenberg <daniel@haxx.se> 6# 7# Permission to use, copy, modify, and distribute this software for any 8# purpose with or without fee is hereby granted, provided that the above 9# copyright notice and this permission notice appear in all copies. 10# 11# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18# 19# SPDX-License-Identifier: ISC 20# 21#--------------------------------------------------------------------------- 22 23dnl The funny name of this file is intentional in order to make it 24dnl sort alphabetically after any libtool, autoconf or automake 25dnl provided .m4 macro file that might get copied into this same 26dnl subdirectory. This allows that macro (re)definitions from this 27dnl file may override those provided in other files. 28 29 30dnl Version macros 31dnl ------------------------------------------------- 32dnl Public macros. 33 34m4_define([XC_CONFIGURE_PREAMBLE_VER_MAJOR],[1])dnl 35m4_define([XC_CONFIGURE_PREAMBLE_VER_MINOR],[0])dnl 36 37 38dnl _XC_CFG_PRE_PREAMBLE 39dnl ------------------------------------------------- 40dnl Private macro. 41 42AC_DEFUN([_XC_CFG_PRE_PREAMBLE], 43[ 44## -------------------------------- ## 45@%:@@%:@ [XC_CONFIGURE_PREAMBLE] ver: []dnl 46XC_CONFIGURE_PREAMBLE_VER_MAJOR.[]dnl 47XC_CONFIGURE_PREAMBLE_VER_MINOR ## 48## -------------------------------- ## 49 50xc_configure_preamble_ver_major='XC_CONFIGURE_PREAMBLE_VER_MAJOR' 51xc_configure_preamble_ver_minor='XC_CONFIGURE_PREAMBLE_VER_MINOR' 52 53# 54# Set IFS to space, tab and newline. 55# 56 57xc_space=' ' 58xc_tab=' ' 59xc_newline=' 60' 61IFS="$xc_space$xc_tab$xc_newline" 62 63# 64# Set internationalization behavior variables. 65# 66 67LANG='C' 68LC_ALL='C' 69LANGUAGE='C' 70export LANG 71export LC_ALL 72export LANGUAGE 73 74# 75# Some useful variables. 76# 77 78xc_msg_warn='configure: WARNING:' 79xc_msg_abrt='Can not continue.' 80xc_msg_err='configure: error:' 81]) 82 83 84dnl _XC_CFG_PRE_BASIC_CHK_CMD_ECHO 85dnl ------------------------------------------------- 86dnl Private macro. 87dnl 88dnl Emits shell code that verifies that 'echo' command 89dnl is available, otherwise aborts execution. 90 91AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO], 92[dnl 93AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl 94# 95# Verify that 'echo' command is available, otherwise abort. 96# 97 98xc_tst_str='unknown' 99(`echo "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success' 100case "x$xc_tst_str" in @%:@ (( 101 xsuccess) 102 : 103 ;; 104 *) 105 # Try built-in echo, and fail. 106 echo "$xc_msg_err 'echo' command not found. $xc_msg_abrt" >&2 107 exit 1 108 ;; 109esac 110]) 111 112 113dnl _XC_CFG_PRE_BASIC_CHK_CMD_TEST 114dnl ------------------------------------------------- 115dnl Private macro. 116dnl 117dnl Emits shell code that verifies that 'test' command 118dnl is available, otherwise aborts execution. 119 120AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_TEST], 121[dnl 122AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl 123# 124# Verify that 'test' command is available, otherwise abort. 125# 126 127xc_tst_str='unknown' 128(`test -n "$xc_tst_str" >/dev/null 2>&1`) && xc_tst_str='success' 129case "x$xc_tst_str" in @%:@ (( 130 xsuccess) 131 : 132 ;; 133 *) 134 echo "$xc_msg_err 'test' command not found. $xc_msg_abrt" >&2 135 exit 1 136 ;; 137esac 138]) 139 140 141dnl _XC_CFG_PRE_BASIC_CHK_VAR_PATH 142dnl ------------------------------------------------- 143dnl Private macro. 144dnl 145dnl Emits shell code that verifies that 'PATH' variable 146dnl is set, otherwise aborts execution. 147 148AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_VAR_PATH], 149[dnl 150AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl 151# 152# Verify that 'PATH' variable is set, otherwise abort. 153# 154 155xc_tst_str='unknown' 156(`test -n "$PATH" >/dev/null 2>&1`) && xc_tst_str='success' 157case "x$xc_tst_str" in @%:@ (( 158 xsuccess) 159 : 160 ;; 161 *) 162 echo "$xc_msg_err 'PATH' variable not set. $xc_msg_abrt" >&2 163 exit 1 164 ;; 165esac 166]) 167 168 169dnl _XC_CFG_PRE_BASIC_CHK_CMD_EXPR 170dnl ------------------------------------------------- 171dnl Private macro. 172dnl 173dnl Emits shell code that verifies that 'expr' command 174dnl is available, otherwise aborts execution. 175 176AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR], 177[dnl 178AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 179# 180# Verify that 'expr' command is available, otherwise abort. 181# 182 183xc_tst_str='unknown' 184xc_tst_str=`expr "$xc_tst_str" : '.*' 2>/dev/null` 185case "x$xc_tst_str" in @%:@ (( 186 x7) 187 : 188 ;; 189 *) 190 echo "$xc_msg_err 'expr' command not found. $xc_msg_abrt" >&2 191 exit 1 192 ;; 193esac 194]) 195 196 197dnl _XC_CFG_PRE_BASIC_CHK_UTIL_SED 198dnl ------------------------------------------------- 199dnl Private macro. 200dnl 201dnl Emits shell code that verifies that 'sed' utility 202dnl is found within 'PATH', otherwise aborts execution. 203dnl 204dnl This 'sed' is required in order to allow configure 205dnl script bootstrapping itself. No fancy testing for a 206dnl proper 'sed' this early, that should be done later. 207 208AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_SED], 209[dnl 210AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 211# 212# Verify that 'sed' utility is found within 'PATH', otherwise abort. 213# 214 215xc_tst_str='unknown' 216xc_tst_str=`echo "$xc_tst_str" 2>/dev/null \ 217 | sed -e 's:unknown:success:' 2>/dev/null` 218case "x$xc_tst_str" in @%:@ (( 219 xsuccess) 220 : 221 ;; 222 *) 223 echo "$xc_msg_err 'sed' utility not found in 'PATH'. $xc_msg_abrt" >&2 224 exit 1 225 ;; 226esac 227]) 228 229 230dnl _XC_CFG_PRE_BASIC_CHK_UTIL_GREP 231dnl ------------------------------------------------- 232dnl Private macro. 233dnl 234dnl Emits shell code that verifies that 'grep' utility 235dnl is found within 'PATH', otherwise aborts execution. 236dnl 237dnl This 'grep' is required in order to allow configure 238dnl script bootstrapping itself. No fancy testing for a 239dnl proper 'grep' this early, that should be done later. 240 241AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP], 242[dnl 243AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 244# 245# Verify that 'grep' utility is found within 'PATH', otherwise abort. 246# 247 248xc_tst_str='unknown' 249(`echo "$xc_tst_str" 2>/dev/null \ 250 | grep 'unknown' >/dev/null 2>&1`) && xc_tst_str='success' 251case "x$xc_tst_str" in @%:@ (( 252 xsuccess) 253 : 254 ;; 255 *) 256 echo "$xc_msg_err 'grep' utility not found in 'PATH'. $xc_msg_abrt" >&2 257 exit 1 258 ;; 259esac 260]) 261 262 263dnl _XC_CFG_PRE_BASIC_CHK_UTIL_TR 264dnl ------------------------------------------------- 265dnl Private macro. 266dnl 267dnl Emits shell code that verifies that 'tr' utility 268dnl is found within 'PATH', otherwise aborts execution. 269 270AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_TR], 271[dnl 272AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 273# 274# Verify that 'tr' utility is found within 'PATH', otherwise abort. 275# 276 277xc_tst_str="${xc_tab}98s7u6c5c4e3s2s10" 278xc_tst_str=`echo "$xc_tst_str" 2>/dev/null \ 279 | tr -d "0123456789$xc_tab" 2>/dev/null` 280case "x$xc_tst_str" in @%:@ (( 281 xsuccess) 282 : 283 ;; 284 *) 285 echo "$xc_msg_err 'tr' utility not found in 'PATH'. $xc_msg_abrt" >&2 286 exit 1 287 ;; 288esac 289]) 290 291 292dnl _XC_CFG_PRE_BASIC_CHK_UTIL_WC 293dnl ------------------------------------------------- 294dnl Private macro. 295dnl 296dnl Emits shell code that verifies that 'wc' utility 297dnl is found within 'PATH', otherwise aborts execution. 298 299AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_WC], 300[dnl 301AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_TR])dnl 302# 303# Verify that 'wc' utility is found within 'PATH', otherwise abort. 304# 305 306xc_tst_str='unknown unknown unknown unknown' 307xc_tst_str=`echo "$xc_tst_str" 2>/dev/null \ 308 | wc -w 2>/dev/null | tr -d "$xc_space$xc_tab" 2>/dev/null` 309case "x$xc_tst_str" in @%:@ (( 310 x4) 311 : 312 ;; 313 *) 314 echo "$xc_msg_err 'wc' utility not found in 'PATH'. $xc_msg_abrt" >&2 315 exit 1 316 ;; 317esac 318]) 319 320 321dnl _XC_CFG_PRE_BASIC_CHK_UTIL_CAT 322dnl ------------------------------------------------- 323dnl Private macro. 324dnl 325dnl Emits shell code that verifies that 'cat' utility 326dnl is found within 'PATH', otherwise aborts execution. 327 328AC_DEFUN([_XC_CFG_PRE_BASIC_CHK_UTIL_CAT], 329[dnl 330AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_WC])dnl 331# 332# Verify that 'cat' utility is found within 'PATH', otherwise abort. 333# 334 335xc_tst_str='unknown' 336xc_tst_str=`cat <<_EOT 2>/dev/null \ 337 | wc -l 2>/dev/null | tr -d "$xc_space$xc_tab" 2>/dev/null 338unknown 339unknown 340unknown 341_EOT` 342case "x$xc_tst_str" in @%:@ (( 343 x3) 344 : 345 ;; 346 *) 347 echo "$xc_msg_err 'cat' utility not found in 'PATH'. $xc_msg_abrt" >&2 348 exit 1 349 ;; 350esac 351]) 352 353 354dnl _XC_CFG_PRE_CHECK_PATH_SEPARATOR 355dnl ------------------------------------------------- 356dnl Private macro. 357dnl 358dnl Emits shell code that computes the path separator 359dnl and stores the result in 'PATH_SEPARATOR', unless 360dnl the user has already set it with a non-empty value. 361dnl 362dnl This path separator is the symbol used to separate 363dnl or differentiate paths inside the 'PATH' environment 364dnl variable. 365dnl 366dnl Non-empty user provided 'PATH_SEPARATOR' always 367dnl overrides the auto-detected one. 368 369AC_DEFUN([_XC_CFG_PRE_CHECK_PATH_SEPARATOR], 370[dnl 371AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl 372# 373# Auto-detect and set 'PATH_SEPARATOR', unless it is already non-empty set. 374# 375 376# Directory count in 'PATH' when using a colon separator. 377xc_tst_dirs_col='x' 378xc_tst_prev_IFS=$IFS; IFS=':' 379for xc_tst_dir in $PATH; do 380 IFS=$xc_tst_prev_IFS 381 xc_tst_dirs_col="x$xc_tst_dirs_col" 382done 383IFS=$xc_tst_prev_IFS 384xc_tst_dirs_col=`expr "$xc_tst_dirs_col" : '.*'` 385 386# Directory count in 'PATH' when using a semicolon separator. 387xc_tst_dirs_sem='x' 388xc_tst_prev_IFS=$IFS; IFS=';' 389for xc_tst_dir in $PATH; do 390 IFS=$xc_tst_prev_IFS 391 xc_tst_dirs_sem="x$xc_tst_dirs_sem" 392done 393IFS=$xc_tst_prev_IFS 394xc_tst_dirs_sem=`expr "$xc_tst_dirs_sem" : '.*'` 395 396if test $xc_tst_dirs_sem -eq $xc_tst_dirs_col; then 397 # When both counting methods give the same result we do not want to 398 # chose one over the other, and consider auto-detection not possible. 399 if test -z "$PATH_SEPARATOR"; then 400 # User should provide the correct 'PATH_SEPARATOR' definition. 401 # Until then, guess that it is colon! 402 echo "$xc_msg_warn path separator not determined, guessing colon" >&2 403 PATH_SEPARATOR=':' 404 fi 405else 406 # Separator with the greater directory count is the auto-detected one. 407 if test $xc_tst_dirs_sem -gt $xc_tst_dirs_col; then 408 xc_tst_auto_separator=';' 409 else 410 xc_tst_auto_separator=':' 411 fi 412 if test -z "$PATH_SEPARATOR"; then 413 # Simply use the auto-detected one when not already set. 414 PATH_SEPARATOR=$xc_tst_auto_separator 415 elif test "x$PATH_SEPARATOR" != "x$xc_tst_auto_separator"; then 416 echo "$xc_msg_warn 'PATH_SEPARATOR' does not match auto-detected one." >&2 417 fi 418fi 419xc_PATH_SEPARATOR=$PATH_SEPARATOR 420AC_SUBST([PATH_SEPARATOR])dnl 421]) 422 423 424dnl _XC_CFG_PRE_POSTLUDE 425dnl ------------------------------------------------- 426dnl Private macro. 427 428AC_DEFUN([_XC_CFG_PRE_POSTLUDE], 429[dnl 430AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl 431AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl 432AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl 433AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 434AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl 435AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl 436AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl 437AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_TR])dnl 438AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_WC])dnl 439AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_CAT])dnl 440AC_REQUIRE([_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl 441dnl 442xc_configure_preamble_result='yes' 443]) 444 445 446dnl XC_CONFIGURE_PREAMBLE 447dnl ------------------------------------------------- 448dnl Public macro. 449dnl 450dnl This macro emits shell code which does some 451dnl very basic checks related with the availability 452dnl of some commands and utilities needed to allow 453dnl configure script bootstrapping itself when using 454dnl these to figure out other settings. Also emits 455dnl code that performs PATH_SEPARATOR auto-detection 456dnl and sets its value unless it is already set with 457dnl a non-empty value. 458dnl 459dnl These basic checks are intended to be placed and 460dnl executed as early as possible in the resulting 461dnl configure script, and as such these must be pure 462dnl and portable shell code. 463dnl 464dnl This macro may be used directly, or indirectly 465dnl when using other macros that AC_REQUIRE it such 466dnl as XC_CHECK_PATH_SEPARATOR. 467dnl 468dnl Currently the mechanism used to ensure that this 469dnl macro expands early enough in generated configure 470dnl script is making it override autoconf and libtool 471dnl PATH_SEPARATOR check. 472 473AC_DEFUN([XC_CONFIGURE_PREAMBLE], 474[dnl 475AC_PREREQ([2.50])dnl 476dnl 477AC_BEFORE([$0],[_XC_CFG_PRE_PREAMBLE])dnl 478AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl 479AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl 480AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 481AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl 482AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl 483AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl 484AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_TR])dnl 485AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_WC])dnl 486AC_BEFORE([$0],[_XC_CFG_PRE_BASIC_CHK_UTIL_CAT])dnl 487AC_BEFORE([$0],[_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl 488AC_BEFORE([$0],[_XC_CFG_PRE_POSTLUDE])dnl 489dnl 490AC_BEFORE([$0],[AC_CHECK_TOOL])dnl 491AC_BEFORE([$0],[AC_CHECK_PROG])dnl 492AC_BEFORE([$0],[AC_CHECK_TOOLS])dnl 493AC_BEFORE([$0],[AC_CHECK_PROGS])dnl 494dnl 495AC_BEFORE([$0],[AC_PATH_TOOL])dnl 496AC_BEFORE([$0],[AC_PATH_PROG])dnl 497AC_BEFORE([$0],[AC_PATH_PROGS])dnl 498dnl 499AC_BEFORE([$0],[AC_PROG_SED])dnl 500AC_BEFORE([$0],[AC_PROG_GREP])dnl 501AC_BEFORE([$0],[AC_PROG_LN_S])dnl 502AC_BEFORE([$0],[AC_PROG_MKDIR_P])dnl 503AC_BEFORE([$0],[AC_PROG_INSTALL])dnl 504AC_BEFORE([$0],[AC_PROG_MAKE_SET])dnl 505AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl 506dnl 507AC_BEFORE([$0],[LT_INIT])dnl 508AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl 509AC_BEFORE([$0],[AC_LIBTOOL_WIN32_DLL])dnl 510dnl 511AC_REQUIRE([_XC_CFG_PRE_PREAMBLE])dnl 512AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_ECHO])dnl 513AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_TEST])dnl 514AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_VAR_PATH])dnl 515AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_CMD_EXPR])dnl 516AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_SED])dnl 517AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_GREP])dnl 518AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_TR])dnl 519AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_WC])dnl 520AC_REQUIRE([_XC_CFG_PRE_BASIC_CHK_UTIL_CAT])dnl 521AC_REQUIRE([_XC_CFG_PRE_CHECK_PATH_SEPARATOR])dnl 522AC_REQUIRE([_XC_CFG_PRE_POSTLUDE])dnl 523dnl 524m4_pattern_forbid([^_*XC])dnl 525m4_define([$0],[])dnl 526]) 527 528 529dnl Override autoconf and libtool PATH_SEPARATOR check 530dnl ------------------------------------------------- 531dnl Macros overriding. 532dnl 533dnl This is done to ensure that the same check is 534dnl used across different autoconf versions and to 535dnl allow expansion of XC_CONFIGURE_PREAMBLE macro 536dnl early enough in the generated configure script. 537 538dnl 539dnl Override when using autoconf 2.53 and newer. 540dnl 541 542m4_ifdef([_AS_PATH_SEPARATOR_PREPARE], 543[dnl 544m4_undefine([_AS_PATH_SEPARATOR_PREPARE])dnl 545m4_defun([_AS_PATH_SEPARATOR_PREPARE], 546[dnl 547AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl 548m4_define([$0],[])dnl 549])dnl 550]) 551 552dnl 553dnl Override when using autoconf 2.50 to 2.52 554dnl 555 556m4_ifdef([_AC_INIT_PREPARE_FS_SEPARATORS], 557[dnl 558m4_undefine([_AC_INIT_PREPARE_FS_SEPARATORS])dnl 559m4_defun([_AC_INIT_PREPARE_FS_SEPARATORS], 560[dnl 561AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl 562ac_path_separator=$PATH_SEPARATOR 563m4_define([$0],[])dnl 564])dnl 565]) 566 567dnl 568dnl Override when using libtool 1.4.2 569dnl 570 571m4_ifdef([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR], 572[dnl 573m4_undefine([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR])dnl 574m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR], 575[dnl 576AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl 577lt_cv_sys_path_separator=$PATH_SEPARATOR 578m4_define([$0],[])dnl 579])dnl 580]) 581 582 583dnl XC_CHECK_PATH_SEPARATOR 584dnl ------------------------------------------------- 585dnl Public macro. 586dnl 587dnl Usage of this macro ensures that generated configure 588dnl script uses the same PATH_SEPARATOR check irrespective 589dnl of autoconf or libtool version being used to generate 590dnl configure script. 591dnl 592dnl Emits shell code that computes the path separator 593dnl and stores the result in 'PATH_SEPARATOR', unless 594dnl the user has already set it with a non-empty value. 595dnl 596dnl This path separator is the symbol used to separate 597dnl or differentiate paths inside the 'PATH' environment 598dnl variable. 599dnl 600dnl Non-empty user provided 'PATH_SEPARATOR' always 601dnl overrides the auto-detected one. 602dnl 603dnl Strictly speaking the check is done in two steps. The 604dnl first, which does the actual check, takes place in 605dnl XC_CONFIGURE_PREAMBLE macro and happens very early in 606dnl generated configure script. The second one shows and 607dnl logs the result of the check into config.log at a later 608dnl configure stage. Placement of this second stage in 609dnl generated configure script will be done where first 610dnl direct or indirect usage of this macro happens. 611 612AC_DEFUN([XC_CHECK_PATH_SEPARATOR], 613[dnl 614AC_PREREQ([2.50])dnl 615dnl 616AC_BEFORE([$0],[AC_CHECK_TOOL])dnl 617AC_BEFORE([$0],[AC_CHECK_PROG])dnl 618AC_BEFORE([$0],[AC_CHECK_TOOLS])dnl 619AC_BEFORE([$0],[AC_CHECK_PROGS])dnl 620dnl 621AC_BEFORE([$0],[AC_PATH_TOOL])dnl 622AC_BEFORE([$0],[AC_PATH_PROG])dnl 623AC_BEFORE([$0],[AC_PATH_PROGS])dnl 624dnl 625AC_BEFORE([$0],[AC_PROG_SED])dnl 626AC_BEFORE([$0],[AC_PROG_GREP])dnl 627AC_BEFORE([$0],[AC_PROG_LN_S])dnl 628AC_BEFORE([$0],[AC_PROG_MKDIR_P])dnl 629AC_BEFORE([$0],[AC_PROG_INSTALL])dnl 630AC_BEFORE([$0],[AC_PROG_MAKE_SET])dnl 631AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl 632dnl 633AC_BEFORE([$0],[LT_INIT])dnl 634AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl 635AC_BEFORE([$0],[AC_LIBTOOL_WIN32_DLL])dnl 636dnl 637AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl 638dnl 639# 640# Check that 'XC_CONFIGURE_PREAMBLE' has already run. 641# 642 643if test -z "$xc_configure_preamble_result"; then 644 AC_MSG_ERROR([xc_configure_preamble_result not set (internal problem)]) 645fi 646 647# 648# Check that 'PATH_SEPARATOR' has already been set. 649# 650 651if test -z "$xc_PATH_SEPARATOR"; then 652 AC_MSG_ERROR([xc_PATH_SEPARATOR not set (internal problem)]) 653fi 654if test -z "$PATH_SEPARATOR"; then 655 AC_MSG_ERROR([PATH_SEPARATOR not set (internal or config.site problem)]) 656fi 657AC_MSG_CHECKING([for path separator]) 658AC_MSG_RESULT([$PATH_SEPARATOR]) 659if test "x$PATH_SEPARATOR" != "x$xc_PATH_SEPARATOR"; then 660 AC_MSG_CHECKING([for initial path separator]) 661 AC_MSG_RESULT([$xc_PATH_SEPARATOR]) 662 AC_MSG_ERROR([path separator mismatch (internal or config.site problem)]) 663fi 664dnl 665m4_pattern_forbid([^_*XC])dnl 666m4_define([$0],[])dnl 667]) 668
