1 # lib-link.m4 serial 9 (gettext-0.16) 2 dnl Copyright (C) 2001-2006 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl with or without modifications, as long as this notice is preserved. 6 7 dnl From Bruno Haible. 8 9 AC_PREREQ(2.50) 10 11 dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and 12 dnl the libraries corresponding to explicit and implicit dependencies. 13 dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and 14 dnl augments the CPPFLAGS variable. 15 AC_DEFUN([AC_LIB_LINKFLAGS], 16 [ 17 AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) 18 AC_REQUIRE([AC_LIB_RPATH]) 19 define([Name],[translit([$1],[./-], [___])]) 20 define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], 21 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) 22 AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [ 23 AC_LIB_LINKFLAGS_BODY([$1], [$2]) 24 ac_cv_lib[]Name[]_libs="$LIB[]NAME" 25 ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME" 26 ac_cv_lib[]Name[]_cppflags="$INC[]NAME" 27 ]) 28 LIB[]NAME="$ac_cv_lib[]Name[]_libs" 29 LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs" 30 INC[]NAME="$ac_cv_lib[]Name[]_cppflags" 31 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) 32 AC_SUBST([LIB]NAME) 33 AC_SUBST([LTLIB]NAME) 34 dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the 35 dnl results of this search when this library appears as a dependency. 36 HAVE_LIB[]NAME=yes 37 undefine([Name]) 38 undefine([NAME]) 39 ]) 40 41 dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode) 42 dnl searches for libname and the libraries corresponding to explicit and 43 dnl implicit dependencies, together with the specified include files and 44 dnl the ability to compile and link the specified testcode. If found, it 45 dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and 46 dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and 47 dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs 48 dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty. 49 AC_DEFUN([AC_LIB_HAVE_LINKFLAGS], 50 [ 51 AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) 52 AC_REQUIRE([AC_LIB_RPATH]) 53 define([Name],[translit([$1],[./-], [___])]) 54 define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], 55 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) 56 57 dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME 58 dnl accordingly. 59 AC_LIB_LINKFLAGS_BODY([$1], [$2]) 60 61 dnl Add $INC[]NAME to CPPFLAGS before performing the following checks, 62 dnl because if the user has installed lib[]Name and not disabled its use 63 dnl via --without-lib[]Name-prefix, he wants to use it. 64 ac_save_CPPFLAGS="$CPPFLAGS" 65 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME) 66 67 AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [ 68 ac_save_LIBS="$LIBS" 69 LIBS="$LIBS $LIB[]NAME" 70 AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no]) 71 LIBS="$ac_save_LIBS" 72 ]) 73 if test "$ac_cv_lib[]Name" = yes; then 74 HAVE_LIB[]NAME=yes 75 AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.]) 76 AC_MSG_CHECKING([how to link with lib[]$1]) 77 AC_MSG_RESULT([$LIB[]NAME]) 78 else 79 HAVE_LIB[]NAME=no 80 dnl If $LIB[]NAME didn't lead to a usable library, we don't need 81 dnl $INC[]NAME either. 82 CPPFLAGS="$ac_save_CPPFLAGS" 83 LIB[]NAME= 84 LTLIB[]NAME= 85 fi 86 AC_SUBST([HAVE_LIB]NAME) 87 AC_SUBST([LIB]NAME) 88 AC_SUBST([LTLIB]NAME) 89 undefine([Name]) 90 undefine([NAME]) 91 ]) 92 93 dnl Determine the platform dependent parameters needed to use rpath: 94 dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator, 95 dnl hardcode_direct, hardcode_minus_L. 96 AC_DEFUN([AC_LIB_RPATH], 97 [ 98 dnl Tell automake >= 1.10 to complain if config.rpath is missing. 99 m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])]) 100 AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS 101 AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld 102 AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host 103 AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir 104 AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [ 105 CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \ 106 ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh 107 . ./conftest.sh 108 rm -f ./conftest.sh 109 acl_cv_rpath=done 110 ]) 111 wl="$acl_cv_wl" 112 libext="$acl_cv_libext" 113 shlibext="$acl_cv_shlibext" 114 hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" 115 hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" 116 hardcode_direct="$acl_cv_hardcode_direct" 117 hardcode_minus_L="$acl_cv_hardcode_minus_L" 118 dnl Determine whether the user wants rpath handling at all. 119 AC_ARG_ENABLE(rpath, 120 [ --disable-rpath do not hardcode runtime library paths], 121 :, enable_rpath=yes) 122 ]) 123 124 dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and 125 dnl the libraries corresponding to explicit and implicit dependencies. 126 dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. 127 AC_DEFUN([AC_LIB_LINKFLAGS_BODY], 128 [ 129 AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) 130 define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], 131 [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) 132 dnl By default, look in $includedir and $libdir. 133 use_additional=yes 134 AC_LIB_WITH_FINAL_PREFIX([ 135 eval additional_includedir=\"$includedir\" 136 eval additional_libdir=\"$libdir\" 137 ]) 138 AC_LIB_ARG_WITH([lib$1-prefix], 139 [ --with-lib$1-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib 140 --without-lib$1-prefix don't search for lib$1 in includedir and libdir], 141 [ 142 if test "X$withval" = "Xno"; then 143 use_additional=no 144 else 145 if test "X$withval" = "X"; then 146 AC_LIB_WITH_FINAL_PREFIX([ 147 eval additional_includedir=\"$includedir\" 148 eval additional_libdir=\"$libdir\" 149 ]) 150 else 151 additional_includedir="$withval/include" 152 additional_libdir="$withval/$acl_libdirstem" 153 fi 154 fi 155 ]) 156 dnl Search the library and its dependencies in $additional_libdir and 157 dnl $LDFLAGS. Using breadth-first-seach. 158 LIB[]NAME= 159 LTLIB[]NAME= 160 INC[]NAME= 161 rpathdirs= 162 ltrpathdirs= 163 names_already_handled= 164 names_next_round='$1 $2' 165 while test -n "$names_next_round"; do 166 names_this_round="$names_next_round" 167 names_next_round= 168 for name in $names_this_round; do 169 already_handled= 170 for n in $names_already_handled; do 171 if test "$n" = "$name"; then 172 already_handled=yes 173 break 174 fi 175 done 176 if test -z "$already_handled"; then 177 names_already_handled="$names_already_handled $name" 178 dnl See if it was already located by an earlier AC_LIB_LINKFLAGS 179 dnl or AC_LIB_HAVE_LINKFLAGS call. 180 uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'` 181 eval value=\"\$HAVE_LIB$uppername\" 182 if test -n "$value"; then 183 if test "$value" = yes; then 184 eval value=\"\$LIB$uppername\" 185 test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" 186 eval value=\"\$LTLIB$uppername\" 187 test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" 188 else 189 dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined 190 dnl that this library doesn't exist. So just drop it. 191 : 192 fi 193 else 194 dnl Search the library lib$name in $additional_libdir and $LDFLAGS 195 dnl and the already constructed $LIBNAME/$LTLIBNAME. 196 found_dir= 197 found_la= 198 found_so= 199 found_a= 200 if test $use_additional = yes; then 201 if test -n "$shlibext" \ 202 && { test -f "$additional_libdir/lib$name.$shlibext" \ 203 || { test "$shlibext" = dll \ 204 && test -f "$additional_libdir/lib$name.dll.a"; }; }; then 205 found_dir="$additional_libdir" 206 if test -f "$additional_libdir/lib$name.$shlibext"; then 207 found_so="$additional_libdir/lib$name.$shlibext" 208 else 209 found_so="$additional_libdir/lib$name.dll.a" 210 fi 211 if test -f "$additional_libdir/lib$name.la"; then 212 found_la="$additional_libdir/lib$name.la" 213 fi 214 else 215 if test -f "$additional_libdir/lib$name.$libext"; then 216 found_dir="$additional_libdir" 217 found_a="$additional_libdir/lib$name.$libext" 218 if test -f "$additional_libdir/lib$name.la"; then 219 found_la="$additional_libdir/lib$name.la" 220 fi 221 fi 222 fi 223 fi 224 if test "X$found_dir" = "X"; then 225 for x in $LDFLAGS $LTLIB[]NAME; do 226 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 227 case "$x" in 228 -L*) 229 dir=`echo "X$x" | sed -e 's/^X-L//'` 230 if test -n "$shlibext" \ 231 && { test -f "$dir/lib$name.$shlibext" \ 232 || { test "$shlibext" = dll \ 233 && test -f "$dir/lib$name.dll.a"; }; }; then 234 found_dir="$dir" 235 if test -f "$dir/lib$name.$shlibext"; then 236 found_so="$dir/lib$name.$shlibext" 237 else 238 found_so="$dir/lib$name.dll.a" 239 fi 240 if test -f "$dir/lib$name.la"; then 241 found_la="$dir/lib$name.la" 242 fi 243 else 244 if test -f "$dir/lib$name.$libext"; then 245 found_dir="$dir" 246 found_a="$dir/lib$name.$libext" 247 if test -f "$dir/lib$name.la"; then 248 found_la="$dir/lib$name.la" 249 fi 250 fi 251 fi 252 ;; 253 esac 254 if test "X$found_dir" != "X"; then 255 break 256 fi 257 done 258 fi 259 if test "X$found_dir" != "X"; then 260 dnl Found the library. 261 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" 262 if test "X$found_so" != "X"; then 263 dnl Linking with a shared library. We attempt to hardcode its 264 dnl directory into the executable's runpath, unless it's the 265 dnl standard /usr/lib. 266 if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/$acl_libdirstem"; then 267 dnl No hardcoding is needed. 268 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" 269 else 270 dnl Use an explicit option to hardcode DIR into the resulting 271 dnl binary. 272 dnl Potentially add DIR to ltrpathdirs. 273 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. 274 haveit= 275 for x in $ltrpathdirs; do 276 if test "X$x" = "X$found_dir"; then 277 haveit=yes 278 break 279 fi 280 done 281 if test -z "$haveit"; then 282 ltrpathdirs="$ltrpathdirs $found_dir" 283 fi 284 dnl The hardcoding into $LIBNAME is system dependent. 285 if test "$hardcode_direct" = yes; then 286 dnl Using DIR/libNAME.so during linking hardcodes DIR into the 287 dnl resulting binary. 288 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" 289 else 290 if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then 291 dnl Use an explicit option to hardcode DIR into the resulting 292 dnl binary. 293 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" 294 dnl Potentially add DIR to rpathdirs. 295 dnl The rpathdirs will be appended to $LIBNAME at the end. 296 haveit= 297 for x in $rpathdirs; do 298 if test "X$x" = "X$found_dir"; then 299 haveit=yes 300 break 301 fi 302 done 303 if test -z "$haveit"; then 304 rpathdirs="$rpathdirs $found_dir" 305 fi 306 else 307 dnl Rely on "-L$found_dir". 308 dnl But don't add it if it's already contained in the LDFLAGS 309 dnl or the already constructed $LIBNAME 310 haveit= 311 for x in $LDFLAGS $LIB[]NAME; do 312 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 313 if test "X$x" = "X-L$found_dir"; then 314 haveit=yes 315 break 316 fi 317 done 318 if test -z "$haveit"; then 319 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" 320 fi 321 if test "$hardcode_minus_L" != no; then 322 dnl FIXME: Not sure whether we should use 323 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" 324 dnl here. 325 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" 326 else 327 dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH 328 dnl here, because this doesn't fit in flags passed to the 329 dnl compiler. So give up. No hardcoding. This affects only 330 dnl very old systems. 331 dnl FIXME: Not sure whether we should use 332 dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" 333 dnl here. 334 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" 335 fi 336 fi 337 fi 338 fi 339 else 340 if test "X$found_a" != "X"; then 341 dnl Linking with a static library. 342 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" 343 else 344 dnl We shouldn't come here, but anyway it's good to have a 345 dnl fallback. 346 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" 347 fi 348 fi 349 dnl Assume the include files are nearby. 350 additional_includedir= 351 case "$found_dir" in 352 */$acl_libdirstem | */$acl_libdirstem/) 353 basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'` 354 additional_includedir="$basedir/include" 355 ;; 356 esac 357 if test "X$additional_includedir" != "X"; then 358 dnl Potentially add $additional_includedir to $INCNAME. 359 dnl But don't add it 360 dnl 1. if it's the standard /usr/include, 361 dnl 2. if it's /usr/local/include and we are using GCC on Linux, 362 dnl 3. if it's already present in $CPPFLAGS or the already 363 dnl constructed $INCNAME, 364 dnl 4. if it doesn't exist as a directory. 365 if test "X$additional_includedir" != "X/usr/include"; then 366 haveit= 367 if test "X$additional_includedir" = "X/usr/local/include"; then 368 if test -n "$GCC"; then 369 case $host_os in 370 linux* | gnu* | k*bsd*-gnu) haveit=yes;; 371 esac 372 fi 373 fi 374 if test -z "$haveit"; then 375 for x in $CPPFLAGS $INC[]NAME; do 376 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 377 if test "X$x" = "X-I$additional_includedir"; then 378 haveit=yes 379 break 380 fi 381 done 382 if test -z "$haveit"; then 383 if test -d "$additional_includedir"; then 384 dnl Really add $additional_includedir to $INCNAME. 385 INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" 386 fi 387 fi 388 fi 389 fi 390 fi 391 dnl Look for dependencies. 392 if test -n "$found_la"; then 393 dnl Read the .la file. It defines the variables 394 dnl dlname, library_names, old_library, dependency_libs, current, 395 dnl age, revision, installed, dlopen, dlpreopen, libdir. 396 save_libdir="$libdir" 397 case "$found_la" in 398 */* | *\\*) . "$found_la" ;; 399 *) . "./$found_la" ;; 400 esac 401 libdir="$save_libdir" 402 dnl We use only dependency_libs. 403 for dep in $dependency_libs; do 404 case "$dep" in 405 -L*) 406 additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'` 407 dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME. 408 dnl But don't add it 409 dnl 1. if it's the standard /usr/lib, 410 dnl 2. if it's /usr/local/lib and we are using GCC on Linux, 411 dnl 3. if it's already present in $LDFLAGS or the already 412 dnl constructed $LIBNAME, 413 dnl 4. if it doesn't exist as a directory. 414 if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then 415 haveit= 416 if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then 417 if test -n "$GCC"; then 418 case $host_os in 419 linux* | gnu* | k*bsd*-gnu) haveit=yes;; 420 esac 421 fi 422 fi 423 if test -z "$haveit"; then 424 haveit= 425 for x in $LDFLAGS $LIB[]NAME; do 426 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 427 if test "X$x" = "X-L$additional_libdir"; then 428 haveit=yes 429 break 430 fi 431 done 432 if test -z "$haveit"; then 433 if test -d "$additional_libdir"; then 434 dnl Really add $additional_libdir to $LIBNAME. 435 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir" 436 fi 437 fi 438 haveit= 439 for x in $LDFLAGS $LTLIB[]NAME; do 440 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 441 if test "X$x" = "X-L$additional_libdir"; then 442 haveit=yes 443 break 444 fi 445 done 446 if test -z "$haveit"; then 447 if test -d "$additional_libdir"; then 448 dnl Really add $additional_libdir to $LTLIBNAME. 449 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir" 450 fi 451 fi 452 fi 453 fi 454 ;; 455 -R*) 456 dir=`echo "X$dep" | sed -e 's/^X-R//'` 457 if test "$enable_rpath" != no; then 458 dnl Potentially add DIR to rpathdirs. 459 dnl The rpathdirs will be appended to $LIBNAME at the end. 460 haveit= 461 for x in $rpathdirs; do 462 if test "X$x" = "X$dir"; then 463 haveit=yes 464 break 465 fi 466 done 467 if test -z "$haveit"; then 468 rpathdirs="$rpathdirs $dir" 469 fi 470 dnl Potentially add DIR to ltrpathdirs. 471 dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. 472 haveit= 473 for x in $ltrpathdirs; do 474 if test "X$x" = "X$dir"; then 475 haveit=yes 476 break 477 fi 478 done 479 if test -z "$haveit"; then 480 ltrpathdirs="$ltrpathdirs $dir" 481 fi 482 fi 483 ;; 484 -l*) 485 dnl Handle this in the next round. 486 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` 487 ;; 488 *.la) 489 dnl Handle this in the next round. Throw away the .la's 490 dnl directory; it is already contained in a preceding -L 491 dnl option. 492 names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` 493 ;; 494 *) 495 dnl Most likely an immediate library name. 496 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" 497 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" 498 ;; 499 esac 500 done 501 fi 502 else 503 dnl Didn't find the library; assume it is in the system directories 504 dnl known to the linker and runtime loader. (All the system 505 dnl directories known to the linker should also be known to the 506 dnl runtime loader, otherwise the system is severely misconfigured.) 507 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" 508 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" 509 fi 510 fi 511 fi 512 done 513 done 514 if test "X$rpathdirs" != "X"; then 515 if test -n "$hardcode_libdir_separator"; then 516 dnl Weird platform: only the last -rpath option counts, the user must 517 dnl pass all path elements in one option. We can arrange that for a 518 dnl single library, but not when more than one $LIBNAMEs are used. 519 alldirs= 520 for found_dir in $rpathdirs; do 521 alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir" 522 done 523 dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl. 524 acl_save_libdir="$libdir" 525 libdir="$alldirs" 526 eval flag=\"$hardcode_libdir_flag_spec\" 527 libdir="$acl_save_libdir" 528 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" 529 else 530 dnl The -rpath options are cumulative. 531 for found_dir in $rpathdirs; do 532 acl_save_libdir="$libdir" 533 libdir="$found_dir" 534 eval flag=\"$hardcode_libdir_flag_spec\" 535 libdir="$acl_save_libdir" 536 LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" 537 done 538 fi 539 fi 540 if test "X$ltrpathdirs" != "X"; then 541 dnl When using libtool, the option that works for both libraries and 542 dnl executables is -R. The -R options are cumulative. 543 for found_dir in $ltrpathdirs; do 544 LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" 545 done 546 fi 547 ]) 548 549 dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, 550 dnl unless already present in VAR. 551 dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes 552 dnl contains two or three consecutive elements that belong together. 553 AC_DEFUN([AC_LIB_APPENDTOVAR], 554 [ 555 for element in [$2]; do 556 haveit= 557 for x in $[$1]; do 558 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) 559 if test "X$x" = "X$element"; then 560 haveit=yes 561 break 562 fi 563 done 564 if test -z "$haveit"; then 565 [$1]="${[$1]}${[$1]:+ }$element" 566 fi 567 done 568 ]) 569 570 dnl For those cases where a variable contains several -L and -l options 571 dnl referring to unknown libraries and directories, this macro determines the 572 dnl necessary additional linker options for the runtime path. 573 dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL]) 574 dnl sets LDADDVAR to linker options needed together with LIBSVALUE. 575 dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed, 576 dnl otherwise linking without libtool is assumed. 577 AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS], 578 [ 579 AC_REQUIRE([AC_LIB_RPATH]) 580 AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) 581 $1= 582 if test "$enable_rpath" != no; then 583 if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then 584 dnl Use an explicit option to hardcode directories into the resulting 585 dnl binary. 586 rpathdirs= 587 next= 588 for opt in $2; do 589 if test -n "$next"; then 590 dir="$next" 591 dnl No need to hardcode the standard /usr/lib. 592 if test "X$dir" != "X/usr/$acl_libdirstem"; then 593 rpathdirs="$rpathdirs $dir" 594 fi 595 next= 596 else 597 case $opt in 598 -L) next=yes ;; 599 -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'` 600 dnl No need to hardcode the standard /usr/lib. 601 if test "X$dir" != "X/usr/$acl_libdirstem"; then 602 rpathdirs="$rpathdirs $dir" 603 fi 604 next= ;; 605 *) next= ;; 606 esac 607 fi 608 done 609 if test "X$rpathdirs" != "X"; then 610 if test -n ""$3""; then 611 dnl libtool is used for linking. Use -R options. 612 for dir in $rpathdirs; do 613 $1="${$1}${$1:+ }-R$dir" 614 done 615 else 616 dnl The linker is used for linking directly. 617 if test -n "$hardcode_libdir_separator"; then 618 dnl Weird platform: only the last -rpath option counts, the user 619 dnl must pass all path elements in one option. 620 alldirs= 621 for dir in $rpathdirs; do 622 alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$dir" 623 done 624 acl_save_libdir="$libdir" 625 libdir="$alldirs" 626 eval flag=\"$hardcode_libdir_flag_spec\" 627 libdir="$acl_save_libdir" 628 $1="$flag" 629 else 630 dnl The -rpath options are cumulative. 631 for dir in $rpathdirs; do 632 acl_save_libdir="$libdir" 633 libdir="$dir" 634 eval flag=\"$hardcode_libdir_flag_spec\" 635 libdir="$acl_save_libdir" 636 $1="${$1}${$1:+ }$flag" 637 done 638 fi 639 fi 640 fi 641 fi 642 fi 643 AC_SUBST([$1]) 644 ]) 645
Indexes created Wed Mar 04 05:31:52 UTC 2026