1 # Autoconf M4 include file defining utility macros for complex Canadian 2 # cross builds. 3 4 dnl #### 5 dnl # _GCC_TOPLEV_NONCANONICAL_BUILD 6 dnl # $build_alias or canonical $build if blank. 7 dnl # Used when we would use $build_alias, but empty is not OK. 8 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD], 9 [AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl 10 case ${build_alias} in 11 "") build_noncanonical=${build} ;; 12 *) build_noncanonical=${build_alias} ;; 13 esac 14 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD 15 16 dnl #### 17 dnl # _GCC_TOPLEV_NONCANONICAL_HOST 18 dnl # $host_alias, or $build_noncanonical if blank. 19 dnl # Used when we would use $host_alias, but empty is not OK. 20 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST], 21 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl 22 case ${host_alias} in 23 "") host_noncanonical=${build_noncanonical} ;; 24 *) host_noncanonical=${host_alias} ;; 25 esac 26 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST 27 28 dnl #### 29 dnl # _GCC_TOPLEV_NONCANONICAL_TARGET 30 dnl # $target_alias or $host_noncanonical if blank. 31 dnl # Used when we would use $target_alias, but empty is not OK. 32 AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET], 33 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl 34 case ${target_alias} in 35 "") target_noncanonical=${host_noncanonical} ;; 36 *) target_noncanonical=${target_alias} ;; 37 esac 38 ]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET 39 40 dnl #### 41 dnl # ACX_NONCANONICAL_BUILD 42 dnl # Like underscored version, but AC_SUBST's. 43 AC_DEFUN([ACX_NONCANONICAL_BUILD], 44 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl 45 AC_SUBST(build_noncanonical) 46 ]) []dnl # ACX_NONCANONICAL_BUILD 47 48 dnl #### 49 dnl # ACX_NONCANONICAL_HOST 50 dnl # Like underscored version, but AC_SUBST's. 51 AC_DEFUN([ACX_NONCANONICAL_HOST], 52 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl 53 AC_SUBST(host_noncanonical) 54 ]) []dnl # ACX_NONCANONICAL_HOST 55 56 dnl #### 57 dnl # ACX_NONCANONICAL_TARGET 58 dnl # Like underscored version, but AC_SUBST's. 59 AC_DEFUN([ACX_NONCANONICAL_TARGET], 60 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl 61 AC_SUBST(target_noncanonical) 62 ]) []dnl # ACX_NONCANONICAL_TARGET 63 64 dnl #### 65 dnl # GCC_TOPLEV_SUBDIRS 66 dnl # GCC & friends build 'build', 'host', and 'target' tools. These must 67 dnl # be separated into three well-known subdirectories of the build directory: 68 dnl # build_subdir, host_subdir, and target_subdir. The values are determined 69 dnl # here so that they can (theoretically) be changed in the future. They 70 dnl # were previously reproduced across many different files. 71 dnl # 72 dnl # This logic really amounts to very little with autoconf 2.13; it will 73 dnl # amount to a lot more with autoconf 2.5x. 74 AC_DEFUN([GCC_TOPLEV_SUBDIRS], 75 [AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl 76 AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl 77 78 # post-stage1 host modules use a different CC_FOR_BUILD so, in order to 79 # have matching libraries, they should use host libraries: Makefile.tpl 80 # arranges to pass --with-build-libsubdir=$(HOST_SUBDIR). 81 # However, they still use the build modules, because the corresponding 82 # host modules (e.g. bison) are only built for the host when bootstrap 83 # finishes. So: 84 # - build_subdir is where we find build modules, and never changes. 85 # - build_libsubdir is where we find build libraries, and can be overridden. 86 87 # Prefix 'build-' so this never conflicts with target_subdir. 88 build_subdir="build-${build_noncanonical}" 89 AC_ARG_WITH(build-libsubdir, 90 [ --with-build-libsubdir=[DIR] Directory where to find libraries for build system], 91 build_libsubdir="$withval", 92 build_libsubdir="$build_subdir") 93 # --srcdir=. covers the toplevel, while "test -d" covers the subdirectories 94 if ( test $srcdir = . && test -d gcc ) \ 95 || test -d $srcdir/../host-${host_noncanonical}; then 96 host_subdir="host-${host_noncanonical}" 97 else 98 host_subdir=. 99 fi 100 # No prefix. 101 target_subdir=${target_noncanonical} 102 AC_SUBST([build_libsubdir]) []dnl 103 AC_SUBST([build_subdir]) []dnl 104 AC_SUBST([host_subdir]) []dnl 105 AC_SUBST([target_subdir]) []dnl 106 ]) []dnl # GCC_TOPLEV_SUBDIRS 107 108 109 #### 110 # _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM 111 # or AC_INIT. 112 # These demand that AC_CANONICAL_SYSTEM be called beforehand. 113 AC_DEFUN([_NCN_TOOL_PREFIXES], 114 [ncn_tool_prefix= 115 test -n "$host_alias" && ncn_tool_prefix=$host_alias- 116 ncn_target_tool_prefix= 117 test -n "$target_alias" && ncn_target_tool_prefix=$target_alias- 118 ]) []dnl # _NCN_TOOL_PREFIXES 119 120 #### 121 # NCN_STRICT_CHECK_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) 122 # Like plain AC_CHECK_TOOLS, but require prefix if build!=host. 123 124 AC_DEFUN([NCN_STRICT_CHECK_TOOLS], 125 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl 126 AC_ARG_VAR([$1], [$1 for the host]) 127 128 if test -n "[$]$1"; then 129 ac_cv_prog_$1=[$]$1 130 elif test -n "$ac_cv_prog_$1"; then 131 $1=$ac_cv_prog_$1 132 fi 133 134 if test -n "$ac_cv_prog_$1"; then 135 for ncn_progname in $2; do 136 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) 137 done 138 fi 139 140 for ncn_progname in $2; do 141 if test -n "$ncn_tool_prefix"; then 142 AC_CHECK_PROG([$1], [${ncn_tool_prefix}${ncn_progname}], 143 [${ncn_tool_prefix}${ncn_progname}], , [$4]) 144 fi 145 if test -z "$ac_cv_prog_$1" && test $build = $host ; then 146 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) 147 fi 148 test -n "$ac_cv_prog_$1" && break 149 done 150 151 if test -z "$ac_cv_prog_$1" ; then 152 ifelse([$3],[], [set dummy $2 153 if test $build = $host ; then 154 $1="[$]2" 155 else 156 $1="${ncn_tool_prefix}[$]2" 157 fi], [$1="$3"]) 158 fi 159 ]) []dnl # NCN_STRICT_CHECK_TOOLS 160 161 #### 162 # NCN_STRICT_CHECK_TARGET_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) 163 # Like CVS Autoconf AC_CHECK_TARGET_TOOLS, but require prefix if build!=target. 164 165 AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOLS], 166 [AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl 167 AC_ARG_VAR([$1], patsubst([$1], [_FOR_TARGET$], [])[ for the target]) 168 169 if test -n "[$]$1"; then 170 ac_cv_prog_$1=[$]$1 171 elif test -n "$ac_cv_prog_$1"; then 172 $1=$ac_cv_prog_$1 173 fi 174 175 if test -n "$ac_cv_prog_$1"; then 176 for ncn_progname in $2; do 177 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) 178 done 179 fi 180 181 if test -z "$ac_cv_prog_$1" && test -n "$with_build_time_tools"; then 182 for ncn_progname in $2; do 183 AC_MSG_CHECKING([for ${ncn_progname} in $with_build_time_tools]) 184 if test -x $with_build_time_tools/${ncn_progname}; then 185 ac_cv_prog_$1=$with_build_time_tools/${ncn_progname} 186 AC_MSG_RESULT(yes) 187 break 188 else 189 AC_MSG_RESULT(no) 190 fi 191 done 192 fi 193 194 if test -z "$ac_cv_prog_$1"; then 195 for ncn_progname in $2; do 196 if test -n "$ncn_target_tool_prefix"; then 197 AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}${ncn_progname}], 198 [${ncn_target_tool_prefix}${ncn_progname}], , [$4]) 199 fi 200 if test -z "$ac_cv_prog_$1" && test $build = $target ; then 201 AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) 202 fi 203 test -n "$ac_cv_prog_$1" && break 204 done 205 fi 206 207 if test -z "$ac_cv_prog_$1" ; then 208 ifelse([$3],[], [set dummy $2 209 if test $build = $target ; then 210 $1="[$]2" 211 else 212 $1="${ncn_target_tool_prefix}[$]2" 213 fi], [$1="$3"]) 214 else 215 $1="$ac_cv_prog_$1" 216 fi 217 ]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS 218 219 220 # Backported from Autoconf 2.5x; can go away when and if 221 # we switch. Put the OS path separator in $PATH_SEPARATOR. 222 AC_DEFUN([ACX_PATH_SEP], [ 223 # The user is always right. 224 if test "${PATH_SEPARATOR+set}" != set; then 225 echo "#! /bin/sh" >conf$$.sh 226 echo "exit 0" >>conf$$.sh 227 chmod +x conf$$.sh 228 if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then 229 PATH_SEPARATOR=';' 230 else 231 PATH_SEPARATOR=: 232 fi 233 rm -f conf$$.sh 234 fi 235 ]) 236 237 238 AC_DEFUN([ACX_TOOL_DIRS], [ 239 AC_REQUIRE([ACX_PATH_SEP]) 240 if test "x$exec_prefix" = xNONE; then 241 if test "x$prefix" = xNONE; then 242 gcc_cv_tool_prefix=$ac_default_prefix 243 else 244 gcc_cv_tool_prefix=$prefix 245 fi 246 else 247 gcc_cv_tool_prefix=$exec_prefix 248 fi 249 250 # If there is no compiler in the tree, use the PATH only. In any 251 # case, if there is no compiler in the tree nobody should use 252 # AS_FOR_TARGET and LD_FOR_TARGET. 253 if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then 254 gcc_version=`cat $srcdir/gcc/BASE-VER` 255 gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" 256 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR" 257 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" 258 gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR" 259 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR" 260 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR" 261 else 262 gcc_cv_tool_dirs= 263 fi 264 265 if test x$build = x$target && test -n "$md_exec_prefix"; then 266 gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR" 267 fi 268 269 ]) []dnl # ACX_TOOL_DIRS 270 271 # ACX_HAVE_GCC_FOR_TARGET 272 # Check if the variable GCC_FOR_TARGET really points to a GCC binary. 273 AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [ 274 cat > conftest.c << \EOF 275 #ifdef __GNUC__ 276 gcc_yay; 277 #endif 278 EOF 279 if ($GCC_FOR_TARGET -E conftest.c | grep gcc_yay) > /dev/null 2>&1; then 280 have_gcc_for_target=yes 281 else 282 GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc 283 have_gcc_for_target=no 284 fi 285 rm conftest.c 286 ]) 287 288 # ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG) 289 # Searching for installed target binutils. We need to take extra care, 290 # else we may find the wrong assembler, linker, etc., and lose. 291 # 292 # First try --with-build-time-tools, if specified. 293 # 294 # For build != host, we ask the installed GCC for the name of the tool it 295 # uses, and accept it if it is an absolute path. This is because the 296 # only good choice for a compiler is the same GCC version that is being 297 # installed (or we couldn't make target libraries), and we assume that 298 # on the host system we'll have not only the same GCC version, but also 299 # the same binutils version. 300 # 301 # For build == host, search the same directories that the installed 302 # compiler will search. We used to do this for the assembler, linker, 303 # and nm only; for simplicity of configuration, however, we extend this 304 # criterion to tools (such as ar and ranlib) that are never invoked by 305 # the compiler, to avoid mismatches. 306 # 307 # Also note we have to check MD_EXEC_PREFIX before checking the user's path 308 # if build == target. This makes the most sense only when bootstrapping, 309 # but we also do so when build != host. In this case, we hope that the 310 # build and host systems will have similar contents of MD_EXEC_PREFIX. 311 # 312 # If we do not find a suitable binary, then try the user's path. 313 314 AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [ 315 AC_REQUIRE([ACX_TOOL_DIRS]) 316 AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET]) 317 if test -z "$ac_cv_path_$1" ; then 318 if test -n "$with_build_time_tools"; then 319 AC_MSG_CHECKING([for $2 in $with_build_time_tools]) 320 if test -x $with_build_time_tools/$2; then 321 $1=`cd $with_build_time_tools && pwd`/$2 322 ac_cv_path_$1=[$]$1 323 AC_MSG_RESULT([$ac_cv_path_$1]) 324 else 325 AC_MSG_RESULT(no) 326 fi 327 elif test $build != $host && test $have_gcc_for_target = yes; then 328 $1=`$GCC_FOR_TARGET --print-prog-name=$2` 329 test [$]$1 = $2 && $1= 330 test -n "[$]$1" && ac_cv_path_$1=[$]$1 331 fi 332 fi 333 if test -z "$ac_cv_path_$1" && test -n "$gcc_cv_tool_dirs"; then 334 AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs]) 335 fi 336 if test -z "$ac_cv_path_$1" ; then 337 NCN_STRICT_CHECK_TARGET_TOOLS([$1], [$2]) 338 else 339 $1=$ac_cv_path_$1 340 fi 341 ]) []dnl # ACX_CHECK_INSTALLED_TARGET_TOOL 342 343 ### 344 # AC_PROG_CPP_WERROR 345 # Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which 346 # triggers warnings from the preprocessor. Will be in autoconf 2.58. 347 # For now, using this also overrides header checks to use only the 348 # preprocessor (matches 2.13 behavior; matching 2.58's behavior is a 349 # bit harder from here). 350 # Eventually autoconf will default to checking headers with the compiler 351 # instead, and we'll have to do this differently. 352 353 AC_DEFUN([AC_PROG_CPP_WERROR], 354 [AC_REQUIRE([AC_PROG_CPP])dnl 355 m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD])) 356 ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR 357 358 # Test for GNAT. 359 # We require the gnatbind & gnatmake programs, as well as a compiler driver 360 # that understands Ada. We use the user's CC setting, already found, and 361 # possibly add $1 to the command-line parameters. 362 # 363 # Sets the shell variable have_gnat to yes or no as appropriate, and 364 # substitutes GNATBIND and GNATMAKE. 365 AC_DEFUN([ACX_PROG_GNAT], 366 [AC_REQUIRE([AC_CHECK_TOOL_PREFIX]) 367 AC_REQUIRE([AC_PROG_CC]) 368 AC_CHECK_TOOL(GNATBIND, gnatbind, no) 369 AC_CHECK_TOOL(GNATMAKE, gnatmake, no) 370 AC_CACHE_CHECK([whether compiler driver understands Ada], 371 acx_cv_cc_gcc_supports_ada, 372 [cat >conftest.adb <<EOF 373 procedure conftest is begin null; end conftest; 374 EOF 375 acx_cv_cc_gcc_supports_ada=no 376 # There is a bug in old released versions of GCC which causes the 377 # driver to exit successfully when the appropriate language module 378 # has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1. 379 # Therefore we must check for the error message as well as an 380 # unsuccessful exit. 381 # Other compilers, like HP Tru64 UNIX cc, exit successfully when 382 # given a .adb file, but produce no object file. So we must check 383 # if an object file was really produced to guard against this. 384 errors=`(${CC} $1[]m4_ifval([$1], [ ])-c conftest.adb) 2>&1 || echo failure` 385 if test x"$errors" = x && test -f conftest.$ac_objext; then 386 acx_cv_cc_gcc_supports_ada=yes 387 fi 388 rm -f conftest.*]) 389 390 if test "x$GNATBIND" != xno && test "x$GNATMAKE" != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then 391 have_gnat=yes 392 else 393 have_gnat=no 394 fi 395 ]) 396 397 dnl 'make compare' can be significantly faster, if cmp itself can 398 dnl skip bytes instead of using tail. The test being performed is 399 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2" 400 dnl but we need to sink errors and handle broken shells. We also test 401 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is 402 dnl accepted by cmp on some systems. 403 AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL], 404 [AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip, 405 [ echo abfoo >t1 406 echo cdfoo >t2 407 gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2' 408 if cmp t1 t2 2 2 > /dev/null 2>&1; then 409 if cmp t1 t2 1 1 > /dev/null 2>&1; then 410 : 411 else 412 gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16' 413 fi 414 fi 415 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then 416 if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then 417 : 418 else 419 gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2' 420 fi 421 fi 422 rm t1 t2 423 ]) 424 do_compare="$gcc_cv_prog_cmp_skip" 425 AC_SUBST(do_compare) 426 ]) 427 428 dnl See whether we can include both string.h and strings.h. 429 AC_DEFUN([ACX_HEADER_STRING], 430 [AC_CACHE_CHECK([whether string.h and strings.h may both be included], 431 gcc_cv_header_string, 432 [AC_TRY_COMPILE([#include <string.h> 433 #include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)]) 434 if test $gcc_cv_header_string = yes; then 435 AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.]) 436 fi 437 ]) 438 439 dnl See if stdbool.h properly defines bool and true/false. 440 dnl Check whether _Bool is built-in. 441 AC_DEFUN([ACX_HEADER_STDBOOL], 442 [AC_CACHE_CHECK([for working stdbool.h], 443 ac_cv_header_stdbool_h, 444 [AC_TRY_COMPILE([#include <stdbool.h>], 445 [bool foo = false;], 446 ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)]) 447 if test $ac_cv_header_stdbool_h = yes; then 448 AC_DEFINE(HAVE_STDBOOL_H, 1, 449 [Define if you have a working <stdbool.h> header file.]) 450 fi 451 AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool, 452 [AC_TRY_COMPILE(, 453 [_Bool foo;], 454 gcc_cv_c__bool=yes, gcc_cv_c__bool=no) 455 ]) 456 if test $gcc_cv_c__bool = yes; then 457 AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.]) 458 fi 459 ]) 460 461 dnl See if hard links work and if not, try to substitute $1 or simple copy. 462 AC_DEFUN([ACX_PROG_LN], 463 [AC_MSG_CHECKING(whether ln works) 464 AC_CACHE_VAL(acx_cv_prog_LN, 465 [rm -f conftestdata_t 466 echo >conftestdata_f 467 if ln conftestdata_f conftestdata_t 2>/dev/null 468 then 469 acx_cv_prog_LN=ln 470 else 471 acx_cv_prog_LN=no 472 fi 473 rm -f conftestdata_f conftestdata_t 474 ])dnl 475 if test $acx_cv_prog_LN = no; then 476 LN="ifelse([$1],,cp,[$1])" 477 AC_MSG_RESULT([no, using $LN]) 478 else 479 LN="$acx_cv_prog_LN" 480 AC_MSG_RESULT(yes) 481 fi 482 AC_SUBST(LN)dnl 483 ]) 484 485 dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE) 486 AC_DEFUN([GCC_TARGET_TOOL], 487 [AC_MSG_CHECKING(where to find the target $1) 488 if test "x${build}" != "x${host}" ; then 489 if expr "x[$]$2" : "x/" > /dev/null; then 490 # We already found the complete path 491 ac_dir=`dirname [$]$2` 492 AC_MSG_RESULT(pre-installed in $ac_dir) 493 else 494 # Canadian cross, just use what we found 495 AC_MSG_RESULT(pre-installed) 496 fi 497 else 498 ifelse([$4],,, 499 [ok=yes 500 case " ${configdirs} " in 501 *" patsubst([$4], [/.*], []) "*) ;; 502 *) ok=no ;; 503 esac 504 ifelse([$5],,, 505 [case ,${enable_languages}, in 506 *,$5,*) ;; 507 *) ok=no ;; 508 esac]) 509 if test $ok = yes; then 510 # An in-tree tool is available and we can use it 511 $2='$$r/$(HOST_SUBDIR)/$4' 512 AC_MSG_RESULT(just compiled) 513 el])if expr "x[$]$2" : "x/" > /dev/null; then 514 # We already found the complete path 515 ac_dir=`dirname [$]$2` 516 AC_MSG_RESULT(pre-installed in $ac_dir) 517 elif test "x$target" = "x$host"; then 518 # We can use an host tool 519 $2='$($3)' 520 AC_MSG_RESULT(host tool) 521 else 522 # We need a cross tool 523 AC_MSG_RESULT(pre-installed) 524 fi 525 fi 526 AC_SUBST($2)]) 527 528 529 dnl Locate a program and check that its version is acceptable. 530 dnl ACX_PROG_CHECK_VER(var, name, version-switch, 531 dnl version-extract-regexp, version-glob) 532 AC_DEFUN([ACX_CHECK_PROG_VER],[ 533 AC_CHECK_PROG([$1], [$2], [$2]) 534 if test -n "[$]$1"; then 535 # Found it, now check the version. 536 AC_CACHE_CHECK([for modern $2], 537 [gcc_cv_prog_$2_modern], 538 [ac_prog_version=`eval [$]$1 $3 2>&1 | 539 sed -n 's/^.*patsubst([[$4]],/,\/).*$/\1/p'` 540 541 [case $ac_prog_version in 542 '') gcc_cv_prog_$2_modern=no;; 543 $5) gcc_cv_prog_$2_modern=yes;; 544 *) gcc_cv_prog_$2_modern=no;; 545 esac] 546 ]) 547 else 548 gcc_cv_prog_$2_modern=no 549 fi 550 if test $gcc_cv_prog_$2_modern = no; then 551 $1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2" 552 fi 553 ]) 554 555 dnl Support the --with-pkgversion configure option. 556 dnl ACX_PKGVERSION(default-pkgversion) 557 AC_DEFUN([ACX_PKGVERSION],[ 558 AC_ARG_WITH(pkgversion, 559 AS_HELP_STRING([--with-pkgversion=PKG], 560 [Use PKG in the version string in place of "$1"]), 561 [case "$withval" in 562 yes) AC_MSG_ERROR([package version not specified]) ;; 563 no) PKGVERSION= ;; 564 *) PKGVERSION="($withval) " ;; 565 esac], 566 PKGVERSION="($1) " 567 ) 568 AC_SUBST(PKGVERSION) 569 ]) 570 571 dnl Support the --with-bugurl configure option. 572 dnl ACX_BUGURL(default-bugurl) 573 AC_DEFUN([ACX_BUGURL],[ 574 AC_ARG_WITH(bugurl, 575 AS_HELP_STRING([--with-bugurl=URL], 576 [Direct users to URL to report a bug]), 577 [case "$withval" in 578 yes) AC_MSG_ERROR([bug URL not specified]) ;; 579 no) BUGURL= 580 ;; 581 *) BUGURL="$withval" 582 ;; 583 esac], 584 BUGURL="$1" 585 ) 586 case ${BUGURL} in 587 "") 588 REPORT_BUGS_TO= 589 REPORT_BUGS_TEXI= 590 ;; 591 *) 592 REPORT_BUGS_TO="<$BUGURL>" 593 REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`} 594 ;; 595 esac; 596 AC_SUBST(REPORT_BUGS_TO) 597 AC_SUBST(REPORT_BUGS_TEXI) 598 ]) 599 600 dnl #### 601 dnl # ACX_CHECK_CYGWIN_CAT_WORKS 602 dnl # On Cygwin hosts, check that the cat command ignores 603 dnl # carriage returns as otherwise builds will not work. 604 dnl # See binutils PR 4334 for more details. 605 AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[ 606 AC_MSG_CHECKING([to see if cat works as expected]) 607 echo a >cygwin-cat-check 608 if test `cat cygwin-cat-check` = a ; then 609 rm cygwin-cat-check 610 AC_MSG_RESULT(yes) 611 else 612 rm cygwin-cat-check 613 AC_MSG_RESULT(no) 614 AC_MSG_ERROR([The cat command does not ignore carriage return characters. 615 Please either mount the build directory in binary mode or run the following 616 commands before running any configure script: 617 set -o igncr 618 export SHELLOPTS 619 ]) 620 fi 621 ]) 622
