Mercurial > hg > CbC > CbC_gcc
annotate gcc/acinclude.m4 @ 56:3c8a44c06a95
Added tag gcc-4.4.5 for changeset 77e2b8dfacca
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:41:23 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
|---|---|
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1 dnl Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
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2 dnl |
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3 dnl This file is part of GCC. |
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4 dnl |
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5 dnl GCC is free software; you can redistribute it and/or modify |
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6 dnl it under the terms of the GNU General Public License as published by |
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7 dnl the Free Software Foundation; either version 3, or (at your option) |
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8 dnl any later version. |
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9 dnl |
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10 dnl GCC is distributed in the hope that it will be useful, |
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11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 dnl GNU General Public License for more details. |
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14 dnl |
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15 dnl You should have received a copy of the GNU General Public License |
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16 dnl along with GCC; see the file COPYING3. If not see |
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17 dnl <http://www.gnu.org/licenses/>. |
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18 |
| 0 | 19 dnl See whether we need a declaration for a function. |
| 20 dnl The result is highly dependent on the INCLUDES passed in, so make sure | |
| 21 dnl to use a different cache variable name in this macro if it is invoked | |
| 22 dnl in a different context somewhere else. | |
| 23 dnl gcc_AC_CHECK_DECL(SYMBOL, | |
| 24 dnl [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]]) | |
| 25 AC_DEFUN([gcc_AC_CHECK_DECL], | |
| 26 [AC_MSG_CHECKING([whether $1 is declared]) | |
| 27 AC_CACHE_VAL(gcc_cv_have_decl_$1, | |
| 28 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$4], | |
| 29 [#ifndef $1 | |
| 30 char *(*pfn) = (char *(*)) $1 ; | |
| 31 #endif])], eval "gcc_cv_have_decl_$1=yes", eval "gcc_cv_have_decl_$1=no")]) | |
| 32 if eval "test \"`echo '$gcc_cv_have_decl_'$1`\" = yes"; then | |
| 33 AC_MSG_RESULT(yes) ; ifelse([$2], , :, [$2]) | |
| 34 else | |
| 35 AC_MSG_RESULT(no) ; ifelse([$3], , :, [$3]) | |
| 36 fi | |
| 37 ])dnl | |
| 38 | |
| 39 dnl Check multiple functions to see whether each needs a declaration. | |
| 40 dnl Arrange to define HAVE_DECL_<FUNCTION> to 0 or 1 as appropriate. | |
| 41 dnl gcc_AC_CHECK_DECLS(SYMBOLS, | |
| 42 dnl [ACTION-IF-NEEDED [, ACTION-IF-NOT-NEEDED [, INCLUDES]]]) | |
| 43 AC_DEFUN([gcc_AC_CHECK_DECLS], | |
| 44 [AC_FOREACH([gcc_AC_Func], [$1], | |
| 45 [AH_TEMPLATE(AS_TR_CPP(HAVE_DECL_[]gcc_AC_Func), | |
| 46 [Define to 1 if we found a declaration for ']gcc_AC_Func[', otherwise | |
| 47 define to 0.])])dnl | |
| 48 for ac_func in $1 | |
| 49 do | |
| 50 ac_tr_decl=AS_TR_CPP([HAVE_DECL_$ac_func]) | |
| 51 gcc_AC_CHECK_DECL($ac_func, | |
| 52 [AC_DEFINE_UNQUOTED($ac_tr_decl, 1) $2], | |
| 53 [AC_DEFINE_UNQUOTED($ac_tr_decl, 0) $3], | |
| 54 dnl It is possible that the include files passed in here are local headers | |
| 55 dnl which supply a backup declaration for the relevant prototype based on | |
| 56 dnl the definition of (or lack of) the HAVE_DECL_ macro. If so, this test | |
| 57 dnl will always return success. E.g. see libiberty.h's handling of | |
| 58 dnl `basename'. To avoid this, we define the relevant HAVE_DECL_ macro to | |
| 59 dnl 1 so that any local headers used do not provide their own prototype | |
| 60 dnl during this test. | |
| 61 #undef $ac_tr_decl | |
| 62 #define $ac_tr_decl 1 | |
| 63 $4 | |
| 64 ) | |
| 65 done | |
| 66 ]) | |
| 67 | |
| 68 dnl 'make compare' can be significantly faster, if cmp itself can | |
| 69 dnl skip bytes instead of using tail. The test being performed is | |
| 70 dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2" | |
| 71 dnl but we need to sink errors and handle broken shells. We also test | |
| 72 dnl for the parameter format "cmp file1 file2 skip1 skip2" which is | |
| 73 dnl accepted by cmp on some systems. | |
| 74 AC_DEFUN([gcc_AC_PROG_CMP_IGNORE_INITIAL], | |
| 75 [AC_CACHE_CHECK([for cmp's capabilities], gcc_cv_prog_cmp_skip, | |
| 76 [ echo abfoo >t1 | |
| 77 echo cdfoo >t2 | |
| 78 gcc_cv_prog_cmp_skip=slowcompare | |
| 79 if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then | |
| 80 if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then | |
| 81 : | |
| 82 else | |
| 83 gcc_cv_prog_cmp_skip=gnucompare | |
| 84 fi | |
| 85 fi | |
| 86 if test $gcc_cv_prog_cmp_skip = slowcompare ; then | |
| 87 if cmp t1 t2 2 2 > /dev/null 2>&1; then | |
| 88 if cmp t1 t2 1 1 > /dev/null 2>&1; then | |
| 89 : | |
| 90 else | |
| 91 gcc_cv_prog_cmp_skip=fastcompare | |
| 92 fi | |
| 93 fi | |
| 94 fi | |
| 95 rm t1 t2 | |
| 96 ]) | |
| 97 make_compare_target=$gcc_cv_prog_cmp_skip | |
| 98 AC_SUBST(make_compare_target) | |
| 99 ]) | |
| 100 | |
| 101 dnl See if symbolic links work and if not, try to substitute either hard links or simple copy. | |
| 102 AC_DEFUN([gcc_AC_PROG_LN_S], | |
| 103 [AC_MSG_CHECKING(whether ln -s works) | |
| 104 AC_CACHE_VAL(gcc_cv_prog_LN_S, | |
| 105 [rm -f conftestdata_t | |
| 106 echo >conftestdata_f | |
| 107 if ln -s conftestdata_f conftestdata_t 2>/dev/null | |
| 108 then | |
| 109 gcc_cv_prog_LN_S="ln -s" | |
| 110 else | |
| 111 if ln conftestdata_f conftestdata_t 2>/dev/null | |
| 112 then | |
| 113 gcc_cv_prog_LN_S=ln | |
| 114 else | |
| 115 if cp -p conftestdata_f conftestdata_t 2>/dev/null | |
| 116 then | |
| 117 gcc_cv_prog_LN_S="cp -p" | |
| 118 else | |
| 119 gcc_cv_prog_LN_S=cp | |
| 120 fi | |
| 121 fi | |
| 122 fi | |
| 123 rm -f conftestdata_f conftestdata_t | |
| 124 ])dnl | |
| 125 LN_S="$gcc_cv_prog_LN_S" | |
| 126 if test "$gcc_cv_prog_LN_S" = "ln -s"; then | |
| 127 AC_MSG_RESULT(yes) | |
| 128 else | |
| 129 if test "$gcc_cv_prog_LN_S" = "ln"; then | |
| 130 AC_MSG_RESULT([no, using ln]) | |
| 131 else | |
| 132 AC_MSG_RESULT([no, and neither does ln, so using $gcc_cv_prog_LN_S]) | |
| 133 fi | |
| 134 fi | |
| 135 AC_SUBST(LN_S)dnl | |
| 136 ]) | |
| 137 | |
| 138 dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead | |
| 139 dnl of the usual 2. | |
| 140 AC_DEFUN([gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG], | |
| 141 [AC_CACHE_CHECK([if mkdir takes one argument], gcc_cv_mkdir_takes_one_arg, | |
| 142 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ | |
| 143 #include <sys/types.h> | |
| 144 #ifdef HAVE_SYS_STAT_H | |
| 145 # include <sys/stat.h> | |
| 146 #endif | |
| 147 #ifdef HAVE_UNISTD_H | |
| 148 # include <unistd.h> | |
| 149 #endif | |
| 150 #ifdef HAVE_DIRECT_H | |
| 151 # include <direct.h> | |
| 152 #endif], [mkdir ("foo", 0);])], | |
| 153 gcc_cv_mkdir_takes_one_arg=no, gcc_cv_mkdir_takes_one_arg=yes)]) | |
| 154 if test $gcc_cv_mkdir_takes_one_arg = yes ; then | |
| 155 AC_DEFINE(MKDIR_TAKES_ONE_ARG, 1, [Define if host mkdir takes a single argument.]) | |
| 156 fi | |
| 157 ]) | |
| 158 | |
| 159 AC_DEFUN([gcc_AC_PROG_INSTALL], | |
| 160 [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl | |
| 161 # Find a good install program. We prefer a C program (faster), | |
| 162 # so one script is as good as another. But avoid the broken or | |
| 163 # incompatible versions: | |
| 164 # SysV /etc/install, /usr/sbin/install | |
| 165 # SunOS /usr/etc/install | |
| 166 # IRIX /sbin/install | |
| 167 # AIX /bin/install | |
| 168 # AFS /usr/afsws/bin/install, which mishandles nonexistent args | |
| 169 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" | |
| 170 # ./install, which can be erroneously created by make from ./install.sh. | |
| 171 AC_MSG_CHECKING(for a BSD compatible install) | |
| 172 if test -z "$INSTALL"; then | |
| 173 AC_CACHE_VAL(ac_cv_path_install, | |
| 174 [ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="${IFS}:" | |
| 175 for ac_dir in $PATH; do | |
| 176 # Account for people who put trailing slashes in PATH elements. | |
| 177 case "$ac_dir/" in | |
| 178 /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; | |
| 179 *) | |
| 180 # OSF1 and SCO ODT 3.0 have their own names for install. | |
| 181 for ac_prog in ginstall scoinst install; do | |
| 182 if test -f $ac_dir/$ac_prog; then | |
| 183 if test $ac_prog = install && | |
| 184 grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then | |
| 185 # AIX install. It has an incompatible calling convention. | |
| 186 # OSF/1 installbsd also uses dspmsg, but is usable. | |
| 187 : | |
| 188 else | |
| 189 ac_cv_path_install="$ac_dir/$ac_prog -c" | |
| 190 break 2 | |
| 191 fi | |
| 192 fi | |
| 193 done | |
| 194 ;; | |
| 195 esac | |
| 196 done | |
| 197 IFS="$ac_save_IFS" | |
| 198 ])dnl | |
| 199 if test "${ac_cv_path_install+set}" = set; then | |
| 200 INSTALL="$ac_cv_path_install" | |
| 201 else | |
| 202 # As a last resort, use the slow shell script. We don't cache a | |
| 203 # path for INSTALL within a source directory, because that will | |
| 204 # break other packages using the cache if that directory is | |
| 205 # removed, or if the path is relative. | |
| 206 INSTALL="$ac_install_sh" | |
| 207 fi | |
| 208 fi | |
| 209 dnl We do special magic for INSTALL instead of AC_SUBST, to get | |
| 210 dnl relative paths right. | |
| 211 AC_MSG_RESULT($INSTALL) | |
| 212 AC_SUBST(INSTALL)dnl | |
| 213 | |
| 214 # Use test -z because SunOS4 sh mishandles braces in ${var-val}. | |
| 215 # It thinks the first close brace ends the variable substitution. | |
| 216 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' | |
| 217 AC_SUBST(INSTALL_PROGRAM)dnl | |
| 218 | |
| 219 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' | |
| 220 AC_SUBST(INSTALL_DATA)dnl | |
| 221 ]) | |
| 222 | |
| 223 # mmap(2) blacklisting. Some platforms provide the mmap library routine | |
| 224 # but don't support all of the features we need from it. | |
| 225 AC_DEFUN([gcc_AC_FUNC_MMAP_BLACKLIST], | |
| 226 [ | |
| 227 AC_CHECK_HEADER([sys/mman.h], | |
| 228 [gcc_header_sys_mman_h=yes], [gcc_header_sys_mman_h=no]) | |
| 229 AC_CHECK_FUNC([mmap], [gcc_func_mmap=yes], [gcc_func_mmap=no]) | |
| 230 if test "$gcc_header_sys_mman_h" != yes \ | |
| 231 || test "$gcc_func_mmap" != yes; then | |
| 232 gcc_cv_func_mmap_file=no | |
| 233 gcc_cv_func_mmap_dev_zero=no | |
| 234 gcc_cv_func_mmap_anon=no | |
| 235 else | |
| 236 AC_CACHE_CHECK([whether read-only mmap of a plain file works], | |
| 237 gcc_cv_func_mmap_file, | |
| 238 [# Add a system to this blacklist if | |
| 239 # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a | |
| 240 # memory area containing the same data that you'd get if you applied | |
| 241 # read() to the same fd. The only system known to have a problem here | |
| 242 # is VMS, where text files have record structure. | |
| 243 case "$host_os" in | |
| 244 vms* | ultrix*) | |
| 245 gcc_cv_func_mmap_file=no ;; | |
| 246 *) | |
| 247 gcc_cv_func_mmap_file=yes;; | |
| 248 esac]) | |
| 249 AC_CACHE_CHECK([whether mmap from /dev/zero works], | |
| 250 gcc_cv_func_mmap_dev_zero, | |
| 251 [# Add a system to this blacklist if it has mmap() but /dev/zero | |
| 252 # does not exist, or if mmapping /dev/zero does not give anonymous | |
| 253 # zeroed pages with both the following properties: | |
| 254 # 1. If you map N consecutive pages in with one call, and then | |
| 255 # unmap any subset of those pages, the pages that were not | |
| 256 # explicitly unmapped remain accessible. | |
| 257 # 2. If you map two adjacent blocks of memory and then unmap them | |
| 258 # both at once, they must both go away. | |
| 259 # Systems known to be in this category are Windows (all variants), | |
| 260 # VMS, and Darwin. | |
| 261 case "$host_os" in | |
| 262 vms* | cygwin* | pe | mingw* | darwin* | ultrix* | hpux10* | hpux11.00) | |
| 263 gcc_cv_func_mmap_dev_zero=no ;; | |
| 264 *) | |
| 265 gcc_cv_func_mmap_dev_zero=yes;; | |
| 266 esac]) | |
| 267 | |
| 268 # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for. | |
| 269 AC_CACHE_CHECK([for MAP_ANON(YMOUS)], gcc_cv_decl_map_anon, | |
| 270 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( | |
| 271 [#include <sys/types.h> | |
| 272 #include <sys/mman.h> | |
| 273 #include <unistd.h> | |
| 274 | |
| 275 #ifndef MAP_ANONYMOUS | |
| 276 #define MAP_ANONYMOUS MAP_ANON | |
| 277 #endif | |
| 278 ], | |
| 279 [int n = MAP_ANONYMOUS;])], | |
| 280 gcc_cv_decl_map_anon=yes, | |
| 281 gcc_cv_decl_map_anon=no)]) | |
| 282 | |
| 283 if test $gcc_cv_decl_map_anon = no; then | |
| 284 gcc_cv_func_mmap_anon=no | |
| 285 else | |
| 286 AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works], | |
| 287 gcc_cv_func_mmap_anon, | |
| 288 [# Add a system to this blacklist if it has mmap() and MAP_ANON or | |
| 289 # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) | |
| 290 # doesn't give anonymous zeroed pages with the same properties listed | |
| 291 # above for use of /dev/zero. | |
| 292 # Systems known to be in this category are Windows, VMS, and SCO Unix. | |
| 293 case "$host_os" in | |
| 294 vms* | cygwin* | pe | mingw* | sco* | udk* ) | |
| 295 gcc_cv_func_mmap_anon=no ;; | |
| 296 *) | |
| 297 gcc_cv_func_mmap_anon=yes;; | |
| 298 esac]) | |
| 299 fi | |
| 300 fi | |
| 301 | |
| 302 if test $gcc_cv_func_mmap_file = yes; then | |
| 303 AC_DEFINE(HAVE_MMAP_FILE, 1, | |
| 304 [Define if read-only mmap of a plain file works.]) | |
| 305 fi | |
| 306 if test $gcc_cv_func_mmap_dev_zero = yes; then | |
| 307 AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1, | |
| 308 [Define if mmap of /dev/zero works.]) | |
| 309 fi | |
| 310 if test $gcc_cv_func_mmap_anon = yes; then | |
| 311 AC_DEFINE(HAVE_MMAP_ANON, 1, | |
| 312 [Define if mmap with MAP_ANON(YMOUS) works.]) | |
| 313 fi | |
| 314 ]) | |
| 315 | |
| 316 dnl Determine if enumerated bitfields are unsigned. ISO C says they can | |
| 317 dnl be either signed or unsigned. | |
| 318 dnl | |
| 319 AC_DEFUN([gcc_AC_C_ENUM_BF_UNSIGNED], | |
| 320 [AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned, | |
| 321 [AC_RUN_IFELSE([AC_LANG_SOURCE([#include <stdlib.h> | |
| 322 enum t { BLAH = 128 } ; | |
| 323 struct s_t { enum t member : 8; } s ; | |
| 324 int main(void) | |
| 325 { | |
| 326 s.member = BLAH; | |
| 327 if (s.member < 0) exit(1); | |
| 328 exit(0); | |
| 329 | |
| 330 }])], gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)]) | |
| 331 if test $gcc_cv_enum_bf_unsigned = yes; then | |
| 332 AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1, | |
| 333 [Define if enumerated bitfields are treated as unsigned values.]) | |
| 334 fi]) | |
| 335 | |
| 336 dnl Probe number of bits in a byte. | |
| 337 dnl Note C89 requires CHAR_BIT >= 8. | |
| 338 dnl | |
| 339 AC_DEFUN([gcc_AC_C_CHAR_BIT], | |
| 340 [AC_CACHE_CHECK(for CHAR_BIT, gcc_cv_decl_char_bit, | |
| 341 [AC_EGREP_CPP(found, | |
| 342 [#ifdef HAVE_LIMITS_H | |
| 343 #include <limits.h> | |
| 344 #endif | |
| 345 #ifdef CHAR_BIT | |
| 346 found | |
| 347 #endif], gcc_cv_decl_char_bit=yes, gcc_cv_decl_char_bit=no) | |
| 348 ]) | |
| 349 if test $gcc_cv_decl_char_bit = no; then | |
| 350 AC_CACHE_CHECK(number of bits in a byte, gcc_cv_c_nbby, | |
| 351 [i=8 | |
| 352 gcc_cv_c_nbby= | |
| 353 while test $i -lt 65; do | |
| 354 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, | |
| 355 [switch(0) { | |
| 356 case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i): | |
| 357 case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)): | |
| 358 ; }])], | |
| 359 [gcc_cv_c_nbby=$i; break]) | |
| 360 i=`expr $i + 1` | |
| 361 done | |
| 362 test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed | |
| 363 ]) | |
| 364 if test $gcc_cv_c_nbby = failed; then | |
| 365 AC_MSG_ERROR(cannot determine number of bits in a byte) | |
| 366 else | |
| 367 AC_DEFINE_UNQUOTED(CHAR_BIT, $gcc_cv_c_nbby, | |
| 368 [Define as the number of bits in a byte, if `limits.h' doesn't.]) | |
| 369 fi | |
| 370 fi]) | |
| 371 | |
| 372 AC_DEFUN([gcc_AC_INITFINI_ARRAY], | |
| 373 [AC_ARG_ENABLE(initfini-array, | |
| 374 [ --enable-initfini-array use .init_array/.fini_array sections], | |
| 375 [], [ | |
| 376 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, | |
| 377 gcc_cv_initfini_array, [dnl | |
| 378 AC_RUN_IFELSE([AC_LANG_SOURCE([ | |
| 379 static int x = -1; | |
| 380 int main (void) { return x; } | |
| 381 int foo (void) { x = 0; } | |
| 382 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])], | |
| 383 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no], | |
| 384 [gcc_cv_initfini_array=no])]) | |
| 385 enable_initfini_array=$gcc_cv_initfini_array | |
| 386 ]) | |
| 387 if test $enable_initfini_array = yes; then | |
| 388 AC_DEFINE(HAVE_INITFINI_ARRAY, 1, | |
| 389 [Define .init_array/.fini_array sections are available and working.]) | |
| 390 fi]) | |
| 391 | |
| 392 dnl # _gcc_COMPUTE_GAS_VERSION | |
| 393 dnl # Used by gcc_GAS_VERSION_GTE_IFELSE | |
| 394 dnl # | |
| 395 dnl # WARNING: | |
| 396 dnl # gcc_cv_as_gas_srcdir must be defined before this. | |
| 397 dnl # This gross requirement will go away eventually. | |
| 398 AC_DEFUN([_gcc_COMPUTE_GAS_VERSION], | |
| 399 [gcc_cv_as_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd | |
| 400 for f in $gcc_cv_as_bfd_srcdir/configure \ | |
| 401 $gcc_cv_as_gas_srcdir/configure \ | |
| 402 $gcc_cv_as_gas_srcdir/configure.in \ | |
| 403 $gcc_cv_as_gas_srcdir/Makefile.in ; do | |
| 404 gcc_cv_gas_version=`sed -n -e 's/^[[ ]]*\(VERSION=[[0-9]]*\.[[0-9]]*.*\)/\1/p' < $f` | |
| 405 if test x$gcc_cv_gas_version != x; then | |
| 406 break | |
| 407 fi | |
| 408 done | |
| 409 gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([[0-9]]*\)"` | |
| 410 gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.\([[0-9]]*\)"` | |
| 411 gcc_cv_gas_patch_version=`expr "$gcc_cv_gas_version" : "VERSION=[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)"` | |
| 412 case $gcc_cv_gas_patch_version in | |
| 413 "") gcc_cv_gas_patch_version="0" ;; | |
| 414 esac | |
| 415 gcc_cv_gas_vers=`expr \( \( $gcc_cv_gas_major_version \* 1000 \) \ | |
| 416 + $gcc_cv_gas_minor_version \) \* 1000 \ | |
| 417 + $gcc_cv_gas_patch_version` | |
| 418 ]) []dnl # _gcc_COMPUTE_GAS_VERSION | |
| 419 | |
| 420 dnl # gcc_GAS_VERSION_GTE_IFELSE([elf,] major, minor, patchlevel, | |
| 421 dnl # [command_if_true = :], [command_if_false = :]) | |
| 422 dnl # Check to see if the version of GAS is greater than or | |
| 423 dnl # equal to the specified version. | |
| 424 dnl # | |
| 425 dnl # The first ifelse() shortens the shell code if the patchlevel | |
| 426 dnl # is unimportant (the usual case). The others handle missing | |
| 427 dnl # commands. Note that the tests are structured so that the most | |
| 428 dnl # common version number cases are tested first. | |
| 429 AC_DEFUN([_gcc_GAS_VERSION_GTE_IFELSE], | |
| 430 [ifelse([$1], elf, | |
| 431 [if test $in_tree_gas_is_elf = yes \ | |
| 432 &&], | |
| 433 [if]) test $gcc_cv_gas_vers -ge `expr \( \( $2 \* 1000 \) + $3 \) \* 1000 + $4` | |
| 434 then dnl | |
| 435 ifelse([$5],,:,[$5])[]dnl | |
| 436 ifelse([$6],,,[ | |
| 437 else $6]) | |
| 438 fi]) | |
| 439 | |
| 440 AC_DEFUN([gcc_GAS_VERSION_GTE_IFELSE], | |
| 441 [AC_REQUIRE([_gcc_COMPUTE_GAS_VERSION])dnl | |
| 442 ifelse([$1], elf, [_gcc_GAS_VERSION_GTE_IFELSE($@)], | |
| 443 [_gcc_GAS_VERSION_GTE_IFELSE(,$@)])]) | |
| 444 | |
|
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445 dnl # gcc_GAS_FLAGS |
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446 dnl # Used by gcc_GAS_CHECK_FEATURE |
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447 dnl # |
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448 AC_DEFUN([gcc_GAS_FLAGS], |
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449 [AC_CACHE_CHECK([assembler flags], gcc_cv_as_flags, |
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450 [ case "$target" in |
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451 i[[34567]]86-*-linux*) |
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452 dnl Always pass --32 to ia32 Linux assembler. |
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453 gcc_cv_as_flags="--32" |
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454 ;; |
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455 *) |
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456 gcc_cv_as_flags=" " |
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457 ;; |
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458 esac]) |
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459 ]) |
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460 |
| 0 | 461 dnl gcc_GAS_CHECK_FEATURE(description, cv, [[elf,]major,minor,patchlevel], |
| 462 dnl [extra switches to as], [assembler input], | |
| 463 dnl [extra testing logic], [command if feature available]) | |
| 464 dnl | |
| 465 dnl Checks for an assembler feature. If we are building an in-tree | |
| 466 dnl gas, the feature is available if the associated assembler version | |
| 467 dnl is greater than or equal to major.minor.patchlevel. If not, then | |
| 468 dnl ASSEMBLER INPUT is fed to the assembler and the feature is available | |
| 469 dnl if assembly succeeds. If EXTRA TESTING LOGIC is not the empty string, | |
| 470 dnl then it is run instead of simply setting CV to "yes" - it is responsible | |
| 471 dnl for doing so, if appropriate. | |
| 472 AC_DEFUN([gcc_GAS_CHECK_FEATURE], | |
|
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473 [AC_REQUIRE([gcc_GAS_FLAGS])dnl |
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474 AC_CACHE_CHECK([assembler for $1], [$2], |
| 0 | 475 [[$2]=no |
| 476 ifelse([$3],,,[dnl | |
| 477 if test $in_tree_gas = yes; then | |
| 478 gcc_GAS_VERSION_GTE_IFELSE($3, [[$2]=yes]) | |
| 479 el])if test x$gcc_cv_as != x; then | |
| 480 echo ifelse(m4_substr([$5],0,1),[$], "[$5]", '[$5]') > conftest.s | |
|
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481 if AC_TRY_COMMAND([$gcc_cv_as $gcc_cv_as_flags $4 -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD]) |
| 0 | 482 then |
| 483 ifelse([$6],, [$2]=yes, [$6]) | |
| 484 else | |
| 485 echo "configure: failed program was" >&AS_MESSAGE_LOG_FD | |
| 486 cat conftest.s >&AS_MESSAGE_LOG_FD | |
| 487 fi | |
| 488 rm -f conftest.o conftest.s | |
| 489 fi]) | |
| 490 ifelse([$7],,,[dnl | |
| 491 if test $[$2] = yes; then | |
| 492 $7 | |
| 493 fi])]) | |
| 494 | |
| 495 dnl GCC_TARGET_TEMPLATE(KEY) | |
| 496 dnl ------------------------ | |
| 497 dnl Define KEY as a valid configure key on the target machine. | |
| 498 | |
| 499 m4_define([GCC_TARGET_TEMPLATE], | |
| 500 [m4_define([GCC_TARGET_TEMPLATE($1)],[])]) | |
| 501 | |
| 502 dnl AH_TEMPLATE(KEY, DESCRIPTION) | |
| 503 dnl ----------------------------- | |
| 504 dnl Issue an autoheader template for KEY, i.e., a comment composed of | |
| 505 dnl DESCRIPTION (properly wrapped), and then #undef KEY. Redefinition | |
| 506 dnl of the macro in autoheader.m4, to support definition of only a few | |
| 507 dnl keys while compiling target libraries. | |
| 508 | |
| 509 m4_define([AH_TEMPLATE], | |
| 510 [AH_VERBATIM([$1],m4_text_wrap([$2 */], [ ], [/* ]) | |
| 511 m4_ifdef([GCC_TARGET_TEMPLATE($1)],[],[#ifndef USED_FOR_TARGET | |
| 512 ])[#undef $1]m4_ifdef([GCC_TARGET_TEMPLATE($1)],[],[ | |
| 513 #endif | |
| 514 ]))]) | |
| 515 | |
| 516 dnl Make sure that build_exeext is looked for | |
| 517 AC_DEFUN([gcc_AC_BUILD_EXEEXT], [ | |
| 518 ac_executable_extensions="$build_exeext"]) | |
| 519 |