1 dnl Process this file with autoconf to produce a configure script 2 dnl 3 dnl Copyright (C) 2012-2016 Free Software Foundation, Inc. 4 dnl 5 dnl This file is free software; you can redistribute it and/or modify 6 dnl it under the terms of the GNU General Public License as published by 7 dnl the Free Software Foundation; either version 3 of the License, or 8 dnl (at your option) any later version. 9 dnl 10 dnl This program is distributed in the hope that it will be useful, 11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of 12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 dnl GNU General Public License for more details. 14 dnl 15 dnl You should have received a copy of the GNU General Public License 16 dnl along with this program; see the file COPYING3. If not see 17 dnl <http://www.gnu.org/licenses/>. 18 dnl 19 20 AC_PREREQ(2.59) 21 m4_include([../bfd/version.m4]) 22 AC_INIT([ld], BFD_VERSION) 23 AC_CONFIG_SRCDIR(ldmain.c) 24 25 AC_CANONICAL_TARGET 26 AC_CANONICAL_BUILD 27 AC_ISC_POSIX 28 29 AM_INIT_AUTOMAKE 30 AM_MAINTAINER_MODE 31 32 AC_PROG_CC 33 AC_PROG_CXX 34 AC_PROG_GREP 35 AC_GNU_SOURCE 36 AC_USE_SYSTEM_EXTENSIONS 37 AC_PROG_INSTALL 38 39 LT_INIT 40 ACX_LARGEFILE 41 42 AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval) 43 AC_ARG_ENABLE(targets, 44 [ --enable-targets alternative target configurations], 45 [case "${enableval}" in 46 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all') 47 ;; 48 no) enable_targets= ;; 49 *) enable_targets=$enableval ;; 50 esac])dnl 51 AC_ARG_ENABLE(64-bit-bfd, 52 [ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)], 53 [case "${enableval}" in 54 yes) want64=true ;; 55 no) want64=false ;; 56 *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;; 57 esac],[want64=false])dnl 58 59 AC_ARG_WITH(sysroot, 60 [ --with-sysroot[=DIR] Search for usr/lib et al within DIR.], 61 [ 62 case ${with_sysroot} in 63 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;; 64 *) TARGET_SYSTEM_ROOT=$with_sysroot ;; 65 esac 66 67 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' 68 use_sysroot=yes 69 70 if test "x$prefix" = xNONE; then 71 test_prefix=/usr/local 72 else 73 test_prefix=$prefix 74 fi 75 if test "x$exec_prefix" = xNONE; then 76 test_exec_prefix=$test_prefix 77 else 78 test_exec_prefix=$exec_prefix 79 fi 80 case ${TARGET_SYSTEM_ROOT} in 81 "${test_prefix}"|"${test_prefix}/"*|\ 82 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ 83 '${prefix}'|'${prefix}/'*|\ 84 '${exec_prefix}'|'${exec_prefix}/'*) 85 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" 86 TARGET_SYSTEM_ROOT_DEFINE="$t" 87 ;; 88 esac 89 ], [ 90 use_sysroot=no 91 TARGET_SYSTEM_ROOT= 92 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"' 93 ]) 94 AC_SUBST(use_sysroot) 95 AC_SUBST(TARGET_SYSTEM_ROOT) 96 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) 97 98 AC_ARG_ENABLE([poison-system-directories], 99 AS_HELP_STRING([--enable-poison-system-directories], 100 [warn for use of native system library directories]),, 101 [enable_poison_system_directories=no]) 102 if test "x${enable_poison_system_directories}" = "xyes"; then 103 AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES], 104 [1], 105 [Define to warn for use of native system library directories]) 106 fi 107 108 dnl Use --enable-gold to decide if this linker should be the default. 109 dnl "install_as_default" is set to false if gold is the default linker. 110 dnl "installed_linker" is the installed BFD linker name. 111 AC_ARG_ENABLE(gold, 112 [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], 113 [case "${enableval}" in 114 default) 115 install_as_default=no 116 installed_linker=ld.bfd 117 ;; 118 yes|no) 119 install_as_default=yes 120 installed_linker=ld.bfd 121 ;; 122 *) 123 AC_MSG_ERROR([invalid --enable-gold argument]) 124 ;; 125 esac], 126 [install_as_default=yes 127 installed_linker=ld.bfd]) 128 AC_SUBST(install_as_default) 129 AC_SUBST(installed_linker) 130 131 AC_ARG_ENABLE([got], 132 AS_HELP_STRING([--enable-got=<type>], 133 [GOT handling scheme (target, single, negative, multigot)]), 134 [case "${enableval}" in 135 target | single | negative | multigot) got_handling=$enableval ;; 136 *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;; 137 esac], 138 [got_handling=target]) 139 140 case "${got_handling}" in 141 target) 142 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT], 143 [Define to choose default GOT handling scheme]) ;; 144 single) 145 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE], 146 [Define to choose default GOT handling scheme]) ;; 147 negative) 148 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE], 149 [Define to choose default GOT handling scheme]) ;; 150 multigot) 151 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT], 152 [Define to choose default GOT handling scheme]) ;; 153 *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;; 154 esac 155 156 # PR gas/19109 157 # Decide the default method for compressing debug sections. 158 ac_default_compressed_debug_sections=unset 159 # Provide a configure time option to override our default. 160 AC_ARG_ENABLE(compressed_debug_sections, 161 AS_HELP_STRING([--enable-compressed-debug-sections={all,ld,none}], 162 [compress debug sections by default])], 163 [case ,"${enableval}", in 164 ,yes, | ,all, | *,ld,*) ac_default_compressed_debug_sections=yes ;; 165 ,no, | ,none,) ac_default_compressed_debug_sections=no ;; 166 esac])dnl 167 168 # Decide if -z relro should be enabled in ELF linker by default. 169 ac_default_ld_z_relro=unset 170 # Provide a configure time option to override our default. 171 AC_ARG_ENABLE(relro, 172 AS_HELP_STRING([--enable-relro], 173 [enable -z relro in ELF linker by default]), 174 [case "${enableval}" in 175 yes) ac_default_ld_z_relro=1 ;; 176 no) ac_default_ld_z_relro=0 ;; 177 esac])dnl 178 179 AM_BINUTILS_WARNINGS 180 181 AM_LC_MESSAGES 182 183 AC_CONFIG_HEADERS([config.h:config.in]) 184 185 # PR 14072 186 AH_VERBATIM([00_CONFIG_H_CHECK], 187 [/* Check that config.h is #included before system headers 188 (this works only for glibc, but that should be enough). */ 189 #if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__) 190 # error config.h must be #included before system headers 191 #endif 192 #define __CONFIG_H__ 1]) 193 194 if test -z "$target" ; then 195 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.) 196 fi 197 if test -z "$host" ; then 198 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.) 199 fi 200 201 # host-specific stuff: 202 203 ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it uk" 204 ZW_GNU_GETTEXT_SISTER_DIR 205 AM_PO_SUBDIRS 206 207 AC_EXEEXT 208 209 AC_PROG_YACC 210 AM_PROG_LEX 211 212 AM_MAINTAINER_MODE 213 AM_CONDITIONAL(GENINSRC_NEVER, false) 214 ACX_PROG_CMP_IGNORE_INITIAL 215 216 . ${srcdir}/configure.host 217 218 AC_SUBST(HDEFINES) 219 AC_SUBST(HOSTING_CRT0) 220 AC_SUBST(HOSTING_SCRT0) 221 AC_SUBST(HOSTING_LIBS) 222 AC_SUBST(HOSTING_SLIBS) 223 AC_SUBST(NATIVE_LIB_DIRS) 224 225 AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h) 226 AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h) 227 ACX_HEADER_STRING 228 AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid) 229 AC_CHECK_FUNCS(open lseek close) 230 AC_HEADER_DIRENT 231 232 dnl AC_CHECK_HEADERS(sys/mman.h) 233 AC_FUNC_MMAP 234 235 AC_SEARCH_LIBS([dlopen], [dl]) 236 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes]) 237 238 AC_ARG_ENABLE(initfini-array, 239 [ --disable-initfini-array do not use .init_array/.fini_array sections], 240 [case "${enableval}" in 241 yes|no) ;; 242 *) AC_MSG_ERROR([invalid --enable-initfini-array argument]) ;; 243 esac], [enable_initfini_array=yes]) 244 AC_SUBST(enable_initfini_array) 245 if test $enable_initfini_array = yes; then 246 AC_DEFINE(HAVE_INITFINI_ARRAY, 1, 247 [Define .init_array/.fini_array sections are available and working.]) 248 fi 249 250 AC_MSG_CHECKING(for a known getopt prototype in unistd.h) 251 AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h, 252 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])], 253 ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)]) 254 AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h) 255 if test $ld_cv_decl_getopt_unistd_h = yes; then 256 AC_DEFINE([HAVE_DECL_GETOPT], 1, 257 [Is the prototype for getopt in <unistd.h> in the expected format?]) 258 fi 259 260 BFD_BINARY_FOPEN 261 262 AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ]) 263 264 # When converting linker scripts into strings for use in emulation 265 # files, use astring.sed if the compiler supports ANSI string 266 # concatenation, or ostring.sed otherwise. This is to support the 267 # broken Microsoft MSVC compiler, which limits the length of string 268 # constants, while still supporting pre-ANSI compilers which do not 269 # support string concatenation. 270 AC_MSG_CHECKING([whether ANSI C string concatenation works]) 271 AC_CACHE_VAL(ld_cv_string_concatenation, 272 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])], 273 ld_cv_string_concatenation=yes, 274 ld_cv_string_concatenation=no)]) 275 AC_MSG_RESULT($ld_cv_string_concatenation) 276 if test "$ld_cv_string_concatenation" = "yes"; then 277 STRINGIFY=astring.sed 278 else 279 STRINGIFY=ostring.sed 280 fi 281 AC_SUBST(STRINGIFY) 282 283 # target-specific stuff: 284 285 all_targets= 286 EMUL= 287 all_emuls= 288 all_emul_extras= 289 all_libpath= 290 291 dnl We need to get an arbitrary number of tdir definitions into 292 dnl Makefile. We can't do it using AC_SUBST, because autoconf does 293 dnl not permit literal newlines in an AC_SUBST variables. So we use a 294 dnl file. 295 rm -f tdirs 296 297 # If the host is 64-bit, then we enable 64-bit targets by default. 298 # This is consistent with what ../bfd/configure.ac does. 299 if test x${want64} = xfalse; then 300 AC_CHECK_SIZEOF(void *) 301 if test "x${ac_cv_sizeof_void_p}" = "x8"; then 302 want64=true 303 fi 304 fi 305 306 elf_list_options=FALSE 307 elf_shlib_list_options=FALSE 308 elf_plt_unwind_list_options=FALSE 309 for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'` 310 do 311 if test "$targ_alias" = "all"; then 312 all_targets=true 313 elf_list_options=TRUE 314 elf_shlib_list_options=TRUE 315 elf_plt_unwind_list_options=TRUE 316 else 317 # Canonicalize the secondary target names. 318 result=`$ac_config_sub $targ_alias 2>/dev/null` 319 if test -n "$result"; then 320 targ=$result 321 else 322 targ=$targ_alias 323 fi 324 325 . ${srcdir}/configure.tgt 326 327 if test "$targ" = "$target"; then 328 EMUL=$targ_emul 329 fi 330 331 if test x${want64} = xfalse; then 332 . ${srcdir}/../bfd/config.bfd 333 fi 334 335 if test x${want64} = xtrue; then 336 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls" 337 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath" 338 fi 339 340 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do 341 case " $all_emuls " in 342 *" e${i}.o "*) ;; 343 *) 344 all_emuls="$all_emuls e${i}.o" 345 eval result=\$tdir_$i 346 test -z "$result" && result=$targ_alias 347 echo tdir_$i=$result >> tdirs 348 case "${i}" in 349 *elf*) 350 elf_list_options=TRUE 351 ;; 352 *) 353 if $GREP "TEMPLATE_NAME=elf32" ${srcdir}/emulparams/${i}.sh >/dev/null 2>/dev/null; then 354 elf_list_options=TRUE 355 fi 356 ;; 357 esac 358 if test "$elf_list_options" = "TRUE"; then 359 . ${srcdir}/emulparams/${i}.sh 360 if test x${GENERATE_SHLIB_SCRIPT} = xyes; then 361 elf_shlib_list_options=TRUE 362 fi 363 if test x${PLT_UNWIND} = xyes; then 364 elf_plt_unwind_list_options=TRUE 365 fi 366 fi 367 ;; 368 esac 369 done 370 371 for i in $targ_emul $targ_extra_libpath; do 372 case " $all_libpath " in 373 *" ${i} "*) ;; 374 *) 375 if test -z "$all_libpath"; then 376 all_libpath=${i} 377 else 378 all_libpath="$all_libpath ${i}" 379 fi 380 ;; 381 esac 382 done 383 384 for i in $targ_extra_ofiles; do 385 case " $all_emul_extras " in 386 *" ${i} "*) ;; 387 *) 388 all_emul_extras="$all_emul_extras ${i}" 389 ;; 390 esac 391 done 392 393 fi 394 done 395 396 if test x$ac_default_compressed_debug_sections = xyes ; then 397 AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.]) 398 fi 399 400 if test "${ac_default_ld_z_relro}" = unset; then 401 ac_default_ld_z_relro=0 402 fi 403 AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO, 404 $ac_default_ld_z_relro, 405 [Define to 1 if you want to enable -z relro in ELF linker by default.]) 406 407 AC_SUBST(elf_list_options) 408 AC_SUBST(elf_shlib_list_options) 409 AC_SUBST(elf_plt_unwind_list_options) 410 AC_SUBST(EMUL) 411 412 TDIRS=tdirs 413 AC_SUBST_FILE(TDIRS) 414 415 if test x${all_targets} = xtrue; then 416 if test x${want64} = xtrue; then 417 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)' 418 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)' 419 else 420 EMULATION_OFILES='$(ALL_EMULATIONS)' 421 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)' 422 fi 423 else 424 EMULATION_OFILES=$all_emuls 425 EMUL_EXTRA_OFILES=$all_emul_extras 426 fi 427 AC_SUBST(EMULATION_OFILES) 428 AC_SUBST(EMUL_EXTRA_OFILES) 429 AC_SUBST(LIB_PATH) 430 431 EMULATION_LIBPATH=$all_libpath 432 AC_SUBST(EMULATION_LIBPATH) 433 434 if test x${enable_static} = xno; then 435 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so" 436 else 437 TESTBFDLIB="../bfd/.libs/libbfd.a" 438 fi 439 AC_SUBST(TESTBFDLIB) 440 441 target_vendor=${target_vendor=$host_vendor} 442 case "$target_vendor" in 443 hp) EXTRA_SHLIB_EXTENSION=".sl" ;; 444 *) EXTRA_SHLIB_EXTENSION= ;; 445 esac 446 447 case "$target_os" in 448 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;; 449 esac 450 451 if test x${EXTRA_SHLIB_EXTENSION} != x ; then 452 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION", 453 [Additional extension a shared object might have.]) 454 fi 455 456 dnl Required by html, pdf, install-pdf and install-html 457 AC_SUBST(datarootdir) 458 AC_SUBST(docdir) 459 AC_SUBST(htmldir) 460 AC_SUBST(pdfdir) 461 462 AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in) 463 AC_OUTPUT 464
