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