configure.ac revision 1.5
1dnl Process this file with autoconf to produce a configure script 2dnl 3dnl Copyright (C) 2012-2018 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 setting DT_RUNPATH instead of DT_RPATH by default 159ac_default_new_dtags=unset 160# Provide a configure time option to override our default. 161AC_ARG_ENABLE(new_dtags, 162 AS_HELP_STRING([--enable-new-dtags], 163 [set DT_RUNPATH instead of DT_RPATH by default])], 164[case "${enableval}" in 165 yes) ac_default_new_dtags=1 ;; 166 no) ac_default_new_dtags=0 ;; 167esac])dnl 168 169# Decide if -z relro should be enabled in ELF linker by default. 170ac_default_ld_z_relro=unset 171# Provide a configure time option to override our default. 172AC_ARG_ENABLE(relro, 173 AS_HELP_STRING([--enable-relro], 174 [enable -z relro in ELF linker by default]), 175[case "${enableval}" in 176 yes) ac_default_ld_z_relro=1 ;; 177 no) ac_default_ld_z_relro=0 ;; 178esac])dnl 179 180# Decide which "--hash-style" to use by default 181# Provide a configure time option to override our default. 182AC_ARG_ENABLE([default-hash-style], 183AS_HELP_STRING([--enable-default-hash-style={sysv,gnu,both}], 184 [use this default hash style]), 185[case "${enable_default_hash_style}" in 186 sysv | gnu | both) ;; 187 *) AC_MSG_ERROR([bad value ${enable_default_hash_style} for enable-default-hash-style option]) ;; 188esac], 189[case "${target}" in 190 # Enable gnu hash only on GNU targets, but not mips 191 mips*-*-*) enable_default_hash_style=sysv ;; 192 *-*-gnu* | *-*-linux* | *-*-nacl*) enable_default_hash_style=both ;; 193 *) enable_default_hash_style=sysv ;; 194esac]) 195 196case "${enable_default_hash_style}" in 197 sysv | both) ac_default_emit_sysv_hash=1 ;; 198 *) ac_default_emit_sysv_hash=0 ;; 199esac 200 201case "${enable_default_hash_style}" in 202 gnu | both) ac_default_emit_gnu_hash=1 ;; 203 *) ac_default_emit_gnu_hash=0 ;; 204esac 205 206AM_BINUTILS_WARNINGS 207 208AM_LC_MESSAGES 209 210AC_CONFIG_HEADERS([config.h:config.in]) 211 212# PR 14072 213AH_VERBATIM([00_CONFIG_H_CHECK], 214[/* Check that config.h is #included before system headers 215 (this works only for glibc, but that should be enough). */ 216#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__) 217# error config.h must be #included before system headers 218#endif 219#define __CONFIG_H__ 1]) 220 221if test -z "$target" ; then 222 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.) 223fi 224if test -z "$host" ; then 225 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.) 226fi 227 228# host-specific stuff: 229 230ALL_LINGUAS="bg da de es fi fr ga id it ru sr sv tr uk vi zh_CN zh_TW pt_BR" 231ZW_GNU_GETTEXT_SISTER_DIR 232AM_PO_SUBDIRS 233 234AC_EXEEXT 235 236AC_PROG_YACC 237AM_PROG_LEX 238 239AM_MAINTAINER_MODE 240AM_CONDITIONAL(GENINSRC_NEVER, false) 241ACX_PROG_CMP_IGNORE_INITIAL 242 243. ${srcdir}/configure.host 244 245AC_SUBST(HDEFINES) 246AC_SUBST(NATIVE_LIB_DIRS) 247 248AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h) 249AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h) 250ACX_HEADER_STRING 251AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid) 252AC_CHECK_FUNCS(open lseek close) 253AC_HEADER_DIRENT 254 255dnl AC_CHECK_HEADERS(sys/mman.h) 256AC_FUNC_MMAP 257 258AC_SEARCH_LIBS([dlopen], [dl]) 259AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes]) 260 261AC_ARG_ENABLE(initfini-array, 262 [ --enable-initfini-array use .init_array/.fini_array sections], 263 [], [ 264AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, 265 gcc_cv_initfini_array, [dnl 266 if test "x${build}" = "x${target}" ; then 267 AC_RUN_IFELSE([AC_LANG_SOURCE([ 268static int x = -1; 269int main (void) { return x; } 270int foo (void) { x = 0; } 271int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])], 272 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no], 273 [gcc_cv_initfini_array=no]) 274 else 275 gcc_cv_initfini_array=no 276 fi]) 277 enable_initfini_array=$gcc_cv_initfini_array 278]) 279AC_SUBST(enable_initfini_array) 280if test $enable_initfini_array = yes; then 281 AC_DEFINE(HAVE_INITFINI_ARRAY, 1, 282 [Define .init_array/.fini_array sections are available and working.]) 283fi 284 285AC_MSG_CHECKING(for a known getopt prototype in unistd.h) 286AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h, 287[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])], 288ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)]) 289AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h) 290if test $ld_cv_decl_getopt_unistd_h = yes; then 291 AC_DEFINE([HAVE_DECL_GETOPT], 1, 292 [Is the prototype for getopt in <unistd.h> in the expected format?]) 293fi 294 295BFD_BINARY_FOPEN 296 297AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ]) 298 299# When converting linker scripts into strings for use in emulation 300# files, use astring.sed if the compiler supports ANSI string 301# concatenation, or ostring.sed otherwise. This is to support the 302# broken Microsoft MSVC compiler, which limits the length of string 303# constants, while still supporting pre-ANSI compilers which do not 304# support string concatenation. 305AC_MSG_CHECKING([whether ANSI C string concatenation works]) 306AC_CACHE_VAL(ld_cv_string_concatenation, 307[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])], 308 ld_cv_string_concatenation=yes, 309 ld_cv_string_concatenation=no)]) 310AC_MSG_RESULT($ld_cv_string_concatenation) 311if test "$ld_cv_string_concatenation" = "yes"; then 312 STRINGIFY=astring.sed 313else 314 STRINGIFY=ostring.sed 315fi 316AC_SUBST(STRINGIFY) 317 318# target-specific stuff: 319 320all_targets= 321EMUL= 322all_emuls= 323all_emul_extras= 324all_libpath= 325 326dnl We need to get an arbitrary number of tdir definitions into 327dnl Makefile. We can't do it using AC_SUBST, because autoconf does 328dnl not permit literal newlines in an AC_SUBST variables. So we use a 329dnl file. 330rm -f tdirs 331 332# If the host is 64-bit, then we enable 64-bit targets by default. 333# This is consistent with what ../bfd/configure.ac does. 334if test x${want64} = xfalse; then 335 AC_CHECK_SIZEOF(void *) 336 if test "x${ac_cv_sizeof_void_p}" = "x8"; then 337 want64=true 338 fi 339fi 340 341elf_list_options=FALSE 342elf_shlib_list_options=FALSE 343elf_plt_unwind_list_options=FALSE 344for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'` 345do 346 if test "$targ_alias" = "all"; then 347 all_targets=true 348 elf_list_options=TRUE 349 elf_shlib_list_options=TRUE 350 elf_plt_unwind_list_options=TRUE 351 else 352 # Canonicalize the secondary target names. 353 result=`$ac_config_sub $targ_alias 2>/dev/null` 354 if test -n "$result"; then 355 targ=$result 356 else 357 targ=$targ_alias 358 fi 359 360 . ${srcdir}/configure.tgt 361 362 if test "$targ" = "$target"; then 363 EMUL=$targ_emul 364 fi 365 366 if test x${want64} = xfalse; then 367 . ${srcdir}/../bfd/config.bfd 368 fi 369 370 if test x${want64} = xtrue; then 371 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls" 372 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath" 373 fi 374 375 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do 376 case " $all_emuls " in 377 *" e${i}.o "*) ;; 378 *) 379 all_emuls="$all_emuls e${i}.o" 380 eval result=\$tdir_$i 381 test -z "$result" && result=$targ_alias 382 echo tdir_$i=$result >> tdirs 383 case "${i}" in 384 *elf*) 385 elf_list_options=TRUE 386 ;; 387 *) 388 if $GREP "TEMPLATE_NAME=elf32" ${srcdir}/emulparams/${i}.sh >/dev/null 2>/dev/null; then 389 elf_list_options=TRUE 390 fi 391 ;; 392 esac 393 if test "$elf_list_options" = "TRUE"; then 394 . ${srcdir}/emulparams/${i}.sh 395 if test x${GENERATE_SHLIB_SCRIPT} = xyes; then 396 elf_shlib_list_options=TRUE 397 fi 398 if test x${PLT_UNWIND} = xyes; then 399 elf_plt_unwind_list_options=TRUE 400 fi 401 fi 402 ;; 403 esac 404 done 405 406 for i in $targ_emul $targ_extra_libpath; do 407 case " $all_libpath " in 408 *" ${i} "*) ;; 409 *) 410 if test -z "$all_libpath"; then 411 all_libpath=${i} 412 else 413 all_libpath="$all_libpath ${i}" 414 fi 415 ;; 416 esac 417 done 418 419 for i in $targ_extra_ofiles; do 420 case " $all_emul_extras " in 421 *" ${i} "*) ;; 422 *) 423 all_emul_extras="$all_emul_extras ${i}" 424 ;; 425 esac 426 done 427 428 fi 429done 430 431if test x$ac_default_compressed_debug_sections = xyes ; then 432 AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.]) 433fi 434 435if test "${ac_default_new_dtags}" = unset; then 436 ac_default_new_dtags=0 437fi 438AC_DEFINE_UNQUOTED(DEFAULT_NEW_DTAGS, 439 $ac_default_new_dtags, 440 [Define to 1 if you want to set DT_RUNPATH instead of DT_RPATH by default.]) 441 442if test "${ac_default_ld_z_relro}" = unset; then 443 ac_default_ld_z_relro=0 444fi 445AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO, 446 $ac_default_ld_z_relro, 447 [Define to 1 if you want to enable -z relro in ELF linker by default.]) 448 449AC_DEFINE_UNQUOTED([DEFAULT_EMIT_SYSV_HASH], 450 [$ac_default_emit_sysv_hash], 451 [Define to 1 if you want to emit sysv hash in the ELF linker by default.]) 452 453AC_DEFINE_UNQUOTED([DEFAULT_EMIT_GNU_HASH], 454 [$ac_default_emit_gnu_hash], 455 [Define to 1 if you want to emit gnu hash in the ELF linker by default.]) 456 457AC_SUBST(elf_list_options) 458AC_SUBST(elf_shlib_list_options) 459AC_SUBST(elf_plt_unwind_list_options) 460AC_SUBST(EMUL) 461 462TDIRS=tdirs 463AC_SUBST_FILE(TDIRS) 464 465if test x${all_targets} = xtrue; then 466 if test x${want64} = xtrue; then 467 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)' 468 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)' 469 else 470 EMULATION_OFILES='$(ALL_EMULATIONS)' 471 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)' 472 fi 473else 474 EMULATION_OFILES=$all_emuls 475 EMUL_EXTRA_OFILES=$all_emul_extras 476fi 477AC_SUBST(EMULATION_OFILES) 478AC_SUBST(EMUL_EXTRA_OFILES) 479AC_SUBST(LIB_PATH) 480 481EMULATION_LIBPATH=$all_libpath 482AC_SUBST(EMULATION_LIBPATH) 483 484if test x${enable_static} = xno; then 485 TESTBFDLIB="-Wl,--rpath,../bfd/.libs ../bfd/.libs/libbfd.so" 486else 487 TESTBFDLIB="../bfd/.libs/libbfd.a" 488fi 489AC_SUBST(TESTBFDLIB) 490 491target_vendor=${target_vendor=$host_vendor} 492case "$target_vendor" in 493 hp) EXTRA_SHLIB_EXTENSION=".sl" ;; 494 *) EXTRA_SHLIB_EXTENSION= ;; 495esac 496 497case "$target_os" in 498 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;; 499esac 500 501if test x${EXTRA_SHLIB_EXTENSION} != x ; then 502 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION", 503 [Additional extension a shared object might have.]) 504fi 505 506dnl Required by html, pdf, install-pdf and install-html 507AC_SUBST(datarootdir) 508AC_SUBST(docdir) 509AC_SUBST(htmldir) 510AC_SUBST(pdfdir) 511 512AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in) 513AC_OUTPUT 514