1dnl Process this file with autoconf to produce a configure script 2dnl 3dnl Copyright (C) 2012-2014 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_GNU_SOURCE 35AC_USE_SYSTEM_EXTENSIONS 36AC_PROG_INSTALL 37 38LT_INIT 39ACX_LARGEFILE 40 41AC_ARG_WITH(lib-path, [ --with-lib-path=dir1:dir2... set default LIB_PATH],LIB_PATH=$withval) 42AC_ARG_ENABLE(targets, 43[ --enable-targets alternative target configurations], 44[case "${enableval}" in 45 yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all') 46 ;; 47 no) enable_targets= ;; 48 *) enable_targets=$enableval ;; 49esac])dnl 50AC_ARG_ENABLE(64-bit-bfd, 51[ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)], 52[case "${enableval}" in 53 yes) want64=true ;; 54 no) want64=false ;; 55 *) AC_MSG_ERROR(bad value ${enableval} for 64-bit-bfd option) ;; 56esac],[want64=false])dnl 57 58AC_ARG_WITH(sysroot, 59[ --with-sysroot[=DIR] Search for usr/lib et al within DIR.], 60[ 61 case ${with_sysroot} in 62 yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;; 63 *) TARGET_SYSTEM_ROOT=$with_sysroot ;; 64 esac 65 66 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' 67 use_sysroot=yes 68 69 if test "x$prefix" = xNONE; then 70 test_prefix=/usr/local 71 else 72 test_prefix=$prefix 73 fi 74 if test "x$exec_prefix" = xNONE; then 75 test_exec_prefix=$test_prefix 76 else 77 test_exec_prefix=$exec_prefix 78 fi 79 case ${TARGET_SYSTEM_ROOT} in 80 "${test_prefix}"|"${test_prefix}/"*|\ 81 "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ 82 '${prefix}'|'${prefix}/'*|\ 83 '${exec_prefix}'|'${exec_prefix}/'*) 84 t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" 85 TARGET_SYSTEM_ROOT_DEFINE="$t" 86 ;; 87 esac 88], [ 89 use_sysroot=no 90 TARGET_SYSTEM_ROOT= 91 TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"\"' 92]) 93AC_SUBST(use_sysroot) 94AC_SUBST(TARGET_SYSTEM_ROOT) 95AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) 96 97AC_ARG_ENABLE([poison-system-directories], 98 AS_HELP_STRING([--enable-poison-system-directories], 99 [warn for use of native system library directories]),, 100 [enable_poison_system_directories=no]) 101if test "x${enable_poison_system_directories}" = "xyes"; then 102 AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES], 103 [1], 104 [Define to warn for use of native system library directories]) 105fi 106 107dnl Use --enable-gold to decide if this linker should be the default. 108dnl "install_as_default" is set to false if gold is the default linker. 109dnl "installed_linker" is the installed BFD linker name. 110AC_ARG_ENABLE(gold, 111[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], 112[case "${enableval}" in 113 default) 114 install_as_default=no 115 installed_linker=ld.bfd 116 ;; 117 yes|no) 118 install_as_default=yes 119 installed_linker=ld.bfd 120 ;; 121 *) 122 AC_MSG_ERROR([invalid --enable-gold argument]) 123 ;; 124 esac], 125[install_as_default=yes 126 installed_linker=ld.bfd]) 127AC_SUBST(install_as_default) 128AC_SUBST(installed_linker) 129 130AC_ARG_ENABLE([got], 131AS_HELP_STRING([--enable-got=<type>], 132 [GOT handling scheme (target, single, negative, multigot)]), 133[case "${enableval}" in 134 target | single | negative | multigot) got_handling=$enableval ;; 135 *) AC_MSG_ERROR(bad value ${enableval} for --enable-got option) ;; 136esac], 137[got_handling=target]) 138 139case "${got_handling}" in 140 target) 141 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_TARGET_DEFAULT], 142 [Define to choose default GOT handling scheme]) ;; 143 single) 144 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_SINGLE], 145 [Define to choose default GOT handling scheme]) ;; 146 negative) 147 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_NEGATIVE], 148 [Define to choose default GOT handling scheme]) ;; 149 multigot) 150 AC_DEFINE([GOT_HANDLING_DEFAULT], [GOT_HANDLING_MULTIGOT], 151 [Define to choose default GOT handling scheme]) ;; 152 *) AC_MSG_ERROR(bad value ${got_handling} for --enable-got option) ;; 153esac 154 155AM_BINUTILS_WARNINGS 156 157AM_LC_MESSAGES 158 159AC_CONFIG_HEADERS([config.h:config.in]) 160 161# PR 14072 162AH_VERBATIM([00_CONFIG_H_CHECK], 163[/* Check that config.h is #included before system headers 164 (this works only for glibc, but that should be enough). */ 165#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__) 166# error config.h must be #included before system headers 167#endif 168#define __CONFIG_H__ 1]) 169 170if test -z "$target" ; then 171 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.) 172fi 173if test -z "$host" ; then 174 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.) 175fi 176 177# host-specific stuff: 178 179ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it uk" 180ZW_GNU_GETTEXT_SISTER_DIR 181AM_PO_SUBDIRS 182 183AC_EXEEXT 184 185AC_PROG_YACC 186AM_PROG_LEX 187 188AM_MAINTAINER_MODE 189AM_CONDITIONAL(GENINSRC_NEVER, false) 190ACX_PROG_CMP_IGNORE_INITIAL 191 192. ${srcdir}/configure.host 193 194AC_SUBST(HDEFINES) 195AC_SUBST(HOSTING_CRT0) 196AC_SUBST(HOSTING_SCRT0) 197AC_SUBST(HOSTING_LIBS) 198AC_SUBST(HOSTING_SLIBS) 199AC_SUBST(NATIVE_LIB_DIRS) 200 201AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h) 202AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h) 203ACX_HEADER_STRING 204AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid) 205AC_CHECK_FUNCS(open lseek close) 206AC_HEADER_DIRENT 207 208AC_SEARCH_LIBS([dlopen], [dl]) 209AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes]) 210 211AC_ARG_ENABLE(initfini-array, 212 [ --enable-initfini-array use .init_array/.fini_array sections], 213 [], [ 214AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, 215 gcc_cv_initfini_array, [dnl 216 if test "x${build}" = "x${target}" ; then 217 AC_RUN_IFELSE([AC_LANG_SOURCE([ 218static int x = -1; 219int main (void) { return x; } 220int foo (void) { x = 0; } 221int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])], 222 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no], 223 [gcc_cv_initfini_array=no]) 224 else 225 gcc_cv_initfini_array=no 226 fi]) 227 enable_initfini_array=$gcc_cv_initfini_array 228]) 229AC_SUBST(enable_initfini_array) 230if test $enable_initfini_array = yes; then 231 AC_DEFINE(HAVE_INITFINI_ARRAY, 1, 232 [Define .init_array/.fini_array sections are available and working.]) 233fi 234 235AC_MSG_CHECKING(for a known getopt prototype in unistd.h) 236AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h, 237[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])], 238ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)]) 239AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h) 240if test $ld_cv_decl_getopt_unistd_h = yes; then 241 AC_DEFINE([HAVE_DECL_GETOPT], 1, 242 [Is the prototype for getopt in <unistd.h> in the expected format?]) 243fi 244 245BFD_BINARY_FOPEN 246 247AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ]) 248 249# Link in zlib if we can. This is needed only for the bootstrap tests 250# right now, since those tests use libbfd, which depends on zlib. 251AM_ZLIB 252 253# When converting linker scripts into strings for use in emulation 254# files, use astring.sed if the compiler supports ANSI string 255# concatenation, or ostring.sed otherwise. This is to support the 256# broken Microsoft MSVC compiler, which limits the length of string 257# constants, while still supporting pre-ANSI compilers which do not 258# support string concatenation. 259AC_MSG_CHECKING([whether ANSI C string concatenation works]) 260AC_CACHE_VAL(ld_cv_string_concatenation, 261[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])], 262 ld_cv_string_concatenation=yes, 263 ld_cv_string_concatenation=no)]) 264AC_MSG_RESULT($ld_cv_string_concatenation) 265if test "$ld_cv_string_concatenation" = "yes"; then 266 STRINGIFY=astring.sed 267else 268 STRINGIFY=ostring.sed 269fi 270AC_SUBST(STRINGIFY) 271 272# target-specific stuff: 273 274all_targets= 275EMUL= 276all_emuls= 277all_emul_extras= 278all_libpath= 279 280dnl We need to get an arbitrary number of tdir definitions into 281dnl Makefile. We can't do it using AC_SUBST, because autoconf does 282dnl not permit literal newlines in an AC_SUBST variables. So we use a 283dnl file. 284rm -f tdirs 285 286# If the host is 64-bit, then we enable 64-bit targets by default. 287# This is consistent with what ../bfd/configure.ac does. 288if test x${want64} = xfalse; then 289 AC_CHECK_SIZEOF(void *) 290 if test "x${ac_cv_sizeof_void_p}" = "x8"; then 291 want64=true 292 fi 293fi 294 295for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'` 296do 297 if test "$targ_alias" = "all"; then 298 all_targets=true 299 else 300 # Canonicalize the secondary target names. 301 result=`$ac_config_sub $targ_alias 2>/dev/null` 302 if test -n "$result"; then 303 targ=$result 304 else 305 targ=$targ_alias 306 fi 307 308 . ${srcdir}/configure.tgt 309 310 if test "$targ" = "$target"; then 311 EMUL=$targ_emul 312 fi 313 314 if test x${want64} = xfalse; then 315 . ${srcdir}/../bfd/config.bfd 316 fi 317 318 if test x${want64} = xtrue; then 319 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls" 320 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath" 321 fi 322 323 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do 324 case " $all_emuls " in 325 *" e${i}.o "*) ;; 326 *) 327 all_emuls="$all_emuls e${i}.o" 328 eval result=\$tdir_$i 329 test -z "$result" && result=$targ_alias 330 echo tdir_$i=$result >> tdirs 331 ;; 332 esac 333 done 334 335 for i in $targ_emul $targ_extra_libpath; do 336 case " $all_libpath " in 337 *" ${i} "*) ;; 338 *) 339 if test -z "$all_libpath"; then 340 all_libpath=${i} 341 else 342 all_libpath="$all_libpath ${i}" 343 fi 344 ;; 345 esac 346 done 347 348 for i in $targ_extra_ofiles; do 349 case " $all_emul_extras " in 350 *" ${i} "*) ;; 351 *) 352 all_emul_extras="$all_emul_extras ${i}" 353 ;; 354 esac 355 done 356 357 fi 358done 359 360AC_SUBST(EMUL) 361 362TDIRS=tdirs 363AC_SUBST_FILE(TDIRS) 364 365if test x${all_targets} = xtrue; then 366 if test x${want64} = xtrue; then 367 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)' 368 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)' 369 else 370 EMULATION_OFILES='$(ALL_EMULATIONS)' 371 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)' 372 fi 373else 374 EMULATION_OFILES=$all_emuls 375 EMUL_EXTRA_OFILES=$all_emul_extras 376fi 377AC_SUBST(EMULATION_OFILES) 378AC_SUBST(EMUL_EXTRA_OFILES) 379AC_SUBST(LIB_PATH) 380 381EMULATION_LIBPATH=$all_libpath 382AC_SUBST(EMULATION_LIBPATH) 383 384if test x${enable_static} = xno; then 385 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so" 386else 387 TESTBFDLIB="../bfd/.libs/libbfd.a" 388fi 389AC_SUBST(TESTBFDLIB) 390 391target_vendor=${target_vendor=$host_vendor} 392case "$target_vendor" in 393 hp) EXTRA_SHLIB_EXTENSION=".sl" ;; 394 *) EXTRA_SHLIB_EXTENSION= ;; 395esac 396 397case "$target_os" in 398 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;; 399esac 400 401if test x${EXTRA_SHLIB_EXTENSION} != x ; then 402 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION", 403 [Additional extension a shared object might have.]) 404fi 405 406dnl Required by html, pdf, install-pdf and install-html 407AC_SUBST(datarootdir) 408AC_SUBST(docdir) 409AC_SUBST(htmldir) 410AC_SUBST(pdfdir) 411 412AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in) 413AC_OUTPUT 414