configure.ac revision 1.1
1dnl Process this file with autoconf to produce a configure script 2dnl 3dnl Copyright (C) 2012-2015 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 158AM_BINUTILS_WARNINGS 159 160AM_LC_MESSAGES 161 162AC_CONFIG_HEADERS([config.h:config.in]) 163 164# PR 14072 165AH_VERBATIM([00_CONFIG_H_CHECK], 166[/* Check that config.h is #included before system headers 167 (this works only for glibc, but that should be enough). */ 168#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__) 169# error config.h must be #included before system headers 170#endif 171#define __CONFIG_H__ 1]) 172 173if test -z "$target" ; then 174 AC_MSG_ERROR(Unrecognized target system type; please check config.sub.) 175fi 176if test -z "$host" ; then 177 AC_MSG_ERROR(Unrecognized host system type; please check config.sub.) 178fi 179 180# host-specific stuff: 181 182ALL_LINGUAS="fr sv tr es da vi zh_CN zh_TW ga fi id bg it uk" 183ZW_GNU_GETTEXT_SISTER_DIR 184AM_PO_SUBDIRS 185 186AC_EXEEXT 187 188AC_PROG_YACC 189AM_PROG_LEX 190 191AM_MAINTAINER_MODE 192AM_CONDITIONAL(GENINSRC_NEVER, false) 193ACX_PROG_CMP_IGNORE_INITIAL 194 195. ${srcdir}/configure.host 196 197AC_SUBST(HDEFINES) 198AC_SUBST(HOSTING_CRT0) 199AC_SUBST(HOSTING_SCRT0) 200AC_SUBST(HOSTING_LIBS) 201AC_SUBST(HOSTING_SLIBS) 202AC_SUBST(NATIVE_LIB_DIRS) 203 204AC_CHECK_HEADERS(string.h strings.h stdlib.h unistd.h elf-hints.h limits.h locale.h sys/param.h) 205AC_CHECK_HEADERS(fcntl.h sys/file.h sys/time.h sys/stat.h) 206ACX_HEADER_STRING 207AC_CHECK_FUNCS(glob mkstemp realpath sbrk setlocale waitpid) 208AC_CHECK_FUNCS(open lseek close) 209AC_HEADER_DIRENT 210 211dnl AC_CHECK_HEADERS(sys/mman.h) 212AC_FUNC_MMAP 213 214AC_SEARCH_LIBS([dlopen], [dl]) 215AM_CONDITIONAL([ENABLE_PLUGINS], [test x$plugins = xyes]) 216 217AC_ARG_ENABLE(initfini-array, 218 [ --enable-initfini-array use .init_array/.fini_array sections], 219 [], [ 220AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, 221 gcc_cv_initfini_array, [dnl 222 if test "x${build}" = "x${target}" ; then 223 AC_RUN_IFELSE([AC_LANG_SOURCE([ 224static int x = -1; 225int main (void) { return x; } 226int foo (void) { x = 0; } 227int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])], 228 [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no], 229 [gcc_cv_initfini_array=no]) 230 else 231 gcc_cv_initfini_array=no 232 fi]) 233 enable_initfini_array=$gcc_cv_initfini_array 234]) 235AC_SUBST(enable_initfini_array) 236if test $enable_initfini_array = yes; then 237 AC_DEFINE(HAVE_INITFINI_ARRAY, 1, 238 [Define .init_array/.fini_array sections are available and working.]) 239fi 240 241AC_MSG_CHECKING(for a known getopt prototype in unistd.h) 242AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h, 243[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])], 244ld_cv_decl_getopt_unistd_h=yes, ld_cv_decl_getopt_unistd_h=no)]) 245AC_MSG_RESULT($ld_cv_decl_getopt_unistd_h) 246if test $ld_cv_decl_getopt_unistd_h = yes; then 247 AC_DEFINE([HAVE_DECL_GETOPT], 1, 248 [Is the prototype for getopt in <unistd.h> in the expected format?]) 249fi 250 251BFD_BINARY_FOPEN 252 253AC_CHECK_DECLS([strstr, free, sbrk, getenv, environ]) 254 255# When converting linker scripts into strings for use in emulation 256# files, use astring.sed if the compiler supports ANSI string 257# concatenation, or ostring.sed otherwise. This is to support the 258# broken Microsoft MSVC compiler, which limits the length of string 259# constants, while still supporting pre-ANSI compilers which do not 260# support string concatenation. 261AC_MSG_CHECKING([whether ANSI C string concatenation works]) 262AC_CACHE_VAL(ld_cv_string_concatenation, 263[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [char *a = "a" "a";])], 264 ld_cv_string_concatenation=yes, 265 ld_cv_string_concatenation=no)]) 266AC_MSG_RESULT($ld_cv_string_concatenation) 267if test "$ld_cv_string_concatenation" = "yes"; then 268 STRINGIFY=astring.sed 269else 270 STRINGIFY=ostring.sed 271fi 272AC_SUBST(STRINGIFY) 273 274# target-specific stuff: 275 276all_targets= 277EMUL= 278all_emuls= 279all_emul_extras= 280all_libpath= 281 282dnl We need to get an arbitrary number of tdir definitions into 283dnl Makefile. We can't do it using AC_SUBST, because autoconf does 284dnl not permit literal newlines in an AC_SUBST variables. So we use a 285dnl file. 286rm -f tdirs 287 288# If the host is 64-bit, then we enable 64-bit targets by default. 289# This is consistent with what ../bfd/configure.ac does. 290if test x${want64} = xfalse; then 291 AC_CHECK_SIZEOF(void *) 292 if test "x${ac_cv_sizeof_void_p}" = "x8"; then 293 want64=true 294 fi 295fi 296 297elf_list_options=FALSE 298elf_shlib_list_options=FALSE 299elf_plt_unwind_list_options=FALSE 300for targ_alias in `echo $target_alias $enable_targets | sed 's/,/ /g'` 301do 302 if test "$targ_alias" = "all"; then 303 all_targets=true 304 elf_list_options=TRUE 305 elf_shlib_list_options=TRUE 306 elf_plt_unwind_list_options=TRUE 307 else 308 # Canonicalize the secondary target names. 309 result=`$ac_config_sub $targ_alias 2>/dev/null` 310 if test -n "$result"; then 311 targ=$result 312 else 313 targ=$targ_alias 314 fi 315 316 . ${srcdir}/configure.tgt 317 318 if test "$targ" = "$target"; then 319 EMUL=$targ_emul 320 fi 321 322 if test x${want64} = xfalse; then 323 . ${srcdir}/../bfd/config.bfd 324 fi 325 326 if test x${want64} = xtrue; then 327 targ_extra_emuls="$targ_extra_emuls $targ64_extra_emuls" 328 targ_extra_libpath="$targ_extra_libpath $targ64_extra_libpath" 329 fi 330 331 for i in $targ_emul $targ_extra_emuls $targ_extra_libpath; do 332 case " $all_emuls " in 333 *" e${i}.o "*) ;; 334 *) 335 all_emuls="$all_emuls e${i}.o" 336 eval result=\$tdir_$i 337 test -z "$result" && result=$targ_alias 338 echo tdir_$i=$result >> tdirs 339 case "${i}" in 340 *elf*) 341 elf_list_options=TRUE 342 ;; 343 *) 344 if $GREP "TEMPLATE_NAME=elf32" ${srcdir}/emulparams/${i}.sh >/dev/null 2>/dev/null; then 345 elf_list_options=TRUE 346 fi 347 ;; 348 esac 349 if test "$elf_list_options" = "TRUE"; then 350 . ${srcdir}/emulparams/${i}.sh 351 if test x${GENERATE_SHLIB_SCRIPT} = xyes; then 352 elf_shlib_list_options=TRUE 353 fi 354 if test x${PLT_UNWIND} = xyes; then 355 elf_plt_unwind_list_options=TRUE 356 fi 357 fi 358 ;; 359 esac 360 done 361 362 for i in $targ_emul $targ_extra_libpath; do 363 case " $all_libpath " in 364 *" ${i} "*) ;; 365 *) 366 if test -z "$all_libpath"; then 367 all_libpath=${i} 368 else 369 all_libpath="$all_libpath ${i}" 370 fi 371 ;; 372 esac 373 done 374 375 for i in $targ_extra_ofiles; do 376 case " $all_emul_extras " in 377 *" ${i} "*) ;; 378 *) 379 all_emul_extras="$all_emul_extras ${i}" 380 ;; 381 esac 382 done 383 384 fi 385done 386 387if test x$ac_default_compressed_debug_sections == xyes ; then 388 AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.]) 389fi 390 391AC_SUBST(elf_list_options) 392AC_SUBST(elf_shlib_list_options) 393AC_SUBST(elf_plt_unwind_list_options) 394AC_SUBST(EMUL) 395 396TDIRS=tdirs 397AC_SUBST_FILE(TDIRS) 398 399if test x${all_targets} = xtrue; then 400 if test x${want64} = xtrue; then 401 EMULATION_OFILES='$(ALL_EMULATIONS) $(ALL_64_EMULATIONS)' 402 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES) $(ALL_64_EMUL_EXTRA_OFILES)' 403 else 404 EMULATION_OFILES='$(ALL_EMULATIONS)' 405 EMUL_EXTRA_OFILES='$(ALL_EMUL_EXTRA_OFILES)' 406 fi 407else 408 EMULATION_OFILES=$all_emuls 409 EMUL_EXTRA_OFILES=$all_emul_extras 410fi 411AC_SUBST(EMULATION_OFILES) 412AC_SUBST(EMUL_EXTRA_OFILES) 413AC_SUBST(LIB_PATH) 414 415EMULATION_LIBPATH=$all_libpath 416AC_SUBST(EMULATION_LIBPATH) 417 418if test x${enable_static} = xno; then 419 TESTBFDLIB="--rpath ../bfd/.libs ../bfd/.libs/libbfd.so" 420else 421 TESTBFDLIB="../bfd/.libs/libbfd.a" 422fi 423AC_SUBST(TESTBFDLIB) 424 425target_vendor=${target_vendor=$host_vendor} 426case "$target_vendor" in 427 hp) EXTRA_SHLIB_EXTENSION=".sl" ;; 428 *) EXTRA_SHLIB_EXTENSION= ;; 429esac 430 431case "$target_os" in 432 lynxos) EXTRA_SHLIB_EXTENSION=".a" ;; 433esac 434 435if test x${EXTRA_SHLIB_EXTENSION} != x ; then 436 AC_DEFINE_UNQUOTED(EXTRA_SHLIB_EXTENSION, "$EXTRA_SHLIB_EXTENSION", 437 [Additional extension a shared object might have.]) 438fi 439 440dnl Required by html, pdf, install-pdf and install-html 441AC_SUBST(datarootdir) 442AC_SUBST(docdir) 443AC_SUBST(htmldir) 444AC_SUBST(pdfdir) 445 446AC_CONFIG_FILES(Makefile po/Makefile.in:po/Make-in) 447AC_OUTPUT 448