1dnl Process this file with autoconf to produce a configure script. 2 3sinclude(../config/enable.m4) 4sinclude(../config/tls.m4) 5sinclude(../config/acx.m4) 6sinclude(../config/no-executables.m4) 7sinclude(../config/lib-ld.m4) 8sinclude(../config/override.m4) 9sinclude(../config/picflag.m4) 10sinclude(../config/dfp.m4) 11sinclude(../config/unwind_ipinfo.m4) 12sinclude(../config/gthr.m4) 13sinclude(../config/sjlj.m4) 14sinclude(../config/cet.m4) 15 16AC_INIT([GNU C Runtime Library], 1.0,,[libgcc]) 17AC_CONFIG_SRCDIR([static-object.mk]) 18 19# The libgcc should not depend on any header files 20AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS], 21 [m4_divert_text([DEFAULTS], 22 [ac_includes_default='/* none */'])]) 23 24AC_ARG_WITH(target-subdir, 25[ --with-target-subdir=SUBDIR Configuring in a subdirectory for target]) 26AC_ARG_WITH(cross-host, 27[ --with-cross-host=HOST Configuring with a cross compiler]) 28AC_ARG_WITH(ld, 29[ --with-ld arrange to use the specified ld (full pathname)]) 30 31if test "${srcdir}" = "."; then 32 if test -n "${with_build_subdir}"; then 33 libgcc_topdir="${srcdir}/../.." 34 with_target_subdir= 35 elif test -z "${with_target_subdir}"; then 36 libgcc_topdir="${srcdir}/.." 37 else 38 if test "${with_target_subdir}" != "."; then 39 libgcc_topdir="${srcdir}/${with_multisrctop}../.." 40 else 41 libgcc_topdir="${srcdir}/${with_multisrctop}.." 42 fi 43 fi 44else 45 libgcc_topdir="${srcdir}/.." 46fi 47AC_SUBST(libgcc_topdir) 48AC_CONFIG_AUX_DIR($libgcc_topdir) 49AC_CONFIG_HEADER(auto-target.h:config.in) 50 51AC_ARG_ENABLE(shared, 52[ --disable-shared don't provide a shared libgcc], 53[ 54 case $enable_shared in 55 yes | no) ;; 56 *) 57 enable_shared=no 58 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:," 59 for pkg in $enableval; do 60 if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then 61 enable_shared=yes 62 fi 63 done 64 IFS="$ac_save_ifs" 65 ;; 66 esac 67], [enable_shared=yes]) 68AC_SUBST(enable_shared) 69 70AC_ARG_ENABLE(gcov, 71[ --disable-gcov don't provide libgcov and related host tools], 72[], [enable_gcov=yes]) 73AC_SUBST(enable_gcov) 74 75AC_ARG_ENABLE(vtable-verify, 76[ --enable-vtable-verify Enable vtable verification feature ], 77[case "$enableval" in 78 yes) enable_vtable_verify=yes ;; 79 no) enable_vtable_verify=no ;; 80 *) enable_vtable_verify=no;; 81 esac], 82[enable_vtable_verify=no]) 83AC_SUBST(enable_vtable_verify) 84 85AC_ARG_WITH(aix-soname, 86[AS_HELP_STRING([--with-aix-soname=aix|svr4|both], 87 [shared library versioning (aka "SONAME") variant to provide on AIX])], 88[case "${host}:${enable_shared}" in 89 power*-*-aix[[5-9]]*:yes) 90 AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc]) 91 case ${withval} in 92 aix|svr4|both) ;; 93 *) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);; 94 esac 95 AC_MSG_RESULT($withval) 96 ;; 97 *) with_aix_soname=aix ;; 98 esac 99], [with_aix_soname=aix]) 100AC_SUBST(with_aix_soname) 101 102GCC_PICFLAG 103AC_SUBST(PICFLAG) 104 105AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 106AC_ARG_ENABLE(version-specific-runtime-libs, 107[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], 108[case "$enableval" in 109 yes) version_specific_libs=yes ;; 110 no) version_specific_libs=no ;; 111 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 112 esac], 113[version_specific_libs=no]) 114AC_MSG_RESULT($version_specific_libs) 115 116AC_ARG_WITH(slibdir, 117[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]], 118slibdir="$with_slibdir", 119if test "${version_specific_libs}" = yes; then 120 slibdir='$(libsubdir)' 121elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then 122 slibdir='$(exec_prefix)/$(host_noncanonical)/lib' 123else 124 slibdir='$(libdir)' 125fi) 126AC_SUBST(slibdir) 127 128# Command-line options. 129# Very limited version of AC_MAINTAINER_MODE. 130AC_ARG_ENABLE([maintainer-mode], 131 [AC_HELP_STRING([--enable-maintainer-mode], 132 [enable make rules and dependencies not useful (and 133 sometimes confusing) to the casual installer])], 134 [case ${enable_maintainer_mode} in 135 yes) MAINT='' ;; 136 no) MAINT='#' ;; 137 *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;; 138 esac 139 maintainer_mode=${enableval}], 140 [MAINT='#']) 141AC_SUBST([MAINT])dnl 142 143AC_PROG_INSTALL 144 145AC_PROG_AWK 146# We need awk; bail out if it's missing. 147case ${AWK} in 148 "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; 149esac 150 151AC_CANONICAL_HOST 152ACX_NONCANONICAL_HOST 153ACX_NONCANONICAL_TARGET 154GCC_TOPLEV_SUBDIRS 155 156# Calculate toolexeclibdir 157# Also toolexecdir, though it's only used in toolexeclibdir 158case ${version_specific_libs} in 159 yes) 160 # Need the gcc compiler version to know where to install libraries 161 # and header files if --enable-version-specific-runtime-libs option 162 # is selected. 163 toolexecdir='$(libdir)/gcc/$(target_noncanonical)' 164 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' 165 ;; 166 no) 167 if test -n "$with_cross_host" && 168 test x"$with_cross_host" != x"no"; then 169 # Install a library built with a cross compiler in tooldir, not libdir. 170 toolexecdir='$(exec_prefix)/$(target_noncanonical)' 171 toolexeclibdir='$(toolexecdir)/lib' 172 else 173 toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)' 174 toolexeclibdir='$(libdir)' 175 fi 176 multi_os_directory=`$CC -print-multi-os-directory` 177 case $multi_os_directory in 178 .) ;; # Avoid trailing /. 179 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; 180 esac 181 ;; 182esac 183AC_SUBST(toolexecdir) 184AC_SUBST(toolexeclibdir) 185 186dnl These must be called before AM_PROG_LIBTOOL, because it may want 187dnl to call AC_CHECK_PROG. 188AC_CHECK_TOOL(AR, ar) 189AC_CHECK_TOOL(LIPO, lipo, :) 190AC_CHECK_TOOL(NM, nm) 191AC_CHECK_TOOL(RANLIB, ranlib, :) 192AC_CHECK_TOOL(STRIP, strip, :) 193AC_PROG_LN_S 194 195GCC_NO_EXECUTABLES 196AC_PROG_CC 197AC_PROG_CPP_WERROR 198 199AC_SYS_LARGEFILE 200 201AC_CHECK_SIZEOF([double]) 202AC_CHECK_SIZEOF([long double]) 203AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8]) 204AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8]) 205AC_SUBST(double_type_size) 206AC_SUBST(long_double_type_size) 207 208AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \ 209 unistd.h sys/stat.h sys/types.h \ 210 string.h strings.h memory.h) 211AC_HEADER_STDC 212 213# Check for decimal float support. 214AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], 215 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 216#include <fenv.h> 217]], [[ 218_Decimal32 x; 219int fe_except = 220 FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; 221]])], 222 [libgcc_cv_dfp=yes], 223 [libgcc_cv_dfp=no])]) 224decimal_float=$libgcc_cv_dfp 225AC_SUBST(decimal_float) 226 227GCC_AC_ENABLE_DECIMAL_FLOAT([$host]) 228 229# Check for fixed-point support. 230AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point], 231 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])], 232 [libgcc_cv_fixed_point=yes], 233 [libgcc_cv_fixed_point=no])]) 234fixed_point=$libgcc_cv_fixed_point 235AC_SUBST(fixed_point) 236 237# For platforms with the unwind ABI which includes an unwind library, 238# libunwind, we can choose to use the system libunwind. 239# config.gcc also contains tests of with_system_libunwind. 240GCC_CHECK_UNWIND_GETIPINFO 241 242# Check if the compiler is configured for setjmp/longjmp exceptions. 243GCC_CHECK_SJLJ_EXCEPTIONS 244 245GCC_CET_FLAGS(CET_FLAGS) 246AC_SUBST(CET_FLAGS) 247 248AC_ARG_ENABLE([explicit-exception-frame-registration], 249 [AC_HELP_STRING([--enable-explicit-exception-frame-registration], 250 [register exception tables explicitly at module start, for use 251 e.g. for compatibility with installations without PT_GNU_EH_FRAME support])], 252[ 253force_explicit_eh_registry= 254if test "$enable_explicit_exception_frame_registration" = yes; then 255 if test $ac_cv_sjlj_exceptions = yes; then 256 AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration 257 with setjmp/longjmp exceptions]) 258 fi 259 force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS 260fi 261]) 262AC_SUBST([force_explicit_eh_registry]) 263 264AC_LIB_PROG_LD_GNU 265 266AC_MSG_CHECKING([for thread model used by GCC]) 267target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` 268AC_MSG_RESULT([$target_thread_file]) 269 270# Check for assembler CFI support. 271AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], 272 [AC_COMPILE_IFELSE( 273[AC_LANG_SOURCE([asm("\n\ 274 .text\n\ 275 .cfi_startproc\n\ 276 .cfi_personality 0, symbol\n\ 277 .cfi_endproc");])], 278 [libgcc_cv_cfi=yes], 279 [libgcc_cv_cfi=no])]) 280 281# Check 32bit or 64bit. In the case of MIPS, this really determines the 282# word size rather than the address size. 283cat > conftest.c <<EOF 284#if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ 285 || defined(__mips64) 286host_address=64 287#else 288host_address=32 289#endif 290EOF 291eval `${CC-cc} -E conftest.c | grep host_address=` 292rm -f conftest.c 293 294case ${host} in 295mips*-*-*) 296 AC_CACHE_CHECK([whether the target is hard-float], 297 [libgcc_cv_mips_hard_float], 298 [AC_COMPILE_IFELSE( 299 [AC_LANG_SOURCE([#ifndef __mips_hard_float 300 #error FOO 301 #endif 302 ])], 303 [libgcc_cv_mips_hard_float=yes], 304 [libgcc_cv_mips_hard_float=no])]) 305esac 306 307case ${host} in 308*-*-solaris2*) 309 # Check for system-provided CRTs on Solaris 11.4. 310 AC_CACHE_CHECK([system-provided CRTs on Solaris], 311 [libgcc_cv_solaris_crts], 312 [libgcc_cv_solaris_crts=no 313 libgcc_sysroot="`${CC} -print-sysroot`" 314 libgcc_libdir="$libgcc_sysroot/usr/lib" 315 # At the time they were added, gcrt1.o became a symlink for backwards 316 # compatibility on x86, while crt1.o was added on sparc, so check for that. 317 case ${host} in 318 i?86-*-solaris2* | x86_64-*-solaris2*) 319 if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi 320 ;; 321 sparc*-*-solaris2*) 322 if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi 323 ;; 324 esac]) 325 if test $libgcc_cv_solaris_crts = yes; then 326 AC_DEFINE(HAVE_SOLARIS_CRTS, 1, 327 [Define if the system-provided CRTs are present on Solaris.]) 328 fi 329 ;; 330esac 331 332# Determine the version of glibc, if any, used on the target. 333AC_MSG_CHECKING([for target glibc version]) 334AC_ARG_WITH([glibc-version], 335 [AS_HELP_STRING([--with-glibc-version=M.N], 336 [assume GCC used with glibc version M.N or later])], [ 337if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then 338 glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` 339 glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` 340else 341 AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) 342fi], [ 343AC_COMPUTE_INT([glibc_version_major], [__GLIBC__], 344 [#include <features.h>], 345 [glibc_version_major=0]) 346AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__], 347 [#include <features.h>], 348 [glibc_version_minor=0])]) 349AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) 350 351# Determine floating-point type for powerpc*-*-linux*. 352# Single-precision-only FPRs are not a supported configuration for 353# this target, so are not allowed for in this test. 354case ${host} in 355powerpc*-*-linux*) 356 cat > conftest.c <<EOF 357#ifdef __powerpc64__ 358ppc_fp_type=64 359#elif defined _SOFT_FLOAT 360ppc_fp_type=soft 361#elif defined _SOFT_DOUBLE 362ppc_fp_type=e500v1 363#elif defined __NO_FPRS__ 364ppc_fp_type=e500v2 365#else 366ppc_fp_type=hard 367#endif 368EOF 369eval `${CC-cc} -E conftest.c | grep ppc_fp_type=` 370rm -f conftest.c 371# glibc 2.19 and later provide all the soft-fp functions, with proper 372# interactions with <fenv.h> exception and rounding mode handling, so 373# make libgcc's versions into compat symbols if a recent enough glibc 374# version is being used. 375ppc_fp_compat= 376case ${ppc_fp_type} in 377soft|e500v1|e500v2) 378 if test $glibc_version_major -gt 2 \ 379 || ( test $glibc_version_major -eq 2 \ 380 && test $glibc_version_minor -ge 19 ); then 381 ppc_fp_compat="t-softfp-compat" 382 fi 383 ;; 384esac 385;; 386esac 387 388case ${host} in 389# At present, we cannot turn -mfloat128 on via #pragma GCC target, so just 390# check if we have VSX (ISA 2.06) support to build the software libraries, and 391# whether the assembler can handle xsaddqp for hardware support. Also check if 392# a new glibc is being used so that __builtin_cpu_supports can be used. 393powerpc*-*-linux*) 394 saved_CFLAGS="$CFLAGS" 395 CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128" 396 AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries], 397 [libgcc_cv_powerpc_float128], 398 [AC_COMPILE_IFELSE( 399 [AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])], 400 [libgcc_cv_powerpc_float128=yes], 401 [libgcc_cv_powerpc_float128=no])]) 402 403 CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware" 404 AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries], 405 [libgcc_cv_powerpc_float128_hw], 406 [AC_COMPILE_IFELSE( 407 [AC_LANG_SOURCE([#include <sys/auxv.h> 408 #ifndef AT_PLATFORM 409 #error "AT_PLATFORM is not defined" 410 #endif 411 #ifndef __BUILTIN_CPU_SUPPORTS__ 412 #error "__builtin_cpu_supports is not available" 413 #endif 414 vector unsigned char add (vector unsigned char a, vector unsigned char b) 415 { 416 vector unsigned char ret; 417 __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b)); 418 return ret; 419 } 420 void *add_resolver (void) { return (void *) add; } 421 __float128 add_ifunc (__float128, __float128) 422 __attribute__ ((__ifunc__ ("add_resolver")));])], 423 [libgcc_cv_powerpc_float128_hw=yes], 424 [libgcc_cv_powerpc_float128_hw=no])]) 425 CFLAGS="$saved_CFLAGS" 426esac 427 428# Collect host-machine-specific information. 429. ${srcdir}/config.host 430 431# Used for constructing correct paths for offload compilers. 432accel_dir_suffix= 433real_host_noncanonical=${host_noncanonical} 434if test x"$enable_as_accelerator_for" != x; then 435 accel_dir_suffix=/accel/${target_noncanonical} 436 real_host_noncanonical=${enable_as_accelerator_for} 437fi 438AC_SUBST(accel_dir_suffix) 439AC_SUBST(real_host_noncanonical) 440 441if test x"$enable_offload_targets" != x; then 442 extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o" 443fi 444 445# Check if Solaris/x86 linker supports ZERO terminator unwind entries. 446# This is after config.host so we can augment tmake_file. 447# Link with -nostartfiles -nodefaultlibs since neither are present while 448# building libgcc. 449case ${host} in 450i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) 451 cat > conftest.s <<EOF 452 .section .eh_frame,"a",@unwind 453 .zero 4 454 .section .jcr,"aw",@progbits 455 .zero 8 456EOF 457 if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then 458 tmake_file="${tmake_file} i386/t-crtstuff" 459 fi 460 ;; 461esac 462 463# Check if Solaris linker support v2 linker mapfile syntax. 464# Link with -nostartfiles -nodefaultlibs since neither are present while 465# building libgcc. 466case ${host} in 467*-*-solaris2*) 468 solaris_ld_v2_maps=no 469 echo 'int main(void) {return 0;}' > conftest.c 470 echo '$mapfile_version 2' > conftest.map 471 if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then 472 solaris_ld_v2_maps=yes 473 fi 474 ;; 475esac 476AC_SUBST(solaris_ld_v2_maps) 477 478# Check if xtensa target is configured for windowed ABI and thus needs to use 479# custom unwind code. 480# This is after config.host so we can augment tmake_file. 481case ${host} in 482xtensa*-*) 483 cat > conftest.c <<EOF 484 #ifdef __XTENSA_CALL0_ABI__ 485 #error 486 #endif 487EOF 488 if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then 489 tmake_file="${tmake_file} xtensa/t-windowed" 490 fi 491 ;; 492esac 493 494# Check for visibility support. This is after config.host so that 495# we can check for asm_hidden_op. 496AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], 497 libgcc_cv_hidden_visibility_attribute, [ 498 echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c 499 libgcc_cv_hidden_visibility_attribute=no 500 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then 501 if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then 502 libgcc_cv_hidden_visibility_attribute=yes 503 fi 504 fi 505 rm -f conftest.* 506 ]) 507 508if test $libgcc_cv_hidden_visibility_attribute = yes; then 509 vis_hide='-fvisibility=hidden -DHIDE_EXPORTS' 510 AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.]) 511else 512 vis_hide= 513fi 514AC_SUBST(vis_hide) 515 516# Check for .cfi_sections .debug_frame support. 517AC_CACHE_CHECK([for .cfi_sections .debug_frame], 518 libgcc_cv_cfi_sections_directive, [ 519 echo 'int foo (int, char *);' > conftest.c 520 echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c 521 libgcc_cv_cfi_sections_directive=no 522 if AC_TRY_COMMAND(${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then 523 if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then 524 libgcc_cv_cfi_sections_directive=yes 525 fi 526 fi 527 rm -f conftest.* 528 ]) 529if test $libgcc_cv_cfi_sections_directive = yes; then 530 AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.]) 531fi 532 533# See if we have thread-local storage. We can only test assembler 534# since link-time and run-time tests require the newly built 535# gcc, which can't be used to build executable due to that libgcc 536# is yet to be built here. 537GCC_CHECK_CC_TLS 538set_have_cc_tls= 539if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then 540 set_have_cc_tls="-DHAVE_CC_TLS" 541fi 542AC_SUBST(set_have_cc_tls) 543 544# See if we have emulated thread-local storage. 545GCC_CHECK_EMUTLS 546set_use_emutls= 547if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then 548 set_use_emutls="-DUSE_EMUTLS" 549fi 550AC_SUBST(set_use_emutls) 551 552dnl Check if as supports AVX instructions. 553AC_DEFUN([LIBGCC_CHECK_AS_AVX], [ 554case "${target}" in 555i[[34567]]86-*-* | x86_64-*-*) 556 AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [ 557 AC_TRY_COMPILE([], [asm("vzeroupper");], 558 [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no]) 559 ]) 560 if test x$libgcc_cv_as_avx = xyes; then 561 AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.]) 562 fi 563 ;; 564esac]) 565LIBGCC_CHECK_AS_AVX 566 567dnl Check if as supports RTM instructions. 568AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [ 569AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, 570 [[void ip (void) __attribute__ ((constructor (1)));]])], 571 [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])]) 572if test $libgcc_cv_init_priority = yes; then 573 AC_DEFINE(HAVE_INIT_PRIORITY, 1, 574 [Define if the compiler supports init priority.]) 575fi 576 577# Conditionalize the sfp-machine.h header for this target machine. 578if test -z "${sfp_machine_header}"; then 579 sfp_machine_header=$cpu_type/sfp-machine.h 580 if test -f ${srcdir}/config/${sfp_machine_header}; then 581 : 582 else 583 sfp_machine_header=no-sfp-machine.h 584 fi 585fi 586AC_SUBST(sfp_machine_header) 587 588# Conditionalize the makefile for this target machine. 589tmake_file_= 590for f in ${tmake_file} 591do 592 if test -f ${srcdir}/config/$f 593 then 594 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 595 fi 596done 597tmake_file="${tmake_file_}" 598AC_SUBST(tmake_file) 599 600# Likewise export definitions for libgcc_tm.h 601tm_file_= 602for f in ${tm_file} 603do 604 tm_file_="${tm_file_} \$(srcdir)/config/$f" 605done 606tm_file="${tm_file_}" 607AC_SUBST(tm_file) 608AC_SUBST(tm_defines) 609 610# Map from thread model to thread header. 611GCC_AC_THREAD_HEADER([$target_thread_file]) 612 613# Determine what GCC version number to use in filesystem paths. 614GCC_BASE_VER 615 616# Substitute configuration variables 617AC_SUBST(cpu_type) 618AC_SUBST(extra_parts) 619AC_SUBST(asm_hidden_op) 620AC_SUBST(enable_execute_stack) 621AC_SUBST(unwind_header) 622AC_SUBST(md_unwind_header) 623AC_SUBST(sfp_machine_header) 624AC_SUBST(thread_header) 625 626# We need multilib support. 627AC_CONFIG_FILES([Makefile]) 628AC_CONFIG_COMMANDS([default], 629 [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h 630if test -n "$CONFIG_FILES"; then 631 # FIXME: We shouldn't need to set ac_file 632 ac_file=Makefile 633 . ${libgcc_topdir}/config-ml.in 634fi]], 635[[srcdir=${srcdir} 636host=${host} 637with_target_subdir=${with_target_subdir} 638with_multisubdir=${with_multisubdir} 639ac_configure_args="--enable-multilib ${ac_configure_args}" 640CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} 641libgcc_topdir=${libgcc_topdir} 642CC="${CC}" 643]]) 644AC_OUTPUT 645