github.com/guyezi/gofrontend@v0.0.0-20200228202240-7a62a49e62c0/libgo/configure.ac (about) 1 # configure.ac -- Go library configure script. 2 3 # Copyright 2009 The Go Authors. All rights reserved. 4 # Use of this source code is governed by a BSD-style 5 # license that can be found in the LICENSE file. 6 7 # Process this file with autoreconf to produce configure. 8 9 AC_INIT(package-unused, version-unused,, libgo) 10 AC_CONFIG_SRCDIR(Makefile.am) 11 AC_CONFIG_HEADER(config.h) 12 13 libtool_VERSION=16:0:0 14 AC_SUBST(libtool_VERSION) 15 16 AM_ENABLE_MULTILIB(, ..) 17 18 AC_CANONICAL_SYSTEM 19 target_alias=${target_alias-$host_alias} 20 21 AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist subdir-objects -Wall -Wno-portability -Wno-override]) 22 AH_TEMPLATE(PACKAGE, [Name of package]) 23 AH_TEMPLATE(VERSION, [Version number of package]) 24 25 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS]) 26 m4_define([_AC_ARG_VAR_PRECIOUS],[]) 27 AC_PROG_CC 28 AC_PROG_GO 29 AM_PROG_AS 30 m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 31 32 AC_SUBST(CFLAGS) 33 34 case ${host} in 35 *-*-aix*) 36 # static hash tables crashes on AIX when libgo is built with O2 37 CFLAGS="$CFLAGS -fno-section-anchors" 38 GOCFLAGS="$GOCFLAGS -fno-section-anchors" 39 ;; 40 esac 41 42 AM_MAINTAINER_MODE 43 44 AC_PROG_LD 45 AC_PROG_RANLIB 46 AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy) 47 48 AC_LIBTOOL_DLOPEN 49 AM_PROG_LIBTOOL 50 AC_SUBST(enable_shared) 51 AC_SUBST(enable_static) 52 53 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc} 54 AC_SUBST(CC_FOR_BUILD) 55 56 AC_PROG_AWK 57 58 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' 59 AC_SUBST(WARN_FLAGS) 60 61 AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], 62 [turns on -Werror @<:@default=yes@:>@])]) 63 if test "x$enable_werror" != "xno"; then 64 WERROR="-Werror" 65 fi 66 AC_SUBST(WERROR) 67 68 glibgo_toolexecdir=no 69 glibgo_toolexeclibdir=no 70 71 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 72 AC_ARG_ENABLE([version-specific-runtime-libs], 73 AC_HELP_STRING([--enable-version-specific-runtime-libs], 74 [Specify that runtime libraries should be installed in a compiler-specific directory]), 75 [case "$enableval" in 76 yes) version_specific_libs=yes ;; 77 no) version_specific_libs=no ;; 78 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 79 esac], 80 [version_specific_libs=no]) 81 AC_MSG_RESULT($version_specific_libs) 82 83 GCC_WITH_TOOLEXECLIBDIR 84 85 # Version-specific runtime libs processing. 86 if test $version_specific_libs = yes; then 87 glibgo_toolexecdir='${libdir}/gcc/${host_alias}' 88 glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' 89 fi 90 91 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir 92 # Install a library built with a cross compiler in tooldir, not libdir. 93 if test -n "$with_cross_host" && 94 test x"$with_cross_host" != x"no"; then 95 nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}' 96 case ${with_toolexeclibdir} in 97 no) 98 nover_glibgo_toolexeclibdir='${toolexecdir}/lib' 99 ;; 100 *) 101 nover_glibgo_toolexeclibdir=${with_toolexeclibdir} 102 ;; 103 esac 104 else 105 nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}' 106 nover_glibgo_toolexeclibdir='${libdir}' 107 fi 108 multi_os_directory=`$GOC -print-multi-os-directory` 109 case $multi_os_directory in 110 .) ;; # Avoid trailing /. 111 *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;; 112 esac 113 114 if test x"$glibgo_toolexecdir" = x"no"; then 115 glibgo_toolexecdir="${nover_glibgo_toolexecdir}" 116 glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}" 117 fi 118 119 AC_SUBST(glibgo_toolexecdir) 120 AC_SUBST(glibgo_toolexeclibdir) 121 AC_SUBST(nover_glibgo_toolexeclibdir) 122 123 # See if the user wants to configure without libffi. Some 124 # architectures don't support it. FIXME: We should set a default 125 # based on the host. 126 AC_ARG_WITH(libffi, 127 AS_HELP_STRING([--without-libffi], 128 [don't use libffi]), 129 [:], 130 [with_libffi=${with_libffi_default-yes}]) 131 132 LIBFFI= 133 LIBFFIINCS= 134 if test "$with_libffi" != no; then 135 AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.]) 136 LIBFFI=../libffi/libffi_convenience.la 137 LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include' 138 fi 139 AC_SUBST(LIBFFI) 140 AC_SUBST(LIBFFIINCS) 141 AM_CONDITIONAL(USE_LIBFFI, test "$with_libffi" != "no") 142 143 # See if the user wants to configure without libatomic. This is useful if we are 144 # on an architecture for which libgo does not need an atomic support library and 145 # libatomic does not support our C compiler. 146 AC_ARG_WITH(libatomic, 147 AS_HELP_STRING([--without-libatomic], 148 [don't use libatomic]), 149 [:], 150 [with_libatomic=${with_libatomic_default-yes}]) 151 152 LIBATOMIC= 153 if test "$with_libatomic" != no; then 154 LIBATOMIC=../libatomic/libatomic_convenience.la 155 fi 156 AC_SUBST(LIBATOMIC) 157 158 # Used to tell GNU make to include a file without telling automake to 159 # include it. 160 go_include="-include" 161 AC_SUBST(go_include) 162 163 # All known GOOS values. This is the union of all operating systems 164 # supported by the gofrontend and all operating systems supported by 165 # the gc toolchain. 166 ALLGOOS="aix android darwin dragonfly freebsd hurd illumos irix js linux netbsd openbsd plan9 rtems solaris windows" 167 168 is_darwin=no 169 is_freebsd=no 170 is_irix=no 171 is_linux=no 172 is_netbsd=no 173 is_openbsd=no 174 is_dragonfly=no 175 is_rtems=no 176 is_solaris=no 177 is_aix=no 178 is_hurd=no 179 GOOS=unknown 180 case ${host} in 181 *-*-darwin*) is_darwin=yes; GOOS=darwin ;; 182 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;; 183 *-*-irix6*) is_irix=yes; GOOS=irix ;; 184 *-*-linux*) is_linux=yes; GOOS=linux ;; 185 *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;; 186 *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;; 187 *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;; 188 *-*-rtems*) is_rtems=yes; GOOS=rtems ;; 189 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;; 190 *-*-aix*) is_aix=yes; GOOS=aix ;; 191 *-*-gnu*) is_hurd=yes; GOOS=hurd ;; 192 esac 193 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes) 194 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes) 195 AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes) 196 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes) 197 AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes) 198 AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes) 199 AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes) 200 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes) 201 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes) 202 AM_CONDITIONAL(LIBGO_IS_AIX, test $is_aix = yes) 203 AM_CONDITIONAL(LIBGO_IS_HURD, test $is_hurd = yes) 204 AM_CONDITIONAL(LIBGO_IS_BSD, test $is_darwin = yes -o $is_dragonfly = yes -o $is_freebsd = yes -o $is_netbsd = yes -o $is_openbsd = yes) 205 AC_SUBST(GOOS) 206 AC_SUBST(ALLGOOS) 207 208 dnl Test whether we need to use DejaGNU or whether we can use the 209 dnl simpler gotest approach. We can only use gotest for a native 210 dnl build. 211 USE_DEJAGNU=no 212 case ${host} in 213 *-*-rtems*) USE_DEJAGNU=yes ;; 214 ${build}) ;; 215 *) USE_DEJAGNU=yes ;; 216 esac 217 AC_SUBST(USE_DEJAGNU) 218 219 # All known GOARCH values. This is the union of all architectures 220 # supported by the gofrontend and all architectures supported by the 221 # gc toolchain. 222 # To add a new architecture: 223 # - add it to this list 224 # - if appropriate, add an entry to ALLGOARCHFAMILY below 225 # - add an entry to the case on ${host} below to set GOARCH 226 # - update goarchList in libgo/go/go/build/syslist.go 227 # - update goarch.sh to report the values for this architecture 228 # - update go-set-goarch in gcc/testsuite/go.test/go-test.exp 229 # - update ptrSizeMap and intSizeMap in libgo/go/cmd/cgo/main.go 230 # - update arch lists in libgo/match.sh 231 # - update arch lists in libgo/testsuite/gotest 232 # - update +build lines in several places 233 # - libgo/go/runtime/lfstack_NNbit.go 234 # - libgo/go/runtime/hashNN.go 235 # - libgo/go/runtime/unalignedN.go 236 # - libgo/go/syscall/endian_XX.go 237 # - possibly others 238 # - possibly update files in libgo/go/internal/syscall/unix 239 ALLGOARCH="386 alpha amd64 amd64p32 arm armbe arm64 arm64be ia64 m68k mips mipsle mips64 mips64le mips64p32 mips64p32le nios2 ppc ppc64 ppc64le riscv riscv64 s390 s390x sh shbe sparc sparc64 wasm" 240 241 # All known GOARCH family values. 242 ALLGOARCHFAMILY="I386 ALPHA AMD64 ARM ARM64 IA64 M68K MIPS MIPS64 NIOS2 PPC PPC64 RISCV RISCV64 S390 S390X SH SPARC SPARC64 WASM" 243 244 GOARCH=unknown 245 case ${host} in 246 alpha*-*-*) 247 GOARCH=alpha 248 ;; 249 aarch64-*-*) 250 GOARCH=arm64 251 ;; 252 aarch64_be-*-*) 253 GOARCH=arm64be 254 ;; 255 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) 256 GOARCH=arm 257 case ${host} in 258 arm*b*-*-*) 259 GOARCH=armbe 260 ;; 261 esac 262 ;; 263 changequote(,)dnl 264 i[34567]86-*-* | x86_64-*-*) 265 changequote([,])dnl 266 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 267 #ifdef __x86_64__ 268 #error 64-bit 269 #endif 270 ])], 271 [GOARCH=386], 272 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 273 #ifdef __ILP32__ 274 #error x32 275 #endif 276 ])], 277 [GOARCH=amd64], 278 [GOARCH=amd64p32])) 279 ;; 280 ia64-*-*) 281 GOARCH=ia64 282 ;; 283 m68k*-*-*) 284 GOARCH=m68k 285 ;; 286 mips*-*-*) 287 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 288 #if _MIPS_SIM != _ABIO32 289 #error not o32 290 #endif 291 ])], 292 [mips_abi="o32"], 293 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 294 #if _MIPS_SIM != _ABIN32 295 #error not n32 296 #endif 297 ])], 298 [mips_abi="n32"], 299 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 300 #if _MIPS_SIM != _ABI64 301 #error not n64 302 #endif 303 ])], 304 [mips_abi="n64"], 305 [AC_MSG_ERROR([unknown MIPS ABI]) 306 [mips_abi="n32"]])])]) 307 case "$mips_abi" in 308 "o32") GOARCH=mips ;; 309 "n32") GOARCH=mips64p32 ;; 310 "n64") GOARCH=mips64 ;; 311 esac 312 case "${host}" in 313 mips*el-*-*) 314 GOARCH="${GOARCH}le" 315 ;; 316 esac 317 ;; 318 nios2-*-*) 319 GOARCH=nios2 320 ;; 321 rs6000*-*-* | powerpc*-*-*) 322 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 323 #ifdef _ARCH_PPC64 324 #error 64-bit 325 #endif 326 ])], 327 [GOARCH=ppc], 328 [ 329 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 330 #if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) 331 #error 64be 332 #endif 333 ])], 334 [GOARCH=ppc64le], 335 [GOARCH=ppc64])]) 336 ;; 337 riscv64-*-*) 338 GOARCH=riscv64 339 ;; 340 s390*-*-*) 341 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 342 #if defined(__s390x__) 343 #error 64-bit 344 #endif 345 ])], 346 [GOARCH=s390], 347 [GOARCH=s390x]) 348 ;; 349 sh3eb*-*-* | sh4eb*-*-*) 350 GOARCH=shbe 351 ;; 352 sh3*-*-* | sh4*-*-*) 353 GOARCH=sh 354 ;; 355 sparc*-*-*) 356 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 357 #if defined(__sparcv9) || defined(__arch64__) 358 #error 64-bit 359 #endif 360 ])], 361 [GOARCH=sparc], 362 [GOARCH=sparc64]) 363 ;; 364 esac 365 AC_SUBST(GOARCH) 366 AC_SUBST(ALLGOARCH) 367 AC_SUBST(ALLGOARCHFAMILY) 368 369 AM_CONDITIONAL(LIBGO_IS_X86, test "$GOARCH" = "386" -o "$GOARCH" = "amd64" -o "$GOARCH" = "amd64p32") 370 371 FUNCTION_DESCRIPTORS=false 372 case ${host} in 373 rs6000*-*-* | powerpc*-*-*) 374 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 375 #if _CALL_ELF == 1 376 #error descriptors 377 #endif 378 ])], 379 [FUNCTION_DESCRIPTORS=false], 380 [FUNCTION_DESCRIPTORS=true]) 381 ;; 382 esac 383 AC_SUBST(FUNCTION_DESCRIPTORS) 384 385 dnl Some files are only present when needed for specific architectures. 386 GO_LIBCALL_OS_FILE= 387 GO_LIBCALL_OS_ARCH_FILE= 388 GO_SYSCALL_OS_FILE= 389 GO_SYSCALL_OS_ARCH_FILE= 390 if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then 391 GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.go" 392 fi 393 if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then 394 GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go" 395 fi 396 if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then 397 GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go" 398 fi 399 if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then 400 GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go" 401 fi 402 AC_SUBST(GO_LIBCALL_OS_FILE) 403 AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) 404 AC_SUBST(GO_SYSCALL_OS_FILE) 405 AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) 406 407 dnl Special flags used to generate sysinfo.go. 408 OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" 409 case "$target" in 410 mips-sgi-irix6.5*) 411 # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct 412 # msghdr in <sys/socket.h>. 413 OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" 414 ;; 415 *-*-solaris2.*) 416 # Solaris 10+ needs this so struct msghdr gets the msg_control 417 # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as 418 # above doesn't work with C99. 419 OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" 420 ;; 421 esac 422 AC_SUBST(OSCFLAGS) 423 424 dnl Check if assembler supports disabling hardware capability support. 425 GCC_CHECK_ASSEMBLER_HWCAP 426 427 dnl Use -fsplit-stack when compiling C code if available. 428 AC_CACHE_CHECK([whether -fsplit-stack is supported], 429 [libgo_cv_c_split_stack_supported], 430 [CFLAGS_hold=$CFLAGS 431 CFLAGS="$CFLAGS -fsplit-stack" 432 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 433 [libgo_cv_c_split_stack_supported=yes], 434 [libgo_cv_c_split_stack_supported=no]) 435 CFLAGS=$CFLAGS_hold]) 436 437 dnl Make sure the linker permits -fsplit-stack. Old versions of gold will 438 dnl reject split-stack code calling non-split-stack code on targets 439 dnl they don't support. 440 AC_CACHE_CHECK([whether linker supports split/non-split linked together], 441 [libgo_cv_c_linker_split_non_split], 442 [cat > conftest1.c << EOF 443 extern void f(); 444 int main() { f(); return 0; } 445 EOF 446 cat > conftest2.c << EOF 447 void f() {} 448 EOF 449 $CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c >/dev/null 2>&1 450 $CC -c $CFLAGS $CPPFLAGS conftest2.c > /dev/null 2>&1 451 if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext > /dev/null 2>&1; then 452 libgo_cv_c_linker_split_non_split=yes 453 else 454 libgo_cv_c_linker_split_non_split=no 455 fi 456 rm -f conftest1.* conftest2.* conftest]) 457 458 if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then 459 SPLIT_STACK=-fsplit-stack 460 AC_DEFINE(USING_SPLIT_STACK, 1, 461 [Define if the compiler supports -fsplit-stack]) 462 else 463 SPLIT_STACK= 464 fi 465 AC_SUBST(SPLIT_STACK) 466 AM_CONDITIONAL(USING_SPLIT_STACK, 467 test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes) 468 469 dnl If the compiler supports split-stack but the linker does not, then 470 dnl we need to explicitly disable split-stack for Go. 471 if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = no; then 472 GO_SPLIT_STACK=-fno-split-stack 473 else 474 GO_SPLIT_STACK= 475 fi 476 AC_SUBST(GO_SPLIT_STACK) 477 478 dnl Check whether the linker does stack munging when calling from 479 dnl split-stack into non-split-stack code. We check this by looking 480 dnl at the --help output. FIXME: This is only half right: it's 481 dnl possible for the linker to support this for some targets but not 482 dnl others. 483 dnl This is slightly different from the above check, which is whether 484 dnl the linker permits the call at all. 485 AC_CACHE_CHECK([whether linker supports split stack], 486 [libgo_cv_c_linker_supports_split_stack], 487 [libgo_cv_c_linker_supports_split_stack=no 488 if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then 489 libgo_cv_c_linker_supports_split_stack=yes 490 fi]) 491 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then 492 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1, 493 [Define if the linker support split stack adjustments]) 494 fi 495 496 AC_CACHE_CHECK([whether compiler is llgo], 497 [libgo_cv_c_goc_is_llgo], 498 [libgo_cv_c_goc_is_llgo=no 499 if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then 500 libgo_cv_c_goc_is_llgo=yes 501 fi]) 502 AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes) 503 504 dnl Test for the -lm library. 505 MATH_LIBS= 506 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm) 507 AC_SUBST(MATH_LIBS) 508 509 dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac. 510 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets, 511 [libgo_cv_lib_sockets= 512 libgo_check_both=no 513 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes) 514 if test "$libgo_check_socket" = "yes"; then 515 unset ac_cv_func_connect 516 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket", 517 libgo_check_both=yes) 518 fi 519 if test "$libgo_check_both" = "yes"; then 520 libgo_old_libs=$LIBS 521 LIBS="$LIBS -lsocket -lnsl" 522 unset ac_cv_func_accept 523 AC_CHECK_FUNC(accept, 524 [libgo_check_nsl=no 525 libgo_cv_lib_sockets="-lsocket -lnsl"]) 526 unset ac_cv_func_accept 527 LIBS=$libgo_old_libs 528 fi 529 unset ac_cv_func_gethostbyname 530 libgo_old_libs="$LIBS" 531 AC_CHECK_FUNC(gethostbyname, , 532 [AC_CHECK_LIB(nsl, main, 533 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])]) 534 unset ac_cv_func_gethostbyname 535 AC_CHECK_FUNC(sendfile, , 536 [AC_CHECK_LIB(sendfile, main, 537 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lsendfile"])]) 538 LIBS=$libgo_old_libs 539 ]) 540 NET_LIBS="$libgo_cv_lib_sockets" 541 AC_SUBST(NET_LIBS) 542 543 dnl Test whether the compiler supports the -pthread option. 544 AC_CACHE_CHECK([whether -pthread is supported], 545 [libgo_cv_lib_pthread], 546 [CFLAGS_hold=$CFLAGS 547 CFLAGS="$CFLAGS -pthread -L../libatomic/.libs" 548 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 549 [libgo_cv_lib_pthread=yes], 550 [libgo_cv_lib_pthread=no]) 551 CFLAGS=$CFLAGS_hold]) 552 PTHREAD_CFLAGS= 553 if test "$libgo_cv_lib_pthread" = yes; then 554 # RISC-V apparently adds -latomic when using -pthread. 555 PTHREAD_CFLAGS="-pthread -L../libatomic/.libs" 556 fi 557 AC_SUBST(PTHREAD_CFLAGS) 558 559 dnl Test for the -lpthread library. 560 PTHREAD_LIBS= 561 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) 562 AC_SUBST(PTHREAD_LIBS) 563 564 dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime. 565 AC_SEARCH_LIBS([sched_yield], [rt]) 566 AC_SEARCH_LIBS([nanosleep], [rt]) 567 AC_SEARCH_LIBS([clock_gettime], [rt]) 568 569 AC_C_BIGENDIAN 570 571 GCC_CHECK_UNWIND_GETIPINFO 572 573 AC_CHECK_HEADERS(port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h) 574 575 AC_CHECK_HEADERS([netinet/icmp6.h], [], [], 576 [#include <netinet/in.h> 577 ]) 578 579 AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [], 580 [#ifdef HAVE_SYS_SOCKET_H 581 #include <sys/socket.h> 582 #endif 583 ]) 584 585 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes) 586 587 AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr memmem) 588 AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes) 589 AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes) 590 591 AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice syscall tee unlinkat unshare utimensat) 592 AC_TYPE_OFF_T 593 AC_CHECK_TYPES([loff_t]) 594 595 LIBS_hold="$LIBS" 596 LIBS="$LIBS -lm" 597 AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl) 598 LIBS="$LIBS_hold" 599 600 CFLAGS_hold="$CFLAGS" 601 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 602 LIBS_hold="$LIBS" 603 LIBS="$LIBS $PTHREAD_LIBS" 604 AC_CHECK_FUNCS(sem_timedwait) 605 CFLAGS="$CFLAGS_hold" 606 LIBS="$LIBS_hold" 607 608 LIBS_hold="$LIBS" 609 LIBS="$LIBS $MATH_LIBS" 610 AC_CHECK_FUNCS(matherr) 611 LIBS="$LIBS_hold" 612 613 dnl For x86 we want to use the -minline-all-stringops option to avoid 614 dnl forcing a stack split when calling memcpy and friends. 615 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops], 616 [libgo_cv_c_stringops], 617 [CFLAGS_hold=$CFLAGS 618 CFLAGS="$CFLAGS -minline-all-stringops" 619 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 620 [libgo_cv_c_stringops=yes], 621 [libgo_cv_c_stringops=no]) 622 CFLAGS=$CFLAGS_hold]) 623 STRINGOPS_FLAG= 624 if test "$libgo_cv_c_stringops" = yes; then 625 STRINGOPS_FLAG=-minline-all-stringops 626 fi 627 AC_SUBST(STRINGOPS_FLAG) 628 629 dnl For x86 we want to compile the math library with -mfancy-math-387 630 dnl so that we can use the builtin instructions directly. 631 AC_CACHE_CHECK([whether compiler supports -mfancy-math-387], 632 [libgo_cv_c_fancymath], 633 [CFLAGS_hold=$CFLAGS 634 CFLAGS="$CFLAGS -mfancy-math-387" 635 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 636 [libgo_cv_c_fancymath=yes], 637 [libgo_cv_c_fancymath=no]) 638 CFLAGS=$CFLAGS_hold]) 639 MATH_FLAG= 640 if test "$libgo_cv_c_fancymath" = yes; then 641 MATH_FLAG="-mfancy-math-387" 642 fi 643 MATH_FLAG="${MATH_FLAG} -ffp-contract=off -fno-math-errno -fno-trapping-math" 644 AC_SUBST(MATH_FLAG) 645 646 CFLAGS_hold=$CFLAGS 647 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE" 648 AC_CHECK_TYPES([off64_t]) 649 CFLAGS=$CFLAGS_hold 650 651 dnl Work out the size of the epoll_events struct on GNU/Linux. 652 AC_CACHE_CHECK([epoll_event size], 653 [libgo_cv_c_epoll_event_size], 654 [AC_COMPUTE_INT(libgo_cv_c_epoll_event_size, 655 [sizeof (struct epoll_event)], 656 [#include <sys/epoll.h>], 657 [libgo_cv_c_epoll_event_size=0])]) 658 SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size} 659 AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT) 660 661 dnl Work out the offset of the fd field in the epoll_events struct on 662 dnl GNU/Linux. 663 AC_CACHE_CHECK([epoll_event data.fd offset], 664 [libgo_cv_c_epoll_event_fd_offset], 665 [AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset, 666 [offsetof (struct epoll_event, data.fd)], 667 [#include <stddef.h> 668 #include <sys/epoll.h>], 669 [libgo_cv_c_epoll_event_fd_offset=0])]) 670 STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset} 671 AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET) 672 673 dnl Check if <sys/stat.h> uses timespec_t for st_?tim members. Introduced 674 dnl in Solaris 11.4 for XPG7 compatibility. 675 AC_EGREP_HEADER([timespec_t.*st_atim], [sys/stat.h], 676 [have_stat_timespec=yes], [have_stat_timespec=no]) 677 AM_CONDITIONAL(HAVE_STAT_TIMESPEC, test $have_stat_timespec = yes) 678 679 dnl See if struct exception is defined in <math.h>. 680 AC_CHECK_TYPE([struct exception], 681 [libgo_has_struct_exception=yes], 682 [libgo_has_struct_exception=no], 683 [#include <math.h>]) 684 if test "$libgo_has_struct_exception" = "yes"; then 685 AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1, 686 [Define to 1 if <math.h> defines struct exception]) 687 fi 688 689 dnl See whether setcontext changes the value of TLS variables. 690 AC_CACHE_CHECK([whether setcontext clobbers TLS variables], 691 [libgo_cv_lib_setcontext_clobbers_tls], 692 [CFLAGS_hold="$CFLAGS" 693 CFLAGS="$PTHREAD_CFLAGS" 694 LIBS_hold="$LIBS" 695 LIBS="$LIBS $PTHREAD_LIBS" 696 AC_CHECK_SIZEOF([void *]) 697 AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8]) 698 AC_RUN_IFELSE( 699 [AC_LANG_SOURCE([ 700 #include <pthread.h> 701 #include <stdlib.h> 702 #include <ucontext.h> 703 #include <unistd.h> 704 705 __thread int tls; 706 707 static char stack[[10 * 1024 * 1024]]; 708 static ucontext_t c; 709 710 /* Called via makecontext/setcontext. */ 711 712 static void 713 cfn (void) 714 { 715 exit (tls); 716 } 717 718 /* Called via pthread_create. */ 719 720 static void * 721 tfn (void *dummy) 722 { 723 /* The thread should still see this value after calling 724 setcontext. */ 725 tls = 0; 726 727 setcontext (&c); 728 729 /* The call to setcontext should not return. */ 730 abort (); 731 } 732 733 int 734 main () 735 { 736 pthread_t tid; 737 738 /* The thread should not see this value. */ 739 tls = 1; 740 741 if (getcontext (&c) < 0) 742 abort (); 743 744 c.uc_stack.ss_sp = stack; 745 #ifdef MAKECONTEXT_STACK_TOP 746 c.uc_stack.ss_sp += sizeof stack; 747 #endif 748 c.uc_stack.ss_flags = 0; 749 c.uc_stack.ss_size = sizeof stack; 750 c.uc_link = NULL; 751 makecontext (&c, cfn, 0); 752 753 if (pthread_create (&tid, NULL, tfn, NULL) != 0) 754 abort (); 755 756 if (pthread_join (tid, NULL) != 0) 757 abort (); 758 759 /* The thread should have called exit. */ 760 abort (); 761 } 762 ])], 763 [libgo_cv_lib_setcontext_clobbers_tls=no], 764 [libgo_cv_lib_setcontext_clobbers_tls=yes], 765 [case "$target:$ptr_type_size" in 766 i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64) 767 libgo_cv_lib_setcontext_clobbers_tls=yes ;; 768 *) 769 libgo_cv_lib_setcontext_clobbers_tls=no ;; 770 esac 771 ]) 772 CFLAGS="$CFLAGS_hold" 773 LIBS="$LIBS_hold" 774 ]) 775 if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then 776 AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1, 777 [Define if setcontext clobbers TLS variables]) 778 fi 779 780 AC_CACHE_CHECK([whether .eh_frame section should be read-only], 781 libgo_cv_ro_eh_frame, [ 782 libgo_cv_ro_eh_frame=no 783 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c 784 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then 785 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then 786 libgo_cv_ro_eh_frame=yes 787 elif grep '.section.*eh_frame.*#alloc' conftest.c \ 788 | grep -v '#write' > /dev/null; then 789 libgo_cv_ro_eh_frame=yes 790 fi 791 fi 792 rm -f conftest.* 793 ]) 794 if test "x$libgo_cv_ro_eh_frame" = xyes; then 795 AC_DEFINE(EH_FRAME_FLAGS, "a", 796 [Define to the flags needed for the .section .eh_frame directive.]) 797 else 798 AC_DEFINE(EH_FRAME_FLAGS, "aw", 799 [Define to the flags needed for the .section .eh_frame directive.]) 800 fi 801 802 AC_CACHE_CHECK([if compiler supports -Qunused-arguments], 803 [libgo_cv_c_unused_arguments], 804 [CFLAGS_hold=$CFLAGS 805 CFLAGS="$CFLAGS -Qunused-arguments" 806 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 807 [libgo_cv_c_unused_arguments=yes], 808 [libgo_cv_c_unused_arguments=no]) 809 CFLAGS=$CFLAGS_hold]) 810 811 AC_CACHE_CHECK([if assembler supports GNU comdat group syntax], 812 libgo_cv_as_comdat_gnu, [ 813 echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s 814 CFLAGS_hold=$CFLAGS 815 if test "$libgo_cv_c_unused_arguments" = yes; then 816 CFLAGS="$CFLAGS -Qunused-arguments" 817 fi 818 if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then 819 libgo_cv_as_comdat_gnu=yes 820 else 821 libgo_cv_as_comdat_gnu=no 822 fi 823 CFLAGS=$CFLAGS_hold 824 ]) 825 if test "x$libgo_cv_as_comdat_gnu" = xyes; then 826 AC_DEFINE(HAVE_AS_COMDAT_GAS, 1, 827 [Define if your assembler supports GNU comdat group syntax.]) 828 fi 829 830 AC_CACHE_CHECK([assembler supports pc related relocs], 831 libgo_cv_as_x86_pcrel, [ 832 libgo_cv_as_x86_pcrel=yes 833 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s 834 CFLAGS_hold=$CFLAGS 835 if test "$libgo_cv_c_unused_arguments" = yes; then 836 CFLAGS="$CFLAGS -Qunused-arguments" 837 fi 838 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then 839 libgo_cv_as_x86_pcrel=no 840 fi 841 CFLAGS=$CFLAGS_hold 842 ]) 843 if test "x$libgo_cv_as_x86_pcrel" = xyes; then 844 AC_DEFINE(HAVE_AS_X86_PCREL, 1, 845 [Define if your assembler supports PC relative relocs.]) 846 fi 847 848 AC_CACHE_CHECK([assembler supports unwind section type], 849 libgo_cv_as_x86_64_unwind_section_type, [ 850 libgo_cv_as_x86_64_unwind_section_type=yes 851 echo '.section .eh_frame,"a",@unwind' > conftest.s 852 CFLAGS_hold=$CFLAGS 853 if test "$libgo_cv_c_unused_arguments" = yes; then 854 CFLAGS="$CFLAGS -Qunused-arguments" 855 fi 856 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then 857 libgo_cv_as_x86_64_unwind_section_type=no 858 fi 859 CFLAGS=$CFLAGS_hold 860 ]) 861 if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then 862 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, 863 [Define if your assembler supports unwind section type.]) 864 fi 865 866 AC_CACHE_CHECK([assembler supports AES instructions], 867 libgo_cv_as_x86_aes, [ 868 libgo_cv_as_x86_aes=yes 869 echo 'aesenc %xmm0, %xmm1' > conftest.s 870 CFLAGS_hold=$CFLAGS 871 if test "$libgo_cv_c_unused_arguments" = yes; then 872 CFLAGS="$CFLAGS -Qunused-arguments" 873 fi 874 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i error > /dev/null; then 875 libgo_cv_as_x86_aes=no 876 fi 877 CFLAGS=$CFLAGS_hold 878 ]) 879 if test "x$libgo_cv_as_x86_aes" = xyes; then 880 AC_DEFINE(HAVE_AS_X86_AES, 1, 881 [Define if your assembler supports AES instructions.]) 882 fi 883 884 AC_CACHE_SAVE 885 886 if test ${multilib} = yes; then 887 multilib_arg="--enable-multilib" 888 else 889 multilib_arg= 890 fi 891 892 AC_CONFIG_FILES(Makefile testsuite/Makefile testsuite/libgo-test-support.exp) 893 894 AC_CONFIG_COMMANDS([default], 895 [if test -n "$CONFIG_FILES"; then 896 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so 897 # that multilib installs will end up installed in the correct place. 898 # The testsuite needs it for multilib-aware ABI baseline files. 899 # To work around this not being passed down from config-ml.in -> 900 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 901 # append it here. Only modify Makefiles that have just been created. 902 # 903 # Also, get rid of this simulated-VPATH thing that automake does. 904 cat > vpsed << \_EOF 905 s!`test -f '$<' || echo '$(srcdir)/'`!! 906 _EOF 907 for i in $SUBDIRS; do 908 case $CONFIG_FILES in 909 *${i}/Makefile*) 910 #echo "Adding MULTISUBDIR to $i/Makefile" 911 sed -f vpsed $i/Makefile > tmp 912 grep '^MULTISUBDIR =' Makefile >> tmp 913 mv tmp $i/Makefile 914 ;; 915 esac 916 done 917 rm vpsed 918 fi 919 ], 920 [ 921 # Variables needed in config.status (file generation) which aren't already 922 # passed by autoconf. 923 SUBDIRS="$SUBDIRS" 924 ]) 925 926 AC_OUTPUT