github.com/alexanius/gollvm12@v0.0.0-20230419200121-b152358b84f3/gofrontend/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=22:0:0 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 ${host} in 35 *-*-aix*) 36 # Check default architecture for FAT library creation 37 if test -z "`$CC -x c -E /dev/null -g3 -o - | grep 64BIT`" ; then 38 AIX_EXTRA_ARCH='64' 39 else 40 AIX_EXTRA_ARCH='32' 41 fi 42 AC_SUBST(AIX_EXTRA_ARCH) 43 ;; 44 esac 45 46 AM_MAINTAINER_MODE 47 48 AC_PROG_LD 49 AC_PROG_RANLIB 50 AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy) 51 52 AC_LIBTOOL_DLOPEN 53 AM_PROG_LIBTOOL 54 AC_SUBST(enable_shared) 55 AC_SUBST(enable_static) 56 57 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc} 58 AC_SUBST(CC_FOR_BUILD) 59 60 AC_PROG_AWK 61 62 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' 63 AC_SUBST(WARN_FLAGS) 64 65 AC_ARG_ENABLE([werror], 66 [AS_HELP_STRING([--disable-werror], [disable building with -Werror])]) 67 AS_IF([test "x$enable_werror" != "xno" && test "x$GCC" = "xyes"], 68 [WERROR="-Werror"]) 69 AC_SUBST(WERROR) 70 71 glibgo_toolexecdir=no 72 glibgo_toolexeclibdir=no 73 74 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 75 AC_ARG_ENABLE([version-specific-runtime-libs], 76 AC_HELP_STRING([--enable-version-specific-runtime-libs], 77 [Specify that runtime libraries should be installed in a compiler-specific directory]), 78 [case "$enableval" in 79 yes) version_specific_libs=yes ;; 80 no) version_specific_libs=no ;; 81 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 82 esac], 83 [version_specific_libs=no]) 84 AC_MSG_RESULT($version_specific_libs) 85 86 GCC_WITH_TOOLEXECLIBDIR 87 88 # Version-specific runtime libs processing. 89 if test $version_specific_libs = yes; then 90 glibgo_toolexecdir='${libdir}/gcc/${host_alias}' 91 glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' 92 fi 93 94 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir 95 # Install a library built with a cross compiler in tooldir, not libdir. 96 if test -n "$with_cross_host" && 97 test x"$with_cross_host" != x"no"; then 98 nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}' 99 case ${with_toolexeclibdir} in 100 no) 101 nover_glibgo_toolexeclibdir='${toolexecdir}/lib' 102 ;; 103 *) 104 nover_glibgo_toolexeclibdir=${with_toolexeclibdir} 105 ;; 106 esac 107 else 108 nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}' 109 nover_glibgo_toolexeclibdir='${libdir}' 110 fi 111 multi_os_directory=`$GOC -print-multi-os-directory` 112 case $multi_os_directory in 113 .) ;; # Avoid trailing /. 114 *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;; 115 esac 116 117 if test x"$glibgo_toolexecdir" = x"no"; then 118 glibgo_toolexecdir="${nover_glibgo_toolexecdir}" 119 glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}" 120 fi 121 122 AC_SUBST(glibgo_toolexecdir) 123 AC_SUBST(glibgo_toolexeclibdir) 124 AC_SUBST(nover_glibgo_toolexeclibdir) 125 126 # See if the user wants to configure without libffi. Some 127 # architectures don't support it. FIXME: We should set a default 128 # based on the host. 129 AC_ARG_WITH(libffi, 130 AS_HELP_STRING([--without-libffi], 131 [don't use libffi]), 132 [:], 133 [with_libffi=${with_libffi_default-yes}]) 134 135 LIBFFI= 136 LIBFFIINCS= 137 if test "$with_libffi" != no; then 138 AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.]) 139 LIBFFI=../libffi/libffi_convenience.la 140 LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include' 141 fi 142 AC_SUBST(LIBFFI) 143 AC_SUBST(LIBFFIINCS) 144 AM_CONDITIONAL(USE_LIBFFI, test "$with_libffi" != "no") 145 146 # See if the user wants to configure without libatomic. This is useful if we are 147 # on an architecture for which libgo does not need an atomic support library and 148 # libatomic does not support our C compiler. 149 AC_ARG_WITH(libatomic, 150 AS_HELP_STRING([--without-libatomic], 151 [don't use libatomic]), 152 [:], 153 [with_libatomic=${with_libatomic_default-yes}]) 154 155 LIBATOMIC= 156 if test "$with_libatomic" != no; then 157 LIBATOMIC=../libatomic/libatomic_convenience.la 158 fi 159 AC_SUBST(LIBATOMIC) 160 161 # Used to tell GNU make to include a file without telling automake to 162 # include it. 163 go_include="-include" 164 AC_SUBST(go_include) 165 166 # All known GOOS values. This is the union of all operating systems 167 # supported by the gofrontend and all operating systems supported by 168 # the gc toolchain. 169 ALLGOOS="aix android darwin dragonfly freebsd hurd illumos ios irix js linux netbsd openbsd plan9 rtems solaris windows zos" 170 171 is_darwin=no 172 is_freebsd=no 173 is_irix=no 174 is_linux=no 175 is_netbsd=no 176 is_openbsd=no 177 is_dragonfly=no 178 is_rtems=no 179 is_solaris=no 180 is_aix=no 181 is_hurd=no 182 GOOS=unknown 183 case ${host} in 184 *-*-darwin*) is_darwin=yes; GOOS=darwin ;; 185 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;; 186 *-*-irix6*) is_irix=yes; GOOS=irix ;; 187 *-*-linux*) is_linux=yes; GOOS=linux ;; 188 *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;; 189 *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;; 190 *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;; 191 *-*-rtems*) is_rtems=yes; GOOS=rtems ;; 192 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;; 193 *-*-aix*) is_aix=yes; GOOS=aix ;; 194 *-*-gnu*) is_hurd=yes; GOOS=hurd ;; 195 esac 196 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes) 197 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes) 198 AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes) 199 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes) 200 AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes) 201 AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes) 202 AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes) 203 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes) 204 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes) 205 AM_CONDITIONAL(LIBGO_IS_AIX, test $is_aix = yes) 206 AM_CONDITIONAL(LIBGO_IS_HURD, test $is_hurd = yes) 207 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) 208 AC_SUBST(GOOS) 209 AC_SUBST(ALLGOOS) 210 211 dnl Test whether we need to use DejaGNU or whether we can use the 212 dnl simpler gotest approach. We can only use gotest for a native 213 dnl build. 214 USE_DEJAGNU=no 215 case ${host} in 216 *-*-rtems*) USE_DEJAGNU=yes ;; 217 ${build}) ;; 218 *) USE_DEJAGNU=yes ;; 219 esac 220 AC_SUBST(USE_DEJAGNU) 221 222 # All known GOARCH values. This is the union of all architectures 223 # supported by the gofrontend and all architectures supported by the 224 # gc toolchain. 225 # To add a new architecture: 226 # - add it to this list 227 # - if appropriate, add an entry to ALLGOARCHFAMILY below 228 # - add an entry to the case on ${host} below to set GOARCH 229 # - update goarchList in libgo/go/go/build/syslist.go 230 # - update goarch.sh to report the values for this architecture 231 # - update go-set-goarch in gcc/testsuite/go.test/go-test.exp 232 # - update ptrSizeMap and intSizeMap in libgo/go/cmd/cgo/main.go 233 # - update arch lists in libgo/match.sh 234 # - update arch lists in libgo/testsuite/gotest 235 # - update +build lines in several places 236 # - libgo/go/runtime/lfstack_NNbit.go 237 # - libgo/go/runtime/hashNN.go 238 # - libgo/go/runtime/unalignedN.go 239 # - libgo/go/syscall/endian_XX.go 240 # - possibly others 241 # - possibly update files in libgo/go/internal/syscall/unix 242 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" 243 244 # All known GOARCH family values. 245 ALLGOARCHFAMILY="I386 ALPHA AMD64 ARM ARM64 IA64 M68K MIPS MIPS64 NIOS2 PPC PPC64 RISCV RISCV64 S390 S390X SH SPARC SPARC64 WASM" 246 247 GOARCH=unknown 248 case ${host} in 249 alpha*-*-*) 250 GOARCH=alpha 251 ;; 252 aarch64-*-*) 253 GOARCH=arm64 254 ;; 255 aarch64_be-*-*) 256 GOARCH=arm64be 257 ;; 258 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) 259 GOARCH=arm 260 case ${host} in 261 arm*b*-*-*) 262 GOARCH=armbe 263 ;; 264 esac 265 ;; 266 changequote(,)dnl 267 i[34567]86-*-* | x86_64-*-*) 268 changequote([,])dnl 269 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 270 #ifdef __x86_64__ 271 #error 64-bit 272 #endif 273 ])], 274 [GOARCH=386], 275 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 276 #ifdef __ILP32__ 277 #error x32 278 #endif 279 ])], 280 [GOARCH=amd64], 281 [GOARCH=amd64p32])) 282 ;; 283 ia64-*-*) 284 GOARCH=ia64 285 ;; 286 m68k*-*-*) 287 GOARCH=m68k 288 ;; 289 mips*-*-*) 290 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 291 #if _MIPS_SIM != _ABIO32 292 #error not o32 293 #endif 294 ])], 295 [mips_abi="o32"], 296 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 297 #if _MIPS_SIM != _ABIN32 298 #error not n32 299 #endif 300 ])], 301 [mips_abi="n32"], 302 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 303 #if _MIPS_SIM != _ABI64 304 #error not n64 305 #endif 306 ])], 307 [mips_abi="n64"], 308 [AC_MSG_ERROR([unknown MIPS ABI]) 309 [mips_abi="n32"]])])]) 310 case "$mips_abi" in 311 "o32") GOARCH=mips ;; 312 "n32") GOARCH=mips64p32 ;; 313 "n64") GOARCH=mips64 ;; 314 esac 315 case "${host}" in 316 mips*el-*-*) 317 GOARCH="${GOARCH}le" 318 ;; 319 esac 320 ;; 321 nios2-*-*) 322 GOARCH=nios2 323 ;; 324 rs6000*-*-* | powerpc*-*-*) 325 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 326 #ifdef _ARCH_PPC64 327 #error 64-bit 328 #endif 329 ])], 330 [GOARCH=ppc], 331 [ 332 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 333 #if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) 334 #error 64be 335 #endif 336 ])], 337 [GOARCH=ppc64le], 338 [GOARCH=ppc64])]) 339 ;; 340 riscv*-*-*) 341 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 342 #if __riscv_xlen == 64 343 #error 64-bit 344 #endif 345 ])], 346 [GOARCH=riscv], 347 [GOARCH=riscv64]) 348 ;; 349 s390*-*-*) 350 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 351 #if defined(__s390x__) 352 #error 64-bit 353 #endif 354 ])], 355 [GOARCH=s390], 356 [GOARCH=s390x]) 357 ;; 358 sh3eb*-*-* | sh4eb*-*-*) 359 GOARCH=shbe 360 ;; 361 sh3*-*-* | sh4*-*-*) 362 GOARCH=sh 363 ;; 364 sparc*-*-*) 365 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 366 #if defined(__sparcv9) || defined(__arch64__) 367 #error 64-bit 368 #endif 369 ])], 370 [GOARCH=sparc], 371 [GOARCH=sparc64]) 372 ;; 373 esac 374 AC_SUBST(GOARCH) 375 AC_SUBST(ALLGOARCH) 376 AC_SUBST(ALLGOARCHFAMILY) 377 378 AM_CONDITIONAL(LIBGO_IS_X86, test "$GOARCH" = "386" -o "$GOARCH" = "amd64" -o "$GOARCH" = "amd64p32") 379 380 FUNCTION_DESCRIPTORS=false 381 case ${host} in 382 rs6000*-*-* | powerpc*-*-*) 383 AC_COMPILE_IFELSE([AC_LANG_SOURCE([ 384 #if _CALL_ELF == 1 385 #error descriptors 386 #endif 387 ])], 388 [FUNCTION_DESCRIPTORS=false], 389 [FUNCTION_DESCRIPTORS=true]) 390 ;; 391 esac 392 AC_SUBST(FUNCTION_DESCRIPTORS) 393 394 dnl Some files are only present when needed for specific architectures. 395 GO_LIBCALL_OS_FILE= 396 GO_LIBCALL_OS_ARCH_FILE= 397 GO_SYSCALL_OS_FILE= 398 GO_SYSCALL_OS_ARCH_FILE= 399 if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then 400 GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.go" 401 fi 402 if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then 403 GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go" 404 fi 405 if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then 406 GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go" 407 fi 408 if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then 409 GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go" 410 fi 411 AC_SUBST(GO_LIBCALL_OS_FILE) 412 AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) 413 AC_SUBST(GO_SYSCALL_OS_FILE) 414 AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) 415 416 dnl Special flags used to generate sysinfo.go. 417 OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" 418 case "$target" in 419 mips-sgi-irix6.5*) 420 # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct 421 # msghdr in <sys/socket.h>. 422 OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" 423 ;; 424 *-*-solaris2.*) 425 # Solaris 10+ needs this so struct msghdr gets the msg_control 426 # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as 427 # above doesn't work with C99. 428 OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" 429 ;; 430 esac 431 AC_SUBST(OSCFLAGS) 432 433 dnl Check if assembler supports disabling hardware capability support. 434 GCC_CHECK_ASSEMBLER_HWCAP 435 436 dnl Use -fsplit-stack when compiling C code if available. 437 AC_CACHE_CHECK([whether -fsplit-stack is supported], 438 [libgo_cv_c_split_stack_supported], 439 [CFLAGS_hold=$CFLAGS 440 CFLAGS="$CFLAGS -fsplit-stack" 441 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 442 [libgo_cv_c_split_stack_supported=yes], 443 [libgo_cv_c_split_stack_supported=no]) 444 CFLAGS=$CFLAGS_hold]) 445 446 dnl Make sure the linker permits -fsplit-stack. Old versions of gold will 447 dnl reject split-stack code calling non-split-stack code on targets 448 dnl they don't support. 449 AC_CACHE_CHECK([whether linker supports split/non-split linked together], 450 [libgo_cv_c_linker_split_non_split], 451 [cat > conftest1.c << EOF 452 extern void f(); 453 int main() { f(); return 0; } 454 EOF 455 cat > conftest2.c << EOF 456 void f() {} 457 EOF 458 $CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c >/dev/null 2>&1 459 $CC -c $CFLAGS $CPPFLAGS conftest2.c > /dev/null 2>&1 460 if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext > /dev/null 2>&1; then 461 libgo_cv_c_linker_split_non_split=yes 462 else 463 libgo_cv_c_linker_split_non_split=no 464 fi 465 rm -f conftest1.* conftest2.* conftest]) 466 467 if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then 468 SPLIT_STACK=-fsplit-stack 469 AC_DEFINE(USING_SPLIT_STACK, 1, 470 [Define if the compiler supports -fsplit-stack]) 471 else 472 SPLIT_STACK= 473 fi 474 AC_SUBST(SPLIT_STACK) 475 AM_CONDITIONAL(USING_SPLIT_STACK, 476 test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes) 477 478 dnl If the compiler supports split-stack but the linker does not, then 479 dnl we need to explicitly disable split-stack for Go. 480 if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = no; then 481 GO_SPLIT_STACK=-fno-split-stack 482 else 483 GO_SPLIT_STACK= 484 fi 485 AC_SUBST(GO_SPLIT_STACK) 486 487 dnl Check whether the linker does stack munging when calling from 488 dnl split-stack into non-split-stack code. We check this by looking 489 dnl at the --help output. FIXME: This is only half right: it's 490 dnl possible for the linker to support this for some targets but not 491 dnl others. 492 dnl This is slightly different from the above check, which is whether 493 dnl the linker permits the call at all. 494 AC_CACHE_CHECK([whether linker supports split stack], 495 [libgo_cv_c_linker_supports_split_stack], 496 [libgo_cv_c_linker_supports_split_stack=no 497 if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then 498 libgo_cv_c_linker_supports_split_stack=yes 499 fi]) 500 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then 501 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1, 502 [Define if the linker support split stack adjustments]) 503 fi 504 505 AC_CACHE_CHECK([whether compiler is llgo], 506 [libgo_cv_c_goc_is_llgo], 507 [libgo_cv_c_goc_is_llgo=no 508 if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then 509 libgo_cv_c_goc_is_llgo=yes 510 fi]) 511 AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes) 512 513 dnl Test for the -lm library. 514 MATH_LIBS= 515 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm) 516 AC_SUBST(MATH_LIBS) 517 518 dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac. 519 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets, 520 [libgo_cv_lib_sockets= 521 libgo_check_both=no 522 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes) 523 if test "$libgo_check_socket" = "yes"; then 524 unset ac_cv_func_connect 525 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket", 526 libgo_check_both=yes) 527 fi 528 if test "$libgo_check_both" = "yes"; then 529 libgo_old_libs=$LIBS 530 LIBS="$LIBS -lsocket -lnsl" 531 unset ac_cv_func_accept 532 AC_CHECK_FUNC(accept, 533 [libgo_check_nsl=no 534 libgo_cv_lib_sockets="-lsocket -lnsl"]) 535 unset ac_cv_func_accept 536 LIBS=$libgo_old_libs 537 fi 538 unset ac_cv_func_gethostbyname 539 libgo_old_libs="$LIBS" 540 AC_CHECK_FUNC(gethostbyname, , 541 [AC_CHECK_LIB(nsl, main, 542 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])]) 543 unset ac_cv_func_gethostbyname 544 AC_CHECK_FUNC(sendfile, , 545 [AC_CHECK_LIB(sendfile, main, 546 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lsendfile"])]) 547 LIBS=$libgo_old_libs 548 ]) 549 NET_LIBS="$libgo_cv_lib_sockets" 550 AC_SUBST(NET_LIBS) 551 552 dnl Test whether the compiler supports the -pthread option. 553 AC_CACHE_CHECK([whether -pthread is supported], 554 [libgo_cv_lib_pthread], 555 [CFLAGS_hold=$CFLAGS 556 CFLAGS="$CFLAGS -pthread -L../libatomic/.libs" 557 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 558 [libgo_cv_lib_pthread=yes], 559 [libgo_cv_lib_pthread=no]) 560 CFLAGS=$CFLAGS_hold]) 561 PTHREAD_CFLAGS= 562 if test "$libgo_cv_lib_pthread" = yes; then 563 # RISC-V apparently adds -latomic when using -pthread. 564 PTHREAD_CFLAGS="-pthread -L../libatomic/.libs" 565 fi 566 AC_SUBST(PTHREAD_CFLAGS) 567 568 dnl Test for the -lpthread library. 569 PTHREAD_LIBS= 570 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) 571 AC_SUBST(PTHREAD_LIBS) 572 573 dnl Test if -lucontext is required for makecontext. 574 AC_SEARCH_LIBS([makecontext], [ucontext]) 575 576 dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime. 577 AC_SEARCH_LIBS([sched_yield], [rt]) 578 AC_SEARCH_LIBS([nanosleep], [rt]) 579 AC_SEARCH_LIBS([clock_gettime], [rt]) 580 581 AC_C_BIGENDIAN 582 583 GCC_CHECK_UNWIND_GETIPINFO 584 585 AC_CHECK_HEADERS(fcntl.h 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/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.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 lwp.h) 586 587 AC_CHECK_HEADERS([netinet/icmp6.h], [], [], 588 [#include <netinet/in.h> 589 ]) 590 591 AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [], 592 [#ifdef HAVE_SYS_SOCKET_H 593 #include <sys/socket.h> 594 #endif 595 ]) 596 597 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes) 598 599 AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr memmem) 600 AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes) 601 AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes) 602 603 AC_STRUCT_DIRENT_D_TYPE 604 605 AC_CHECK_FUNCS(accept4 dup3 epoll_create1 faccessat fallocate fchmodat fchownat futimesat getxattr inotify_add_watch inotify_init inotify_init1 inotify_rm_watch listxattr mkdirat mknodat open64 openat pipe2 removexattr renameat setxattr sync_file_range splice syscall tee unlinkat unshare utimensat) 606 AC_TYPE_OFF_T 607 608 CFLAGS_hold="$CFLAGS" 609 CFLAGS="$OSCFLAGS $CFLAGS" 610 AC_CHECK_TYPES([loff_t], [], [], [[ 611 #include <sys/types.h> 612 #include <fcntl.h> 613 ]]) 614 CFLAGS="$CFLAGS_hold" 615 616 LIBS_hold="$LIBS" 617 LIBS="$LIBS -lm" 618 AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl) 619 LIBS="$LIBS_hold" 620 621 CFLAGS_hold="$CFLAGS" 622 CFLAGS="$CFLAGS $PTHREAD_CFLAGS" 623 LIBS_hold="$LIBS" 624 LIBS="$LIBS $PTHREAD_LIBS" 625 AC_CHECK_FUNCS(sem_timedwait) 626 CFLAGS="$CFLAGS_hold" 627 LIBS="$LIBS_hold" 628 629 LIBS_hold="$LIBS" 630 LIBS="$LIBS $MATH_LIBS" 631 AC_CHECK_FUNCS(matherr) 632 LIBS="$LIBS_hold" 633 634 dnl For x86 we want to use the -minline-all-stringops option to avoid 635 dnl forcing a stack split when calling memcpy and friends. 636 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops], 637 [libgo_cv_c_stringops], 638 [CFLAGS_hold=$CFLAGS 639 CFLAGS="$CFLAGS -minline-all-stringops" 640 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 641 [libgo_cv_c_stringops=yes], 642 [libgo_cv_c_stringops=no]) 643 CFLAGS=$CFLAGS_hold]) 644 STRINGOPS_FLAG= 645 if test "$libgo_cv_c_stringops" = yes; then 646 STRINGOPS_FLAG=-minline-all-stringops 647 fi 648 AC_SUBST(STRINGOPS_FLAG) 649 650 dnl For x86 we want to compile the math library with -mfancy-math-387 651 dnl so that we can use the builtin instructions directly. 652 AC_CACHE_CHECK([whether compiler supports -mfancy-math-387], 653 [libgo_cv_c_fancymath], 654 [CFLAGS_hold=$CFLAGS 655 CFLAGS="$CFLAGS -mfancy-math-387" 656 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 657 [libgo_cv_c_fancymath=yes], 658 [libgo_cv_c_fancymath=no]) 659 CFLAGS=$CFLAGS_hold]) 660 MATH_FLAG= 661 if test "$libgo_cv_c_fancymath" = yes; then 662 MATH_FLAG="-mfancy-math-387" 663 fi 664 MATH_FLAG="${MATH_FLAG} -ffp-contract=off -fno-math-errno -fno-trapping-math" 665 AC_SUBST(MATH_FLAG) 666 667 CFLAGS_hold=$CFLAGS 668 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE" 669 AC_CHECK_TYPES([off64_t]) 670 CFLAGS=$CFLAGS_hold 671 672 dnl Work out the size of the epoll_events struct on GNU/Linux. 673 AC_CACHE_CHECK([epoll_event size], 674 [libgo_cv_c_epoll_event_size], 675 [AC_COMPUTE_INT(libgo_cv_c_epoll_event_size, 676 [sizeof (struct epoll_event)], 677 [#include <sys/epoll.h>], 678 [libgo_cv_c_epoll_event_size=0])]) 679 SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size} 680 AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT) 681 682 dnl Work out the offset of the fd field in the epoll_events struct on 683 dnl GNU/Linux. 684 AC_CACHE_CHECK([epoll_event data.fd offset], 685 [libgo_cv_c_epoll_event_fd_offset], 686 [AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset, 687 [offsetof (struct epoll_event, data.fd)], 688 [#include <stddef.h> 689 #include <sys/epoll.h>], 690 [libgo_cv_c_epoll_event_fd_offset=0])]) 691 STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset} 692 AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET) 693 694 dnl Check if <sys/stat.h> uses timespec_t for st_?tim members. Introduced 695 dnl in Solaris 11.4 for XPG7 compatibility. 696 AC_EGREP_HEADER([timespec_t.*st_atim], [sys/stat.h], 697 [have_stat_timespec=yes], [have_stat_timespec=no]) 698 AM_CONDITIONAL(HAVE_STAT_TIMESPEC, test $have_stat_timespec = yes) 699 700 dnl See if struct exception is defined in <math.h>. 701 AC_CHECK_TYPE([struct exception], 702 [libgo_has_struct_exception=yes], 703 [libgo_has_struct_exception=no], 704 [#include <math.h>]) 705 if test "$libgo_has_struct_exception" = "yes"; then 706 AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1, 707 [Define to 1 if <math.h> defines struct exception]) 708 fi 709 710 dnl See whether setcontext changes the value of TLS variables. 711 AC_CACHE_CHECK([whether setcontext clobbers TLS variables], 712 [libgo_cv_lib_setcontext_clobbers_tls], 713 [CFLAGS_hold="$CFLAGS" 714 CFLAGS="$PTHREAD_CFLAGS" 715 LIBS_hold="$LIBS" 716 LIBS="$LIBS $PTHREAD_LIBS" 717 AC_CHECK_SIZEOF([void *]) 718 AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8]) 719 AC_RUN_IFELSE( 720 [AC_LANG_SOURCE([ 721 #include <pthread.h> 722 #include <stdlib.h> 723 #include <ucontext.h> 724 #include <unistd.h> 725 726 __thread int tls; 727 728 static char stack[[10 * 1024 * 1024]]; 729 static ucontext_t c; 730 731 /* Called via makecontext/setcontext. */ 732 733 static void 734 cfn (void) 735 { 736 exit (tls); 737 } 738 739 /* Called via pthread_create. */ 740 741 static void * 742 tfn (void *dummy) 743 { 744 /* The thread should still see this value after calling 745 setcontext. */ 746 tls = 0; 747 748 setcontext (&c); 749 750 /* The call to setcontext should not return. */ 751 abort (); 752 } 753 754 int 755 main () 756 { 757 pthread_t tid; 758 759 /* The thread should not see this value. */ 760 tls = 1; 761 762 if (getcontext (&c) < 0) 763 abort (); 764 765 c.uc_stack.ss_sp = stack; 766 #ifdef MAKECONTEXT_STACK_TOP 767 c.uc_stack.ss_sp += sizeof stack; 768 #endif 769 c.uc_stack.ss_flags = 0; 770 c.uc_stack.ss_size = sizeof stack; 771 c.uc_link = NULL; 772 makecontext (&c, cfn, 0); 773 774 if (pthread_create (&tid, NULL, tfn, NULL) != 0) 775 abort (); 776 777 if (pthread_join (tid, NULL) != 0) 778 abort (); 779 780 /* The thread should have called exit. */ 781 abort (); 782 } 783 ])], 784 [libgo_cv_lib_setcontext_clobbers_tls=no], 785 [libgo_cv_lib_setcontext_clobbers_tls=yes], 786 [case "$target:$ptr_type_size" in 787 i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64) 788 libgo_cv_lib_setcontext_clobbers_tls=yes ;; 789 *) 790 libgo_cv_lib_setcontext_clobbers_tls=no ;; 791 esac 792 ]) 793 CFLAGS="$CFLAGS_hold" 794 LIBS="$LIBS_hold" 795 ]) 796 if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then 797 AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1, 798 [Define if setcontext clobbers TLS variables]) 799 fi 800 801 AC_CACHE_CHECK([whether .eh_frame section should be read-only], 802 libgo_cv_ro_eh_frame, [ 803 libgo_cv_ro_eh_frame=no 804 echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c 805 if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then 806 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then 807 libgo_cv_ro_eh_frame=yes 808 elif grep '.section.*eh_frame.*#alloc' conftest.c \ 809 | grep -v '#write' > /dev/null; then 810 libgo_cv_ro_eh_frame=yes 811 fi 812 fi 813 rm -f conftest.* 814 ]) 815 if test "x$libgo_cv_ro_eh_frame" = xyes; then 816 AC_DEFINE(EH_FRAME_FLAGS, "a", 817 [Define to the flags needed for the .section .eh_frame directive.]) 818 else 819 AC_DEFINE(EH_FRAME_FLAGS, "aw", 820 [Define to the flags needed for the .section .eh_frame directive.]) 821 fi 822 823 AC_CACHE_CHECK([if compiler supports -Qunused-arguments], 824 [libgo_cv_c_unused_arguments], 825 [CFLAGS_hold=$CFLAGS 826 CFLAGS="$CFLAGS -Qunused-arguments" 827 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], 828 [libgo_cv_c_unused_arguments=yes], 829 [libgo_cv_c_unused_arguments=no]) 830 CFLAGS=$CFLAGS_hold]) 831 832 AC_CACHE_CHECK([if assembler supports GNU comdat group syntax], 833 libgo_cv_as_comdat_gnu, [ 834 echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s 835 CFLAGS_hold=$CFLAGS 836 if test "$libgo_cv_c_unused_arguments" = yes; then 837 CFLAGS="$CFLAGS -Qunused-arguments" 838 fi 839 if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then 840 libgo_cv_as_comdat_gnu=yes 841 else 842 libgo_cv_as_comdat_gnu=no 843 fi 844 CFLAGS=$CFLAGS_hold 845 ]) 846 if test "x$libgo_cv_as_comdat_gnu" = xyes; then 847 AC_DEFINE(HAVE_AS_COMDAT_GAS, 1, 848 [Define if your assembler supports GNU comdat group syntax.]) 849 fi 850 851 AC_CACHE_CHECK([assembler supports pc related relocs], 852 libgo_cv_as_x86_pcrel, [ 853 libgo_cv_as_x86_pcrel=yes 854 echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s 855 CFLAGS_hold=$CFLAGS 856 if test "$libgo_cv_c_unused_arguments" = yes; then 857 CFLAGS="$CFLAGS -Qunused-arguments" 858 fi 859 if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then 860 libgo_cv_as_x86_pcrel=no 861 fi 862 CFLAGS=$CFLAGS_hold 863 ]) 864 if test "x$libgo_cv_as_x86_pcrel" = xyes; then 865 AC_DEFINE(HAVE_AS_X86_PCREL, 1, 866 [Define if your assembler supports PC relative relocs.]) 867 fi 868 869 AC_CACHE_CHECK([assembler supports unwind section type], 870 libgo_cv_as_x86_64_unwind_section_type, [ 871 libgo_cv_as_x86_64_unwind_section_type=yes 872 echo '.section .eh_frame,"a",@unwind' > conftest.s 873 CFLAGS_hold=$CFLAGS 874 if test "$libgo_cv_c_unused_arguments" = yes; then 875 CFLAGS="$CFLAGS -Qunused-arguments" 876 fi 877 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then 878 libgo_cv_as_x86_64_unwind_section_type=no 879 fi 880 CFLAGS=$CFLAGS_hold 881 ]) 882 if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then 883 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, 884 [Define if your assembler supports unwind section type.]) 885 fi 886 887 AC_CACHE_CHECK([assembler supports AES instructions], 888 libgo_cv_as_x86_aes, [ 889 libgo_cv_as_x86_aes=yes 890 echo 'aesenc %xmm0, %xmm1' > conftest.s 891 CFLAGS_hold=$CFLAGS 892 if test "$libgo_cv_c_unused_arguments" = yes; then 893 CFLAGS="$CFLAGS -Qunused-arguments" 894 fi 895 if $CC $CFLAGS -c conftest.s 2>&1 | grep -i error > /dev/null; then 896 libgo_cv_as_x86_aes=no 897 fi 898 CFLAGS=$CFLAGS_hold 899 ]) 900 if test "x$libgo_cv_as_x86_aes" = xyes; then 901 AC_DEFINE(HAVE_AS_X86_AES, 1, 902 [Define if your assembler supports AES instructions.]) 903 fi 904 905 dnl Test whether the linker supports the -static option. 906 AC_CACHE_CHECK([whether -static is supported], 907 [libgo_cv_ld_static], 908 [LDFLAGS_hold=$LDFLAGS 909 LDFLAGS="$LDFLAGS -static" 910 AC_LINK_IFELSE([AC_LANG_PROGRAM(,)], 911 [libgo_cv_ld_static=yes], 912 [libgo_cv_ld_static=no]) 913 LDFLAGS=$LDFLAGS_hold]) 914 AM_CONDITIONAL(HAVE_STATIC_LINK, test "$libgo_cv_ld_static" = yes) 915 916 AC_CACHE_SAVE 917 918 if test ${multilib} = yes; then 919 multilib_arg="--enable-multilib" 920 else 921 multilib_arg= 922 fi 923 924 AC_CONFIG_FILES(Makefile testsuite/Makefile testsuite/libgo-test-support.exp) 925 926 AC_CONFIG_COMMANDS([default], 927 [if test -n "$CONFIG_FILES"; then 928 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so 929 # that multilib installs will end up installed in the correct place. 930 # The testsuite needs it for multilib-aware ABI baseline files. 931 # To work around this not being passed down from config-ml.in -> 932 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 933 # append it here. Only modify Makefiles that have just been created. 934 # 935 # Also, get rid of this simulated-VPATH thing that automake does. 936 cat > vpsed << \_EOF 937 s!`test -f '$<' || echo '$(srcdir)/'`!! 938 _EOF 939 for i in $SUBDIRS; do 940 case $CONFIG_FILES in 941 *${i}/Makefile*) 942 #echo "Adding MULTISUBDIR to $i/Makefile" 943 sed -f vpsed $i/Makefile > tmp 944 grep '^MULTISUBDIR =' Makefile >> tmp 945 mv tmp $i/Makefile 946 ;; 947 esac 948 done 949 rm vpsed 950 fi 951 ], 952 [ 953 # Variables needed in config.status (file generation) which aren't already 954 # passed by autoconf. 955 SUBDIRS="$SUBDIRS" 956 ]) 957 958 AC_OUTPUT