blob: 09add8d136bf61a8fef81c7d927108a665aa770f [file] [log] [blame]
Ian Lance Taylor7a938932010-12-03 04:34:57 +00001# 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
9AC_PREREQ(2.64)
10AC_INIT(package-unused, version-unused,, libgo)
11AC_CONFIG_SRCDIR(Makefile.am)
12AC_CONFIG_HEADER(config.h)
13
Ian Lance Taylorc5fe5e82016-07-26 01:53:27 +000014libtool_VERSION=10:0:0
Ian Lance Taylor7a938932010-12-03 04:34:57 +000015AC_SUBST(libtool_VERSION)
16
17AM_ENABLE_MULTILIB(, ..)
18
19AC_CANONICAL_SYSTEM
20target_alias=${target_alias-$host_alias}
21
Ian Lance Tayloree6440f2012-09-20 16:32:27 +000022AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist -Wall -Wno-portability])
Ian Lance Taylor7a938932010-12-03 04:34:57 +000023AH_TEMPLATE(PACKAGE, [Name of package])
24AH_TEMPLATE(VERSION, [Version number of package])
25
26m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS])
27m4_define([_AC_ARG_VAR_PRECIOUS],[])
28AC_PROG_CC
29AC_PROG_GO
30m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
31
32AC_SUBST(CFLAGS)
33
34AM_MAINTAINER_MODE
35
36AC_PROG_LD
37AC_PROG_RANLIB
38AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy)
39
40AC_LIBTOOL_DLOPEN
41AM_PROG_LIBTOOL
42AC_SUBST(enable_shared)
43AC_SUBST(enable_static)
44
Ian Lance Taylord983a802011-07-11 20:27:50 +000045CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
46AC_SUBST(CC_FOR_BUILD)
47
Ian Lance Taylorde27caa2011-10-23 19:04:37 +000048AC_PROG_AWK
49
Ian Lance Taylor7a938932010-12-03 04:34:57 +000050WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
51AC_SUBST(WARN_FLAGS)
52
Ian Lance Taylor0d4668c2013-01-26 00:13:34 +000053AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror],
54 [turns on -Werror @<:@default=yes@:>@])])
55if test "x$enable_werror" != "xno"; then
56 WERROR="-Werror"
57fi
Ian Lance Taylor7a938932010-12-03 04:34:57 +000058AC_SUBST(WERROR)
59
60glibgo_toolexecdir=no
61glibgo_toolexeclibdir=no
Ian Lance Taylor7a938932010-12-03 04:34:57 +000062
63AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
64AC_ARG_ENABLE([version-specific-runtime-libs],
65 AC_HELP_STRING([--enable-version-specific-runtime-libs],
66 [Specify that runtime libraries should be installed in a compiler-specific directory]),
67 [case "$enableval" in
68 yes) version_specific_libs=yes ;;
69 no) version_specific_libs=no ;;
70 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
71 esac],
72 [version_specific_libs=no])
73AC_MSG_RESULT($version_specific_libs)
74
75# Version-specific runtime libs processing.
76if test $version_specific_libs = yes; then
77 glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
78 glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
79fi
80
81# Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
82# Install a library built with a cross compiler in tooldir, not libdir.
Ian Lance Taylor317ea7c2012-02-14 19:40:09 +000083if test -n "$with_cross_host" &&
84 test x"$with_cross_host" != x"no"; then
85 nover_glibgo_toolexecdir='${exec_prefix}/${host_alias}'
86 nover_glibgo_toolexeclibdir='${toolexecdir}/lib'
87else
88 nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
89 nover_glibgo_toolexeclibdir='${libdir}'
90fi
Ian Lance Taylor6c76a952014-05-01 00:35:58 +000091multi_os_directory=`$GOC -print-multi-os-directory`
Ian Lance Taylor317ea7c2012-02-14 19:40:09 +000092case $multi_os_directory in
93 .) ;; # Avoid trailing /.
94 *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;;
95esac
96
Ian Lance Taylor7a938932010-12-03 04:34:57 +000097if test x"$glibgo_toolexecdir" = x"no"; then
Ian Lance Taylor317ea7c2012-02-14 19:40:09 +000098 glibgo_toolexecdir="${nover_glibgo_toolexecdir}"
99 glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}"
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000100fi
101
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000102AC_SUBST(glibgo_toolexecdir)
103AC_SUBST(glibgo_toolexeclibdir)
Ian Lance Taylor317ea7c2012-02-14 19:40:09 +0000104AC_SUBST(nover_glibgo_toolexeclibdir)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000105
106# See if the user wants to configure without libffi. Some
107# architectures don't support it. FIXME: We should set a default
108# based on the host.
109AC_ARG_WITH(libffi,
110 AS_HELP_STRING([--without-libffi],
111 [don't use libffi]),
112 [:],
113 [with_libffi=${with_libffi_default-yes}])
114
115LIBFFI=
116LIBFFIINCS=
117if test "$with_libffi" != no; then
118 AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
119 LIBFFI=../libffi/libffi_convenience.la
120 LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
121fi
122AC_SUBST(LIBFFI)
123AC_SUBST(LIBFFIINCS)
124
Ian Lance Taylor9a85ed02014-05-29 20:22:27 +0000125# See if the user wants to configure without libatomic. This is useful if we are
126# on an architecture for which libgo does not need an atomic support library and
127# libatomic does not support our C compiler.
128AC_ARG_WITH(libatomic,
129 AS_HELP_STRING([--without-libatomic],
130 [don't use libatomic]),
131 [:],
132 [with_libatomic=${with_libatomic_default-yes}])
133
134LIBATOMIC=
135if test "$with_libatomic" != no; then
136 LIBATOMIC=../libatomic/libatomic_convenience.la
137fi
138AC_SUBST(LIBATOMIC)
139
Ian Lance Taylor18c70072011-12-03 00:16:12 +0000140# Used to tell GNU make to include a file without telling automake to
141# include it.
142go_include="-include"
143AC_SUBST(go_include)
144
Ian Lance Taylora8464242016-09-11 13:23:27 +0000145# All known GOOS values. This is the union of all operating systems
146# supported by the gofrontend and all operating systems supported by
147# the gc toolchain.
148ALLGOOS="android darwin dragonfly freebsd irix linux netbsd openbsd plan9 rtems solaris windows"
149
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000150is_darwin=no
151is_freebsd=no
Ian Lance Taylor654d2ec2011-03-31 23:55:21 +0000152is_irix=no
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000153is_linux=no
Ian Lance Taylor1efa38d2012-01-17 14:18:39 +0000154is_netbsd=no
Ian Lance Taylor4ccad562012-10-23 04:31:11 +0000155is_openbsd=no
Ian Lance Taylorf038dae2013-11-06 19:49:01 +0000156is_dragonfly=no
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000157is_rtems=no
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000158is_solaris=no
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000159GOOS=unknown
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000160case ${host} in
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000161 *-*-darwin*) is_darwin=yes; GOOS=darwin ;;
162 *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;;
Ian Lance Taylor654d2ec2011-03-31 23:55:21 +0000163 *-*-irix6*) is_irix=yes; GOOS=irix ;;
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000164 *-*-linux*) is_linux=yes; GOOS=linux ;;
Ian Lance Taylordf4aa892012-01-13 05:11:45 +0000165 *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;;
Ian Lance Taylor4ccad562012-10-23 04:31:11 +0000166 *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;;
Ian Lance Taylorf038dae2013-11-06 19:49:01 +0000167 *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;;
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000168 *-*-rtems*) is_rtems=yes; GOOS=rtems ;;
169 *-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000170esac
171AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
172AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
Ian Lance Taylor654d2ec2011-03-31 23:55:21 +0000173AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000174AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
Ian Lance Taylordf4aa892012-01-13 05:11:45 +0000175AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes)
Ian Lance Taylor4ccad562012-10-23 04:31:11 +0000176AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes)
Ian Lance Taylor824393b2013-11-19 02:11:38 +0000177AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000178AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000179AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
Ian Lance Taylor22b955c2016-07-22 18:15:38 +0000180AM_CONDITIONAL(LIBGO_IS_BSD, test $is_darwin = yes -o $is_dragonfly = yes -o $is_freebsd = yes -o $is_netbsd = yes -o $is_openbsd = yes)
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000181AC_SUBST(GOOS)
Ian Lance Taylora8464242016-09-11 13:23:27 +0000182AC_SUBST(ALLGOOS)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000183
Ian Lance Taylor7134cf22013-02-05 22:22:17 +0000184dnl Test whether we need to use DejaGNU or whether we can use the
185dnl simpler gotest approach. We can only use gotest for a native
186dnl build.
187USE_DEJAGNU=no
188case ${host} in
189 *-*-rtems*) USE_DEJAGNU=yes ;;
Ian Lance Taylor553752e2013-02-07 18:01:54 +0000190 ${build}) ;;
Ian Lance Taylor7134cf22013-02-05 22:22:17 +0000191 *) USE_DEJAGNU=yes ;;
192esac
193AC_SUBST(USE_DEJAGNU)
194
Ian Lance Taylora8464242016-09-11 13:23:27 +0000195# All known GOARCH values. This is the union of all architectures
196# supported by the gofrontend and all architectures supported by the
197# gc toolchain.
198# N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
199ALLGOARCH="386 alpha amd64 amd64p32 arm armbe arm64 arm64be ia64 m68k mipso32 mipsn32 mipso64 mipsn64 mips mipsle mips64 mips64le mips64p32 mips64pe32le ppc ppc64 ppc64le s390 s390x sparc sparc64"
200
201# All known GOARCH_FAMILY values.
202ALLGOARCHFAMILY="I386 ALPHA AMD64 ARM ARM64 IA64 M68K MIPS MIPS64 PPC PPC64 S390 S390X SPARC SPARC64"
203
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000204GOARCH=unknown
Ian Lance Taylora8464242016-09-11 13:23:27 +0000205GOARCH_FAMILY=unknown
206GOARCH_BIGENDIAN=0
207GOARCH_CACHELINESIZE=64
208GOARCH_PHYSPAGESIZE=4096
209GOARCH_PCQUANTUM=1
210GOARCH_INT64ALIGN=8
211GOARCH_HUGEPAGESIZE=0
212GOARCH_MINFRAMESIZE=0
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000213case ${host} in
Ian Lance Taylore59b9172011-04-01 23:02:16 +0000214 alpha*-*-*)
Ian Lance Taylore59b9172011-04-01 23:02:16 +0000215 GOARCH=alpha
Ian Lance Taylora8464242016-09-11 13:23:27 +0000216 GOARCH_FAMILY=ALPHA
217 GOARCH_PHYSPAGESIZE=8192
218 GOARCH_PCQUANTUM=4
Ian Lance Taylore59b9172011-04-01 23:02:16 +0000219 ;;
Ian Lance Taylor71d0d502014-01-06 19:24:23 +0000220 aarch64-*-*)
Ian Lance Taylor71d0d502014-01-06 19:24:23 +0000221 GOARCH=arm64
Ian Lance Taylora8464242016-09-11 13:23:27 +0000222 GOARCH_FAMILY=ARM64
223 GOARCH_CACHELINESIZE=32
224 GOARCH_PHYSPAGESIZE=65536
Ian Lance Taylorf6c7d672016-09-14 20:52:51 +0000225 GOARCH_PCQUANTUM=4
Ian Lance Taylora8464242016-09-11 13:23:27 +0000226 GOARCH_MINFRAMESIZE=8
Ian Lance Taylor71d0d502014-01-06 19:24:23 +0000227 ;;
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000228 arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000229 GOARCH=arm
Ian Lance Taylora8464242016-09-11 13:23:27 +0000230 GOARCH_FAMILY=ARM
231 GOARCH_CACHELINESIZE=32
232 GOARCH_PCQUANTUM=4
Ian Lance Taylora8464242016-09-11 13:23:27 +0000233 GOARCH_MINFRAMESIZE=4
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000234 ;;
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000235changequote(,)dnl
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000236 i[34567]86-*-* | x86_64-*-*)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000237changequote([,])dnl
Ian Lance Taylor4a299bf2011-02-10 23:43:42 +0000238 AC_COMPILE_IFELSE([
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000239#ifdef __x86_64__
240#error 64-bit
241#endif],
Ian Lance Taylora8464242016-09-11 13:23:27 +0000242[GOARCH=386
243GOARCH_FAMILY=I386
244GOARCH_INT64ALIGN=4
245GOARCH_HUGEPAGESIZE="1 << 21"
246],
247[GOARCH=amd64
248GOARCH_FAMILY=AMD64
249GOARCH_HUGEPAGESIZE="1 << 21"
250])
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000251 ;;
Ian Lance Taylor4f8e6882016-08-07 22:32:46 +0000252 ia64-*-*)
Ian Lance Taylor4f8e6882016-08-07 22:32:46 +0000253 GOARCH=ia64
Ian Lance Taylora8464242016-09-11 13:23:27 +0000254 GOARCH_FAMILY=IA64
255 GOARCH_CACHELINESIZE=16384
Ian Lance Taylor307dde62016-11-01 21:45:32 +0000256 GOARCH_PHYSPAGESIZE=65536
Ian Lance Taylor4f8e6882016-08-07 22:32:46 +0000257 ;;
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000258 m68k*-*-*)
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000259 GOARCH=m68k
Ian Lance Taylora8464242016-09-11 13:23:27 +0000260 GOARCH_FAMILY=M68K
261 GOARCH_BIGENDIAN=1
262 GOARCH_CACHELINESIZE=16
263 GOARCH_PCQUANTUM=4
Ian Lance Taylor0f366722016-11-11 14:52:35 +0000264 GOARCH_INT64ALIGN=2
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000265 ;;
266 mips*-*-*)
Ian Lance Taylor4a299bf2011-02-10 23:43:42 +0000267 AC_COMPILE_IFELSE([
Ian Lance Taylor85a09212011-04-01 00:17:10 +0000268#if _MIPS_SIM != _ABIO32
269#error not o32
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000270#endif],
Ian Lance Taylor85a09212011-04-01 00:17:10 +0000271[mips_abi="o32"],
272 [AC_COMPILE_IFELSE([
273#if _MIPS_SIM != _ABIN32
274#error not n32
275#endif],
276[mips_abi="n32"],
277 [AC_COMPILE_IFELSE([
278#if _MIPS_SIM != _ABI64
279#error not n64
280#endif],
281[mips_abi="n64"],
282 [AC_COMPILE_IFELSE([
283#if _MIPS_SIM != _ABIO64
284#error not o64
285#endif],
286[mips_abi="o64"],
287 [AC_MSG_ERROR([unknown MIPS ABI])
288[mips_abi="n32"]])])])])
289 case "$mips_abi" in
290 "o32") GOARCH=mipso32 ;;
291 "n32") GOARCH=mipsn32 ;;
292 "n64") GOARCH=mipsn64 ;;
293 "o64") GOARCH=mipso64 ;;
294 esac
Ian Lance Taylora8464242016-09-11 13:23:27 +0000295 case "$mips_abi" in
296 "o32" | "n32")
297 GOARCH_FAMILY=MIPS
Ian Lance Taylora8464242016-09-11 13:23:27 +0000298 GOARCH_MINFRAMESIZE=4
299 ;;
300 "n64" | "o64")
301 GOARCH_FAMILY=MIPS64
302 GOARCH_MINFRAMESIZE=8
303 ;;
304 esac
305 case "${host}" in
306 mips*el)
307 ;;
308 *)
309 GOARCH_BIGENDIAN=1
310 ;;
311 esac
312 GOARCH_CACHELINESIZE=32
313 GOARCH_PHYSPAGESIZE=16384
314 GOARCH_PCQUANTUM=4
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000315 ;;
316 rs6000*-*-* | powerpc*-*-*)
Ian Lance Taylor4a299bf2011-02-10 23:43:42 +0000317 AC_COMPILE_IFELSE([
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000318#ifdef _ARCH_PPC64
319#error 64-bit
320#endif],
Ian Lance Taylora8464242016-09-11 13:23:27 +0000321[GOARCH=ppc
322GOARCH_FAMILY=PPC
323GOARCH_BIGENDIAN=1
Ian Lance Taylora8464242016-09-11 13:23:27 +0000324],
325 [
326GOARCH_FAMILY=PPC64
327AC_COMPILE_IFELSE([
Ian Lance Taylor6f7ccaf2014-11-21 18:22:05 +0000328#if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__)
329#error 64be
330#endif],
Ian Lance Taylora8464242016-09-11 13:23:27 +0000331[GOARCH=ppc64le
332],
333[GOARCH=ppc64
334GOARCH_BIGENDIAN=1
335])])
336 GOARCH_PHYSPAGESIZE=65536
337 GOARCH_PCQUANTUM=4
338 GOARCH_MINFRAMESIZE=32
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000339 ;;
Ian Lance Taylor1fec5f52014-11-04 22:39:30 +0000340 s390*-*-*)
341 AC_COMPILE_IFELSE([
342#if defined(__s390x__)
343#error 64-bit
344#endif],
Ian Lance Taylora8464242016-09-11 13:23:27 +0000345[GOARCH=s390
346GOARCH_FAMILY=S390
Ian Lance Taylora8464242016-09-11 13:23:27 +0000347GOARCH_MINFRAMESIZE=4
348], [GOARCH=s390x
349GOARCH_FAMILY=S390X
350GOARCH_MINFRAMESIZE=8
351])
352 GOARCH_BIGENDIAN=1
353 GOARCH_CACHELINESIZE=256
354 GOARCH_PCQUANTUM=2
Ian Lance Taylor1fec5f52014-11-04 22:39:30 +0000355 ;;
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000356 sparc*-*-*)
Ian Lance Taylor4a299bf2011-02-10 23:43:42 +0000357 AC_COMPILE_IFELSE([
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000358#if defined(__sparcv9) || defined(__arch64__)
359#error 64-bit
360#endif],
Ian Lance Taylora8464242016-09-11 13:23:27 +0000361[GOARCH=sparc
362GOARCH_FAMILY=SPARC
Ian Lance Taylora8464242016-09-11 13:23:27 +0000363],
364[GOARCH=sparc64
365GOARCH_FAMILY=SPARC64
366])
367 GOARCH_BIGENDIAN=1
368 GOARCH_PHYSPAGESIZE=8192
369 GOARCH_PCQUANTUM=4
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000370 ;;
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000371esac
Ian Lance Taylorc3b5b972011-01-12 02:03:46 +0000372AC_SUBST(GOARCH)
Ian Lance Taylora8464242016-09-11 13:23:27 +0000373AC_SUBST(GOARCH_FAMILY)
374AC_SUBST(GOARCH_BIGENDIAN)
375AC_SUBST(GOARCH_CACHELINESIZE)
376AC_SUBST(GOARCH_PHYSPAGESIZE)
377AC_SUBST(GOARCH_PCQUANTUM)
378AC_SUBST(GOARCH_INT64ALIGN)
379AC_SUBST(GOARCH_HUGEPAGESIZE)
380AC_SUBST(GOARCH_MINFRAMESIZE)
381AC_SUBST(ALLGOARCH)
382AC_SUBST(ALLGOARCHFAMILY)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000383
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000384dnl Some files are only present when needed for specific architectures.
Ian Lance Taylorde27caa2011-10-23 19:04:37 +0000385GO_LIBCALL_OS_FILE=
386GO_LIBCALL_OS_ARCH_FILE=
387GO_SYSCALL_OS_FILE=
388GO_SYSCALL_OS_ARCH_FILE=
Ian Lance Taylor204b9fc2014-10-17 00:03:20 +0000389if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then
390 GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.go"
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000391fi
Ian Lance Taylor204b9fc2014-10-17 00:03:20 +0000392if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then
393 GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go"
Ian Lance Taylorde27caa2011-10-23 19:04:37 +0000394fi
Ian Lance Taylor204b9fc2014-10-17 00:03:20 +0000395if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then
396 GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go"
Ian Lance Taylorde27caa2011-10-23 19:04:37 +0000397fi
Ian Lance Taylor204b9fc2014-10-17 00:03:20 +0000398if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then
399 GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go"
Ian Lance Taylorde27caa2011-10-23 19:04:37 +0000400fi
401AC_SUBST(GO_LIBCALL_OS_FILE)
402AC_SUBST(GO_LIBCALL_OS_ARCH_FILE)
403AC_SUBST(GO_SYSCALL_OS_FILE)
404AC_SUBST(GO_SYSCALL_OS_ARCH_FILE)
Ian Lance Taylorca11cc92011-01-24 23:42:22 +0000405
Ian Lance Taylord48be5d2011-12-20 18:14:30 +0000406dnl Special flags used to generate sysinfo.go.
407OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
Ian Lance Taylor90630d12011-04-01 05:11:23 +0000408case "$target" in
Ian Lance Taylor9f3b1e62011-04-25 19:36:12 +0000409 mips-sgi-irix6.5*)
410 # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct
411 # msghdr in <sys/socket.h>.
Ian Lance Taylord48be5d2011-12-20 18:14:30 +0000412 OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500"
Ian Lance Taylor9f3b1e62011-04-25 19:36:12 +0000413 ;;
Ian Lance Taylor90630d12011-04-01 05:11:23 +0000414 *-*-solaris2.1[[01]])
415 # Solaris 10+ needs this so struct msghdr gets the msg_control
Ian Lance Taylorbbe847a2011-12-22 20:39:29 +0000416 # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as
Ian Lance Taylor90630d12011-04-01 05:11:23 +0000417 # above doesn't work with C99.
Ian Lance Taylorbbe847a2011-12-22 20:39:29 +0000418 OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__"
Ian Lance Taylor90630d12011-04-01 05:11:23 +0000419 ;;
420esac
421AC_SUBST(OSCFLAGS)
422
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000423dnl Use -fsplit-stack when compiling C code if available.
424AC_CACHE_CHECK([whether -fsplit-stack is supported],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000425[libgo_cv_c_split_stack_supported],
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000426[CFLAGS_hold=$CFLAGS
427CFLAGS="$CFLAGS -fsplit-stack"
428AC_COMPILE_IFELSE([[int i;]],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000429[libgo_cv_c_split_stack_supported=yes],
430[libgo_cv_c_split_stack_supported=no])
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000431CFLAGS=$CFLAGS_hold])
Ian Lance Taylorc33c18c2015-09-15 17:05:14 +0000432
433dnl Make sure the linker permits -fsplit-stack. Old versions of gold will
434dnl reject split-stack code calling non-split-stack code on targets
435dnl they don't support.
436AC_CACHE_CHECK([whether linker supports split/non-split linked together],
437[libgo_cv_c_linker_split_non_split],
438[cat > conftest1.c << EOF
439extern void f();
440int main() { f(); return 0; }
441EOF
442cat > conftest2.c << EOF
443void f() {}
444EOF
Ian Lance Taylor207f8442016-10-11 13:13:17 +0000445$CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c >/dev/null 2>&1
446$CC -c $CFLAGS $CPPFLAGS conftest2.c > /dev/null 2>&1
447if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext > /dev/null 2>&1; then
Ian Lance Taylorc33c18c2015-09-15 17:05:14 +0000448 libgo_cv_c_linker_split_non_split=yes
449else
450 libgo_cv_c_linker_split_non_split=no
451fi
452rm -f conftest1.* conftest2.* conftest])
453
454if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000455 SPLIT_STACK=-fsplit-stack
456 AC_DEFINE(USING_SPLIT_STACK, 1,
457 [Define if the compiler supports -fsplit-stack])
458else
459 SPLIT_STACK=
460fi
461AC_SUBST(SPLIT_STACK)
462AM_CONDITIONAL(USING_SPLIT_STACK,
Ian Lance Taylorc33c18c2015-09-15 17:05:14 +0000463 test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000464
Ian Lance Taylora2bf11d2015-09-15 21:15:37 +0000465dnl If the compiler supports split-stack but the linker does not, then
466dnl we need to explicitly disable split-stack for Go.
467if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = no; then
468 GO_SPLIT_STACK=-fno-split-stack
469else
470 GO_SPLIT_STACK=
471fi
472AC_SUBST(GO_SPLIT_STACK)
473
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000474dnl Check whether the linker does stack munging when calling from
475dnl split-stack into non-split-stack code. We check this by looking
476dnl at the --help output. FIXME: This is only half right: it's
477dnl possible for the linker to support this for some targets but not
478dnl others.
Ian Lance Taylorc33c18c2015-09-15 17:05:14 +0000479dnl This is slightly different from the above check, which is whether
480dnl the linker permits the call at all.
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000481AC_CACHE_CHECK([whether linker supports split stack],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000482[libgo_cv_c_linker_supports_split_stack],
Ian Lance Taylorf56c5dd2014-01-22 19:10:47 +0000483[libgo_cv_c_linker_supports_split_stack=no
484if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000485 libgo_cv_c_linker_supports_split_stack=yes
Ian Lance Taylorf56c5dd2014-01-22 19:10:47 +0000486fi])
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000487if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000488 AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
489 [Define if the linker support split stack adjustments])
490fi
491
Ian Lance Taylor4c46b5f2014-11-14 18:02:50 +0000492AC_CACHE_CHECK([whether compiler is llgo],
493[libgo_cv_c_goc_is_llgo],
494[libgo_cv_c_goc_is_llgo=no
495if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then
496 libgo_cv_c_goc_is_llgo=yes
497fi])
498AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes)
499
Ian Lance Taylor505b4392010-12-08 02:08:59 +0000500dnl Test for the -lm library.
501MATH_LIBS=
502AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
503AC_SUBST(MATH_LIBS)
504
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000505dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac.
506AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
507 [libgo_cv_lib_sockets=
508 libgo_check_both=no
509 AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
510 if test "$libgo_check_socket" = "yes"; then
511 unset ac_cv_func_connect
512 AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
513 libgo_check_both=yes)
514 fi
515 if test "$libgo_check_both" = "yes"; then
516 libgo_old_libs=$LIBS
517 LIBS="$LIBS -lsocket -lnsl"
518 unset ac_cv_func_accept
519 AC_CHECK_FUNC(accept,
520 [libgo_check_nsl=no
521 libgo_cv_lib_sockets="-lsocket -lnsl"])
522 unset ac_cv_func_accept
523 LIBS=$libgo_old_libs
524 fi
525 unset ac_cv_func_gethostbyname
526 libgo_old_libs="$LIBS"
527 AC_CHECK_FUNC(gethostbyname, ,
528 [AC_CHECK_LIB(nsl, main,
529 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
530 unset ac_cv_func_gethostbyname
Ian Lance Taylor88cf4de2015-11-10 21:38:30 +0000531 AC_CHECK_FUNC(sendfile, ,
532 [AC_CHECK_LIB(sendfile, main,
533 [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lsendfile"])])
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000534 LIBS=$libgo_old_libs
535])
536NET_LIBS="$libgo_cv_lib_sockets"
537AC_SUBST(NET_LIBS)
538
Ian Lance Taylor6c94a9f2010-12-03 21:27:06 +0000539dnl Test whether the compiler supports the -pthread option.
540AC_CACHE_CHECK([whether -pthread is supported],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000541[libgo_cv_lib_pthread],
Ian Lance Taylor6c94a9f2010-12-03 21:27:06 +0000542[CFLAGS_hold=$CFLAGS
543CFLAGS="$CFLAGS -pthread"
544AC_COMPILE_IFELSE([[int i;]],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000545[libgo_cv_lib_pthread=yes],
546[libgo_cv_lib_pthread=no])
Ian Lance Taylor6c94a9f2010-12-03 21:27:06 +0000547CFLAGS=$CFLAGS_hold])
548PTHREAD_CFLAGS=
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000549if test "$libgo_cv_lib_pthread" = yes; then
Ian Lance Taylor6c94a9f2010-12-03 21:27:06 +0000550 PTHREAD_CFLAGS=-pthread
551fi
552AC_SUBST(PTHREAD_CFLAGS)
553
554dnl Test for the -lpthread library.
555PTHREAD_LIBS=
556AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
557AC_SUBST(PTHREAD_LIBS)
558
Ian Lance Taylorbbbe8b32015-11-21 01:27:44 +0000559dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime.
Ian Lance Taylored4ebab2011-01-14 19:18:38 +0000560AC_SEARCH_LIBS([sched_yield], [rt])
Ian Lance Taylorae135902013-02-11 19:03:04 +0000561AC_SEARCH_LIBS([nanosleep], [rt])
Ian Lance Taylorbbbe8b32015-11-21 01:27:44 +0000562AC_SEARCH_LIBS([clock_gettime], [rt])
Ian Lance Taylored4ebab2011-01-14 19:18:38 +0000563
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000564AC_C_BIGENDIAN
565
566GCC_CHECK_UNWIND_GETIPINFO
567
Ian Lance Taylor812ba632016-10-18 14:38:29 +0000568AC_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/reboot.h netinet/icmp6.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h)
Ian Lance Tayloradb04012011-09-16 15:47:21 +0000569
Ian Lance Taylor1410c222012-04-21 18:49:58 +0000570AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [],
Ian Lance Tayloradb04012011-09-16 15:47:21 +0000571[#ifdef HAVE_SYS_SOCKET_H
572#include <sys/socket.h>
573#endif
574])
575
Ian Lance Taylor2aeaf0f2012-03-02 21:07:52 +0000576AC_CACHE_CHECK([whether <ustat.h> can be used],
577[libgo_cv_c_ustat_h],
Ian Lance Taylordbe1e4a2012-03-05 06:04:14 +0000578[CFLAGS_hold=$CFLAGS
579CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE $OSCFLAGS"
Ian Lance Taylor2aeaf0f2012-03-02 21:07:52 +0000580AC_COMPILE_IFELSE(
581[AC_LANG_SOURCE([
582#include <sys/types.h>
583#ifdef HAVE_LINUX_FILTER_H
584#include <linux/filter.h>
585#endif
586#include <ustat.h>
Ian Lance Taylordbe1e4a2012-03-05 06:04:14 +0000587])], [libgo_cv_c_ustat_h=yes], [libgo_cv_c_ustat_h=no])
588CFLAGS=$CFLAGS_hold])
Ian Lance Taylor2aeaf0f2012-03-02 21:07:52 +0000589if test $libgo_cv_c_ustat_h = yes; then
590 AC_DEFINE(HAVE_USTAT_H, 1,
591 [Define to 1 if you have the <ustat.h> header file and it works.])
592fi
593
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000594AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
Ian Lance Taylor8955c802011-03-30 22:34:55 +0000595
Ian Lance Taylorf8d9fa92015-01-15 00:27:56 +0000596AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr)
Ian Lance Taylor8955c802011-03-30 22:34:55 +0000597AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes)
Ian Lance Taylor0b3189e2011-03-30 23:05:04 +0000598AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes)
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000599
Ian Lance Taylor6b05fad2013-11-24 02:38:28 +0000600AC_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 tee unlinkat unshare utimensat)
Ian Lance Taylor5d46bf02012-02-18 01:22:02 +0000601AC_TYPE_OFF_T
Ian Lance Taylore02ed812012-01-26 20:24:01 +0000602AC_CHECK_TYPES([loff_t])
603
Ian Lance Taylor324612b2012-04-27 16:38:11 +0000604LIBS_hold="$LIBS"
605LIBS="$LIBS -lm"
606AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl)
607LIBS="$LIBS_hold"
608
Ian Lance Taylor08ee9452011-11-29 21:58:48 +0000609CFLAGS_hold="$CFLAGS"
610CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
611LIBS_hold="$LIBS"
612LIBS="$LIBS $PTHREAD_LIBS"
613AC_CHECK_FUNCS(sem_timedwait)
614CFLAGS="$CFLAGS_hold"
615LIBS="$LIBS_hold"
616
Ian Lance Taylord2b480b2012-02-08 22:35:30 +0000617LIBS_hold="$LIBS"
618LIBS="$LIBS $MATH_LIBS"
619AC_CHECK_FUNCS(matherr)
620LIBS="$LIBS_hold"
621
Ian Lance Taylora7c48c82011-02-01 21:23:07 +0000622AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4],
623[libgo_cv_func___sync_bool_compare_and_swap_4],
624[AC_LINK_IFELSE([
625typedef unsigned int uint32 __attribute__ ((mode (SI)));
626uint32 i;
627int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
628],
629[libgo_cv_func___sync_bool_compare_and_swap_4=yes],
630[libgo_cv_func___sync_bool_compare_and_swap_4=no])])
631if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then
632 AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1,
633 [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32])
634fi
635
Ian Lance Taylor12e3c392012-02-12 06:23:08 +0000636AC_CACHE_CHECK([for __sync_bool_compare_and_swap_8],
637[libgo_cv_func___sync_bool_compare_and_swap_8],
638[AC_LINK_IFELSE([
639typedef unsigned int uint64 __attribute__ ((mode (DI)));
640uint64 i;
641int main() { return __sync_bool_compare_and_swap (&i, 0, 1); }
642],
643[libgo_cv_func___sync_bool_compare_and_swap_8=yes],
644[libgo_cv_func___sync_bool_compare_and_swap_8=no])])
645if test "$libgo_cv_func___sync_bool_compare_and_swap_8" = "yes"; then
646 AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8, 1,
647 [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint64])
648fi
649
Ian Lance Taylor084996f2011-02-04 00:49:47 +0000650AC_CACHE_CHECK([for __sync_fetch_and_add_4],
651[libgo_cv_func___sync_fetch_and_add_4],
652[AC_LINK_IFELSE([
653typedef unsigned int uint32 __attribute__ ((mode (SI)));
654uint32 i;
655int main() { return __sync_fetch_and_add (&i, 1); }
656],
657[libgo_cv_func___sync_fetch_and_add_4=yes],
658[libgo_cv_func___sync_fetch_and_add_4=no])])
659if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then
660 AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1,
661 [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32])
662fi
663
Ian Lance Taylor12e3c392012-02-12 06:23:08 +0000664AC_CACHE_CHECK([for __sync_add_and_fetch_8],
665[libgo_cv_func___sync_add_and_fetch_8],
666[AC_LINK_IFELSE([
667typedef unsigned int uint64 __attribute__ ((mode (DI)));
668uint64 i;
669int main() { return __sync_add_and_fetch (&i, 1); }
670],
671[libgo_cv_func___sync_add_and_fetch_8=yes],
672[libgo_cv_func___sync_add_and_fetch_8=no])])
673if test "$libgo_cv_func___sync_add_and_fetch_8" = "yes"; then
674 AC_DEFINE(HAVE_SYNC_ADD_AND_FETCH_8, 1,
675 [Define to 1 if the compiler provides the __sync_add_and_fetch function for uint64])
676fi
677
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000678dnl For x86 we want to use the -minline-all-stringops option to avoid
679dnl forcing a stack split when calling memcpy and friends.
680AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000681[libgo_cv_c_stringops],
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000682[CFLAGS_hold=$CFLAGS
683CFLAGS="$CFLAGS -minline-all-stringops"
684AC_COMPILE_IFELSE([int i;],
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000685[libgo_cv_c_stringops=yes],
686[libgo_cv_c_stringops=no])
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000687CFLAGS=$CFLAGS_hold])
688STRINGOPS_FLAG=
Ian Lance Taylorf2ee78b2011-01-12 06:34:08 +0000689if test "$libgo_cv_c_stringops" = yes; then
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000690 STRINGOPS_FLAG=-minline-all-stringops
691fi
692AC_SUBST(STRINGOPS_FLAG)
693
Ian Lance Taylor9d465fa2012-02-08 19:38:17 +0000694dnl For x86 we want to compile the math library with -mfancy-math-387
695dnl -funsafe-math-optimizations so that we can use the builtin
696dnl instructions directly.
697AC_CACHE_CHECK([whether compiler supports -mfancy-math-387],
698[libgo_cv_c_fancymath],
699[CFLAGS_hold=$CFLAGS
700CFLAGS="$CFLAGS -mfancy-math-387"
701AC_COMPILE_IFELSE([int i;],
702[libgo_cv_c_fancymath=yes],
703[libgo_cv_c_fancymath=no])
704CFLAGS=$CFLAGS_hold])
705MATH_FLAG=
706if test "$libgo_cv_c_fancymath" = yes; then
707 MATH_FLAG="-mfancy-math-387 -funsafe-math-optimizations"
Ian Lance Taylor33a91452014-03-12 04:38:52 +0000708else
709 MATH_FLAG="-ffp-contract=off"
Ian Lance Taylor9d465fa2012-02-08 19:38:17 +0000710fi
711AC_SUBST(MATH_FLAG)
712
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000713CFLAGS_hold=$CFLAGS
714CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
Ian Lance Taylore02ed812012-01-26 20:24:01 +0000715AC_CHECK_TYPES([off64_t])
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000716CFLAGS=$CFLAGS_hold
717
Ian Lance Taylor207c35f2011-11-01 04:12:01 +0000718dnl Work out the size of the epoll_events struct on GNU/Linux.
719AC_CACHE_CHECK([epoll_event size],
720[libgo_cv_c_epoll_event_size],
721[AC_COMPUTE_INT(libgo_cv_c_epoll_event_size,
722[sizeof (struct epoll_event)],
723[#include <sys/epoll.h>],
724[libgo_cv_c_epoll_event_size=0])])
725SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size}
726AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT)
727
728dnl Work out the offset of the fd field in the epoll_events struct on
729dnl GNU/Linux.
730AC_CACHE_CHECK([epoll_event data.fd offset],
731[libgo_cv_c_epoll_event_fd_offset],
732[AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset,
733[offsetof (struct epoll_event, data.fd)],
734[#include <stddef.h>
735#include <sys/epoll.h>],
736[libgo_cv_c_epoll_event_fd_offset=0])])
737STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset}
738AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET)
739
Ian Lance Taylor476013d2015-09-10 21:17:00 +0000740dnl Check if <sys/stat.h> uses timespec_t for st_?tim members. Introduced
741dnl in Solaris 12 for XPG7 compatibility.
742AC_EGREP_HEADER([timespec_t.*st_atim], [sys/stat.h],
743 [have_stat_timespec=yes], [have_stat_timespec=no])
744AM_CONDITIONAL(HAVE_STAT_TIMESPEC, test $have_stat_timespec = yes)
745
Ian Lance Taylord2b480b2012-02-08 22:35:30 +0000746dnl See if struct exception is defined in <math.h>.
747AC_CHECK_TYPE([struct exception],
748[libgo_has_struct_exception=yes],
749[libgo_has_struct_exception=no],
750[#include <math.h>])
751if test "$libgo_has_struct_exception" = "yes"; then
752 AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1,
753 [Define to 1 if <math.h> defines struct exception])
754fi
755
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000756dnl See whether setcontext changes the value of TLS variables.
757AC_CACHE_CHECK([whether setcontext clobbers TLS variables],
758[libgo_cv_lib_setcontext_clobbers_tls],
Ian Lance Taylore6c58172012-02-10 14:07:44 +0000759[CFLAGS_hold="$CFLAGS"
760CFLAGS="$PTHREAD_CFLAGS"
761LIBS_hold="$LIBS"
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000762LIBS="$LIBS $PTHREAD_LIBS"
Ian Lance Taylore6c58172012-02-10 14:07:44 +0000763AC_CHECK_SIZEOF([void *])
764AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8])
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000765AC_RUN_IFELSE(
766 [AC_LANG_SOURCE([
767#include <pthread.h>
768#include <stdlib.h>
769#include <ucontext.h>
770#include <unistd.h>
771
772__thread int tls;
773
774static char stack[[10 * 1024 * 1024]];
775static ucontext_t c;
776
777/* Called via makecontext/setcontext. */
778
779static void
780cfn (void)
781{
782 exit (tls);
783}
784
785/* Called via pthread_create. */
786
787static void *
788tfn (void *dummy)
789{
790 /* The thread should still see this value after calling
791 setcontext. */
792 tls = 0;
793
794 setcontext (&c);
795
796 /* The call to setcontext should not return. */
797 abort ();
798}
799
800int
801main ()
802{
803 pthread_t tid;
804
805 /* The thread should not see this value. */
806 tls = 1;
807
808 if (getcontext (&c) < 0)
809 abort ();
810
811 c.uc_stack.ss_sp = stack;
Ian Lance Taylorca59d212012-02-15 22:29:35 +0000812#ifdef MAKECONTEXT_STACK_TOP
813 c.uc_stack.ss_sp += sizeof stack;
814#endif
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000815 c.uc_stack.ss_flags = 0;
816 c.uc_stack.ss_size = sizeof stack;
817 c.uc_link = NULL;
818 makecontext (&c, cfn, 0);
819
820 if (pthread_create (&tid, NULL, tfn, NULL) != 0)
821 abort ();
822
823 if (pthread_join (tid, NULL) != 0)
824 abort ();
825
826 /* The thread should have called exit. */
827 abort ();
828}
829])],
830[libgo_cv_lib_setcontext_clobbers_tls=no],
831[libgo_cv_lib_setcontext_clobbers_tls=yes],
Ian Lance Taylore6c58172012-02-10 14:07:44 +0000832[case "$target:$ptr_type_size" in
833 i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64)
834 libgo_cv_lib_setcontext_clobbers_tls=yes ;;
835 *)
836 libgo_cv_lib_setcontext_clobbers_tls=no ;;
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000837 esac
838])
Ian Lance Taylore6c58172012-02-10 14:07:44 +0000839CFLAGS="$CFLAGS_hold"
Ian Lance Taylor7f578432012-02-08 05:30:12 +0000840LIBS="$LIBS_hold"
841])
842if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then
843 AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1,
844 [Define if setcontext clobbers TLS variables])
845fi
846
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000847AC_CACHE_CHECK([whether .eh_frame section should be read-only],
848libgo_cv_ro_eh_frame, [
849libgo_cv_ro_eh_frame=no
850echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
851if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
852 if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
853 libgo_cv_ro_eh_frame=yes
854 elif grep '.section.*eh_frame.*#alloc' conftest.c \
855 | grep -v '#write' > /dev/null; then
856 libgo_cv_ro_eh_frame=yes
857 fi
858fi
859rm -f conftest.*
860])
861if test "x$libgo_cv_ro_eh_frame" = xyes; then
862 AC_DEFINE(EH_FRAME_FLAGS, "a",
863 [Define to the flags needed for the .section .eh_frame directive.])
864else
865 AC_DEFINE(EH_FRAME_FLAGS, "aw",
866 [Define to the flags needed for the .section .eh_frame directive.])
867fi
868
Ian Lance Taylora8192312014-09-29 23:37:27 +0000869AC_CACHE_CHECK([if compiler supports -Qunused-arguments],
870[libgo_cv_c_unused_arguments],
871[CFLAGS_hold=$CFLAGS
872CFLAGS="$CFLAGS -Qunused-arguments"
873AC_COMPILE_IFELSE([[int i;]],
874[libgo_cv_c_unused_arguments=yes],
875[libgo_cv_c_unused_arguments=no])
876CFLAGS=$CFLAGS_hold])
877
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000878AC_CACHE_CHECK([if assembler supports GNU comdat group syntax],
879libgo_cv_as_comdat_gnu, [
880echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s
Ian Lance Taylora8192312014-09-29 23:37:27 +0000881CFLAGS_hold=$CFLAGS
882if test "$libgo_cv_c_unused_arguments" = yes; then
883 CFLAGS="$CFLAGS -Qunused-arguments"
884fi
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000885if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
886 libgo_cv_as_comdat_gnu=yes
887else
888 libgo_cv_as_comdat_gnu=no
889fi
Ian Lance Taylora8192312014-09-29 23:37:27 +0000890CFLAGS=$CFLAGS_hold
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000891])
892if test "x$libgo_cv_as_comdat_gnu" = xyes; then
893 AC_DEFINE(HAVE_AS_COMDAT_GAS, 1,
894 [Define if your assembler supports GNU comdat group syntax.])
895fi
896
897AC_CACHE_CHECK([assembler supports pc related relocs],
898libgo_cv_as_x86_pcrel, [
899libgo_cv_as_x86_pcrel=yes
900echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
Ian Lance Taylora8192312014-09-29 23:37:27 +0000901CFLAGS_hold=$CFLAGS
902if test "$libgo_cv_c_unused_arguments" = yes; then
903 CFLAGS="$CFLAGS -Qunused-arguments"
904fi
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000905if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then
906 libgo_cv_as_x86_pcrel=no
907fi
Ian Lance Taylora8192312014-09-29 23:37:27 +0000908CFLAGS=$CFLAGS_hold
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000909])
910if test "x$libgo_cv_as_x86_pcrel" = xyes; then
911 AC_DEFINE(HAVE_AS_X86_PCREL, 1,
912 [Define if your assembler supports PC relative relocs.])
913fi
914
915AC_CACHE_CHECK([assembler supports unwind section type],
916libgo_cv_as_x86_64_unwind_section_type, [
917libgo_cv_as_x86_64_unwind_section_type=yes
918echo '.section .eh_frame,"a",@unwind' > conftest.s
Ian Lance Taylora8192312014-09-29 23:37:27 +0000919CFLAGS_hold=$CFLAGS
920if test "$libgo_cv_c_unused_arguments" = yes; then
921 CFLAGS="$CFLAGS -Qunused-arguments"
922fi
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000923if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
924 libgo_cv_as_x86_64_unwind_section_type=no
925fi
Ian Lance Taylora8192312014-09-29 23:37:27 +0000926CFLAGS=$CFLAGS_hold
Ian Lance Taylorcc1a9ac2013-10-02 17:30:07 +0000927])
928if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then
929 AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1,
930 [Define if your assembler supports unwind section type.])
931fi
932
Ian Lance Taylor7a938932010-12-03 04:34:57 +0000933AC_CACHE_SAVE
934
935if test ${multilib} = yes; then
936 multilib_arg="--enable-multilib"
937else
938 multilib_arg=
939fi
940
941AC_CONFIG_FILES(Makefile testsuite/Makefile)
942
943AC_CONFIG_COMMANDS([default],
944[if test -n "$CONFIG_FILES"; then
945 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
946 # that multilib installs will end up installed in the correct place.
947 # The testsuite needs it for multilib-aware ABI baseline files.
948 # To work around this not being passed down from config-ml.in ->
949 # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
950 # append it here. Only modify Makefiles that have just been created.
951 #
952 # Also, get rid of this simulated-VPATH thing that automake does.
953 cat > vpsed << \_EOF
954s!`test -f '$<' || echo '$(srcdir)/'`!!
955_EOF
956 for i in $SUBDIRS; do
957 case $CONFIG_FILES in
958 *${i}/Makefile*)
959 #echo "Adding MULTISUBDIR to $i/Makefile"
960 sed -f vpsed $i/Makefile > tmp
961 grep '^MULTISUBDIR =' Makefile >> tmp
962 mv tmp $i/Makefile
963 ;;
964 esac
965 done
966 rm vpsed
967 fi
968],
969[
970# Variables needed in config.status (file generation) which aren't already
971# passed by autoconf.
972SUBDIRS="$SUBDIRS"
973])
974
975AC_OUTPUT