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7a938933 ILT |
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_PREREQ(2.64) | |
10 | AC_INIT(package-unused, version-unused,, libgo) | |
11 | AC_CONFIG_SRCDIR(Makefile.am) | |
12 | AC_CONFIG_HEADER(config.h) | |
13 | ||
90fe3cc6 | 14 | libtool_VERSION=6:0:0 |
7a938933 ILT |
15 | AC_SUBST(libtool_VERSION) |
16 | ||
17 | AM_ENABLE_MULTILIB(, ..) | |
18 | ||
19 | AC_CANONICAL_SYSTEM | |
20 | target_alias=${target_alias-$host_alias} | |
21 | ||
ee6440f8 | 22 | AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dist -Wall -Wno-portability]) |
7a938933 ILT |
23 | AH_TEMPLATE(PACKAGE, [Name of package]) |
24 | AH_TEMPLATE(VERSION, [Version number of package]) | |
25 | ||
26 | m4_rename([_AC_ARG_VAR_PRECIOUS],[glibgo_PRECIOUS]) | |
27 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
28 | AC_PROG_CC | |
29 | AC_PROG_GO | |
30 | m4_rename_force([glibgo_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) | |
31 | ||
32 | AC_SUBST(CFLAGS) | |
33 | ||
34 | AM_MAINTAINER_MODE | |
35 | ||
36 | AC_PROG_LD | |
37 | AC_PROG_RANLIB | |
38 | AC_CHECK_TOOL(OBJCOPY, objcopy, missing-objcopy) | |
39 | ||
40 | AC_LIBTOOL_DLOPEN | |
41 | AM_PROG_LIBTOOL | |
42 | AC_SUBST(enable_shared) | |
43 | AC_SUBST(enable_static) | |
44 | ||
d983a802 ILT |
45 | CC_FOR_BUILD=${CC_FOR_BUILD:-gcc} |
46 | AC_SUBST(CC_FOR_BUILD) | |
47 | ||
de27caac ILT |
48 | AC_PROG_AWK |
49 | ||
7a938933 ILT |
50 | WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' |
51 | AC_SUBST(WARN_FLAGS) | |
52 | ||
0d4668c1 ILT |
53 | AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], |
54 | [turns on -Werror @<:@default=yes@:>@])]) | |
55 | if test "x$enable_werror" != "xno"; then | |
56 | WERROR="-Werror" | |
57 | fi | |
7a938933 ILT |
58 | AC_SUBST(WERROR) |
59 | ||
60 | glibgo_toolexecdir=no | |
61 | glibgo_toolexeclibdir=no | |
7a938933 ILT |
62 | |
63 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) | |
64 | AC_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 "$enableval" in | |
68 | yes) version_specific_libs=yes ;; | |
69 | no) version_specific_libs=no ;; | |
70 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
71 | esac], | |
72 | [version_specific_libs=no]) | |
73 | AC_MSG_RESULT($version_specific_libs) | |
74 | ||
75 | # Version-specific runtime libs processing. | |
76 | if test $version_specific_libs = yes; then | |
77 | glibgo_toolexecdir='${libdir}/gcc/${host_alias}' | |
78 | glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' | |
79 | fi | |
80 | ||
81 | # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir | |
82 | # Install a library built with a cross compiler in tooldir, not libdir. | |
317ea7c0 ILT |
83 | if 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='${toolexecdir}/lib' | |
87 | else | |
88 | nover_glibgo_toolexecdir='${libdir}/gcc/${host_alias}' | |
89 | nover_glibgo_toolexeclibdir='${libdir}' | |
90 | fi | |
6c76a95d | 91 | multi_os_directory=`$GOC -print-multi-os-directory` |
317ea7c0 ILT |
92 | case $multi_os_directory in |
93 | .) ;; # Avoid trailing /. | |
94 | *) nover_glibgo_toolexeclibdir=${nover_glibgo_toolexeclibdir}/${multi_os_directory} ;; | |
95 | esac | |
96 | ||
7a938933 | 97 | if test x"$glibgo_toolexecdir" = x"no"; then |
317ea7c0 ILT |
98 | glibgo_toolexecdir="${nover_glibgo_toolexecdir}" |
99 | glibgo_toolexeclibdir="${nover_glibgo_toolexeclibdir}" | |
7a938933 ILT |
100 | fi |
101 | ||
7a938933 ILT |
102 | AC_SUBST(glibgo_toolexecdir) |
103 | AC_SUBST(glibgo_toolexeclibdir) | |
317ea7c0 | 104 | AC_SUBST(nover_glibgo_toolexeclibdir) |
7a938933 ILT |
105 | |
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. | |
109 | AC_ARG_WITH(libffi, | |
110 | AS_HELP_STRING([--without-libffi], | |
111 | [don't use libffi]), | |
112 | [:], | |
113 | [with_libffi=${with_libffi_default-yes}]) | |
114 | ||
115 | LIBFFI= | |
116 | LIBFFIINCS= | |
117 | if test "$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$(top_srcdir)/../libffi/include -I../libffi/include' | |
121 | fi | |
122 | AC_SUBST(LIBFFI) | |
123 | AC_SUBST(LIBFFIINCS) | |
124 | ||
9a85ed03 ILT |
125 | # See if the user wants to configure without libatomic. This is useful if we are |
126 | # on an architecture for which libgo does not need an atomic support library and | |
127 | # libatomic does not support our C compiler. | |
128 | AC_ARG_WITH(libatomic, | |
129 | AS_HELP_STRING([--without-libatomic], | |
130 | [don't use libatomic]), | |
131 | [:], | |
132 | [with_libatomic=${with_libatomic_default-yes}]) | |
133 | ||
134 | LIBATOMIC= | |
135 | if test "$with_libatomic" != no; then | |
136 | LIBATOMIC=../libatomic/libatomic_convenience.la | |
137 | fi | |
138 | AC_SUBST(LIBATOMIC) | |
139 | ||
18c70075 ILT |
140 | # Used to tell GNU make to include a file without telling automake to |
141 | # include it. | |
142 | go_include="-include" | |
143 | AC_SUBST(go_include) | |
144 | ||
7a938933 ILT |
145 | is_darwin=no |
146 | is_freebsd=no | |
654d2ec0 | 147 | is_irix=no |
7a938933 | 148 | is_linux=no |
1efa38d1 | 149 | is_netbsd=no |
4ccad563 | 150 | is_openbsd=no |
f038dae6 | 151 | is_dragonfly=no |
7a938933 | 152 | is_rtems=no |
f2ee78b8 | 153 | is_solaris=no |
c3b5b97b | 154 | GOOS=unknown |
7a938933 | 155 | case ${host} in |
f2ee78b8 ILT |
156 | *-*-darwin*) is_darwin=yes; GOOS=darwin ;; |
157 | *-*-freebsd*) is_freebsd=yes; GOOS=freebsd ;; | |
654d2ec0 | 158 | *-*-irix6*) is_irix=yes; GOOS=irix ;; |
f2ee78b8 | 159 | *-*-linux*) is_linux=yes; GOOS=linux ;; |
df4aa89a | 160 | *-*-netbsd*) is_netbsd=yes; GOOS=netbsd ;; |
4ccad563 | 161 | *-*-openbsd*) is_openbsd=yes; GOOS=openbsd ;; |
f038dae6 | 162 | *-*-dragonfly*) is_dragonfly=yes; GOOS=dragonfly ;; |
f2ee78b8 ILT |
163 | *-*-rtems*) is_rtems=yes; GOOS=rtems ;; |
164 | *-*-solaris2*) is_solaris=yes; GOOS=solaris ;; | |
7a938933 ILT |
165 | esac |
166 | AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes) | |
167 | AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes) | |
654d2ec0 | 168 | AM_CONDITIONAL(LIBGO_IS_IRIX, test $is_irix = yes) |
7a938933 | 169 | AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes) |
df4aa89a | 170 | AM_CONDITIONAL(LIBGO_IS_NETBSD, test $is_netbsd = yes) |
4ccad563 | 171 | AM_CONDITIONAL(LIBGO_IS_OPENBSD, test $is_openbsd = yes) |
824393bd | 172 | AM_CONDITIONAL(LIBGO_IS_DRAGONFLY, test $is_dragonfly = yes) |
7a938933 | 173 | AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes) |
f2ee78b8 | 174 | AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes) |
c3b5b97b | 175 | AC_SUBST(GOOS) |
7a938933 | 176 | |
7134cf28 ILT |
177 | dnl Test whether we need to use DejaGNU or whether we can use the |
178 | dnl simpler gotest approach. We can only use gotest for a native | |
179 | dnl build. | |
180 | USE_DEJAGNU=no | |
181 | case ${host} in | |
182 | *-*-rtems*) USE_DEJAGNU=yes ;; | |
553752e1 | 183 | ${build}) ;; |
7134cf28 ILT |
184 | *) USE_DEJAGNU=yes ;; |
185 | esac | |
186 | AC_SUBST(USE_DEJAGNU) | |
187 | ||
f2ee78b8 | 188 | dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch). |
7a938933 | 189 | is_386=no |
e59b9171 | 190 | is_alpha=no |
7a938933 | 191 | is_arm=no |
71d0d50a | 192 | is_arm64=no |
ca11cc98 | 193 | is_m68k=no |
9f3b1e6c | 194 | mips_abi=unknown |
ca11cc98 ILT |
195 | is_ppc=no |
196 | is_ppc64=no | |
f2ee78b8 | 197 | is_sparc=no |
545d1aa1 | 198 | is_sparc64=no |
f2ee78b8 | 199 | is_x86_64=no |
c3b5b97b | 200 | GOARCH=unknown |
7a938933 | 201 | case ${host} in |
e59b9171 ILT |
202 | alpha*-*-*) |
203 | is_alpha=yes | |
204 | GOARCH=alpha | |
205 | ;; | |
71d0d50a ILT |
206 | aarch64-*-*) |
207 | is_arm64=yes | |
208 | GOARCH=arm64 | |
209 | ;; | |
ca11cc98 ILT |
210 | arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) |
211 | is_arm=yes | |
212 | GOARCH=arm | |
213 | ;; | |
7a938933 | 214 | changequote(,)dnl |
c3b5b97b | 215 | i[34567]86-*-* | x86_64-*-*) |
7a938933 | 216 | changequote([,])dnl |
4a299bf4 | 217 | AC_COMPILE_IFELSE([ |
c3b5b97b ILT |
218 | #ifdef __x86_64__ |
219 | #error 64-bit | |
220 | #endif], | |
221 | [is_386=yes], [is_x86_64=yes]) | |
222 | if test "$is_386" = "yes"; then | |
223 | GOARCH=386 | |
7a938933 | 224 | else |
c3b5b97b | 225 | GOARCH=amd64 |
7a938933 ILT |
226 | fi |
227 | ;; | |
ca11cc98 ILT |
228 | m68k*-*-*) |
229 | is_m68k=yes | |
230 | GOARCH=m68k | |
231 | ;; | |
232 | mips*-*-*) | |
4a299bf4 | 233 | AC_COMPILE_IFELSE([ |
85a09210 ILT |
234 | #if _MIPS_SIM != _ABIO32 |
235 | #error not o32 | |
ca11cc98 | 236 | #endif], |
85a09210 ILT |
237 | [mips_abi="o32"], |
238 | [AC_COMPILE_IFELSE([ | |
239 | #if _MIPS_SIM != _ABIN32 | |
240 | #error not n32 | |
241 | #endif], | |
242 | [mips_abi="n32"], | |
243 | [AC_COMPILE_IFELSE([ | |
244 | #if _MIPS_SIM != _ABI64 | |
245 | #error not n64 | |
246 | #endif], | |
247 | [mips_abi="n64"], | |
248 | [AC_COMPILE_IFELSE([ | |
249 | #if _MIPS_SIM != _ABIO64 | |
250 | #error not o64 | |
251 | #endif], | |
252 | [mips_abi="o64"], | |
253 | [AC_MSG_ERROR([unknown MIPS ABI]) | |
254 | [mips_abi="n32"]])])])]) | |
255 | case "$mips_abi" in | |
256 | "o32") GOARCH=mipso32 ;; | |
257 | "n32") GOARCH=mipsn32 ;; | |
258 | "n64") GOARCH=mipsn64 ;; | |
259 | "o64") GOARCH=mipso64 ;; | |
260 | esac | |
ca11cc98 ILT |
261 | ;; |
262 | rs6000*-*-* | powerpc*-*-*) | |
4a299bf4 | 263 | AC_COMPILE_IFELSE([ |
ca11cc98 ILT |
264 | #ifdef _ARCH_PPC64 |
265 | #error 64-bit | |
266 | #endif], | |
267 | [is_ppc=yes], [is_ppc64=yes]) | |
268 | if test "$is_ppc" = "yes"; then | |
269 | GOARCH=ppc | |
270 | else | |
271 | GOARCH=ppc64 | |
272 | fi | |
7a938933 | 273 | ;; |
f2ee78b8 | 274 | sparc*-*-*) |
4a299bf4 | 275 | AC_COMPILE_IFELSE([ |
f2ee78b8 ILT |
276 | #if defined(__sparcv9) || defined(__arch64__) |
277 | #error 64-bit | |
278 | #endif], | |
545d1aa1 | 279 | [is_sparc=yes], [is_sparc64=yes]) |
f2ee78b8 | 280 | if test "$is_sparc" = "yes"; then |
f2ee78b8 ILT |
281 | GOARCH=sparc |
282 | else | |
545d1aa1 | 283 | GOARCH=sparc64 |
f2ee78b8 ILT |
284 | fi |
285 | ;; | |
7a938933 ILT |
286 | esac |
287 | AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes) | |
e59b9171 | 288 | AM_CONDITIONAL(LIBGO_IS_ALPHA, test $is_alpha = yes) |
7a938933 | 289 | AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes) |
71d0d50a | 290 | AM_CONDITIONAL(LIBGO_IS_ARM64, test $is_arm64 = yes) |
ca11cc98 | 291 | AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes) |
9f3b1e6c | 292 | AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != unknown) |
85a09210 ILT |
293 | AM_CONDITIONAL(LIBGO_IS_MIPSO32, test $mips_abi = o32) |
294 | AM_CONDITIONAL(LIBGO_IS_MIPSN32, test $mips_abi = n32) | |
295 | AM_CONDITIONAL(LIBGO_IS_MIPSN64, test $mips_abi = n64) | |
296 | AM_CONDITIONAL(LIBGO_IS_MIPSO64, test $mips_abi = o64) | |
ca11cc98 ILT |
297 | AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes) |
298 | AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes) | |
f2ee78b8 | 299 | AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes) |
545d1aa1 | 300 | AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes) |
f2ee78b8 | 301 | AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes) |
c3b5b97b | 302 | AC_SUBST(GOARCH) |
7a938933 | 303 | |
ca11cc98 | 304 | dnl Some files are only present when needed for specific architectures. |
de27caac ILT |
305 | GO_LIBCALL_OS_FILE= |
306 | GO_LIBCALL_OS_ARCH_FILE= | |
307 | GO_SYSCALL_OS_FILE= | |
308 | GO_SYSCALL_OS_ARCH_FILE= | |
309 | if test -f ${srcdir}/go/syscall/libcall_${GOOS}.go; then | |
310 | GO_LIBCALL_OS_FILE=go/syscall/libcall_${GOOS}.go | |
311 | fi | |
312 | if test -f ${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go; then | |
313 | GO_LIBCALL_OS_ARCH_FILE=go/syscall/libcall_${GOOS}_${GOARCH}.go | |
314 | fi | |
315 | if test -f ${srcdir}/go/syscall/syscall_${GOOS}.go; then | |
316 | GO_SYSCALL_OS_FILE=go/syscall/syscall_${GOOS}.go | |
317 | fi | |
318 | if test -f ${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go; then | |
319 | GO_SYSCALL_OS_ARCH_FILE=go/syscall/syscall_${GOOS}_${GOARCH}.go | |
ca11cc98 | 320 | fi |
de27caac ILT |
321 | AC_SUBST(GO_LIBCALL_OS_FILE) |
322 | AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) | |
323 | AC_SUBST(GO_SYSCALL_OS_FILE) | |
324 | AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) | |
ca11cc98 | 325 | |
d48be5df ILT |
326 | dnl Special flags used to generate sysinfo.go. |
327 | OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" | |
90630d19 | 328 | case "$target" in |
9f3b1e6c ILT |
329 | mips-sgi-irix6.5*) |
330 | # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct | |
331 | # msghdr in <sys/socket.h>. | |
d48be5df | 332 | OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" |
9f3b1e6c | 333 | ;; |
90630d19 ILT |
334 | *-*-solaris2.1[[01]]) |
335 | # Solaris 10+ needs this so struct msghdr gets the msg_control | |
bbe847a1 | 336 | # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as |
90630d19 | 337 | # above doesn't work with C99. |
bbe847a1 | 338 | OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" |
90630d19 ILT |
339 | ;; |
340 | esac | |
341 | AC_SUBST(OSCFLAGS) | |
342 | ||
7a938933 ILT |
343 | dnl Use -fsplit-stack when compiling C code if available. |
344 | AC_CACHE_CHECK([whether -fsplit-stack is supported], | |
f2ee78b8 | 345 | [libgo_cv_c_split_stack_supported], |
7a938933 ILT |
346 | [CFLAGS_hold=$CFLAGS |
347 | CFLAGS="$CFLAGS -fsplit-stack" | |
348 | AC_COMPILE_IFELSE([[int i;]], | |
f2ee78b8 ILT |
349 | [libgo_cv_c_split_stack_supported=yes], |
350 | [libgo_cv_c_split_stack_supported=no]) | |
7a938933 | 351 | CFLAGS=$CFLAGS_hold]) |
f2ee78b8 | 352 | if test "$libgo_cv_c_split_stack_supported" = yes; then |
7a938933 ILT |
353 | SPLIT_STACK=-fsplit-stack |
354 | AC_DEFINE(USING_SPLIT_STACK, 1, | |
355 | [Define if the compiler supports -fsplit-stack]) | |
356 | else | |
357 | SPLIT_STACK= | |
358 | fi | |
359 | AC_SUBST(SPLIT_STACK) | |
360 | AM_CONDITIONAL(USING_SPLIT_STACK, | |
f2ee78b8 | 361 | test "$libgo_cv_c_split_stack_supported" = yes) |
7a938933 ILT |
362 | |
363 | dnl Check whether the linker does stack munging when calling from | |
364 | dnl split-stack into non-split-stack code. We check this by looking | |
365 | dnl at the --help output. FIXME: This is only half right: it's | |
366 | dnl possible for the linker to support this for some targets but not | |
367 | dnl others. | |
368 | AC_CACHE_CHECK([whether linker supports split stack], | |
f2ee78b8 | 369 | [libgo_cv_c_linker_supports_split_stack], |
f56c5dd1 ILT |
370 | [libgo_cv_c_linker_supports_split_stack=no |
371 | if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then | |
f2ee78b8 | 372 | libgo_cv_c_linker_supports_split_stack=yes |
f56c5dd1 | 373 | fi]) |
f2ee78b8 | 374 | if test "$libgo_cv_c_linker_supports_split_stack" = yes; then |
7a938933 ILT |
375 | AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1, |
376 | [Define if the linker support split stack adjustments]) | |
377 | fi | |
378 | ||
505b439a ILT |
379 | dnl Test for the -lm library. |
380 | MATH_LIBS= | |
381 | AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm) | |
382 | AC_SUBST(MATH_LIBS) | |
383 | ||
f2ee78b8 ILT |
384 | dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac. |
385 | AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets, | |
386 | [libgo_cv_lib_sockets= | |
387 | libgo_check_both=no | |
388 | AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes) | |
389 | if test "$libgo_check_socket" = "yes"; then | |
390 | unset ac_cv_func_connect | |
391 | AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket", | |
392 | libgo_check_both=yes) | |
393 | fi | |
394 | if test "$libgo_check_both" = "yes"; then | |
395 | libgo_old_libs=$LIBS | |
396 | LIBS="$LIBS -lsocket -lnsl" | |
397 | unset ac_cv_func_accept | |
398 | AC_CHECK_FUNC(accept, | |
399 | [libgo_check_nsl=no | |
400 | libgo_cv_lib_sockets="-lsocket -lnsl"]) | |
401 | unset ac_cv_func_accept | |
402 | LIBS=$libgo_old_libs | |
403 | fi | |
404 | unset ac_cv_func_gethostbyname | |
405 | libgo_old_libs="$LIBS" | |
406 | AC_CHECK_FUNC(gethostbyname, , | |
407 | [AC_CHECK_LIB(nsl, main, | |
408 | [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])]) | |
409 | unset ac_cv_func_gethostbyname | |
410 | LIBS=$libgo_old_libs | |
411 | ]) | |
412 | NET_LIBS="$libgo_cv_lib_sockets" | |
413 | AC_SUBST(NET_LIBS) | |
414 | ||
6c94a9fa ILT |
415 | dnl Test whether the compiler supports the -pthread option. |
416 | AC_CACHE_CHECK([whether -pthread is supported], | |
f2ee78b8 | 417 | [libgo_cv_lib_pthread], |
6c94a9fa ILT |
418 | [CFLAGS_hold=$CFLAGS |
419 | CFLAGS="$CFLAGS -pthread" | |
420 | AC_COMPILE_IFELSE([[int i;]], | |
f2ee78b8 ILT |
421 | [libgo_cv_lib_pthread=yes], |
422 | [libgo_cv_lib_pthread=no]) | |
6c94a9fa ILT |
423 | CFLAGS=$CFLAGS_hold]) |
424 | PTHREAD_CFLAGS= | |
f2ee78b8 | 425 | if test "$libgo_cv_lib_pthread" = yes; then |
6c94a9fa ILT |
426 | PTHREAD_CFLAGS=-pthread |
427 | fi | |
428 | AC_SUBST(PTHREAD_CFLAGS) | |
429 | ||
430 | dnl Test for the -lpthread library. | |
431 | PTHREAD_LIBS= | |
432 | AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) | |
433 | AC_SUBST(PTHREAD_LIBS) | |
434 | ||
ae135907 | 435 | dnl Test if -lrt is required for sched_yield and/or nanosleep. |
ed4ebabc | 436 | AC_SEARCH_LIBS([sched_yield], [rt]) |
ae135907 | 437 | AC_SEARCH_LIBS([nanosleep], [rt]) |
ed4ebabc | 438 | |
7a938933 ILT |
439 | AC_C_BIGENDIAN |
440 | ||
441 | GCC_CHECK_UNWIND_GETIPINFO | |
442 | ||
0c521d18 ILT |
443 | AC_ARG_ENABLE(sjlj-exceptions, |
444 | AC_HELP_STRING([--enable-sjlj-exceptions], | |
445 | [force use of builtin_setjmp for exceptions]), | |
446 | [case "$enableval" in | |
447 | yes|no|auto) ;; | |
448 | *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;; | |
449 | esac], | |
450 | [enable_sjlj_exceptions=auto]) | |
451 | ||
452 | AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions], | |
453 | [libgo_cv_lib_sjlj_exceptions], | |
454 | [AC_LANG_CONFTEST( | |
455 | [AC_LANG_SOURCE([ | |
456 | void bar (); | |
457 | void clean (int *); | |
458 | void foo () | |
459 | { | |
460 | int i __attribute__ ((cleanup (clean))); | |
461 | bar(); | |
462 | } | |
463 | ])]) | |
464 | CFLAGS_hold=$CFLAGS | |
465 | CFLAGS="--save-temps -fexceptions" | |
466 | libgo_cv_lib_sjlj_exceptions=unknown | |
467 | AS_IF([ac_fn_c_try_compile], | |
468 | [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then | |
469 | libgo_cv_lib_sjlj_exceptions=yes | |
470 | elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then | |
471 | libgo_cv_lib_sjlj_exceptions=no | |
472 | fi]) | |
473 | CFLAGS=$CFLAGS_hold | |
474 | rm -f conftest* | |
475 | ]) | |
476 | ||
477 | if test "$enable_sjlj_exceptions" = "auto"; then | |
478 | enable_sjlj_exceptions=$libgo_cv_lib_sjlj_exceptions | |
479 | fi | |
480 | ||
481 | case $enable_sjlj_exceptions in | |
482 | yes) | |
483 | AC_DEFINE(LIBGO_SJLJ_EXCEPTIONS, 1, | |
484 | [Define if the C++ compiler is configured for setjmp/longjmp exceptions.]) | |
485 | ;; | |
486 | no) | |
487 | ;; | |
488 | *) | |
489 | AC_MSG_ERROR([unable to detect exception model]) | |
490 | ;; | |
491 | esac | |
492 | ||
d3b4df0b | 493 | AC_CHECK_HEADERS(sched.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/reboot.h netinet/icmp6.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h) |
adb0401d | 494 | |
1410c222 | 495 | AC_CHECK_HEADERS([linux/filter.h linux/if_addr.h linux/if_ether.h linux/if_tun.h linux/netlink.h linux/rtnetlink.h], [], [], |
adb0401d ILT |
496 | [#ifdef HAVE_SYS_SOCKET_H |
497 | #include <sys/socket.h> | |
498 | #endif | |
499 | ]) | |
500 | ||
2aeaf0fb ILT |
501 | AC_CACHE_CHECK([whether <ustat.h> can be used], |
502 | [libgo_cv_c_ustat_h], | |
dbe1e4a5 ILT |
503 | [CFLAGS_hold=$CFLAGS |
504 | CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE $OSCFLAGS" | |
2aeaf0fb ILT |
505 | AC_COMPILE_IFELSE( |
506 | [AC_LANG_SOURCE([ | |
507 | #include <sys/types.h> | |
508 | #ifdef HAVE_LINUX_FILTER_H | |
509 | #include <linux/filter.h> | |
510 | #endif | |
511 | #include <ustat.h> | |
dbe1e4a5 ILT |
512 | ])], [libgo_cv_c_ustat_h=yes], [libgo_cv_c_ustat_h=no]) |
513 | CFLAGS=$CFLAGS_hold]) | |
2aeaf0fb ILT |
514 | if test $libgo_cv_c_ustat_h = yes; then |
515 | AC_DEFINE(HAVE_USTAT_H, 1, | |
516 | [Define to 1 if you have the <ustat.h> header file and it works.]) | |
517 | fi | |
518 | ||
7a938933 | 519 | AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes) |
8955c80a | 520 | |
0d7afaa7 | 521 | AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv dl_iterate_phdr) |
8955c80a | 522 | AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes) |
0b3189e7 | 523 | AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes) |
7a938933 | 524 | |
6b05fadd | 525 | 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 tee unlinkat unshare utimensat) |
5d46bf05 | 526 | AC_TYPE_OFF_T |
e02ed81e ILT |
527 | AC_CHECK_TYPES([loff_t]) |
528 | ||
324612b3 ILT |
529 | LIBS_hold="$LIBS" |
530 | LIBS="$LIBS -lm" | |
531 | AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl) | |
532 | LIBS="$LIBS_hold" | |
533 | ||
08ee945e ILT |
534 | CFLAGS_hold="$CFLAGS" |
535 | CFLAGS="$CFLAGS $PTHREAD_CFLAGS" | |
536 | LIBS_hold="$LIBS" | |
537 | LIBS="$LIBS $PTHREAD_LIBS" | |
538 | AC_CHECK_FUNCS(sem_timedwait) | |
539 | CFLAGS="$CFLAGS_hold" | |
540 | LIBS="$LIBS_hold" | |
541 | ||
d2b480bc ILT |
542 | LIBS_hold="$LIBS" |
543 | LIBS="$LIBS $MATH_LIBS" | |
544 | AC_CHECK_FUNCS(matherr) | |
545 | LIBS="$LIBS_hold" | |
546 | ||
a7c48c8e ILT |
547 | AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4], |
548 | [libgo_cv_func___sync_bool_compare_and_swap_4], | |
549 | [AC_LINK_IFELSE([ | |
550 | typedef unsigned int uint32 __attribute__ ((mode (SI))); | |
551 | uint32 i; | |
552 | int main() { return __sync_bool_compare_and_swap (&i, 0, 1); } | |
553 | ], | |
554 | [libgo_cv_func___sync_bool_compare_and_swap_4=yes], | |
555 | [libgo_cv_func___sync_bool_compare_and_swap_4=no])]) | |
556 | if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then | |
557 | AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1, | |
558 | [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32]) | |
559 | fi | |
560 | ||
12e3c396 ILT |
561 | AC_CACHE_CHECK([for __sync_bool_compare_and_swap_8], |
562 | [libgo_cv_func___sync_bool_compare_and_swap_8], | |
563 | [AC_LINK_IFELSE([ | |
564 | typedef unsigned int uint64 __attribute__ ((mode (DI))); | |
565 | uint64 i; | |
566 | int main() { return __sync_bool_compare_and_swap (&i, 0, 1); } | |
567 | ], | |
568 | [libgo_cv_func___sync_bool_compare_and_swap_8=yes], | |
569 | [libgo_cv_func___sync_bool_compare_and_swap_8=no])]) | |
570 | if test "$libgo_cv_func___sync_bool_compare_and_swap_8" = "yes"; then | |
571 | AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8, 1, | |
572 | [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint64]) | |
573 | fi | |
574 | ||
084996f1 ILT |
575 | AC_CACHE_CHECK([for __sync_fetch_and_add_4], |
576 | [libgo_cv_func___sync_fetch_and_add_4], | |
577 | [AC_LINK_IFELSE([ | |
578 | typedef unsigned int uint32 __attribute__ ((mode (SI))); | |
579 | uint32 i; | |
580 | int main() { return __sync_fetch_and_add (&i, 1); } | |
581 | ], | |
582 | [libgo_cv_func___sync_fetch_and_add_4=yes], | |
583 | [libgo_cv_func___sync_fetch_and_add_4=no])]) | |
584 | if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then | |
585 | AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1, | |
586 | [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32]) | |
587 | fi | |
588 | ||
12e3c396 ILT |
589 | AC_CACHE_CHECK([for __sync_add_and_fetch_8], |
590 | [libgo_cv_func___sync_add_and_fetch_8], | |
591 | [AC_LINK_IFELSE([ | |
592 | typedef unsigned int uint64 __attribute__ ((mode (DI))); | |
593 | uint64 i; | |
594 | int main() { return __sync_add_and_fetch (&i, 1); } | |
595 | ], | |
596 | [libgo_cv_func___sync_add_and_fetch_8=yes], | |
597 | [libgo_cv_func___sync_add_and_fetch_8=no])]) | |
598 | if test "$libgo_cv_func___sync_add_and_fetch_8" = "yes"; then | |
599 | AC_DEFINE(HAVE_SYNC_ADD_AND_FETCH_8, 1, | |
600 | [Define to 1 if the compiler provides the __sync_add_and_fetch function for uint64]) | |
601 | fi | |
602 | ||
7a938933 ILT |
603 | dnl For x86 we want to use the -minline-all-stringops option to avoid |
604 | dnl forcing a stack split when calling memcpy and friends. | |
605 | AC_CACHE_CHECK([whether compiler supports -minline-all-stringops], | |
f2ee78b8 | 606 | [libgo_cv_c_stringops], |
7a938933 ILT |
607 | [CFLAGS_hold=$CFLAGS |
608 | CFLAGS="$CFLAGS -minline-all-stringops" | |
609 | AC_COMPILE_IFELSE([int i;], | |
f2ee78b8 ILT |
610 | [libgo_cv_c_stringops=yes], |
611 | [libgo_cv_c_stringops=no]) | |
7a938933 ILT |
612 | CFLAGS=$CFLAGS_hold]) |
613 | STRINGOPS_FLAG= | |
f2ee78b8 | 614 | if test "$libgo_cv_c_stringops" = yes; then |
7a938933 ILT |
615 | STRINGOPS_FLAG=-minline-all-stringops |
616 | fi | |
617 | AC_SUBST(STRINGOPS_FLAG) | |
618 | ||
9d465faf ILT |
619 | dnl For x86 we want to compile the math library with -mfancy-math-387 |
620 | dnl -funsafe-math-optimizations so that we can use the builtin | |
621 | dnl instructions directly. | |
622 | AC_CACHE_CHECK([whether compiler supports -mfancy-math-387], | |
623 | [libgo_cv_c_fancymath], | |
624 | [CFLAGS_hold=$CFLAGS | |
625 | CFLAGS="$CFLAGS -mfancy-math-387" | |
626 | AC_COMPILE_IFELSE([int i;], | |
627 | [libgo_cv_c_fancymath=yes], | |
628 | [libgo_cv_c_fancymath=no]) | |
629 | CFLAGS=$CFLAGS_hold]) | |
630 | MATH_FLAG= | |
631 | if test "$libgo_cv_c_fancymath" = yes; then | |
632 | MATH_FLAG="-mfancy-math-387 -funsafe-math-optimizations" | |
33a9145b ILT |
633 | else |
634 | MATH_FLAG="-ffp-contract=off" | |
9d465faf ILT |
635 | fi |
636 | AC_SUBST(MATH_FLAG) | |
637 | ||
7a938933 ILT |
638 | CFLAGS_hold=$CFLAGS |
639 | CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE" | |
e02ed81e | 640 | AC_CHECK_TYPES([off64_t]) |
7a938933 ILT |
641 | CFLAGS=$CFLAGS_hold |
642 | ||
207c35fa ILT |
643 | dnl Work out the size of the epoll_events struct on GNU/Linux. |
644 | AC_CACHE_CHECK([epoll_event size], | |
645 | [libgo_cv_c_epoll_event_size], | |
646 | [AC_COMPUTE_INT(libgo_cv_c_epoll_event_size, | |
647 | [sizeof (struct epoll_event)], | |
648 | [#include <sys/epoll.h>], | |
649 | [libgo_cv_c_epoll_event_size=0])]) | |
650 | SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size} | |
651 | AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT) | |
652 | ||
653 | dnl Work out the offset of the fd field in the epoll_events struct on | |
654 | dnl GNU/Linux. | |
655 | AC_CACHE_CHECK([epoll_event data.fd offset], | |
656 | [libgo_cv_c_epoll_event_fd_offset], | |
657 | [AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset, | |
658 | [offsetof (struct epoll_event, data.fd)], | |
659 | [#include <stddef.h> | |
660 | #include <sys/epoll.h>], | |
661 | [libgo_cv_c_epoll_event_fd_offset=0])]) | |
662 | STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset} | |
663 | AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET) | |
664 | ||
d2b480bc ILT |
665 | dnl See if struct exception is defined in <math.h>. |
666 | AC_CHECK_TYPE([struct exception], | |
667 | [libgo_has_struct_exception=yes], | |
668 | [libgo_has_struct_exception=no], | |
669 | [#include <math.h>]) | |
670 | if test "$libgo_has_struct_exception" = "yes"; then | |
671 | AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1, | |
672 | [Define to 1 if <math.h> defines struct exception]) | |
673 | fi | |
674 | ||
7f57843f ILT |
675 | dnl See whether setcontext changes the value of TLS variables. |
676 | AC_CACHE_CHECK([whether setcontext clobbers TLS variables], | |
677 | [libgo_cv_lib_setcontext_clobbers_tls], | |
e6c5817d ILT |
678 | [CFLAGS_hold="$CFLAGS" |
679 | CFLAGS="$PTHREAD_CFLAGS" | |
680 | LIBS_hold="$LIBS" | |
7f57843f | 681 | LIBS="$LIBS $PTHREAD_LIBS" |
e6c5817d ILT |
682 | AC_CHECK_SIZEOF([void *]) |
683 | AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8]) | |
7f57843f ILT |
684 | AC_RUN_IFELSE( |
685 | [AC_LANG_SOURCE([ | |
686 | #include <pthread.h> | |
687 | #include <stdlib.h> | |
688 | #include <ucontext.h> | |
689 | #include <unistd.h> | |
690 | ||
691 | __thread int tls; | |
692 | ||
693 | static char stack[[10 * 1024 * 1024]]; | |
694 | static ucontext_t c; | |
695 | ||
696 | /* Called via makecontext/setcontext. */ | |
697 | ||
698 | static void | |
699 | cfn (void) | |
700 | { | |
701 | exit (tls); | |
702 | } | |
703 | ||
704 | /* Called via pthread_create. */ | |
705 | ||
706 | static void * | |
707 | tfn (void *dummy) | |
708 | { | |
709 | /* The thread should still see this value after calling | |
710 | setcontext. */ | |
711 | tls = 0; | |
712 | ||
713 | setcontext (&c); | |
714 | ||
715 | /* The call to setcontext should not return. */ | |
716 | abort (); | |
717 | } | |
718 | ||
719 | int | |
720 | main () | |
721 | { | |
722 | pthread_t tid; | |
723 | ||
724 | /* The thread should not see this value. */ | |
725 | tls = 1; | |
726 | ||
727 | if (getcontext (&c) < 0) | |
728 | abort (); | |
729 | ||
730 | c.uc_stack.ss_sp = stack; | |
ca59d219 ILT |
731 | #ifdef MAKECONTEXT_STACK_TOP |
732 | c.uc_stack.ss_sp += sizeof stack; | |
733 | #endif | |
7f57843f ILT |
734 | c.uc_stack.ss_flags = 0; |
735 | c.uc_stack.ss_size = sizeof stack; | |
736 | c.uc_link = NULL; | |
737 | makecontext (&c, cfn, 0); | |
738 | ||
739 | if (pthread_create (&tid, NULL, tfn, NULL) != 0) | |
740 | abort (); | |
741 | ||
742 | if (pthread_join (tid, NULL) != 0) | |
743 | abort (); | |
744 | ||
745 | /* The thread should have called exit. */ | |
746 | abort (); | |
747 | } | |
748 | ])], | |
749 | [libgo_cv_lib_setcontext_clobbers_tls=no], | |
750 | [libgo_cv_lib_setcontext_clobbers_tls=yes], | |
e6c5817d ILT |
751 | [case "$target:$ptr_type_size" in |
752 | i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64) | |
753 | libgo_cv_lib_setcontext_clobbers_tls=yes ;; | |
754 | *) | |
755 | libgo_cv_lib_setcontext_clobbers_tls=no ;; | |
7f57843f ILT |
756 | esac |
757 | ]) | |
e6c5817d | 758 | CFLAGS="$CFLAGS_hold" |
7f57843f ILT |
759 | LIBS="$LIBS_hold" |
760 | ]) | |
761 | if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then | |
762 | AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1, | |
763 | [Define if setcontext clobbers TLS variables]) | |
764 | fi | |
765 | ||
cc1a9ac8 ILT |
766 | AC_CACHE_CHECK([whether .eh_frame section should be read-only], |
767 | libgo_cv_ro_eh_frame, [ | |
768 | libgo_cv_ro_eh_frame=no | |
769 | echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c | |
770 | if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then | |
771 | if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then | |
772 | libgo_cv_ro_eh_frame=yes | |
773 | elif grep '.section.*eh_frame.*#alloc' conftest.c \ | |
774 | | grep -v '#write' > /dev/null; then | |
775 | libgo_cv_ro_eh_frame=yes | |
776 | fi | |
777 | fi | |
778 | rm -f conftest.* | |
779 | ]) | |
780 | if test "x$libgo_cv_ro_eh_frame" = xyes; then | |
781 | AC_DEFINE(EH_FRAME_FLAGS, "a", | |
782 | [Define to the flags needed for the .section .eh_frame directive.]) | |
783 | else | |
784 | AC_DEFINE(EH_FRAME_FLAGS, "aw", | |
785 | [Define to the flags needed for the .section .eh_frame directive.]) | |
786 | fi | |
787 | ||
a819231d ILT |
788 | AC_CACHE_CHECK([if compiler supports -Qunused-arguments], |
789 | [libgo_cv_c_unused_arguments], | |
790 | [CFLAGS_hold=$CFLAGS | |
791 | CFLAGS="$CFLAGS -Qunused-arguments" | |
792 | AC_COMPILE_IFELSE([[int i;]], | |
793 | [libgo_cv_c_unused_arguments=yes], | |
794 | [libgo_cv_c_unused_arguments=no]) | |
795 | CFLAGS=$CFLAGS_hold]) | |
796 | ||
cc1a9ac8 ILT |
797 | AC_CACHE_CHECK([if assembler supports GNU comdat group syntax], |
798 | libgo_cv_as_comdat_gnu, [ | |
799 | echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s | |
a819231d ILT |
800 | CFLAGS_hold=$CFLAGS |
801 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
802 | CFLAGS="$CFLAGS -Qunused-arguments" | |
803 | fi | |
cc1a9ac8 ILT |
804 | if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then |
805 | libgo_cv_as_comdat_gnu=yes | |
806 | else | |
807 | libgo_cv_as_comdat_gnu=no | |
808 | fi | |
a819231d | 809 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
810 | ]) |
811 | if test "x$libgo_cv_as_comdat_gnu" = xyes; then | |
812 | AC_DEFINE(HAVE_AS_COMDAT_GAS, 1, | |
813 | [Define if your assembler supports GNU comdat group syntax.]) | |
814 | fi | |
815 | ||
816 | AC_CACHE_CHECK([assembler supports pc related relocs], | |
817 | libgo_cv_as_x86_pcrel, [ | |
818 | libgo_cv_as_x86_pcrel=yes | |
819 | echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s | |
a819231d ILT |
820 | CFLAGS_hold=$CFLAGS |
821 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
822 | CFLAGS="$CFLAGS -Qunused-arguments" | |
823 | fi | |
cc1a9ac8 ILT |
824 | if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then |
825 | libgo_cv_as_x86_pcrel=no | |
826 | fi | |
a819231d | 827 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
828 | ]) |
829 | if test "x$libgo_cv_as_x86_pcrel" = xyes; then | |
830 | AC_DEFINE(HAVE_AS_X86_PCREL, 1, | |
831 | [Define if your assembler supports PC relative relocs.]) | |
832 | fi | |
833 | ||
834 | AC_CACHE_CHECK([assembler supports unwind section type], | |
835 | libgo_cv_as_x86_64_unwind_section_type, [ | |
836 | libgo_cv_as_x86_64_unwind_section_type=yes | |
837 | echo '.section .eh_frame,"a",@unwind' > conftest.s | |
a819231d ILT |
838 | CFLAGS_hold=$CFLAGS |
839 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
840 | CFLAGS="$CFLAGS -Qunused-arguments" | |
841 | fi | |
cc1a9ac8 ILT |
842 | if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then |
843 | libgo_cv_as_x86_64_unwind_section_type=no | |
844 | fi | |
a819231d | 845 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
846 | ]) |
847 | if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then | |
848 | AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, | |
849 | [Define if your assembler supports unwind section type.]) | |
850 | fi | |
851 | ||
7a938933 ILT |
852 | AC_CACHE_SAVE |
853 | ||
854 | if test ${multilib} = yes; then | |
855 | multilib_arg="--enable-multilib" | |
856 | else | |
857 | multilib_arg= | |
858 | fi | |
859 | ||
860 | AC_CONFIG_FILES(Makefile testsuite/Makefile) | |
861 | ||
862 | AC_CONFIG_COMMANDS([default], | |
863 | [if test -n "$CONFIG_FILES"; then | |
864 | # Multilibs need MULTISUBDIR defined correctly in certain makefiles so | |
865 | # that multilib installs will end up installed in the correct place. | |
866 | # The testsuite needs it for multilib-aware ABI baseline files. | |
867 | # To work around this not being passed down from config-ml.in -> | |
868 | # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually | |
869 | # append it here. Only modify Makefiles that have just been created. | |
870 | # | |
871 | # Also, get rid of this simulated-VPATH thing that automake does. | |
872 | cat > vpsed << \_EOF | |
873 | s!`test -f '$<' || echo '$(srcdir)/'`!! | |
874 | _EOF | |
875 | for i in $SUBDIRS; do | |
876 | case $CONFIG_FILES in | |
877 | *${i}/Makefile*) | |
878 | #echo "Adding MULTISUBDIR to $i/Makefile" | |
879 | sed -f vpsed $i/Makefile > tmp | |
880 | grep '^MULTISUBDIR =' Makefile >> tmp | |
881 | mv tmp $i/Makefile | |
882 | ;; | |
883 | esac | |
884 | done | |
885 | rm vpsed | |
886 | fi | |
887 | ], | |
888 | [ | |
889 | # Variables needed in config.status (file generation) which aren't already | |
890 | # passed by autoconf. | |
891 | SUBDIRS="$SUBDIRS" | |
892 | ]) | |
893 | ||
894 | AC_OUTPUT |