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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 | ||
c5fe5e80 | 14 | libtool_VERSION=10:0:0 |
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) |
22b955cc | 175 | 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) |
c3b5b97b | 176 | AC_SUBST(GOOS) |
7a938933 | 177 | |
7134cf28 ILT |
178 | dnl Test whether we need to use DejaGNU or whether we can use the |
179 | dnl simpler gotest approach. We can only use gotest for a native | |
180 | dnl build. | |
181 | USE_DEJAGNU=no | |
182 | case ${host} in | |
183 | *-*-rtems*) USE_DEJAGNU=yes ;; | |
553752e1 | 184 | ${build}) ;; |
7134cf28 ILT |
185 | *) USE_DEJAGNU=yes ;; |
186 | esac | |
187 | AC_SUBST(USE_DEJAGNU) | |
188 | ||
f2ee78b8 | 189 | dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch). |
7a938933 | 190 | is_386=no |
e59b9171 | 191 | is_alpha=no |
7a938933 | 192 | is_arm=no |
71d0d50a | 193 | is_arm64=no |
ca11cc98 | 194 | is_m68k=no |
9f3b1e6c | 195 | mips_abi=unknown |
ca11cc98 ILT |
196 | is_ppc=no |
197 | is_ppc64=no | |
6f7ccafa | 198 | is_ppc64le=no |
1fec5f52 ILT |
199 | is_s390=no |
200 | is_s390x=no | |
f2ee78b8 | 201 | is_sparc=no |
545d1aa1 | 202 | is_sparc64=no |
f2ee78b8 | 203 | is_x86_64=no |
c3b5b97b | 204 | GOARCH=unknown |
7a938933 | 205 | case ${host} in |
e59b9171 ILT |
206 | alpha*-*-*) |
207 | is_alpha=yes | |
208 | GOARCH=alpha | |
209 | ;; | |
71d0d50a ILT |
210 | aarch64-*-*) |
211 | is_arm64=yes | |
212 | GOARCH=arm64 | |
213 | ;; | |
ca11cc98 ILT |
214 | arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*) |
215 | is_arm=yes | |
216 | GOARCH=arm | |
217 | ;; | |
7a938933 | 218 | changequote(,)dnl |
c3b5b97b | 219 | i[34567]86-*-* | x86_64-*-*) |
7a938933 | 220 | changequote([,])dnl |
4a299bf4 | 221 | AC_COMPILE_IFELSE([ |
c3b5b97b ILT |
222 | #ifdef __x86_64__ |
223 | #error 64-bit | |
224 | #endif], | |
225 | [is_386=yes], [is_x86_64=yes]) | |
226 | if test "$is_386" = "yes"; then | |
227 | GOARCH=386 | |
7a938933 | 228 | else |
c3b5b97b | 229 | GOARCH=amd64 |
7a938933 ILT |
230 | fi |
231 | ;; | |
ca11cc98 ILT |
232 | m68k*-*-*) |
233 | is_m68k=yes | |
234 | GOARCH=m68k | |
235 | ;; | |
236 | mips*-*-*) | |
4a299bf4 | 237 | AC_COMPILE_IFELSE([ |
85a09210 ILT |
238 | #if _MIPS_SIM != _ABIO32 |
239 | #error not o32 | |
ca11cc98 | 240 | #endif], |
85a09210 ILT |
241 | [mips_abi="o32"], |
242 | [AC_COMPILE_IFELSE([ | |
243 | #if _MIPS_SIM != _ABIN32 | |
244 | #error not n32 | |
245 | #endif], | |
246 | [mips_abi="n32"], | |
247 | [AC_COMPILE_IFELSE([ | |
248 | #if _MIPS_SIM != _ABI64 | |
249 | #error not n64 | |
250 | #endif], | |
251 | [mips_abi="n64"], | |
252 | [AC_COMPILE_IFELSE([ | |
253 | #if _MIPS_SIM != _ABIO64 | |
254 | #error not o64 | |
255 | #endif], | |
256 | [mips_abi="o64"], | |
257 | [AC_MSG_ERROR([unknown MIPS ABI]) | |
258 | [mips_abi="n32"]])])])]) | |
259 | case "$mips_abi" in | |
260 | "o32") GOARCH=mipso32 ;; | |
261 | "n32") GOARCH=mipsn32 ;; | |
262 | "n64") GOARCH=mipsn64 ;; | |
263 | "o64") GOARCH=mipso64 ;; | |
264 | esac | |
ca11cc98 ILT |
265 | ;; |
266 | rs6000*-*-* | powerpc*-*-*) | |
4a299bf4 | 267 | AC_COMPILE_IFELSE([ |
ca11cc98 ILT |
268 | #ifdef _ARCH_PPC64 |
269 | #error 64-bit | |
270 | #endif], | |
6f7ccafa ILT |
271 | [is_ppc=yes], |
272 | [AC_COMPILE_IFELSE([ | |
273 | #if defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__) | |
274 | #error 64be | |
275 | #endif], | |
276 | [is_ppc64le=yes],[is_ppc64=yes])]) | |
ca11cc98 ILT |
277 | if test "$is_ppc" = "yes"; then |
278 | GOARCH=ppc | |
6f7ccafa | 279 | elif test "$is_ppc64" = "yes"; then |
ca11cc98 | 280 | GOARCH=ppc64 |
6f7ccafa ILT |
281 | else |
282 | GOARCH=ppc64le | |
ca11cc98 | 283 | fi |
7a938933 | 284 | ;; |
1fec5f52 ILT |
285 | s390*-*-*) |
286 | AC_COMPILE_IFELSE([ | |
287 | #if defined(__s390x__) | |
288 | #error 64-bit | |
289 | #endif], | |
290 | [is_s390=yes], [is_s390x=yes]) | |
291 | if test "$is_s390" = "yes"; then | |
292 | GOARCH=s390 | |
293 | else | |
294 | GOARCH=s390x | |
295 | fi | |
296 | ;; | |
f2ee78b8 | 297 | sparc*-*-*) |
4a299bf4 | 298 | AC_COMPILE_IFELSE([ |
f2ee78b8 ILT |
299 | #if defined(__sparcv9) || defined(__arch64__) |
300 | #error 64-bit | |
301 | #endif], | |
545d1aa1 | 302 | [is_sparc=yes], [is_sparc64=yes]) |
f2ee78b8 | 303 | if test "$is_sparc" = "yes"; then |
f2ee78b8 ILT |
304 | GOARCH=sparc |
305 | else | |
545d1aa1 | 306 | GOARCH=sparc64 |
f2ee78b8 ILT |
307 | fi |
308 | ;; | |
7a938933 ILT |
309 | esac |
310 | AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes) | |
e59b9171 | 311 | AM_CONDITIONAL(LIBGO_IS_ALPHA, test $is_alpha = yes) |
7a938933 | 312 | AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes) |
71d0d50a | 313 | AM_CONDITIONAL(LIBGO_IS_ARM64, test $is_arm64 = yes) |
ca11cc98 | 314 | AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes) |
9f3b1e6c | 315 | AM_CONDITIONAL(LIBGO_IS_MIPS, test $mips_abi != unknown) |
85a09210 ILT |
316 | AM_CONDITIONAL(LIBGO_IS_MIPSO32, test $mips_abi = o32) |
317 | AM_CONDITIONAL(LIBGO_IS_MIPSN32, test $mips_abi = n32) | |
318 | AM_CONDITIONAL(LIBGO_IS_MIPSN64, test $mips_abi = n64) | |
319 | AM_CONDITIONAL(LIBGO_IS_MIPSO64, test $mips_abi = o64) | |
f98dd1a3 | 320 | AM_CONDITIONAL(LIBGO_IS_MIPS64, test $mips_abi = n64 -o $mips_abi = o64) |
ca11cc98 ILT |
321 | AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes) |
322 | AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes) | |
6f7ccafa | 323 | AM_CONDITIONAL(LIBGO_IS_PPC64LE, test $is_ppc64le = yes) |
1fec5f52 ILT |
324 | AM_CONDITIONAL(LIBGO_IS_S390, test $is_s390 = yes) |
325 | AM_CONDITIONAL(LIBGO_IS_S390X, test $is_s390x = yes) | |
f2ee78b8 | 326 | AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes) |
545d1aa1 | 327 | AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes) |
f2ee78b8 | 328 | AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes) |
c3b5b97b | 329 | AC_SUBST(GOARCH) |
7a938933 | 330 | |
ca11cc98 | 331 | dnl Some files are only present when needed for specific architectures. |
de27caac ILT |
332 | GO_LIBCALL_OS_FILE= |
333 | GO_LIBCALL_OS_ARCH_FILE= | |
334 | GO_SYSCALL_OS_FILE= | |
335 | GO_SYSCALL_OS_ARCH_FILE= | |
204b9fc2 ILT |
336 | if test -f "${srcdir}/go/syscall/libcall_${GOOS}.go"; then |
337 | GO_LIBCALL_OS_FILE="go/syscall/libcall_${GOOS}.go" | |
de27caac | 338 | fi |
204b9fc2 ILT |
339 | if test -f "${srcdir}/go/syscall/libcall_${GOOS}_${GOARCH}.go"; then |
340 | GO_LIBCALL_OS_ARCH_FILE="go/syscall/libcall_${GOOS}_${GOARCH}.go" | |
de27caac | 341 | fi |
204b9fc2 ILT |
342 | if test -f "${srcdir}/go/syscall/syscall_${GOOS}.go"; then |
343 | GO_SYSCALL_OS_FILE="go/syscall/syscall_${GOOS}.go" | |
de27caac | 344 | fi |
204b9fc2 ILT |
345 | if test -f "${srcdir}/go/syscall/syscall_${GOOS}_${GOARCH}.go"; then |
346 | GO_SYSCALL_OS_ARCH_FILE="go/syscall/syscall_${GOOS}_${GOARCH}.go" | |
ca11cc98 | 347 | fi |
de27caac ILT |
348 | AC_SUBST(GO_LIBCALL_OS_FILE) |
349 | AC_SUBST(GO_LIBCALL_OS_ARCH_FILE) | |
350 | AC_SUBST(GO_SYSCALL_OS_FILE) | |
351 | AC_SUBST(GO_SYSCALL_OS_ARCH_FILE) | |
ca11cc98 | 352 | |
d48be5df ILT |
353 | dnl Special flags used to generate sysinfo.go. |
354 | OSCFLAGS="-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" | |
90630d19 | 355 | case "$target" in |
9f3b1e6c ILT |
356 | mips-sgi-irix6.5*) |
357 | # IRIX 6 needs _XOPEN_SOURCE=500 for the XPG5 version of struct | |
358 | # msghdr in <sys/socket.h>. | |
d48be5df | 359 | OSCFLAGS="$OSCFLAGS -D_XOPEN_SOURCE=500" |
9f3b1e6c | 360 | ;; |
90630d19 ILT |
361 | *-*-solaris2.1[[01]]) |
362 | # Solaris 10+ needs this so struct msghdr gets the msg_control | |
bbe847a1 | 363 | # etc. fields in <sys/socket.h> (_XPG4_2). _XOPEN_SOURCE=600 as |
90630d19 | 364 | # above doesn't work with C99. |
bbe847a1 | 365 | OSCFLAGS="$OSCFLAGS -std=gnu99 -D_XOPEN_SOURCE=600 -D__EXTENSIONS__" |
90630d19 ILT |
366 | ;; |
367 | esac | |
368 | AC_SUBST(OSCFLAGS) | |
369 | ||
7a938933 ILT |
370 | dnl Use -fsplit-stack when compiling C code if available. |
371 | AC_CACHE_CHECK([whether -fsplit-stack is supported], | |
f2ee78b8 | 372 | [libgo_cv_c_split_stack_supported], |
7a938933 ILT |
373 | [CFLAGS_hold=$CFLAGS |
374 | CFLAGS="$CFLAGS -fsplit-stack" | |
375 | AC_COMPILE_IFELSE([[int i;]], | |
f2ee78b8 ILT |
376 | [libgo_cv_c_split_stack_supported=yes], |
377 | [libgo_cv_c_split_stack_supported=no]) | |
7a938933 | 378 | CFLAGS=$CFLAGS_hold]) |
c33c18cd ILT |
379 | |
380 | dnl Make sure the linker permits -fsplit-stack. Old versions of gold will | |
381 | dnl reject split-stack code calling non-split-stack code on targets | |
382 | dnl they don't support. | |
383 | AC_CACHE_CHECK([whether linker supports split/non-split linked together], | |
384 | [libgo_cv_c_linker_split_non_split], | |
385 | [cat > conftest1.c << EOF | |
386 | extern void f(); | |
387 | int main() { f(); return 0; } | |
388 | EOF | |
389 | cat > conftest2.c << EOF | |
390 | void f() {} | |
391 | EOF | |
392 | $CC -c -fsplit-stack $CFLAGS $CPPFLAGS conftest1.c | |
393 | $CC -c $CFLAGS $CPPFLAGS conftest2.c | |
394 | if $CC -o conftest conftest1.$ac_objext conftest2.$ac_objext; then | |
395 | libgo_cv_c_linker_split_non_split=yes | |
396 | else | |
397 | libgo_cv_c_linker_split_non_split=no | |
398 | fi | |
399 | rm -f conftest1.* conftest2.* conftest]) | |
400 | ||
401 | if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes; then | |
7a938933 ILT |
402 | SPLIT_STACK=-fsplit-stack |
403 | AC_DEFINE(USING_SPLIT_STACK, 1, | |
404 | [Define if the compiler supports -fsplit-stack]) | |
405 | else | |
406 | SPLIT_STACK= | |
407 | fi | |
408 | AC_SUBST(SPLIT_STACK) | |
409 | AM_CONDITIONAL(USING_SPLIT_STACK, | |
c33c18cd | 410 | test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = yes) |
7a938933 | 411 | |
a2bf11d1 ILT |
412 | dnl If the compiler supports split-stack but the linker does not, then |
413 | dnl we need to explicitly disable split-stack for Go. | |
414 | if test "$libgo_cv_c_split_stack_supported" = yes -a "$libgo_cv_c_linker_split_non_split" = no; then | |
415 | GO_SPLIT_STACK=-fno-split-stack | |
416 | else | |
417 | GO_SPLIT_STACK= | |
418 | fi | |
419 | AC_SUBST(GO_SPLIT_STACK) | |
420 | ||
7a938933 ILT |
421 | dnl Check whether the linker does stack munging when calling from |
422 | dnl split-stack into non-split-stack code. We check this by looking | |
423 | dnl at the --help output. FIXME: This is only half right: it's | |
424 | dnl possible for the linker to support this for some targets but not | |
425 | dnl others. | |
c33c18cd ILT |
426 | dnl This is slightly different from the above check, which is whether |
427 | dnl the linker permits the call at all. | |
7a938933 | 428 | AC_CACHE_CHECK([whether linker supports split stack], |
f2ee78b8 | 429 | [libgo_cv_c_linker_supports_split_stack], |
f56c5dd1 ILT |
430 | [libgo_cv_c_linker_supports_split_stack=no |
431 | if $GOC -Wl,--help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then | |
f2ee78b8 | 432 | libgo_cv_c_linker_supports_split_stack=yes |
f56c5dd1 | 433 | fi]) |
f2ee78b8 | 434 | if test "$libgo_cv_c_linker_supports_split_stack" = yes; then |
7a938933 ILT |
435 | AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1, |
436 | [Define if the linker support split stack adjustments]) | |
437 | fi | |
438 | ||
4c46b5f0 ILT |
439 | AC_CACHE_CHECK([whether compiler is llgo], |
440 | [libgo_cv_c_goc_is_llgo], | |
441 | [libgo_cv_c_goc_is_llgo=no | |
442 | if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then | |
443 | libgo_cv_c_goc_is_llgo=yes | |
444 | fi]) | |
445 | AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes) | |
446 | ||
505b439a ILT |
447 | dnl Test for the -lm library. |
448 | MATH_LIBS= | |
449 | AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm) | |
450 | AC_SUBST(MATH_LIBS) | |
451 | ||
f2ee78b8 ILT |
452 | dnl Test for -lsocket and -lnsl. Copied from libjava/configure.ac. |
453 | AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets, | |
454 | [libgo_cv_lib_sockets= | |
455 | libgo_check_both=no | |
456 | AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes) | |
457 | if test "$libgo_check_socket" = "yes"; then | |
458 | unset ac_cv_func_connect | |
459 | AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket", | |
460 | libgo_check_both=yes) | |
461 | fi | |
462 | if test "$libgo_check_both" = "yes"; then | |
463 | libgo_old_libs=$LIBS | |
464 | LIBS="$LIBS -lsocket -lnsl" | |
465 | unset ac_cv_func_accept | |
466 | AC_CHECK_FUNC(accept, | |
467 | [libgo_check_nsl=no | |
468 | libgo_cv_lib_sockets="-lsocket -lnsl"]) | |
469 | unset ac_cv_func_accept | |
470 | LIBS=$libgo_old_libs | |
471 | fi | |
472 | unset ac_cv_func_gethostbyname | |
473 | libgo_old_libs="$LIBS" | |
474 | AC_CHECK_FUNC(gethostbyname, , | |
475 | [AC_CHECK_LIB(nsl, main, | |
476 | [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])]) | |
477 | unset ac_cv_func_gethostbyname | |
88cf4de8 ILT |
478 | AC_CHECK_FUNC(sendfile, , |
479 | [AC_CHECK_LIB(sendfile, main, | |
480 | [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lsendfile"])]) | |
f2ee78b8 ILT |
481 | LIBS=$libgo_old_libs |
482 | ]) | |
483 | NET_LIBS="$libgo_cv_lib_sockets" | |
484 | AC_SUBST(NET_LIBS) | |
485 | ||
6c94a9fa ILT |
486 | dnl Test whether the compiler supports the -pthread option. |
487 | AC_CACHE_CHECK([whether -pthread is supported], | |
f2ee78b8 | 488 | [libgo_cv_lib_pthread], |
6c94a9fa ILT |
489 | [CFLAGS_hold=$CFLAGS |
490 | CFLAGS="$CFLAGS -pthread" | |
491 | AC_COMPILE_IFELSE([[int i;]], | |
f2ee78b8 ILT |
492 | [libgo_cv_lib_pthread=yes], |
493 | [libgo_cv_lib_pthread=no]) | |
6c94a9fa ILT |
494 | CFLAGS=$CFLAGS_hold]) |
495 | PTHREAD_CFLAGS= | |
f2ee78b8 | 496 | if test "$libgo_cv_lib_pthread" = yes; then |
6c94a9fa ILT |
497 | PTHREAD_CFLAGS=-pthread |
498 | fi | |
499 | AC_SUBST(PTHREAD_CFLAGS) | |
500 | ||
501 | dnl Test for the -lpthread library. | |
502 | PTHREAD_LIBS= | |
503 | AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread) | |
504 | AC_SUBST(PTHREAD_LIBS) | |
505 | ||
bbbe8b33 | 506 | dnl Test if -lrt is required for sched_yield or nanosleep or clock_gettime. |
ed4ebabc | 507 | AC_SEARCH_LIBS([sched_yield], [rt]) |
ae135907 | 508 | AC_SEARCH_LIBS([nanosleep], [rt]) |
bbbe8b33 | 509 | AC_SEARCH_LIBS([clock_gettime], [rt]) |
ed4ebabc | 510 | |
7a938933 ILT |
511 | AC_C_BIGENDIAN |
512 | ||
513 | GCC_CHECK_UNWIND_GETIPINFO | |
514 | ||
d3b4df0b | 515 | 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 | 516 | |
1410c222 | 517 | 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 |
518 | [#ifdef HAVE_SYS_SOCKET_H |
519 | #include <sys/socket.h> | |
520 | #endif | |
521 | ]) | |
522 | ||
2aeaf0fb ILT |
523 | AC_CACHE_CHECK([whether <ustat.h> can be used], |
524 | [libgo_cv_c_ustat_h], | |
dbe1e4a5 ILT |
525 | [CFLAGS_hold=$CFLAGS |
526 | CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE $OSCFLAGS" | |
2aeaf0fb ILT |
527 | AC_COMPILE_IFELSE( |
528 | [AC_LANG_SOURCE([ | |
529 | #include <sys/types.h> | |
530 | #ifdef HAVE_LINUX_FILTER_H | |
531 | #include <linux/filter.h> | |
532 | #endif | |
533 | #include <ustat.h> | |
dbe1e4a5 ILT |
534 | ])], [libgo_cv_c_ustat_h=yes], [libgo_cv_c_ustat_h=no]) |
535 | CFLAGS=$CFLAGS_hold]) | |
2aeaf0fb ILT |
536 | if test $libgo_cv_c_ustat_h = yes; then |
537 | AC_DEFINE(HAVE_USTAT_H, 1, | |
538 | [Define to 1 if you have the <ustat.h> header file and it works.]) | |
539 | fi | |
540 | ||
7a938933 | 541 | AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes) |
8955c80a | 542 | |
f8d9fa9e | 543 | AC_CHECK_FUNCS(strerror_r strsignal wait4 mincore setenv unsetenv dl_iterate_phdr) |
8955c80a | 544 | AM_CONDITIONAL(HAVE_STRERROR_R, test "$ac_cv_func_strerror_r" = yes) |
0b3189e7 | 545 | AM_CONDITIONAL(HAVE_WAIT4, test "$ac_cv_func_wait4" = yes) |
7a938933 | 546 | |
6b05fadd | 547 | 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 | 548 | AC_TYPE_OFF_T |
e02ed81e ILT |
549 | AC_CHECK_TYPES([loff_t]) |
550 | ||
324612b3 ILT |
551 | LIBS_hold="$LIBS" |
552 | LIBS="$LIBS -lm" | |
553 | AC_CHECK_FUNCS(cosl expl logl sinl tanl acosl asinl atanl atan2l expm1l ldexpl log10l log1pl) | |
554 | LIBS="$LIBS_hold" | |
555 | ||
08ee945e ILT |
556 | CFLAGS_hold="$CFLAGS" |
557 | CFLAGS="$CFLAGS $PTHREAD_CFLAGS" | |
558 | LIBS_hold="$LIBS" | |
559 | LIBS="$LIBS $PTHREAD_LIBS" | |
560 | AC_CHECK_FUNCS(sem_timedwait) | |
561 | CFLAGS="$CFLAGS_hold" | |
562 | LIBS="$LIBS_hold" | |
563 | ||
d2b480bc ILT |
564 | LIBS_hold="$LIBS" |
565 | LIBS="$LIBS $MATH_LIBS" | |
566 | AC_CHECK_FUNCS(matherr) | |
567 | LIBS="$LIBS_hold" | |
568 | ||
a7c48c8e ILT |
569 | AC_CACHE_CHECK([for __sync_bool_compare_and_swap_4], |
570 | [libgo_cv_func___sync_bool_compare_and_swap_4], | |
571 | [AC_LINK_IFELSE([ | |
572 | typedef unsigned int uint32 __attribute__ ((mode (SI))); | |
573 | uint32 i; | |
574 | int main() { return __sync_bool_compare_and_swap (&i, 0, 1); } | |
575 | ], | |
576 | [libgo_cv_func___sync_bool_compare_and_swap_4=yes], | |
577 | [libgo_cv_func___sync_bool_compare_and_swap_4=no])]) | |
578 | if test "$libgo_cv_func___sync_bool_compare_and_swap_4" = "yes"; then | |
579 | AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_4, 1, | |
580 | [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint32]) | |
581 | fi | |
582 | ||
12e3c396 ILT |
583 | AC_CACHE_CHECK([for __sync_bool_compare_and_swap_8], |
584 | [libgo_cv_func___sync_bool_compare_and_swap_8], | |
585 | [AC_LINK_IFELSE([ | |
586 | typedef unsigned int uint64 __attribute__ ((mode (DI))); | |
587 | uint64 i; | |
588 | int main() { return __sync_bool_compare_and_swap (&i, 0, 1); } | |
589 | ], | |
590 | [libgo_cv_func___sync_bool_compare_and_swap_8=yes], | |
591 | [libgo_cv_func___sync_bool_compare_and_swap_8=no])]) | |
592 | if test "$libgo_cv_func___sync_bool_compare_and_swap_8" = "yes"; then | |
593 | AC_DEFINE(HAVE_SYNC_BOOL_COMPARE_AND_SWAP_8, 1, | |
594 | [Define to 1 if the compiler provides the __sync_bool_compare_and_swap function for uint64]) | |
595 | fi | |
596 | ||
084996f1 ILT |
597 | AC_CACHE_CHECK([for __sync_fetch_and_add_4], |
598 | [libgo_cv_func___sync_fetch_and_add_4], | |
599 | [AC_LINK_IFELSE([ | |
600 | typedef unsigned int uint32 __attribute__ ((mode (SI))); | |
601 | uint32 i; | |
602 | int main() { return __sync_fetch_and_add (&i, 1); } | |
603 | ], | |
604 | [libgo_cv_func___sync_fetch_and_add_4=yes], | |
605 | [libgo_cv_func___sync_fetch_and_add_4=no])]) | |
606 | if test "$libgo_cv_func___sync_fetch_and_add_4" = "yes"; then | |
607 | AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD_4, 1, | |
608 | [Define to 1 if the compiler provides the __sync_fetch_and_add function for uint32]) | |
609 | fi | |
610 | ||
12e3c396 ILT |
611 | AC_CACHE_CHECK([for __sync_add_and_fetch_8], |
612 | [libgo_cv_func___sync_add_and_fetch_8], | |
613 | [AC_LINK_IFELSE([ | |
614 | typedef unsigned int uint64 __attribute__ ((mode (DI))); | |
615 | uint64 i; | |
616 | int main() { return __sync_add_and_fetch (&i, 1); } | |
617 | ], | |
618 | [libgo_cv_func___sync_add_and_fetch_8=yes], | |
619 | [libgo_cv_func___sync_add_and_fetch_8=no])]) | |
620 | if test "$libgo_cv_func___sync_add_and_fetch_8" = "yes"; then | |
621 | AC_DEFINE(HAVE_SYNC_ADD_AND_FETCH_8, 1, | |
622 | [Define to 1 if the compiler provides the __sync_add_and_fetch function for uint64]) | |
623 | fi | |
624 | ||
7a938933 ILT |
625 | dnl For x86 we want to use the -minline-all-stringops option to avoid |
626 | dnl forcing a stack split when calling memcpy and friends. | |
627 | AC_CACHE_CHECK([whether compiler supports -minline-all-stringops], | |
f2ee78b8 | 628 | [libgo_cv_c_stringops], |
7a938933 ILT |
629 | [CFLAGS_hold=$CFLAGS |
630 | CFLAGS="$CFLAGS -minline-all-stringops" | |
631 | AC_COMPILE_IFELSE([int i;], | |
f2ee78b8 ILT |
632 | [libgo_cv_c_stringops=yes], |
633 | [libgo_cv_c_stringops=no]) | |
7a938933 ILT |
634 | CFLAGS=$CFLAGS_hold]) |
635 | STRINGOPS_FLAG= | |
f2ee78b8 | 636 | if test "$libgo_cv_c_stringops" = yes; then |
7a938933 ILT |
637 | STRINGOPS_FLAG=-minline-all-stringops |
638 | fi | |
639 | AC_SUBST(STRINGOPS_FLAG) | |
640 | ||
9d465faf ILT |
641 | dnl For x86 we want to compile the math library with -mfancy-math-387 |
642 | dnl -funsafe-math-optimizations so that we can use the builtin | |
643 | dnl instructions directly. | |
644 | AC_CACHE_CHECK([whether compiler supports -mfancy-math-387], | |
645 | [libgo_cv_c_fancymath], | |
646 | [CFLAGS_hold=$CFLAGS | |
647 | CFLAGS="$CFLAGS -mfancy-math-387" | |
648 | AC_COMPILE_IFELSE([int i;], | |
649 | [libgo_cv_c_fancymath=yes], | |
650 | [libgo_cv_c_fancymath=no]) | |
651 | CFLAGS=$CFLAGS_hold]) | |
652 | MATH_FLAG= | |
653 | if test "$libgo_cv_c_fancymath" = yes; then | |
654 | MATH_FLAG="-mfancy-math-387 -funsafe-math-optimizations" | |
33a9145b ILT |
655 | else |
656 | MATH_FLAG="-ffp-contract=off" | |
9d465faf ILT |
657 | fi |
658 | AC_SUBST(MATH_FLAG) | |
659 | ||
7a938933 ILT |
660 | CFLAGS_hold=$CFLAGS |
661 | CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE" | |
e02ed81e | 662 | AC_CHECK_TYPES([off64_t]) |
7a938933 ILT |
663 | CFLAGS=$CFLAGS_hold |
664 | ||
207c35fa ILT |
665 | dnl Work out the size of the epoll_events struct on GNU/Linux. |
666 | AC_CACHE_CHECK([epoll_event size], | |
667 | [libgo_cv_c_epoll_event_size], | |
668 | [AC_COMPUTE_INT(libgo_cv_c_epoll_event_size, | |
669 | [sizeof (struct epoll_event)], | |
670 | [#include <sys/epoll.h>], | |
671 | [libgo_cv_c_epoll_event_size=0])]) | |
672 | SIZEOF_STRUCT_EPOLL_EVENT=${libgo_cv_c_epoll_event_size} | |
673 | AC_SUBST(SIZEOF_STRUCT_EPOLL_EVENT) | |
674 | ||
675 | dnl Work out the offset of the fd field in the epoll_events struct on | |
676 | dnl GNU/Linux. | |
677 | AC_CACHE_CHECK([epoll_event data.fd offset], | |
678 | [libgo_cv_c_epoll_event_fd_offset], | |
679 | [AC_COMPUTE_INT(libgo_cv_c_epoll_event_fd_offset, | |
680 | [offsetof (struct epoll_event, data.fd)], | |
681 | [#include <stddef.h> | |
682 | #include <sys/epoll.h>], | |
683 | [libgo_cv_c_epoll_event_fd_offset=0])]) | |
684 | STRUCT_EPOLL_EVENT_FD_OFFSET=${libgo_cv_c_epoll_event_fd_offset} | |
685 | AC_SUBST(STRUCT_EPOLL_EVENT_FD_OFFSET) | |
686 | ||
476013d6 ILT |
687 | dnl Check if <sys/stat.h> uses timespec_t for st_?tim members. Introduced |
688 | dnl in Solaris 12 for XPG7 compatibility. | |
689 | AC_EGREP_HEADER([timespec_t.*st_atim], [sys/stat.h], | |
690 | [have_stat_timespec=yes], [have_stat_timespec=no]) | |
691 | AM_CONDITIONAL(HAVE_STAT_TIMESPEC, test $have_stat_timespec = yes) | |
692 | ||
d2b480bc ILT |
693 | dnl See if struct exception is defined in <math.h>. |
694 | AC_CHECK_TYPE([struct exception], | |
695 | [libgo_has_struct_exception=yes], | |
696 | [libgo_has_struct_exception=no], | |
697 | [#include <math.h>]) | |
698 | if test "$libgo_has_struct_exception" = "yes"; then | |
699 | AC_DEFINE(HAVE_STRUCT_EXCEPTION, 1, | |
700 | [Define to 1 if <math.h> defines struct exception]) | |
701 | fi | |
702 | ||
7f57843f ILT |
703 | dnl See whether setcontext changes the value of TLS variables. |
704 | AC_CACHE_CHECK([whether setcontext clobbers TLS variables], | |
705 | [libgo_cv_lib_setcontext_clobbers_tls], | |
e6c5817d ILT |
706 | [CFLAGS_hold="$CFLAGS" |
707 | CFLAGS="$PTHREAD_CFLAGS" | |
708 | LIBS_hold="$LIBS" | |
7f57843f | 709 | LIBS="$LIBS $PTHREAD_LIBS" |
e6c5817d ILT |
710 | AC_CHECK_SIZEOF([void *]) |
711 | AS_VAR_ARITH([ptr_type_size], [$ac_cv_sizeof_void_p \* 8]) | |
7f57843f ILT |
712 | AC_RUN_IFELSE( |
713 | [AC_LANG_SOURCE([ | |
714 | #include <pthread.h> | |
715 | #include <stdlib.h> | |
716 | #include <ucontext.h> | |
717 | #include <unistd.h> | |
718 | ||
719 | __thread int tls; | |
720 | ||
721 | static char stack[[10 * 1024 * 1024]]; | |
722 | static ucontext_t c; | |
723 | ||
724 | /* Called via makecontext/setcontext. */ | |
725 | ||
726 | static void | |
727 | cfn (void) | |
728 | { | |
729 | exit (tls); | |
730 | } | |
731 | ||
732 | /* Called via pthread_create. */ | |
733 | ||
734 | static void * | |
735 | tfn (void *dummy) | |
736 | { | |
737 | /* The thread should still see this value after calling | |
738 | setcontext. */ | |
739 | tls = 0; | |
740 | ||
741 | setcontext (&c); | |
742 | ||
743 | /* The call to setcontext should not return. */ | |
744 | abort (); | |
745 | } | |
746 | ||
747 | int | |
748 | main () | |
749 | { | |
750 | pthread_t tid; | |
751 | ||
752 | /* The thread should not see this value. */ | |
753 | tls = 1; | |
754 | ||
755 | if (getcontext (&c) < 0) | |
756 | abort (); | |
757 | ||
758 | c.uc_stack.ss_sp = stack; | |
ca59d219 ILT |
759 | #ifdef MAKECONTEXT_STACK_TOP |
760 | c.uc_stack.ss_sp += sizeof stack; | |
761 | #endif | |
7f57843f ILT |
762 | c.uc_stack.ss_flags = 0; |
763 | c.uc_stack.ss_size = sizeof stack; | |
764 | c.uc_link = NULL; | |
765 | makecontext (&c, cfn, 0); | |
766 | ||
767 | if (pthread_create (&tid, NULL, tfn, NULL) != 0) | |
768 | abort (); | |
769 | ||
770 | if (pthread_join (tid, NULL) != 0) | |
771 | abort (); | |
772 | ||
773 | /* The thread should have called exit. */ | |
774 | abort (); | |
775 | } | |
776 | ])], | |
777 | [libgo_cv_lib_setcontext_clobbers_tls=no], | |
778 | [libgo_cv_lib_setcontext_clobbers_tls=yes], | |
e6c5817d ILT |
779 | [case "$target:$ptr_type_size" in |
780 | i?86-*-solaris2.1[[01]]:64 | x86_64*-*-solaris2.1[[01]]:64) | |
781 | libgo_cv_lib_setcontext_clobbers_tls=yes ;; | |
782 | *) | |
783 | libgo_cv_lib_setcontext_clobbers_tls=no ;; | |
7f57843f ILT |
784 | esac |
785 | ]) | |
e6c5817d | 786 | CFLAGS="$CFLAGS_hold" |
7f57843f ILT |
787 | LIBS="$LIBS_hold" |
788 | ]) | |
789 | if test "$libgo_cv_lib_setcontext_clobbers_tls" = "yes"; then | |
790 | AC_DEFINE(SETCONTEXT_CLOBBERS_TLS, 1, | |
791 | [Define if setcontext clobbers TLS variables]) | |
792 | fi | |
793 | ||
cc1a9ac8 ILT |
794 | AC_CACHE_CHECK([whether .eh_frame section should be read-only], |
795 | libgo_cv_ro_eh_frame, [ | |
796 | libgo_cv_ro_eh_frame=no | |
797 | echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c | |
798 | if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then | |
799 | if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then | |
800 | libgo_cv_ro_eh_frame=yes | |
801 | elif grep '.section.*eh_frame.*#alloc' conftest.c \ | |
802 | | grep -v '#write' > /dev/null; then | |
803 | libgo_cv_ro_eh_frame=yes | |
804 | fi | |
805 | fi | |
806 | rm -f conftest.* | |
807 | ]) | |
808 | if test "x$libgo_cv_ro_eh_frame" = xyes; then | |
809 | AC_DEFINE(EH_FRAME_FLAGS, "a", | |
810 | [Define to the flags needed for the .section .eh_frame directive.]) | |
811 | else | |
812 | AC_DEFINE(EH_FRAME_FLAGS, "aw", | |
813 | [Define to the flags needed for the .section .eh_frame directive.]) | |
814 | fi | |
815 | ||
a819231d ILT |
816 | AC_CACHE_CHECK([if compiler supports -Qunused-arguments], |
817 | [libgo_cv_c_unused_arguments], | |
818 | [CFLAGS_hold=$CFLAGS | |
819 | CFLAGS="$CFLAGS -Qunused-arguments" | |
820 | AC_COMPILE_IFELSE([[int i;]], | |
821 | [libgo_cv_c_unused_arguments=yes], | |
822 | [libgo_cv_c_unused_arguments=no]) | |
823 | CFLAGS=$CFLAGS_hold]) | |
824 | ||
cc1a9ac8 ILT |
825 | AC_CACHE_CHECK([if assembler supports GNU comdat group syntax], |
826 | libgo_cv_as_comdat_gnu, [ | |
827 | echo '.section .text,"axG",@progbits,.foo,comdat' > conftest.s | |
a819231d ILT |
828 | CFLAGS_hold=$CFLAGS |
829 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
830 | CFLAGS="$CFLAGS -Qunused-arguments" | |
831 | fi | |
cc1a9ac8 ILT |
832 | if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then |
833 | libgo_cv_as_comdat_gnu=yes | |
834 | else | |
835 | libgo_cv_as_comdat_gnu=no | |
836 | fi | |
a819231d | 837 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
838 | ]) |
839 | if test "x$libgo_cv_as_comdat_gnu" = xyes; then | |
840 | AC_DEFINE(HAVE_AS_COMDAT_GAS, 1, | |
841 | [Define if your assembler supports GNU comdat group syntax.]) | |
842 | fi | |
843 | ||
844 | AC_CACHE_CHECK([assembler supports pc related relocs], | |
845 | libgo_cv_as_x86_pcrel, [ | |
846 | libgo_cv_as_x86_pcrel=yes | |
847 | echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s | |
a819231d ILT |
848 | CFLAGS_hold=$CFLAGS |
849 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
850 | CFLAGS="$CFLAGS -Qunused-arguments" | |
851 | fi | |
cc1a9ac8 ILT |
852 | if $CC $CFLAGS -c conftest.s 2>&1 | $EGREP -i 'illegal|warning' > /dev/null; then |
853 | libgo_cv_as_x86_pcrel=no | |
854 | fi | |
a819231d | 855 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
856 | ]) |
857 | if test "x$libgo_cv_as_x86_pcrel" = xyes; then | |
858 | AC_DEFINE(HAVE_AS_X86_PCREL, 1, | |
859 | [Define if your assembler supports PC relative relocs.]) | |
860 | fi | |
861 | ||
862 | AC_CACHE_CHECK([assembler supports unwind section type], | |
863 | libgo_cv_as_x86_64_unwind_section_type, [ | |
864 | libgo_cv_as_x86_64_unwind_section_type=yes | |
865 | echo '.section .eh_frame,"a",@unwind' > conftest.s | |
a819231d ILT |
866 | CFLAGS_hold=$CFLAGS |
867 | if test "$libgo_cv_c_unused_arguments" = yes; then | |
868 | CFLAGS="$CFLAGS -Qunused-arguments" | |
869 | fi | |
cc1a9ac8 ILT |
870 | if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then |
871 | libgo_cv_as_x86_64_unwind_section_type=no | |
872 | fi | |
a819231d | 873 | CFLAGS=$CFLAGS_hold |
cc1a9ac8 ILT |
874 | ]) |
875 | if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then | |
876 | AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, | |
877 | [Define if your assembler supports unwind section type.]) | |
878 | fi | |
879 | ||
7a938933 ILT |
880 | AC_CACHE_SAVE |
881 | ||
882 | if test ${multilib} = yes; then | |
883 | multilib_arg="--enable-multilib" | |
884 | else | |
885 | multilib_arg= | |
886 | fi | |
887 | ||
888 | AC_CONFIG_FILES(Makefile testsuite/Makefile) | |
889 | ||
890 | AC_CONFIG_COMMANDS([default], | |
891 | [if test -n "$CONFIG_FILES"; then | |
892 | # Multilibs need MULTISUBDIR defined correctly in certain makefiles so | |
893 | # that multilib installs will end up installed in the correct place. | |
894 | # The testsuite needs it for multilib-aware ABI baseline files. | |
895 | # To work around this not being passed down from config-ml.in -> | |
896 | # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually | |
897 | # append it here. Only modify Makefiles that have just been created. | |
898 | # | |
899 | # Also, get rid of this simulated-VPATH thing that automake does. | |
900 | cat > vpsed << \_EOF | |
901 | s!`test -f '$<' || echo '$(srcdir)/'`!! | |
902 | _EOF | |
903 | for i in $SUBDIRS; do | |
904 | case $CONFIG_FILES in | |
905 | *${i}/Makefile*) | |
906 | #echo "Adding MULTISUBDIR to $i/Makefile" | |
907 | sed -f vpsed $i/Makefile > tmp | |
908 | grep '^MULTISUBDIR =' Makefile >> tmp | |
909 | mv tmp $i/Makefile | |
910 | ;; | |
911 | esac | |
912 | done | |
913 | rm vpsed | |
914 | fi | |
915 | ], | |
916 | [ | |
917 | # Variables needed in config.status (file generation) which aren't already | |
918 | # passed by autoconf. | |
919 | SUBDIRS="$SUBDIRS" | |
920 | ]) | |
921 | ||
922 | AC_OUTPUT |