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Add testcase for PR43657.
[pf3gnuchains/gcc-fork.git] / libgo / configure.ac
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
14 libtool_VERSION=1:0:0
15 AC_SUBST(libtool_VERSION)
16
17 AM_ENABLE_MULTILIB(, ..)
18
19 AC_CANONICAL_SYSTEM
20 target_alias=${target_alias-$host_alias}
21
22 AM_INIT_AUTOMAKE([1.9.3 no-define foreign -Wall])
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
45 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
46 AC_SUBST(WARN_FLAGS)
47
48 dnl FIXME: This should be controlled by --enable-maintainer-mode.
49 WERROR="-Werror"
50 AC_SUBST(WERROR)
51
52 glibgo_toolexecdir=no
53 glibgo_toolexeclibdir=no
54 glibgo_prefixdir=$prefix
55
56 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
57 AC_ARG_ENABLE([version-specific-runtime-libs],
58   AC_HELP_STRING([--enable-version-specific-runtime-libs],
59                  [Specify that runtime libraries should be installed in a compiler-specific directory]),
60   [case "$enableval" in
61     yes) version_specific_libs=yes ;;
62     no)  version_specific_libs=no ;;
63     *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
64    esac],
65   [version_specific_libs=no])
66 AC_MSG_RESULT($version_specific_libs)
67
68 # Version-specific runtime libs processing.
69 if test $version_specific_libs = yes; then
70   glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
71   glibgo_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
72 fi
73
74 # Calculate glibgo_toolexecdir, glibgo_toolexeclibdir
75 # Install a library built with a cross compiler in tooldir, not libdir.
76 if test x"$glibgo_toolexecdir" = x"no"; then
77   if test -n "$with_cross_host" &&
78      test x"$with_cross_host" != x"no"; then
79     glibgo_toolexecdir='${exec_prefix}/${host_alias}'
80     glibgo_toolexeclibdir='${toolexecdir}/lib'
81   else
82     glibgo_toolexecdir='${libdir}/gcc/${host_alias}'
83     glibgo_toolexeclibdir='${libdir}'
84   fi
85   multi_os_directory=`$CC -print-multi-os-directory`
86   case $multi_os_directory in
87     .) ;; # Avoid trailing /.
88     *) glibgo_toolexeclibdir=$glibgo_toolexeclibdir/$multi_os_directory ;;
89   esac
90 fi
91
92 AC_SUBST(glibgo_prefixdir)
93 AC_SUBST(glibgo_toolexecdir)
94 AC_SUBST(glibgo_toolexeclibdir)
95
96 # See if the user wants to configure without libffi.  Some
97 # architectures don't support it.  FIXME: We should set a default
98 # based on the host.
99 AC_ARG_WITH(libffi,
100   AS_HELP_STRING([--without-libffi],
101                  [don't use libffi]),
102   [:],
103   [with_libffi=${with_libffi_default-yes}])
104
105 LIBFFI=
106 LIBFFIINCS=
107 if test "$with_libffi" != no; then
108    AC_DEFINE(USE_LIBFFI, 1, [Define if we're to use libffi.])
109    LIBFFI=../libffi/libffi_convenience.la
110    LIBFFIINCS='-I$(top_srcdir)/../libffi/include -I../libffi/include'
111 fi
112 AC_SUBST(LIBFFI)
113 AC_SUBST(LIBFFIINCS)
114
115 is_darwin=no
116 is_freebsd=no
117 is_linux=no
118 is_rtems=no
119 is_solaris=no
120 GOOS=unknown
121 case ${host} in
122   *-*-darwin*)   is_darwin=yes;  GOOS=darwin ;;
123   *-*-freebsd*)  is_freebsd=yes; GOOS=freebsd ;;
124   *-*-linux*)    is_linux=yes;   GOOS=linux ;;
125   *-*-rtems*)    is_rtems=yes;   GOOS=rtems ;;
126   *-*-solaris2*) is_solaris=yes; GOOS=solaris ;;
127 esac
128 AM_CONDITIONAL(LIBGO_IS_DARWIN, test $is_darwin = yes)
129 AM_CONDITIONAL(LIBGO_IS_FREEBSD, test $is_freebsd = yes)
130 AM_CONDITIONAL(LIBGO_IS_LINUX, test $is_linux = yes)
131 AM_CONDITIONAL(LIBGO_IS_RTEMS, test $is_rtems = yes)
132 AM_CONDITIONAL(LIBGO_IS_SOLARIS, test $is_solaris = yes)
133 AC_SUBST(GOOS)
134
135 dnl N.B. Keep in sync with gcc/testsuite/go.test/go-test.exp (go-set-goarch).
136 is_386=no
137 is_arm=no
138 is_m68k=no
139 is_mips=no
140 is_mips64=no
141 is_ppc=no
142 is_ppc64=no
143 is_sparc=no
144 is_sparc64=no
145 is_x86_64=no
146 GOARCH=unknown
147 case ${host} in
148   arm*-*-* | strongarm*-*-* | ep9312*-*-* | xscale-*-*)
149     is_arm=yes
150     GOARCH=arm
151     ;;
152 changequote(,)dnl
153   i[34567]86-*-* | x86_64-*-*)
154 changequote([,])dnl
155     AC_PREPROC_IFELSE([
156 #ifdef __x86_64__
157 #error 64-bit
158 #endif],
159 [is_386=yes], [is_x86_64=yes])
160     if test "$is_386" = "yes"; then
161       GOARCH=386
162     else
163       GOARCH=amd64
164     fi
165     ;;
166   m68k*-*-*)
167     is_m68k=yes
168     GOARCH=m68k
169     ;;
170   mips*-*-*)
171     AC_PREPROC_IFELSE([
172 #ifdef __mips64
173 #error 64-bit
174 #endif],
175 [is_mips=yes], [is_mips64=yes])
176     if test "$is_mips" = "yes"; then
177       GOARCH=mips
178     else
179       GOARCH=mips64
180     fi
181     ;;
182   rs6000*-*-* | powerpc*-*-*)
183     AC_PREPROC_IFELSE([
184 #ifdef _ARCH_PPC64
185 #error 64-bit
186 #endif],
187 [is_ppc=yes], [is_ppc64=yes])
188     if test "$is_ppc" = "yes"; then
189       GOARCH=ppc
190     else
191       GOARCH=ppc64
192     fi
193     ;;
194   sparc*-*-*)
195     AC_PREPROC_IFELSE([
196 #if defined(__sparcv9) || defined(__arch64__)
197 #error 64-bit
198 #endif],
199 [is_sparc=yes], [is_sparc64=yes])
200     if test "$is_sparc" = "yes"; then
201       GOARCH=sparc
202     else
203       GOARCH=sparc64
204     fi
205     ;;
206 esac
207 AM_CONDITIONAL(LIBGO_IS_386, test $is_386 = yes)
208 AM_CONDITIONAL(LIBGO_IS_ARM, test $is_arm = yes)
209 AM_CONDITIONAL(LIBGO_IS_M68K, test $is_m68k = yes)
210 AM_CONDITIONAL(LIBGO_IS_MIPS, test $is_mips = yes)
211 AM_CONDITIONAL(LIBGO_IS_MIPS64, test $is_mips64 = yes)
212 AM_CONDITIONAL(LIBGO_IS_PPC, test $is_ppc = yes)
213 AM_CONDITIONAL(LIBGO_IS_PPC64, test $is_ppc64 = yes)
214 AM_CONDITIONAL(LIBGO_IS_SPARC, test $is_sparc = yes)
215 AM_CONDITIONAL(LIBGO_IS_SPARC64, test $is_sparc64 = yes)
216 AM_CONDITIONAL(LIBGO_IS_X86_64, test $is_x86_64 = yes)
217 AC_SUBST(GOARCH)
218
219 dnl Some files are only present when needed for specific architectures.
220 GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=
221 if test -f ${srcdir}/syscalls/syscall_${GOOS}_${GOARCH}.go; then
222   GO_SYSCALLS_SYSCALL_OS_ARCH_FILE=syscalls/syscall_${GOOS}_${GOARCH}.go
223 fi
224 AC_SUBST(GO_SYSCALLS_SYSCALL_OS_ARCH_FILE)
225
226 GO_DEBUG_PROC_REGS_OS_ARCH_FILE=
227 if test -f ${srcdir}/go/debug/proc/regs_${GOOS}_${GOARCH}.go; then
228   GO_DEBUG_PROC_REGS_OS_ARCH_FILE=go/debug/proc/regs_${GOOS}_${GOARCH}.go
229 fi
230 AC_SUBST(GO_DEBUG_PROC_REGS_OS_ARCH_FILE)
231
232 dnl Use -fsplit-stack when compiling C code if available.
233 AC_CACHE_CHECK([whether -fsplit-stack is supported],
234 [libgo_cv_c_split_stack_supported],
235 [CFLAGS_hold=$CFLAGS
236 CFLAGS="$CFLAGS -fsplit-stack"
237 AC_COMPILE_IFELSE([[int i;]],
238 [libgo_cv_c_split_stack_supported=yes],
239 [libgo_cv_c_split_stack_supported=no])
240 CFLAGS=$CFLAGS_hold])
241 if test "$libgo_cv_c_split_stack_supported" = yes; then
242   SPLIT_STACK=-fsplit-stack
243   AC_DEFINE(USING_SPLIT_STACK, 1,
244                 [Define if the compiler supports -fsplit-stack])
245 else
246   SPLIT_STACK=
247 fi
248 AC_SUBST(SPLIT_STACK)
249 AM_CONDITIONAL(USING_SPLIT_STACK,
250         test "$libgo_cv_c_split_stack_supported" = yes)
251
252 dnl Check whether the linker does stack munging when calling from
253 dnl split-stack into non-split-stack code.  We check this by looking
254 dnl at the --help output.  FIXME: This is only half right: it's
255 dnl possible for the linker to support this for some targets but not
256 dnl others.
257 AC_CACHE_CHECK([whether linker supports split stack],
258 [libgo_cv_c_linker_supports_split_stack],
259 libgo_cv_c_linker_supports_split_stack=no
260 if $LD --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
261   libgo_cv_c_linker_supports_split_stack=yes
262 fi)
263 if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
264   AC_DEFINE(LINKER_SUPPORTS_SPLIT_STACK, 1,
265             [Define if the linker support split stack adjustments])
266 fi
267
268 dnl Test for the -lm library.
269 MATH_LIBS=
270 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)
271 AC_SUBST(MATH_LIBS)
272
273 dnl Test for -lsocket and -lnsl.  Copied from libjava/configure.ac.
274 AC_CACHE_CHECK([for socket libraries], libgo_cv_lib_sockets,
275   [libgo_cv_lib_sockets=
276    libgo_check_both=no
277    AC_CHECK_FUNC(connect, libgo_check_socket=no, libgo_check_socket=yes)
278    if test "$libgo_check_socket" = "yes"; then
279      unset ac_cv_func_connect
280      AC_CHECK_LIB(socket, main, libgo_cv_lib_sockets="-lsocket",
281                   libgo_check_both=yes)
282    fi
283    if test "$libgo_check_both" = "yes"; then
284      libgo_old_libs=$LIBS
285      LIBS="$LIBS -lsocket -lnsl"
286      unset ac_cv_func_accept
287      AC_CHECK_FUNC(accept,
288                    [libgo_check_nsl=no
289                     libgo_cv_lib_sockets="-lsocket -lnsl"])
290      unset ac_cv_func_accept
291      LIBS=$libgo_old_libs
292    fi
293    unset ac_cv_func_gethostbyname
294    libgo_old_libs="$LIBS"
295    AC_CHECK_FUNC(gethostbyname, ,
296                  [AC_CHECK_LIB(nsl, main,
297                         [libgo_cv_lib_sockets="$libgo_cv_lib_sockets -lnsl"])])
298    unset ac_cv_func_gethostbyname
299    LIBS=$libgo_old_libs
300 ])
301 NET_LIBS="$libgo_cv_lib_sockets"
302 AC_SUBST(NET_LIBS)
303
304 dnl Test whether the compiler supports the -pthread option.
305 AC_CACHE_CHECK([whether -pthread is supported],
306 [libgo_cv_lib_pthread],
307 [CFLAGS_hold=$CFLAGS
308 CFLAGS="$CFLAGS -pthread"
309 AC_COMPILE_IFELSE([[int i;]],
310 [libgo_cv_lib_pthread=yes],
311 [libgo_cv_lib_pthread=no])
312 CFLAGS=$CFLAGS_hold])
313 PTHREAD_CFLAGS=
314 if test "$libgo_cv_lib_pthread" = yes; then
315   PTHREAD_CFLAGS=-pthread
316 fi
317 AC_SUBST(PTHREAD_CFLAGS)
318
319 dnl Test for the -lpthread library.
320 PTHREAD_LIBS=
321 AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS=-lpthread)
322 AC_SUBST(PTHREAD_LIBS)
323
324 dnl Test if -lrt is required for sched_yield.
325 AC_SEARCH_LIBS([sched_yield], [rt])
326
327 AC_C_BIGENDIAN
328
329 GCC_CHECK_UNWIND_GETIPINFO
330
331 AC_CHECK_HEADERS(sys/mman.h syscall.h sys/epoll.h sys/ptrace.h sys/user.h sys/utsname.h)
332 AM_CONDITIONAL(HAVE_SYS_MMAN_H, test "$ac_cv_header_sys_mman_h" = yes)
333 AC_CHECK_FUNCS(srandom random strsignal)
334
335 dnl For x86 we want to use the -minline-all-stringops option to avoid
336 dnl forcing a stack split when calling memcpy and friends.
337 AC_CACHE_CHECK([whether compiler supports -minline-all-stringops],
338 [libgo_cv_c_stringops],
339 [CFLAGS_hold=$CFLAGS
340 CFLAGS="$CFLAGS -minline-all-stringops"
341 AC_COMPILE_IFELSE([int i;],
342 [libgo_cv_c_stringops=yes],
343 [libgo_cv_c_stringops=no])
344 CFLAGS=$CFLAGS_hold])
345 STRINGOPS_FLAG=
346 if test "$libgo_cv_c_stringops" = yes; then
347   STRINGOPS_FLAG=-minline-all-stringops
348 fi
349 AC_SUBST(STRINGOPS_FLAG)
350
351 CFLAGS_hold=$CFLAGS
352 CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
353 AC_CHECK_TYPES(off64_t)
354 CFLAGS=$CFLAGS_hold
355
356 AC_CACHE_SAVE
357
358 if test ${multilib} = yes; then
359   multilib_arg="--enable-multilib"
360 else
361   multilib_arg=
362 fi
363
364 AC_CONFIG_FILES(Makefile testsuite/Makefile)
365
366 AC_CONFIG_COMMANDS([default],
367 [if test -n "$CONFIG_FILES"; then
368    # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
369    # that multilib installs will end up installed in the correct place.
370    # The testsuite needs it for multilib-aware ABI baseline files.
371    # To work around this not being passed down from config-ml.in ->
372    # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
373    # append it here.  Only modify Makefiles that have just been created.
374    #
375    # Also, get rid of this simulated-VPATH thing that automake does.
376    cat > vpsed << \_EOF
377 s!`test -f '$<' || echo '$(srcdir)/'`!!
378 _EOF
379    for i in $SUBDIRS; do
380     case $CONFIG_FILES in
381      *${i}/Makefile*)
382        #echo "Adding MULTISUBDIR to $i/Makefile"
383        sed -f vpsed $i/Makefile > tmp
384        grep '^MULTISUBDIR =' Makefile >> tmp
385        mv tmp $i/Makefile
386        ;;
387     esac
388    done
389    rm vpsed
390  fi
391 ],
392 [
393 # Variables needed in config.status (file generation) which aren't already
394 # passed by autoconf.
395 SUBDIRS="$SUBDIRS"
396 ])
397
398 AC_OUTPUT