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[/] [or1200_soc/] [trunk/] [sw/] [Meansoffreedom/] [C_plus_hack/] [configure.ac] - Blame information for rev 26

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1 26 qaztronic
# Process this file with autoconf to produce a configure script, like so:
2
# aclocal && autoconf && autoheader && automake
3
 
4
AC_PREREQ(2.57)
5
AC_INIT(package-unused, version-unused,, libstdc++)
6
AC_CONFIG_SRCDIR(src/ios.cc)
7
AC_CONFIG_HEADER(config.h)
8
 
9
# This works around the fact that libtool configuration may change LD
10
# for this particular configuration, but some shells, instead of
11
# keeping the changes in LD private, export them just because LD is
12
# exported.  Only used at the end of this file.
13
### am handles this now?  ORIGINAL_LD_FOR_MULTILIBS=$LD
14
 
15
# For libtool versioning info, format is CURRENT:REVISION:AGE
16
libtool_VERSION=6:3:0
17
AC_SUBST(libtool_VERSION)
18
 
19
# Find the rest of the source tree framework.
20
GLIBCXX_TOPREL_CONFIGURE
21
 
22
# Gets build, host, target, *_vendor, *_cpu, *_os, etc.
23
#
24
# You will slowly go insane if you do not grok the following fact:  when
25
# building v3 as part of the compiler, the top-level /target/ becomes the
26
# library's /host/.  configure then causes --target to default to --host,
27
# exactly like any other package using autoconf.  Therefore, 'target' and
28
# 'host' will always be the same.  This makes sense both for native and
29
# cross compilers, just think about it for a little while.  :-)
30
#
31
# Also, if v3 is being configured as part of a cross compiler, the top-level
32
# configure script will pass the "real" host as $with_cross_host.
33
#
34
# Do not delete or change the following two lines.  For why, see
35
# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
36
AC_CANONICAL_SYSTEM
37
target_alias=${target_alias-$host_alias}
38
 
39
# Handy for debugging:
40
#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5
41
 
42
if test "$build" != "$host"; then
43
  # We are being configured with some form of cross compiler.
44
  GLIBCXX_IS_NATIVE=false
45
  GCC_NO_EXECUTABLES
46
else
47
  GLIBCXX_IS_NATIVE=true
48
fi
49
 
50
# Sets up automake.  Must come after AC_CANONICAL_SYSTEM.  Each of the
51
# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
52
#  1.x:  minimum required version
53
#  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
54
#              of other PACKAGE_* variables will, however, and there's nothing
55
#              we can do about that; they come from AC_INIT).
56
#  foreign:  we don't follow the normal rules for GNU packages (no COPYING
57
#            file in the top srcdir, etc, etc), so stop complaining.
58
#  no-dependencies:  turns off auto dependency generation (just for now)
59
#  -Wall:  turns on all automake warnings...
60
#  -Wno-portability:  ...except this one, since GNU make is now required.
61
AM_INIT_AUTOMAKE([1.7.6 no-define foreign no-dependencies -Wall -Wno-portability])
62
 
63
# Runs configure.host, finds CC, CXX, and assorted other critical bits.  Sets
64
# up critical shell variables.
65
GLIBCXX_CONFIGURE
66
 
67
#AC_MSG_NOTICE([====== Starting libtool configuration])
68
 
69
if test "x${with_newlib}" != "xyes"; then
70
AC_LIBTOOL_DLOPEN
71
fi
72
 
73
AM_PROG_LIBTOOL
74
AC_SUBST(enable_shared)
75
AC_SUBST(enable_static)
76
#AC_MSG_NOTICE([====== Finished libtool configuration]) ; sleep 10
77
 
78
# Possibly disable most of the library.
79
## XXX Consider skipping unncessary tests altogether in this case, rather
80
## than just ignoring the results.  Faster /and/ more correct, win win.
81
GLIBCXX_ENABLE_HOSTED
82
 
83
# Check for support bits and g++ features that don't require linking.
84
GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
85
GLIBCXX_ENABLE_PCH($is_hosted)
86
 
87
# Enable all the variable C++ runtime options.
88
# NB: C_MBCHAR must come early.
89
GLIBCXX_ENABLE_CSTDIO
90
GLIBCXX_ENABLE_CLOCALE
91
GLIBCXX_ENABLE_ALLOCATOR
92
GLIBCXX_ENABLE_CHEADERS($c_model)  dnl c_model from configure.host
93
GLIBCXX_ENABLE_C_MBCHAR([yes])
94
GLIBCXX_ENABLE_C99([yes])
95
GLIBCXX_ENABLE_LONG_LONG([yes])
96
GLIBCXX_ENABLE_THREADS
97
GLIBCXX_ENABLE_CONCEPT_CHECKS([no])
98
GLIBCXX_ENABLE_DEBUG_FLAGS(["-g3 -O0"])
99
GLIBCXX_ENABLE_DEBUG([no])
100
GLIBCXX_ENABLE_CXX_FLAGS
101
GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no])
102
 
103
# No surprises, no surprises...
104
if test $atomicity_dir = cpu/generic ; then
105
  AC_MSG_WARN([No native atomic operations are provided for this platform.])
106
  if test $target_thread_file = single; then
107
    AC_MSG_WARN([They cannot be faked when thread support is disabled.])
108
    AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
109
  else
110
    AC_MSG_WARN([They will be faked using a mutex.])
111
    AC_MSG_WARN([Performance of certain classes will degrade as a result.])
112
  fi
113
fi
114
 
115
 
116
if $GLIBCXX_IS_NATIVE; then
117
 
118
  # We can do more elaborate tests that assume a working linker.
119
  CANADIAN=no
120
 
121
  # Check for available headers.
122
  AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h machine/endian.h \
123
  machine/param.h sys/machine.h fp.h locale.h float.h inttypes.h gconv.h \
124
  sys/types.h])
125
 
126
  GLIBCXX_CHECK_COMPILER_FEATURES
127
  GLIBCXX_CHECK_LINKER_FEATURES
128
  GLIBCXX_CHECK_MATH_SUPPORT
129
  GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
130
  GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
131
  GLIBCXX_CHECK_WCHAR_T_SUPPORT
132
  GLIBCXX_CHECK_STDLIB_SUPPORT
133
 
134
  # For showmanyc_helper().
135
  AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h)
136
  GLIBCXX_CHECK_POLL
137
  GLIBCXX_CHECK_S_ISREG_OR_S_IFREG
138
 
139
  # For xsputn_2().
140
  AC_CHECK_HEADERS(sys/uio.h)
141
  GLIBCXX_CHECK_WRITEV
142
 
143
  # For the __streamoff_base_type typedef.
144
  GLIBCXX_CHECK_INT64_T
145
 
146
  # For LFS support.
147
  GLIBCXX_CHECK_LFS
148
 
149
  AC_LC_MESSAGES
150
 
151
  AC_TRY_COMPILE(
152
    [#include ],
153
    [sigjmp_buf env;
154
     while (! sigsetjmp (env, 1))
155
       siglongjmp (env, 1);
156
    ],
157
    [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define if sigsetjmp is available.])])
158
 
159
  AC_FUNC_MMAP
160
 
161
else
162
 
163
  # This lets us hard-code the functionality we know we'll have in the cross
164
  # target environment.  "Let" is a sugar-coated word placed on an especially
165
  # dull and tedious hack, actually.
166
  #
167
  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
168
  # that involve linking, can't be used:
169
  #    "cannot open sim-crt0.o"
170
  #    "cannot open crt0.o"
171
  # etc.  All this is because there currently exists no unified, consistent
172
  # way for top level CC information to be passed down to target directories:
173
  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
174
  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
175
  # crosses can be removed.
176
 
177
  # If Canadian cross, then don't pick up tools from the build directory.
178
  # Used only in GLIBCXX_EXPORT_INCLUDES.
179
  if test -n "$with_cross_host" &&
180
     test x"$build_alias" != x"$with_cross_host" &&
181
     test x"$build" != x"$target";
182
  then
183
    CANADIAN=yes
184
  else
185
    CANADIAN=no
186
  fi
187
 
188
  # Construct crosses by hand, eliminating bits that need ld...
189
  # GLIBCXX_CHECK_COMPILER_FEATURES
190
  # GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
191
  # GLIBCXX_CHECK_MATH_SUPPORT
192
 
193
  # First, test for "known" system libraries.  We may be using newlib even
194
  # on a hosted environment.
195
  if test "x${with_newlib}" = "xyes"; then
196
    os_include_dir="os/newlib"
197
    AC_DEFINE(HAVE_HYPOT)
198
 
199
    # GLIBCXX_CHECK_STDLIB_SUPPORT
200
    AC_DEFINE(HAVE_STRTOF)
201
    # AC_FUNC_MMAP
202
    AC_DEFINE(HAVE_MMAP)
203
 
204
    AC_DEFINE(HAVE_ACOSF)
205
    AC_DEFINE(HAVE_ASINF)
206
    AC_DEFINE(HAVE_ATAN2F)
207
    AC_DEFINE(HAVE_ATANF)
208
    AC_DEFINE(HAVE_CEILF)
209
    AC_DEFINE(HAVE_COPYSIGN)
210
    AC_DEFINE(HAVE_COPYSIGNF)
211
    AC_DEFINE(HAVE_COSF)
212
    AC_DEFINE(HAVE_COSHF)
213
    AC_DEFINE(HAVE_EXPF)
214
    AC_DEFINE(HAVE_FABSF)
215
    AC_DEFINE(HAVE_FLOORF)
216
    AC_DEFINE(HAVE_FMODF)
217
    AC_DEFINE(HAVE_FREXPF)
218
    AC_DEFINE(HAVE_LDEXPF)
219
    AC_DEFINE(HAVE_LOG10F)
220
    AC_DEFINE(HAVE_LOGF)
221
    AC_DEFINE(HAVE_MODFF)
222
    AC_DEFINE(HAVE_POWF)
223
    AC_DEFINE(HAVE_SINF)
224
    AC_DEFINE(HAVE_SINHF)
225
    AC_DEFINE(HAVE_SQRTF)
226
    AC_DEFINE(HAVE_TANF)
227
    AC_DEFINE(HAVE_TANHF)
228
 
229
    AC_DEFINE(HAVE_S_ISREG)
230
    AC_DEFINE(HAVE_S_IFREG)
231
  else
232
    m4_include([crossconfig.m4])
233
  fi
234
 
235
  # At some point, we should differentiate between architectures
236
  # like x86, which have long double versions, and alpha/powerpc/etc.,
237
  # which don't. For the time being, punt.
238
  if test x"long_double_math_on_this_cpu" = x"yes"; then
239
    AC_DEFINE(HAVE_ACOSL)
240
    AC_DEFINE(HAVE_ASINL)
241
    AC_DEFINE(HAVE_ATAN2L)
242
    AC_DEFINE(HAVE_ATANL)
243
    AC_DEFINE(HAVE_CEILL)
244
    AC_DEFINE(HAVE_COPYSIGNL)
245
    AC_DEFINE(HAVE_COSL)
246
    AC_DEFINE(HAVE_COSHL)
247
    AC_DEFINE(HAVE_EXPL)
248
    AC_DEFINE(HAVE_FABSL)
249
    AC_DEFINE(HAVE_FLOORL)
250
    AC_DEFINE(HAVE_FMODL)
251
    AC_DEFINE(HAVE_FREXPL)
252
    AC_DEFINE(HAVE_LDEXPL)
253
    AC_DEFINE(HAVE_LOG10L)
254
    AC_DEFINE(HAVE_LOGL)
255
    AC_DEFINE(HAVE_MODFL)
256
    AC_DEFINE(HAVE_POWL)
257
    AC_DEFINE(HAVE_SINCOSL)
258
    AC_DEFINE(HAVE_SINL)
259
    AC_DEFINE(HAVE_SINHL)
260
    AC_DEFINE(HAVE_SQRTL)
261
    AC_DEFINE(HAVE_TANL)
262
    AC_DEFINE(HAVE_TANHL)
263
  fi
264
 
265
fi
266
 
267
# This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
268
GLIBCXX_ENABLE_SYMVERS([yes])
269
 
270
# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE.
271
GLIBCXX_CONFIGURE_TESTSUITE
272
 
273
# Propagate the target-specific source directories through the build chain.
274
# (Nothing currently uses cpu_include_dir directly; only atomicity_include_dir
275
# uses it, and it only gets used in this file.)
276
ATOMICITY_SRCDIR=config/${atomicity_dir}
277
ATOMIC_WORD_SRCDIR=config/${atomic_word_dir}
278
OS_INC_SRCDIR=config/${os_include_dir}
279
AC_SUBST(ATOMICITY_SRCDIR)
280
AC_SUBST(ATOMIC_WORD_SRCDIR)
281
AC_SUBST(OS_INC_SRCDIR)
282
 
283
# Determine cross-compile flags and AM_CONDITIONALs.
284
#AC_SUBST(GLIBCXX_IS_NATIVE)
285
#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
286
# from GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT:
287
#AM_CONDITIONAL(GLIBCXX_BUILD_LIBMATH,  test $need_libmath = yes)
288
GLIBCXX_EVALUATE_CONDITIONALS
289
 
290
AC_CACHE_SAVE
291
 
292
if test ${multilib} = yes; then
293
  multilib_arg="--enable-multilib"
294
else
295
  multilib_arg=
296
fi
297
 
298
# Export all the install information.
299
GLIBCXX_EXPORT_INSTALL_INFO
300
 
301
# Export all the include and flag information to Makefiles.
302
GLIBCXX_EXPORT_INCLUDES
303
GLIBCXX_EXPORT_FLAGS
304
 
305
if ${CONFIG_SHELL-/bin/sh} ./libtool --tag CXX --features |
306
   grep "enable shared" > /dev/null;
307
then
308
  LIBSUPCXX_PICFLAGS=-prefer-pic
309
else
310
  LIBSUPCXX_PICFLAGS=
311
fi
312
AC_SUBST(LIBSUPCXX_PICFLAGS)
313
 
314
dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros,
315
dnl which can all be called multiple times as needed, plus one (different)
316
dnl AC_OUTPUT macro.  This one lists the files to be created:
317
AC_CONFIG_FILES( \
318
  Makefile \
319
  AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ])
320
  )
321
AC_CONFIG_FILES([scripts/check_survey],[chmod +x scripts/check_survey])
322
AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags])
323
 
324
dnl These commands are run at the end of config.status:
325
AC_CONFIG_COMMANDS([default],
326
[if test -n "$CONFIG_FILES"; then
327
   # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
328
   # that multilib installs will end up installed in the correct place.
329
   # The testsuite needs it for multilib-aware ABI baseline files.
330
   # To work around this not being passed down from config-ml.in ->
331
   # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
332
   # append it here.  Only modify Makefiles that have just been created.
333
   #
334
   # Also, get rid of this simulated-VPATH thing that automake does.
335
   cat > vpsed << \_EOF
336
s!`test -f '$<' || echo '$(srcdir)/'`!!
337
_EOF
338
   for i in $SUBDIRS; do
339
    case $CONFIG_FILES in
340
     *${i}/Makefile*)
341
       #echo "Adding MULTISUBDIR to $i/Makefile"
342
       sed -f vpsed $i/Makefile > tmp
343
       grep '^MULTISUBDIR =' Makefile >> tmp
344
       mv tmp $i/Makefile
345
       ;;
346
    esac
347
   done
348
   rm vpsed
349
 fi
350
 (cd include && ${MAKE-make})
351
],
352
[
353
# Variables needed in config.status (file generation) which aren't already
354
# passed by autoconf.
355
SUBDIRS="$SUBDIRS"
356
])
357
 
358
dnl And this actually makes things happen:
359
AC_OUTPUT

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