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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libobjc/] [configure.ac] - Blame information for rev 14

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1 14 jlechner
# Process this file with autoconf to produce a configure script.
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#   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
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#   Free Software Foundation, Inc.
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#   Originally contributed by Dave Love (d.love@dl.ac.uk).
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#
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#This file is part of GCC.
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#
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#GCC is free software; you can redistribute it and/or modify
9
#it under the terms of the GNU General Public License as published by
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#the Free Software Foundation; either version 2, or (at your option)
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#any later version.
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#
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#GCC is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#GNU General Public License for more details.
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#
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#You should have received a copy of the GNU General Public License
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#along with GCC; see the file COPYING.  If not, write to
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#the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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#02110-1301, USA.
22
 
23
AC_PREREQ(2.59)
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AC_INIT(package-unused, version-unused,, libobjc)
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AC_CONFIG_SRCDIR([objc/objc.h])
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GCC_TOPLEV_SUBDIRS
27
 
28
# We need the following definitions because AC_PROG_LIBTOOL relies on them
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PACKAGE=libobjc
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# Version is pulled out to make it a bit easier to change using sed.
31
VERSION=1:0:0
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AC_SUBST(VERSION)
33
 
34
# This works around the fact that libtool configuration may change LD
35
# for this particular configuration, but some shells, instead of
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# keeping the changes in LD private, export them just because LD is
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# exported.
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ORIGINAL_LD_FOR_MULTILIBS=$LD
39
 
40
# -------
41
# Options
42
# -------
43
 
44
# Default to --enable-multilib
45
AC_ARG_ENABLE(multilib,
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  [  --enable-multilib       build hella library versions (default)],
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  [case "${enableval}" in
48
    yes) multilib=yes ;;
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    no)  multilib=no ;;
50
    *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
51
   esac],
52
  [multilib=yes])
53
 
54
# We use these options to decide which functions to include.
55
AC_ARG_WITH(target-subdir,
56
[  --with-target-subdir=SUBDIR
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                           configuring in a subdirectory])
58
AC_ARG_WITH(cross-host,
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[  --with-cross-host=HOST  configuring with a cross compiler])
60
 
61
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
62
AC_ARG_ENABLE(version-specific-runtime-libs,
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[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
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[case "$enableval" in
65
 yes) version_specific_libs=yes ;;
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 no)  version_specific_libs=no ;;
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 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
68
 esac],
69
[version_specific_libs=no])
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AC_MSG_RESULT($version_specific_libs)
71
 
72
AC_ARG_ENABLE(objc-gc,
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[  --enable-objc-gc       enable the use of Boehm's garbage collector with
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                          the GNU Objective-C runtime.],
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[case $enable_objc_gc in
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  no) OBJC_BOEHM_GC='' ;;
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  *) OBJC_BOEHM_GC=libobjc_gc.la ;;
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esac],
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[OBJC_BOEHM_GC=''])
80
AC_SUBST(OBJC_BOEHM_GC)
81
 
82
# -----------
83
# Directories
84
# -----------
85
 
86
# When building with srcdir == objdir, links to the source files will
87
# be created in directories within the target_subdir.  We have to
88
# adjust toplevel_srcdir accordingly, so that configure finds
89
# install-sh and other auxiliary files that live in the top-level
90
# source directory.
91
if test "${srcdir}" = "."; then
92
  if test -z "${with_target_subdir}"; then
93
    toprel=".."
94
  else
95
    if test "${with_target_subdir}" != "."; then
96
      toprel="${with_multisrctop}../.."
97
    else
98
      toprel="${with_multisrctop}.."
99
    fi
100
  fi
101
else
102
  toprel=".."
103
fi
104
AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
105
toplevel_srcdir=\${srcdir}/$toprel
106
AC_SUBST(toplevel_srcdir)
107
 
108
AC_CANONICAL_SYSTEM
109
ACX_NONCANONICAL_TARGET
110
 
111
# Export source directory.
112
# These need to be absolute paths, yet at the same time need to
113
# canonicalize only relative paths, because then amd will not unmount
114
# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
115
case $srcdir in
116
  [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
117
  *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
118
esac
119
AC_SUBST(glibcpp_srcdir)
120
 
121
# Calculate toolexeclibdir
122
# Also toolexecdir, though it's only used in toolexeclibdir
123
case ${version_specific_libs} in
124
  yes)
125
    # Need the gcc compiler version to know where to install libraries
126
    # and header files if --enable-version-specific-runtime-libs option
127
    # is selected.
128
    toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
129
    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
130
    ;;
131
  no)
132
    if test -n "$with_cross_host" &&
133
       test x"$with_cross_host" != x"no"; then
134
      # Install a library built with a cross compiler in tooldir, not libdir.
135
      toolexecdir='$(exec_prefix)/$(target_noncanonical)'
136
      toolexeclibdir='$(toolexecdir)/lib'
137
    else
138
      toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
139
      toolexeclibdir='$(libdir)'
140
    fi
141
    multi_os_directory=`$CC -print-multi-os-directory`
142
    case $multi_os_directory in
143
      .) ;; # Avoid trailing /.
144
      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
145
    esac
146
    ;;
147
esac
148
AC_SUBST(toolexecdir)
149
AC_SUBST(toolexeclibdir)
150
 
151
# Figure out if we want to name the include directory and the
152
#  library name changes differently.
153
includedirname=include
154
libext=
155
case "${host}" in
156
  *-darwin*)
157
    # Darwin is the only target so far that needs a different include directory.
158
    includedirname=include-gnu-runtime
159
    libext=-gnu
160
    ;;
161
esac
162
AC_SUBST(includedirname)
163
AC_SUBST(libext)
164
 
165
AC_CONFIG_HEADERS(config.h)
166
 
167
# --------
168
# Programs
169
# --------
170
 
171
GCC_NO_EXECUTABLES
172
 
173
# We must force CC to /not/ be a precious variable; otherwise
174
# the wrong, non-multilib-adjusted value will be used in multilibs.
175
# As a side effect, we have to subst CFLAGS ourselves.
176
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
177
m4_define([_AC_ARG_VAR_PRECIOUS],[])
178
AC_PROG_CC
179
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
180
 
181
# extra LD Flags which are required for targets
182
case "${host}" in
183
  *-darwin*)
184
    # Darwin needs -single_module when linking libobjc
185
    extra_ldflags_libobjc=-Wl,-single_module
186
    ;;
187
esac
188
AC_SUBST(extra_ldflags_libobjc)
189
 
190
AC_SUBST(CFLAGS)
191
 
192
AC_CHECK_TOOL(AS, as)
193
AC_CHECK_TOOL(AR, ar)
194
AC_CHECK_TOOL(RANLIB, ranlib, :)
195
AC_PROG_INSTALL
196
 
197
AM_MAINTAINER_MODE
198
 
199
# Enable Win32 DLL on MS Windows - FIXME
200
AC_LIBTOOL_WIN32_DLL
201
 
202
AC_PROG_LIBTOOL
203
 
204
AM_PROG_CC_C_O
205
 
206
AC_PROG_MAKE_SET
207
 
208
# -------
209
# Headers
210
# -------
211
 
212
# Sanity check for the cross-compilation case:
213
AC_CHECK_HEADER(stdio.h,:,
214
  [AC_MSG_ERROR([Can't find stdio.h.
215
You must have a usable C system for the target already installed, at least
216
including headers and, preferably, the library, before you can configure
217
the Objective C runtime system.  If necessary, install gcc now with
218
\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
219
 
220
AC_HEADER_STDC
221
 
222
AC_CHECK_HEADERS(sched.h)
223
 
224
# -----------
225
# Miscellanea
226
# -----------
227
 
228
AC_MSG_CHECKING([for thread model used by GCC])
229
target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
230
AC_MSG_RESULT([$target_thread_file])
231
 
232
if test $target_thread_file != single; then
233
  AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
234
        [Define if the compiler has a thread header that is non single.])
235
fi
236
 
237
 
238
AC_MSG_CHECKING([for exception model to use])
239
AC_LANG_PUSH(C)
240
AC_ARG_ENABLE(sjlj-exceptions,
241
  AS_HELP_STRING([--enable-sjlj-exceptions],
242
                 [force use of builtin_setjmp for exceptions]),
243
[:],
244
[dnl Botheration.  Now we've got to detect the exception model.
245
dnl Link tests against libgcc.a are problematic since -- at least
246
dnl as of this writing -- we've not been given proper -L bits for
247
dnl single-tree newlib and libgloss.
248
dnl
249
dnl This is what AC_TRY_COMPILE would do if it didn't delete the
250
dnl conftest files before we got a change to grep them first.
251
cat > conftest.$ac_ext << EOF
252
[#]line __oline__ "configure"
253
@interface Frob
254
@end
255
@implementation Frob
256
@end
257
int proc();
258
int foo()
259
{
260
  @try {
261
   return proc();
262
  }
263
  @catch (Frob* ex) {
264
    return 0;
265
  }
266
}
267
EOF
268
old_CFLAGS="$CFLAGS"
269
dnl work around that we don't have Objective-C support in autoconf
270
CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
271
if AC_TRY_EVAL(ac_compile); then
272
  if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
273
    enable_sjlj_exceptions=yes
274
  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
275
    enable_sjlj_exceptions=no
276
  fi
277
fi
278
CFLAGS="$old_CFLAGS"
279
rm -f conftest*])
280
if test x$enable_sjlj_exceptions = xyes; then
281
  AC_DEFINE(SJLJ_EXCEPTIONS, 1,
282
        [Define if the compiler is configured for setjmp/longjmp exceptions.])
283
  ac_exception_model_name=sjlj
284
elif test x$enable_sjlj_exceptions = xno; then
285
  ac_exception_model_name="call frame"
286
else
287
  AC_MSG_ERROR([unable to detect exception model])
288
fi
289
AC_LANG_POP(C)
290
AC_MSG_RESULT($ac_exception_model_name)
291
 
292
# ------
293
# Output
294
# ------
295
 
296
AC_CONFIG_FILES([Makefile])
297
 
298
AC_CONFIG_COMMANDS([default],
299
[[if test -n "$CONFIG_FILES"; then
300
  if test -n "${with_target_subdir}"; then
301
    # FIXME: We shouldn't need to set ac_file
302
    ac_file=Makefile
303
    LD="${ORIGINAL_LD_FOR_MULTILIBS}"
304
    . ${toplevel_srcdir}/config-ml.in
305
  fi
306
fi]],
307
[[srcdir=${srcdir}
308
host=${host}
309
target=${target}
310
with_target_subdir=${with_target_subdir}
311
with_multisubdir=${with_multisubdir}
312
ac_configure_args="--enable-multilib ${ac_configure_args}"
313
toplevel_srcdir=${toplevel_srcdir}
314
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
315
ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
316
]])
317
 
318
AC_OUTPUT

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