/Modules/_ctypes/libffi/configure.ac

  1dnl Process this with autoconf to create configure
  2#
  3# file from libffi - slightly patched for ctypes
  4#
  5
  6AC_PREREQ(2.59)
  7
  8AC_INIT([libffi], [3.0.5], [http://gcc.gnu.org/bugs.html])
  9AC_CONFIG_HEADERS([fficonfig.h])
 10
 11AC_CANONICAL_SYSTEM
 12target_alias=${target_alias-$host_alias}
 13
 14. ${srcdir}/configure.host
 15
 16AM_INIT_AUTOMAKE
 17
 18# The same as in boehm-gc and libstdc++. Have to borrow it from there.
 19# We must force CC to /not/ be precious variables; otherwise
 20# the wrong, non-multilib-adjusted value will be used in multilibs.
 21# As a side effect, we have to subst CFLAGS ourselves.
 22
 23m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
 24m4_define([_AC_ARG_VAR_PRECIOUS],[])
 25AC_PROG_CC
 26m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 27
 28AC_SUBST(CFLAGS)
 29
 30AM_PROG_AS
 31AM_PROG_CC_C_O
 32AC_PROG_LIBTOOL
 33
 34AM_MAINTAINER_MODE
 35
 36AC_CHECK_HEADERS(sys/mman.h)
 37AC_CHECK_FUNCS(mmap)
 38AC_FUNC_MMAP_BLACKLIST
 39
 40dnl The -no-testsuite modules omit the test subdir.
 41AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
 42
 43TARGETDIR="unknown"
 44case "$host" in
 45  alpha*-*-*)
 46	TARGET=ALPHA; TARGETDIR=alpha;
 47	# Support 128-bit long double, changable via command-line switch.
 48	HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
 49	;;
 50
 51  arm*-*-*)
 52	TARGET=ARM; TARGETDIR=arm
 53	;;
 54
 55  amd64-*-freebsd*)
 56	TARGET=X86_64; TARGETDIR=x86
 57  	;;
 58
 59  cris-*-*)
 60	TARGET=LIBFFI_CRIS; TARGETDIR=cris
 61	;;
 62
 63  frv-*-*)
 64	TARGET=FRV; TARGETDIR=frv
 65	;;
 66
 67  hppa*-*-linux* | parisc*-*-linux*)
 68	TARGET=PA_LINUX; TARGETDIR=pa
 69	;;
 70  hppa*64-*-hpux*)
 71	TARGET=PA64_HPUX; TARGETDIR=pa
 72	;;
 73  hppa*-*-hpux*)
 74	TARGET=PA_HPUX; TARGETDIR=pa
 75	;;
 76
 77  i386-*-freebsd* | i386-*-openbsd*)
 78	TARGET=X86_FREEBSD; TARGETDIR=x86
 79	;;
 80  i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
 81	TARGET=X86_WIN32; TARGETDIR=x86
 82	;;
 83  i?86-*-darwin*)
 84	TARGET=X86_DARWIN; TARGETDIR=x86
 85	;;
 86  i?86-*-solaris2.1[[0-9]]*)
 87	TARGET=X86_64; TARGETDIR=x86
 88	;;
 89  i*86-*-nto-qnx*) 
 90        TARGET=X86; TARGETDIR=x86
 91        ;;
 92  i?86-*-*)
 93	TARGET=X86; TARGETDIR=x86
 94	;;
 95
 96  ia64*-*-*)
 97	TARGET=IA64; TARGETDIR=ia64
 98	;;
 99
100  m32r*-*-*)
101	TARGET=M32R; TARGETDIR=m32r
102	;;
103
104  m68k-*-*)
105	TARGET=M68K; TARGETDIR=m68k
106	;;
107
108  mips-sgi-irix5.* | mips-sgi-irix6.*)
109	TARGET=MIPS_IRIX; TARGETDIR=mips
110	;;
111  mips*-*-linux*)
112	TARGET=MIPS_LINUX; TARGETDIR=mips
113	;;
114
115  powerpc*-*-linux* | powerpc-*-sysv*)
116	TARGET=POWERPC; TARGETDIR=powerpc
117	;;
118  powerpc-*-beos*)
119	TARGET=POWERPC; TARGETDIR=powerpc
120	;;
121  powerpc-*-darwin*)
122	TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
123	;;
124  powerpc-*-aix* | rs6000-*-aix*)
125	TARGET=POWERPC_AIX; TARGETDIR=powerpc
126	;;
127  powerpc-*-freebsd*)
128	TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
129	;;
130  powerpc*-*-rtems*)
131	TARGET=POWERPC; TARGETDIR=powerpc
132	;;
133
134  s390-*-* | s390x-*-*)
135	TARGET=S390; TARGETDIR=s390
136	;;
137
138  sh-*-* | sh[[34]]*-*-*)
139	TARGET=SH; TARGETDIR=sh
140	;;
141  sh64-*-* | sh5*-*-*)
142	TARGET=SH64; TARGETDIR=sh64
143	;;
144
145  sparc*-*-*)
146	TARGET=SPARC; TARGETDIR=sparc
147	;;
148
149  x86_64-*-darwin*)
150	TARGET=X86_DARWIN; TARGETDIR=x86
151	;;
152  x86_64-*-cygwin* | x86_64-*-mingw*)
153	;;
154  x86_64-*-*)
155	TARGET=X86_64; TARGETDIR=x86
156	;;
157esac
158
159AC_SUBST(AM_RUNTESTFLAGS)
160
161if test $TARGETDIR = unknown; then
162  AC_MSG_ERROR(["libffi has not been ported to $host."])
163fi
164
165AM_CONDITIONAL(MIPS,[expr x$TARGET : 'xMIPS' > /dev/null])
166AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
167AM_CONDITIONAL(X86, test x$TARGET = xX86)
168AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD)
169AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
170AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
171AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
172AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
173AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
174AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
175AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
176AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
177AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
178AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
179AM_CONDITIONAL(ARM, test x$TARGET = xARM)
180AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
181AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
182AM_CONDITIONAL(S390, test x$TARGET = xS390)
183AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
184AM_CONDITIONAL(SH, test x$TARGET = xSH)
185AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
186AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
187AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
188AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
189
190AC_HEADER_STDC
191AC_CHECK_FUNCS(memcpy)
192AC_FUNC_ALLOCA
193
194AC_CHECK_SIZEOF(double)
195AC_CHECK_SIZEOF(long double)
196
197# Also AC_SUBST this variable for ffi.h.
198if test -z "$HAVE_LONG_DOUBLE"; then
199  HAVE_LONG_DOUBLE=0
200  if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
201    if test $ac_cv_sizeof_long_double != 0; then
202      HAVE_LONG_DOUBLE=1
203      AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
204    fi
205  fi
206fi
207AC_SUBST(HAVE_LONG_DOUBLE)
208
209AC_C_BIGENDIAN
210
211AC_CACHE_CHECK([assembler .cfi pseudo-op support],
212    libffi_cv_as_cfi_pseudo_op, [
213    libffi_cv_as_cfi_pseudo_op=unknown
214    AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
215		   [libffi_cv_as_cfi_pseudo_op=yes],
216		   [libffi_cv_as_cfi_pseudo_op=no])
217])
218if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
219    AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
220	      [Define if your assembler supports .cfi_* directives.])
221fi
222
223if test x$TARGET = xSPARC; then
224    AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
225	libffi_cv_as_sparc_ua_pcrel, [
226	save_CFLAGS="$CFLAGS"
227	save_LDFLAGS="$LDFLAGS"
228	CFLAGS="$CFLAGS -fpic"
229	LDFLAGS="$LDFLAGS -shared"
230	AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
231		    [libffi_cv_as_sparc_ua_pcrel=yes],
232		    [libffi_cv_as_sparc_ua_pcrel=no])
233	CFLAGS="$save_CFLAGS"
234	LDFLAGS="$save_LDFLAGS"])
235    if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
236	AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
237		  [Define if your assembler and linker support unaligned PC relative relocs.])
238    fi
239
240    AC_CACHE_CHECK([assembler .register pseudo-op support],
241       libffi_cv_as_register_pseudo_op, [
242       libffi_cv_as_register_pseudo_op=unknown
243       # Check if we have .register
244       AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
245		       [libffi_cv_as_register_pseudo_op=yes],
246		       [libffi_cv_as_register_pseudo_op=no])
247    ])
248    if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
249       AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
250	       [Define if your assembler supports .register.])
251    fi
252fi
253
254AC_CACHE_CHECK([whether .eh_frame section should be read-only],
255    libffi_cv_ro_eh_frame, [
256	libffi_cv_ro_eh_frame=no
257	echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
258	if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
259	    if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
260		libffi_cv_ro_eh_frame=yes
261	    elif grep '.section.*eh_frame.*#alloc' conftest.c \
262		 | grep -v '#write' > /dev/null; then
263		libffi_cv_ro_eh_frame=yes
264	    fi
265	fi
266	rm -f conftest.*
267    ])
268if test "x$libffi_cv_ro_eh_frame" = xyes; then
269    AC_DEFINE(HAVE_RO_EH_FRAME, 1,
270	      [Define if .eh_frame sections should be read-only.])
271    AC_DEFINE(EH_FRAME_FLAGS, "a",
272	      [Define to the flags needed for the .section .eh_frame directive.])
273else
274    AC_DEFINE(EH_FRAME_FLAGS, "aw",
275	      [Define to the flags needed for the .section .eh_frame directive.])
276fi
277
278AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
279    libffi_cv_hidden_visibility_attribute, [
280	echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
281	libffi_cv_hidden_visibility_attribute=no
282	if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
283	    if grep '\.hidden.*foo' conftest.s >/dev/null; then
284		libffi_cv_hidden_visibility_attribute=yes
285	    fi
286	fi
287	rm -f conftest.*
288    ])
289if test $libffi_cv_hidden_visibility_attribute = yes; then
290    AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
291	      [Define if __attribute__((visibility("hidden"))) is supported.])
292fi
293
294AH_BOTTOM([
295#ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
296#ifdef LIBFFI_ASM
297#define FFI_HIDDEN(name) .hidden name
298#else
299#define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
300#endif
301#else
302#ifdef LIBFFI_ASM
303#define FFI_HIDDEN(name)
304#else
305#define FFI_HIDDEN
306#endif
307#endif
308])
309
310AC_SUBST(TARGET)
311AC_SUBST(TARGETDIR)
312
313AC_SUBST(SHELL)
314
315AC_ARG_ENABLE(debug,
316[  --enable-debug          debugging mode],
317  if test "$enable_debug" = "yes"; then
318    AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
319  fi)
320
321AC_ARG_ENABLE(structs,
322[  --disable-structs       omit code for struct support],
323  if test "$enable_structs" = "no"; then
324    AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
325  fi)
326
327AC_ARG_ENABLE(raw-api,
328[  --disable-raw-api       make the raw api unavailable],
329  if test "$enable_raw_api" = "no"; then
330    AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
331  fi)
332
333AC_ARG_ENABLE(purify-safety,
334[  --enable-purify-safety  purify-safe mode],
335  if test "$enable_purify_safety" = "yes"; then
336    AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
337  fi)
338
339if test -n "$with_cross_host" &&
340   test x"$with_cross_host" != x"no"; then
341  toolexecdir='$(exec_prefix)/$(target_alias)'
342  toolexeclibdir='$(toolexecdir)/lib'
343else
344  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
345  toolexeclibdir='$(libdir)'
346fi
347multi_os_directory=`$CC -print-multi-os-directory`
348case $multi_os_directory in
349  .) ;; # Avoid trailing /.
350  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
351esac
352AC_SUBST(toolexecdir)
353AC_SUBST(toolexeclibdir)
354
355if test "${multilib}" = "yes"; then
356  multilib_arg="--enable-multilib"
357else
358  multilib_arg=
359fi
360
361AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
362AC_CONFIG_COMMANDS(src, [
363test -d src || mkdir src
364test -d src/$TARGETDIR || mkdir src/$TARGETDIR
365], [TARGETDIR="$TARGETDIR"])
366
367AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
368
369AC_CONFIG_FILES(include/ffi.h)
370
371AC_CONFIG_LINKS(include/ffi_common.h:include/ffi_common.h)
372
373AC_CONFIG_FILES(fficonfig.py)
374
375AC_OUTPUT