[gcc.git] / libffi / configure.ac

dnl Process this with autoconf to create configure

AC_PREREQ(2.59)

AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])
AC_CONFIG_HEADERS([fficonfig.h])

AM_ENABLE_MULTILIB(, ..)

AC_CANONICAL_SYSTEM
target_alias=${target_alias-$host_alias}

. ${srcdir}/configure.host

AM_INIT_AUTOMAKE

# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.

m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

AC_SUBST(CFLAGS)

AM_PROG_AS
AM_PROG_CC_C_O
AC_PROG_LIBTOOL

AM_MAINTAINER_MODE

AC_CHECK_HEADERS(sys/mman.h)
AC_CHECK_FUNCS(mmap)
AC_FUNC_MMAP_BLACKLIST

dnl The -no-testsuite modules omit the test subdir.
AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)

TARGETDIR="unknown"
case "$host" in
  alpha*-*-*)
	TARGET=ALPHA; TARGETDIR=alpha;
	# Support 128-bit long double, changable via command-line switch.
	HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
	;;

  arm*-*-*)
	TARGET=ARM; TARGETDIR=arm
	;;

  cris-*-*)
	TARGET=LIBFFI_CRIS; TARGETDIR=cris
	;;

  frv-*-*)
	TARGET=FRV; TARGETDIR=frv
	;;

  hppa*-*-linux* | parisc*-*-linux*)
	TARGET=PA_LINUX; TARGETDIR=pa
	;;
  hppa*64-*-hpux*)
	TARGET=PA64_HPUX; TARGETDIR=pa
	;;
  hppa*-*-hpux*)
	TARGET=PA_HPUX; TARGETDIR=pa
	;;

  i?86-win32* | i?86-*-cygwin* | i?86-*-mingw*)
	TARGET=X86_WIN32; TARGETDIR=x86
	;;
  i?86-*-darwin*)
	TARGET=X86_DARWIN; TARGETDIR=x86
	;;
  i?86-*-solaris2.1[[0-9]]*)
	TARGET=X86_64; TARGETDIR=x86
	;;
  i?86-*-*)
	TARGET=X86; TARGETDIR=x86
	;;

  ia64*-*-*)
	TARGET=IA64; TARGETDIR=ia64
	;;

  m32r*-*-*)
	TARGET=M32R; TARGETDIR=m32r
	;;

  m68k-*-*)
	TARGET=M68K; TARGETDIR=m68k
	;;

  mips-sgi-irix5.* | mips-sgi-irix6.*)
	TARGET=MIPS; TARGETDIR=mips
	;;
  mips*-*-linux*)
	TARGET=MIPS; TARGETDIR=mips
	;;

  powerpc*-*-linux* | powerpc-*-sysv*)
	TARGET=POWERPC; TARGETDIR=powerpc
	;;
  powerpc-*-beos*)
	TARGET=POWERPC; TARGETDIR=powerpc
	;;
  powerpc-*-darwin*)
	TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
	;;
  powerpc-*-aix* | rs6000-*-aix*)
	TARGET=POWERPC_AIX; TARGETDIR=powerpc
	;;
  powerpc-*-freebsd*)
	TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
	;;
  powerpc*-*-rtems*)
	TARGET=POWERPC; TARGETDIR=powerpc
	;;

  s390-*-* | s390x-*-*)
	TARGET=S390; TARGETDIR=s390
	;;

  sh-*-* | sh[[34]]*-*-*)
	TARGET=SH; TARGETDIR=sh
	;;
  sh64-*-* | sh5*-*-*)
	TARGET=SH64; TARGETDIR=sh64
	;;

  sparc*-*-*)
	TARGET=SPARC; TARGETDIR=sparc
	;;

  x86_64-*-darwin*)
	TARGET=X86_DARWIN; TARGETDIR=x86
	;;
  x86_64-*-cygwin* | x86_64-*-mingw*)
	;;
  x86_64-*-*)
	TARGET=X86_64; TARGETDIR=x86
	;;
esac

AC_SUBST(AM_RUNTESTFLAGS)

if test $TARGETDIR = unknown; then
  AC_MSG_ERROR(["libffi has not been ported to $host."])
fi

AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
AM_CONDITIONAL(X86, test x$TARGET = xX86)
AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
AM_CONDITIONAL(ARM, test x$TARGET = xARM)
AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
AM_CONDITIONAL(S390, test x$TARGET = xS390)
AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
AM_CONDITIONAL(SH, test x$TARGET = xSH)
AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)

AC_HEADER_STDC
AC_CHECK_FUNCS(memcpy)
AC_FUNC_ALLOCA

AC_CHECK_SIZEOF(double)
AC_CHECK_SIZEOF(long double)

# Also AC_SUBST this variable for ffi.h.
if test -z "$HAVE_LONG_DOUBLE"; then
  HAVE_LONG_DOUBLE=0
  if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
    if test $ac_cv_sizeof_long_double != 0; then
      HAVE_LONG_DOUBLE=1
      AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
    fi
  fi
fi
AC_SUBST(HAVE_LONG_DOUBLE)

AC_C_BIGENDIAN

AC_CACHE_CHECK([assembler .cfi pseudo-op support],
    libffi_cv_as_cfi_pseudo_op, [
    libffi_cv_as_cfi_pseudo_op=unknown
    AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
		   [libffi_cv_as_cfi_pseudo_op=yes],
		   [libffi_cv_as_cfi_pseudo_op=no])
])
if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
    AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
	      [Define if your assembler supports .cfi_* directives.])
fi

if test x$TARGET = xSPARC; then
    AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
	libffi_cv_as_sparc_ua_pcrel, [
	save_CFLAGS="$CFLAGS"
	save_LDFLAGS="$LDFLAGS"
	CFLAGS="$CFLAGS -fpic"
	LDFLAGS="$LDFLAGS -shared"
	AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
		    [libffi_cv_as_sparc_ua_pcrel=yes],
		    [libffi_cv_as_sparc_ua_pcrel=no])
	CFLAGS="$save_CFLAGS"
	LDFLAGS="$save_LDFLAGS"])
    if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
	AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
		  [Define if your assembler and linker support unaligned PC relative relocs.])
    fi

    AC_CACHE_CHECK([assembler .register pseudo-op support],
       libffi_cv_as_register_pseudo_op, [
       libffi_cv_as_register_pseudo_op=unknown
       # Check if we have .register
       AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
		       [libffi_cv_as_register_pseudo_op=yes],
		       [libffi_cv_as_register_pseudo_op=no])
    ])
    if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
       AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
	       [Define if your assembler supports .register.])
    fi
fi

AC_CACHE_CHECK([whether .eh_frame section should be read-only],
    libffi_cv_ro_eh_frame, [
	libffi_cv_ro_eh_frame=no
	echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
	if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
	    if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
		libffi_cv_ro_eh_frame=yes
	    elif grep '.section.*eh_frame.*#alloc' conftest.c \
		 | grep -v '#write' > /dev/null; then
		libffi_cv_ro_eh_frame=yes
	    fi
	fi
	rm -f conftest.*
    ])
if test "x$libffi_cv_ro_eh_frame" = xyes; then
    AC_DEFINE(HAVE_RO_EH_FRAME, 1,
	      [Define if .eh_frame sections should be read-only.])
    AC_DEFINE(EH_FRAME_FLAGS, "a",
	      [Define to the flags needed for the .section .eh_frame directive.])
else
    AC_DEFINE(EH_FRAME_FLAGS, "aw",
	      [Define to the flags needed for the .section .eh_frame directive.])
fi

AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
    libffi_cv_hidden_visibility_attribute, [
	echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
	libffi_cv_hidden_visibility_attribute=no
	if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
	    if grep '\.hidden.*foo' conftest.s >/dev/null; then
		libffi_cv_hidden_visibility_attribute=yes
	    fi
	fi
	rm -f conftest.*
    ])
if test $libffi_cv_hidden_visibility_attribute = yes; then
    AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
	      [Define if __attribute__((visibility("hidden"))) is supported.])
fi

AH_BOTTOM([
#ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
#ifdef LIBFFI_ASM
#define FFI_HIDDEN(name) .hidden name
#else
#define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
#endif
#else
#ifdef LIBFFI_ASM
#define FFI_HIDDEN(name)
#else
#define FFI_HIDDEN
#endif
#endif
])

AC_SUBST(TARGET)
AC_SUBST(TARGETDIR)

AC_SUBST(SHELL)

AC_ARG_ENABLE(debug,
[  --enable-debug          debugging mode],
  if test "$enable_debug" = "yes"; then
    AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
  fi)

AC_ARG_ENABLE(structs,
[  --disable-structs       omit code for struct support],
  if test "$enable_structs" = "no"; then
    AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
  fi)

AC_ARG_ENABLE(raw-api,
[  --disable-raw-api       make the raw api unavailable],
  if test "$enable_raw_api" = "no"; then
    AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
  fi)

AC_ARG_ENABLE(purify-safety,
[  --enable-purify-safety  purify-safe mode],
  if test "$enable_purify_safety" = "yes"; then
    AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
  fi)

if test -n "$with_cross_host" &&
   test x"$with_cross_host" != x"no"; then
  toolexecdir='$(exec_prefix)/$(target_alias)'
  toolexeclibdir='$(toolexecdir)/lib'
else
  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
  toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
  .) ;; # Avoid trailing /.
  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)

if test "${multilib}" = "yes"; then
  multilib_arg="--enable-multilib"
else
  multilib_arg=
fi

AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
AC_CONFIG_COMMANDS(src, [
test -d src || mkdir src
test -d src/$TARGETDIR || mkdir src/$TARGETDIR
], [TARGETDIR="$TARGETDIR"])

AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)

AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)

AC_OUTPUT
Commit	Line	Data
63e5e3e0	1	dnl Process this with autoconf to create configure
3ed8e5b6 AT	2
	3	AC_PREREQ(2.59)
	4
	5	AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])
	6	AC_CONFIG_HEADERS([fficonfig.h])
	7
	8	AM_ENABLE_MULTILIB(, ..)
3c18f2d1	9
bbf3057b AT	10	AC_CANONICAL_SYSTEM
bbf3057b AT	11	target_alias=${target_alias-$host_alias}
63e5e3e0	12
88d8c771 AG	13	. ${srcdir}/configure.host
88d8c771 AG	14
3ed8e5b6	15	AM_INIT_AUTOMAKE
63e5e3e0	16
3ed8e5b6 AT	17	# The same as in boehm-gc and libstdc++. Have to borrow it from there.
	18	# We must force CC to /not/ be precious variables; otherwise
	19	# the wrong, non-multilib-adjusted value will be used in multilibs.
	20	# As a side effect, we have to subst CFLAGS ourselves.
63e5e3e0	21
3ed8e5b6 AT	22	m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
3ed8e5b6 AT	23	m4_define([_AC_ARG_VAR_PRECIOUS],[])
63e5e3e0	24	AC_PROG_CC
3ed8e5b6	25	m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
bbf3057b	26
3ed8e5b6 AT	27	AC_SUBST(CFLAGS)
	28
	29	AM_PROG_AS
	30	AM_PROG_CC_C_O
63e5e3e0 AG	31	AC_PROG_LIBTOOL
63e5e3e0 AG	32
3ed8e5b6 AT	33	AM_MAINTAINER_MODE
3ed8e5b6 AT	34
c9b93377 JB	35	AC_CHECK_HEADERS(sys/mman.h)
c9b93377 JB	36	AC_CHECK_FUNCS(mmap)
5196736e AJ	37	AC_FUNC_MMAP_BLACKLIST
5196736e AJ	38
bbf3057b AT	39	dnl The -no-testsuite modules omit the test subdir.
	40	AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
	41
63e5e3e0 AG	42	TARGETDIR="unknown"
63e5e3e0 AG	43	case "$host" in
bf8da5fc RH	44	alpha--*)
	45	TARGET=ALPHA; TARGETDIR=alpha;
	46	# Support 128-bit long double, changable via command-line switch.
	47	HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)'
	48	;;
	49
	50	arm--*)
	51	TARGET=ARM; TARGETDIR=arm
	52	;;
	53
	54	cris--)
	55	TARGET=LIBFFI_CRIS; TARGETDIR=cris
	56	;;
	57
	58	frv--)
	59	TARGET=FRV; TARGETDIR=frv
	60	;;
	61
	62	hppa--linux* \| parisc--linux*)
	63	TARGET=PA_LINUX; TARGETDIR=pa
	64	;;
	65	hppa64--hpux*)
	66	TARGET=PA64_HPUX; TARGETDIR=pa
	67	;;
	68	hppa--hpux*)
	69	TARGET=PA_HPUX; TARGETDIR=pa
	70	;;
	71
	72	i?86-win32* \| i?86--cygwin \| i?86--mingw)
	73	TARGET=X86_WIN32; TARGETDIR=x86
	74	;;
	75	i?86--darwin)
	76	TARGET=X86_DARWIN; TARGETDIR=x86
	77	;;
04a49983 RO	78	i?86--solaris2.1[[0-9]])
	79	TARGET=X86_64; TARGETDIR=x86
	80	;;
bf8da5fc RH	81	i?86--)
	82	TARGET=X86; TARGETDIR=x86
	83	;;
	84
	85	ia64--*)
	86	TARGET=IA64; TARGETDIR=ia64
	87	;;
	88
	89	m32r--*)
	90	TARGET=M32R; TARGETDIR=m32r
	91	;;
	92
	93	m68k--)
	94	TARGET=M68K; TARGETDIR=m68k
	95	;;
	96
bf8da5fc	97	mips-sgi-irix5.* \| mips-sgi-irix6.*)
8d5c5e35	98	TARGET=MIPS; TARGETDIR=mips
bf8da5fc RH	99	;;
bf8da5fc RH	100	mips--linux*)
8d5c5e35	101	TARGET=MIPS; TARGETDIR=mips
bf8da5fc RH	102	;;
	103
	104	powerpc--linux* \| powerpc--sysv)
	105	TARGET=POWERPC; TARGETDIR=powerpc
	106	;;
	107	powerpc--beos)
	108	TARGET=POWERPC; TARGETDIR=powerpc
	109	;;
	110	powerpc--darwin)
	111	TARGET=POWERPC_DARWIN; TARGETDIR=powerpc
	112	;;
	113	powerpc--aix \| rs6000--aix)
	114	TARGET=POWERPC_AIX; TARGETDIR=powerpc
	115	;;
	116	powerpc--freebsd)
	117	TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
	118	;;
	119	powerpc--rtems*)
	120	TARGET=POWERPC; TARGETDIR=powerpc
	121	;;
	122
	123	s390-- \| s390x--)
	124	TARGET=S390; TARGETDIR=s390
	125	;;
	126
	127	sh-- \| sh[[34]]--*)
	128	TARGET=SH; TARGETDIR=sh
	129	;;
	130	sh64-- \| sh5--*)
	131	TARGET=SH64; TARGETDIR=sh64
	132	;;
	133
	134	sparc--*)
	135	TARGET=SPARC; TARGETDIR=sparc
	136	;;
	137
	138	x86_64--darwin)
	139	TARGET=X86_DARWIN; TARGETDIR=x86
	140	;;
	141	x86_64--cygwin \| x86_64--mingw)
	142	;;
	143	x86_64--)
	144	TARGET=X86_64; TARGETDIR=x86
	145	;;
63e5e3e0 AG	146	esac
63e5e3e0 AG	147
bbf3057b AT	148	AC_SUBST(AM_RUNTESTFLAGS)
bbf3057b AT	149
63e5e3e0	150	if test $TARGETDIR = unknown; then
3ed8e5b6	151	AC_MSG_ERROR(["libffi has not been ported to $host."])
63e5e3e0 AG	152	fi
63e5e3e0 AG	153
8d5c5e35	154	AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
63e5e3e0 AG	155	AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
63e5e3e0 AG	156	AM_CONDITIONAL(X86, test x$TARGET = xX86)
d6c4152a	157	AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
a3bd50cc	158	AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
63e5e3e0	159	AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
dc5de370	160	AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
a472e9d4	161	AM_CONDITIONAL(M32R, test x$TARGET = xM32R)
63e5e3e0 AG	162	AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
63e5e3e0 AG	163	AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
2f4006f8	164	AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
3c017635	165	AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
97067642	166	AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD)
63e5e3e0	167	AM_CONDITIONAL(ARM, test x$TARGET = xARM)
614348bb	168	AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS)
88d8c771	169	AM_CONDITIONAL(FRV, test x$TARGET = xFRV)
22bcf65c	170	AM_CONDITIONAL(S390, test x$TARGET = xS390)
c94974ca	171	AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
ddebdfeb	172	AM_CONDITIONAL(SH, test x$TARGET = xSH)
e860ed6d	173	AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
e6c300ef JDA	174	AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX)
	175	AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX)
	176	AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX)
63e5e3e0 AG	177
	178	AC_HEADER_STDC
	179	AC_CHECK_FUNCS(memcpy)
	180	AC_FUNC_ALLOCA
	181
a097ef55 KC	182	AC_CHECK_SIZEOF(double)
a097ef55 KC	183	AC_CHECK_SIZEOF(long double)
e2f2e70a	184
1450eb7a	185	# Also AC_SUBST this variable for ffi.h.
bf8da5fc RH	186	if test -z "$HAVE_LONG_DOUBLE"; then
	187	HAVE_LONG_DOUBLE=0
	188	if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
	189	if test $ac_cv_sizeof_long_double != 0; then
	190	HAVE_LONG_DOUBLE=1
	191	AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
	192	fi
1450eb7a AT	193	fi
	194	fi
	195	AC_SUBST(HAVE_LONG_DOUBLE)
	196
a097ef55	197	AC_C_BIGENDIAN
63e5e3e0	198
e6fbf387 RZ	199	AC_CACHE_CHECK([assembler .cfi pseudo-op support],
	200	libffi_cv_as_cfi_pseudo_op, [
	201	libffi_cv_as_cfi_pseudo_op=unknown
	202	AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],,
	203	[libffi_cv_as_cfi_pseudo_op=yes],
	204	[libffi_cv_as_cfi_pseudo_op=no])
	205	])
	206	if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then
	207	AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1,
	208	[Define if your assembler supports .cfi_* directives.])
	209	fi
	210
189ab118	211	if test x$TARGET = xSPARC; then
5d84cf0b JJ	212	AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
	213	libffi_cv_as_sparc_ua_pcrel, [
	214	save_CFLAGS="$CFLAGS"
	215	save_LDFLAGS="$LDFLAGS"
	216	CFLAGS="$CFLAGS -fpic"
	217	LDFLAGS="$LDFLAGS -shared"
	218	AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
	219	[libffi_cv_as_sparc_ua_pcrel=yes],
	220	[libffi_cv_as_sparc_ua_pcrel=no])
	221	CFLAGS="$save_CFLAGS"
	222	LDFLAGS="$save_LDFLAGS"])
	223	if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
	224	AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
	225	[Define if your assembler and linker support unaligned PC relative relocs.])
	226	fi
bd19c9f4 JS	227
	228	AC_CACHE_CHECK([assembler .register pseudo-op support],
	229	libffi_cv_as_register_pseudo_op, [
	230	libffi_cv_as_register_pseudo_op=unknown
	231	# Check if we have .register
	232	AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
3ed8e5b6 AT	233	[libffi_cv_as_register_pseudo_op=yes],
3ed8e5b6 AT	234	[libffi_cv_as_register_pseudo_op=no])
bd19c9f4 JS	235	])
	236	if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
	237	AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3ed8e5b6	238	[Define if your assembler supports .register.])
bd19c9f4	239	fi
5d84cf0b JJ	240	fi
5d84cf0b JJ	241
a733b15e JJ	242	AC_CACHE_CHECK([whether .eh_frame section should be read-only],
	243	libffi_cv_ro_eh_frame, [
	244	libffi_cv_ro_eh_frame=no
	245	echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
	246	if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
	247	if grep '.section.eh_frame."a"' conftest.s > /dev/null; then
	248	libffi_cv_ro_eh_frame=yes
	249	elif grep '.section.eh_frame.#alloc' conftest.c \
	250	\| grep -v '#write' > /dev/null; then
	251	libffi_cv_ro_eh_frame=yes
	252	fi
	253	fi
	254	rm -f conftest.*
	255	])
	256	if test "x$libffi_cv_ro_eh_frame" = xyes; then
	257	AC_DEFINE(HAVE_RO_EH_FRAME, 1,
	258	[Define if .eh_frame sections should be read-only.])
1450eb7a AT	259	AC_DEFINE(EH_FRAME_FLAGS, "a",
	260	[Define to the flags needed for the .section .eh_frame directive.])
	261	else
	262	AC_DEFINE(EH_FRAME_FLAGS, "aw",
	263	[Define to the flags needed for the .section .eh_frame directive.])
a733b15e JJ	264	fi
a733b15e JJ	265
8a42356f JJ	266	AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
	267	libffi_cv_hidden_visibility_attribute, [
	268	echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
	269	libffi_cv_hidden_visibility_attribute=no
	270	if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
	271	if grep '\.hidden.*foo' conftest.s >/dev/null; then
	272	libffi_cv_hidden_visibility_attribute=yes
	273	fi
	274	fi
	275	rm -f conftest.*
	276	])
	277	if test $libffi_cv_hidden_visibility_attribute = yes; then
	278	AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1,
	279	[Define if __attribute__((visibility("hidden"))) is supported.])
	280	fi
	281
	282	AH_BOTTOM([
	283	#ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
	284	#ifdef LIBFFI_ASM
	285	#define FFI_HIDDEN(name) .hidden name
	286	#else
	287	#define FFI_HIDDEN __attribute__ ((visibility ("hidden")))
	288	#endif
	289	#else
	290	#ifdef LIBFFI_ASM
	291	#define FFI_HIDDEN(name)
	292	#else
	293	#define FFI_HIDDEN
	294	#endif
	295	#endif
	296	])
	297
63e5e3e0 AG	298	AC_SUBST(TARGET)
	299	AC_SUBST(TARGETDIR)
	300
	301	AC_SUBST(SHELL)
	302
7d45b968 JS	303	AC_ARG_ENABLE(debug,
	304	[ --enable-debug debugging mode],
	305	if test "$enable_debug" = "yes"; then
1450eb7a	306	AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
7d45b968 JS	307	fi)
	308
	309	AC_ARG_ENABLE(structs,
	310	[ --disable-structs omit code for struct support],
	311	if test "$enable_structs" = "no"; then
1450eb7a	312	AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
7d45b968 JS	313	fi)
	314
	315	AC_ARG_ENABLE(raw-api,
	316	[ --disable-raw-api make the raw api unavailable],
	317	if test "$enable_raw_api" = "no"; then
1450eb7a	318	AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
7d45b968	319	fi)
63e5e3e0 AG	320
63e5e3e0 AG	321	AC_ARG_ENABLE(purify-safety,
7d45b968 JS	322	[ --enable-purify-safety purify-safe mode],
7d45b968 JS	323	if test "$enable_purify_safety" = "yes"; then
1450eb7a	324	AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
7d45b968	325	fi)
0721f64e	326
0e292c01 AO	327	if test -n "$with_cross_host" &&
	328	test x"$with_cross_host" != x"no"; then
	329	toolexecdir='$(exec_prefix)/$(target_alias)'
	330	toolexeclibdir='$(toolexecdir)/lib'
	331	else
	332	toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
	333	toolexeclibdir='$(libdir)'
	334	fi
ff8b9ca8 AS	335	multi_os_directory=`$CC -print-multi-os-directory`
	336	case $multi_os_directory in
	337	.) ;; # Avoid trailing /.
	338	*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
	339	esac
0e292c01 AO	340	AC_SUBST(toolexecdir)
0e292c01 AO	341	AC_SUBST(toolexeclibdir)
63e5e3e0	342
3c18f2d1 TT	343	if test "${multilib}" = "yes"; then
	344	multilib_arg="--enable-multilib"
	345	else
	346	multilib_arg=
	347	fi
	348
3ed8e5b6 AT	349	AC_CONFIG_COMMANDS(include, [test -d include \|\| mkdir include])
3ed8e5b6 AT	350	AC_CONFIG_COMMANDS(src, [
3b905056	351	test -d src \|\| mkdir src
3ed8e5b6 AT	352	test -d src/$TARGETDIR \|\| mkdir src/$TARGETDIR
	353	], [TARGETDIR="$TARGETDIR"])
	354
	355	AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
	356
	357	AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)
1450eb7a	358
3ed8e5b6	359	AC_OUTPUT