1dnl Process this with autoconf to create configure
2
3AC_PREREQ(2.59)
4
5AC_INIT([libffi], [2.1], [http://gcc.gnu.org/bugs.html])
6AC_CONFIG_HEADERS([fficonfig.h])
7
8AM_ENABLE_MULTILIB(, .., .)
9if test a = b; then
10   # This is for automake
11   AC_CONFIG_AUX_DIR([..], [.])
12else
13   # and this is for autoconf
14   AC_CONFIG_AUX_DIRS(${multi_basedir})
15 fi
16
17AC_CANONICAL_SYSTEM
18target_alias=${target_alias-$host_alias}
19
20AM_INIT_AUTOMAKE
21
22# The same as in boehm-gc and libstdc++. Have to borrow it from there.
23# We must force CC to /not/ be precious variables; otherwise
24# the wrong, non-multilib-adjusted value will be used in multilibs.
25# As a side effect, we have to subst CFLAGS ourselves.
26
27m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
28m4_define([_AC_ARG_VAR_PRECIOUS],[])
29AC_PROG_CC
30m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
31
32AC_SUBST(CFLAGS)
33
34AM_PROG_AS
35AM_PROG_CC_C_O
36AC_PROG_LIBTOOL
37
38AM_MAINTAINER_MODE
39
40AC_CHECK_HEADERS(sys/mman.h)
41AC_CHECK_FUNCS(mmap)
42AC_FUNC_MMAP_BLACKLIST
43
44dnl The -no-testsuite modules omit the test subdir.
45AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
46
47TARGETDIR="unknown"
48case "$host" in
49i*86-*-darwin*) TARGET=X86_DARWIN; TARGETDIR=x86;;
50i*86-*-linux*) TARGET=X86; TARGETDIR=x86;;
51i*86-*-solaris*) TARGET=X86; TARGETDIR=x86;;
52i*86-*-beos*) TARGET=X86; TARGETDIR=x86;;
53i*86-*-freebsd*) TARGET=X86; TARGETDIR=x86;;
54i*86-*-netbsdelf*) TARGET=X86; TARGETDIR=x86;;
55i*86-*-win32*) TARGET=X86_WIN32; TARGETDIR=x86;;
56i*86-*-cygwin*) TARGET=X86_WIN32; TARGETDIR=x86;;
57i*86-*-mingw*) TARGET=X86_WIN32; TARGETDIR=x86;;
58sparc-sun-4*) TARGET=SPARC; TARGETDIR=sparc;;
59sparc*-sun-*) TARGET=SPARC; TARGETDIR=sparc;;
60sparc-*-linux* | sparc-*-netbsdelf*) TARGET=SPARC; TARGETDIR=sparc;;
61sparc64-*-linux* | sparc64-*-netbsd*) TARGET=SPARC; TARGETDIR=sparc;;
62alpha*-*-linux* | alpha*-*-osf* | alpha*-*-freebsd* | alpha*-*-netbsd*) TARGET=ALPHA; TARGETDIR=alpha;;
63ia64*-*-*) TARGET=IA64; TARGETDIR=ia64;;
64m68k-*-linux*) TARGET=M68K; TARGETDIR=m68k;;
65mips64*-*);;
66mips-sgi-irix5.* | mips-sgi-irix6.*) TARGET=MIPS_IRIX; TARGETDIR=mips;;
67mips*-*-linux*) TARGET=MIPS_LINUX; TARGETDIR=mips;;
68powerpc*-*-linux* | powerpc-*-sysv*) TARGET=POWERPC; TARGETDIR=powerpc;;
69powerpc-*-beos*) TARGET=POWERPC; TARGETDIR=powerpc;;
70powerpc-*-darwin*) TARGET=POWERPC_DARWIN; TARGETDIR=powerpc;;
71powerpc-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
72rs6000-*-aix*) TARGET=POWERPC_AIX; TARGETDIR=powerpc;;
73arm*-*-linux-*) TARGET=ARM; TARGETDIR=arm;;
74arm*-*-netbsdelf*) TARGET=ARM; TARGETDIR=arm;;
75s390-*-linux-*) TARGET=S390; TARGETDIR=s390;;
76s390x-*-linux-*) TARGET=S390; TARGETDIR=s390;;
77x86_64-*-linux*) TARGET=X86_64; TARGETDIR=x86;;
78sh-*-linux* | sh[[34]]*-*-linux*) TARGET=SH; TARGETDIR=sh;;
79sh64-*-linux* | sh5*-*-linux*) TARGET=SH64; TARGETDIR=sh64;;
80hppa-*-linux* | parisc-*-linux*) TARGET=PA; TARGETDIR=pa;;
81esac
82
83AC_SUBST(AM_RUNTESTFLAGS)
84
85if test $TARGETDIR = unknown; then
86  AC_MSG_ERROR(["libffi has not been ported to $host."])
87fi
88
89AM_CONDITIONAL(MIPS_IRIX, test x$TARGET = xMIPS_IRIX)
90AM_CONDITIONAL(MIPS_LINUX, test x$TARGET = xMIPS_LINUX)
91AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
92AM_CONDITIONAL(X86, test x$TARGET = xX86)
93AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32)
94AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN)
95AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
96AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
97AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
98AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
99AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX)
100AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN)
101AM_CONDITIONAL(ARM, test x$TARGET = xARM)
102AM_CONDITIONAL(S390, test x$TARGET = xS390)
103AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64)
104AM_CONDITIONAL(SH, test x$TARGET = xSH)
105AM_CONDITIONAL(SH64, test x$TARGET = xSH64)
106AM_CONDITIONAL(PA, test x$TARGET = xPA)
107
108case x$TARGET in
109  xMIPS*) TARGET=MIPS ;;
110  *) ;;
111esac
112
113AC_HEADER_STDC
114AC_CHECK_FUNCS(memcpy)
115AC_FUNC_ALLOCA
116
117AC_COMPILE_CHECK_SIZEOF(double)
118AC_COMPILE_CHECK_SIZEOF(long double)
119
120# Also AC_SUBST this variable for ffi.h.
121HAVE_LONG_DOUBLE=0
122if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
123  if test $ac_cv_sizeof_long_double != 0; then
124    HAVE_LONG_DOUBLE=1
125    AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
126  fi
127fi
128AC_SUBST(HAVE_LONG_DOUBLE)
129
130AC_C_BIGENDIAN_CROSS
131
132if test x$TARGET = xSPARC; then
133    AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
134	libffi_cv_as_sparc_ua_pcrel, [
135	save_CFLAGS="$CFLAGS"
136	save_LDFLAGS="$LDFLAGS"
137	CFLAGS="$CFLAGS -fpic"
138	LDFLAGS="$LDFLAGS -shared"
139	AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],,
140		    [libffi_cv_as_sparc_ua_pcrel=yes],
141		    [libffi_cv_as_sparc_ua_pcrel=no])
142	CFLAGS="$save_CFLAGS"
143	LDFLAGS="$save_LDFLAGS"])
144    if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then
145	AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
146		  [Define if your assembler and linker support unaligned PC relative relocs.])
147    fi
148
149    AC_CACHE_CHECK([assembler .register pseudo-op support],
150       libffi_cv_as_register_pseudo_op, [
151       libffi_cv_as_register_pseudo_op=unknown
152       # Check if we have .register
153       AC_TRY_COMPILE([asm (".register %g2, #scratch");],,
154		       [libffi_cv_as_register_pseudo_op=yes],
155		       [libffi_cv_as_register_pseudo_op=no])
156    ])
157    if test "x$libffi_cv_as_register_pseudo_op" = xyes; then
158       AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
159	       [Define if your assembler supports .register.])
160    fi
161fi
162
163AC_CACHE_CHECK([whether .eh_frame section should be read-only],
164    libffi_cv_ro_eh_frame, [
165	libffi_cv_ro_eh_frame=no
166	echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
167	if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
168	    if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
169		libffi_cv_ro_eh_frame=yes
170	    elif grep '.section.*eh_frame.*#alloc' conftest.c \
171		 | grep -v '#write' > /dev/null; then
172		libffi_cv_ro_eh_frame=yes
173	    fi
174	fi
175	rm -f conftest.*
176    ])
177if test "x$libffi_cv_ro_eh_frame" = xyes; then
178    AC_DEFINE(HAVE_RO_EH_FRAME, 1,
179	      [Define if .eh_frame sections should be read-only.])
180    AC_DEFINE(EH_FRAME_FLAGS, "a",
181	      [Define to the flags needed for the .section .eh_frame directive.])
182else
183    AC_DEFINE(EH_FRAME_FLAGS, "aw",
184	      [Define to the flags needed for the .section .eh_frame directive.])
185fi
186
187AC_SUBST(TARGET)
188AC_SUBST(TARGETDIR)
189
190AC_SUBST(SHELL)
191
192AC_ARG_ENABLE(debug,
193[  --enable-debug          debugging mode],
194  if test "$enable_debug" = "yes"; then
195    AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.])
196  fi)
197
198AC_ARG_ENABLE(structs,
199[  --disable-structs       omit code for struct support],
200  if test "$enable_structs" = "no"; then
201    AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this is you do not want support for aggregate types.])
202  fi)
203
204AC_ARG_ENABLE(raw-api,
205[  --disable-raw-api       make the raw api unavailable],
206  if test "$enable_raw_api" = "no"; then
207    AC_DEFINE(FFI_NO_RAW_API, 1, [Define this is you do not want support for the raw API.])
208  fi)
209
210AC_ARG_ENABLE(purify-safety,
211[  --enable-purify-safety  purify-safe mode],
212  if test "$enable_purify_safety" = "yes"; then
213    AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.])
214  fi)
215
216if test -n "$with_cross_host" &&
217   test x"$with_cross_host" != x"no"; then
218  toolexecdir='$(exec_prefix)/$(target_alias)'
219  toolexeclibdir='$(toolexecdir)/lib'
220else
221  toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
222  toolexeclibdir='$(libdir)'
223fi
224multi_os_directory=`$CC -print-multi-os-directory`
225case $multi_os_directory in
226  .) ;; # Avoid trailing /.
227  *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
228esac
229AC_SUBST(toolexecdir)
230AC_SUBST(toolexeclibdir)
231
232#Figure out where generated headers like ffitarget.h get installed.
233changequote(,)dnl
234gcc_version_trigger=${srcdir}/../gcc/version.c
235gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
236gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
237tool_include_dir='$(libdir)/gcc/$(target_alias)/'${gcc_version}/include
238changequote([,])dnl
239AC_SUBST(tool_include_dir)
240AC_SUBST(gcc_version)
241
242
243if test "${multilib}" = "yes"; then
244  multilib_arg="--enable-multilib"
245else
246  multilib_arg=
247fi
248
249AC_CONFIG_COMMANDS(include, [test -d include || mkdir include])
250AC_CONFIG_COMMANDS(src, [
251test -d src || mkdir src
252test -d src/$TARGETDIR || mkdir src/$TARGETDIR
253], [TARGETDIR="$TARGETDIR"])
254
255AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h)
256
257AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile)
258
259AC_OUTPUT
260