Lloyd Pique | 457ba79 | 2015-10-27 14:32:21 -0700 | [diff] [blame] | 1 | dnl Process this with autoconf to create configure |
| 2 | |
| 3 | AC_PREREQ(2.68) |
| 4 | |
| 5 | AC_INIT([libffi], [3.2.1], [http://github.com/atgreen/libffi/issues]) |
| 6 | AC_CONFIG_HEADERS([fficonfig.h]) |
| 7 | |
| 8 | AC_CANONICAL_SYSTEM |
| 9 | target_alias=${target_alias-$host_alias} |
| 10 | |
| 11 | case "${host}" in |
| 12 | frv*-elf) |
| 13 | LDFLAGS=`echo $LDFLAGS | sed "s/\-B[^ ]*libgloss\/frv\///"`\ -B`pwd`/../libgloss/frv/ |
| 14 | ;; |
| 15 | esac |
| 16 | |
| 17 | AX_ENABLE_BUILDDIR |
| 18 | |
| 19 | AM_INIT_AUTOMAKE |
| 20 | |
| 21 | # The same as in boehm-gc and libstdc++. Have to borrow it from there. |
| 22 | # We must force CC to /not/ be precious variables; otherwise |
| 23 | # the wrong, non-multilib-adjusted value will be used in multilibs. |
| 24 | # As a side effect, we have to subst CFLAGS ourselves. |
| 25 | # Also save and restore CFLAGS, since AC_PROG_CC will come up with |
| 26 | # defaults of its own if none are provided. |
| 27 | |
| 28 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) |
| 29 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) |
| 30 | save_CFLAGS=$CFLAGS |
| 31 | AC_PROG_CC |
| 32 | AC_PROG_CXX |
| 33 | CFLAGS=$save_CFLAGS |
| 34 | m4_undefine([_AC_ARG_VAR_PRECIOUS]) |
| 35 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) |
| 36 | |
| 37 | AC_SUBST(CFLAGS) |
| 38 | |
| 39 | AM_PROG_AS |
| 40 | AM_PROG_CC_C_O |
| 41 | AC_PROG_LIBTOOL |
| 42 | AC_CONFIG_MACRO_DIR([m4]) |
| 43 | |
| 44 | # Test for 64-bit build. |
| 45 | AC_CHECK_SIZEOF([size_t]) |
| 46 | |
| 47 | AX_COMPILER_VENDOR |
| 48 | AX_CC_MAXOPT |
| 49 | # The AX_CFLAGS_WARN_ALL macro doesn't currently work for sunpro |
| 50 | # compiler. |
| 51 | if test "$ax_cv_c_compiler_vendor" != "sun"; then |
| 52 | AX_CFLAGS_WARN_ALL |
| 53 | fi |
| 54 | |
| 55 | if test "x$GCC" = "xyes"; then |
| 56 | CFLAGS="$CFLAGS -fexceptions" |
| 57 | fi |
| 58 | |
| 59 | cat > local.exp <<EOF |
| 60 | set CC_FOR_TARGET "$CC" |
| 61 | set CXX_FOR_TARGET "$CXX" |
| 62 | EOF |
| 63 | |
| 64 | AM_MAINTAINER_MODE |
| 65 | |
| 66 | AC_CHECK_HEADERS(sys/mman.h) |
| 67 | AC_CHECK_FUNCS([mmap mkostemp]) |
| 68 | AC_FUNC_MMAP_BLACKLIST |
| 69 | |
| 70 | dnl The -no-testsuite modules omit the test subdir. |
| 71 | AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite) |
| 72 | |
| 73 | TARGETDIR="unknown" |
| 74 | HAVE_LONG_DOUBLE_VARIANT=0 |
| 75 | case "$host" in |
| 76 | aarch64*-*-*) |
| 77 | TARGET=AARCH64; TARGETDIR=aarch64 |
| 78 | ;; |
| 79 | |
| 80 | alpha*-*-*) |
| 81 | TARGET=ALPHA; TARGETDIR=alpha; |
| 82 | # Support 128-bit long double, changeable via command-line switch. |
| 83 | HAVE_LONG_DOUBLE='defined(__LONG_DOUBLE_128__)' |
| 84 | ;; |
| 85 | |
| 86 | arc*-*-*) |
| 87 | TARGET=ARC; TARGETDIR=arc |
| 88 | ;; |
| 89 | |
| 90 | arm*-*-*) |
| 91 | TARGET=ARM; TARGETDIR=arm |
| 92 | ;; |
| 93 | |
| 94 | amd64-*-freebsd* | amd64-*-openbsd*) |
| 95 | TARGET=X86_64; TARGETDIR=x86 |
| 96 | ;; |
| 97 | |
| 98 | amd64-*-freebsd*) |
| 99 | TARGET=X86_64; TARGETDIR=x86 |
| 100 | ;; |
| 101 | |
| 102 | amd64-*-freebsd*) |
| 103 | TARGET=X86_64; TARGETDIR=x86 |
| 104 | ;; |
| 105 | |
| 106 | avr32*-*-*) |
| 107 | TARGET=AVR32; TARGETDIR=avr32 |
| 108 | ;; |
| 109 | |
| 110 | bfin*) |
| 111 | TARGET=BFIN; TARGETDIR=bfin |
| 112 | ;; |
| 113 | |
| 114 | cris-*-*) |
| 115 | TARGET=LIBFFI_CRIS; TARGETDIR=cris |
| 116 | ;; |
| 117 | |
| 118 | frv-*-*) |
| 119 | TARGET=FRV; TARGETDIR=frv |
| 120 | ;; |
| 121 | |
| 122 | hppa*-*-linux* | parisc*-*-linux* | hppa*-*-openbsd*) |
| 123 | TARGET=PA_LINUX; TARGETDIR=pa |
| 124 | ;; |
| 125 | hppa*64-*-hpux*) |
| 126 | TARGET=PA64_HPUX; TARGETDIR=pa |
| 127 | ;; |
| 128 | hppa*-*-hpux*) |
| 129 | TARGET=PA_HPUX; TARGETDIR=pa |
| 130 | ;; |
| 131 | |
| 132 | i?86-*-freebsd* | i?86-*-openbsd*) |
| 133 | TARGET=X86_FREEBSD; TARGETDIR=x86 |
| 134 | ;; |
| 135 | i?86-win32* | i?86-*-cygwin* | i?86-*-mingw* | i?86-*-os2* | i?86-*-interix*) |
| 136 | TARGET=X86_WIN32; TARGETDIR=x86 |
| 137 | # All mingw/cygwin/win32 builds require -no-undefined for sharedlib. |
| 138 | # We must also check with_cross_host to decide if this is a native |
| 139 | # or cross-build and select where to install dlls appropriately. |
| 140 | if test -n "$with_cross_host" && |
| 141 | test x"$with_cross_host" != x"no"; then |
| 142 | AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"'; |
| 143 | else |
| 144 | AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"'; |
| 145 | fi |
| 146 | ;; |
| 147 | i?86-*-darwin*) |
| 148 | TARGET=X86_DARWIN; TARGETDIR=x86 |
| 149 | ;; |
| 150 | i?86-*-solaris2.1[[0-9]]*) |
| 151 | TARGETDIR=x86 |
| 152 | if test $ac_cv_sizeof_size_t = 4; then |
| 153 | TARGET=X86; |
| 154 | else |
| 155 | TARGET=X86_64; |
| 156 | fi |
| 157 | ;; |
| 158 | |
| 159 | x86_64-*-darwin*) |
| 160 | TARGET=X86_DARWIN; TARGETDIR=x86 |
| 161 | ;; |
| 162 | |
| 163 | x86_64-*-cygwin* | x86_64-*-mingw*) |
| 164 | TARGET=X86_WIN64; TARGETDIR=x86 |
| 165 | # All mingw/cygwin/win32 builds require -no-undefined for sharedlib. |
| 166 | # We must also check with_cross_host to decide if this is a native |
| 167 | # or cross-build and select where to install dlls appropriately. |
| 168 | if test -n "$with_cross_host" && |
| 169 | test x"$with_cross_host" != x"no"; then |
| 170 | AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"'; |
| 171 | else |
| 172 | AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"'; |
| 173 | fi |
| 174 | ;; |
| 175 | |
| 176 | i?86-*-* | x86_64-*-*) |
| 177 | TARGETDIR=x86 |
| 178 | if test $ac_cv_sizeof_size_t = 4; then |
| 179 | case "$host" in |
| 180 | *-gnux32) |
| 181 | TARGET=X86_64 |
| 182 | ;; |
| 183 | *) |
| 184 | TARGET=X86 |
| 185 | ;; |
| 186 | esac |
| 187 | else |
| 188 | TARGET=X86_64; |
| 189 | fi |
| 190 | ;; |
| 191 | |
| 192 | ia64*-*-*) |
| 193 | TARGET=IA64; TARGETDIR=ia64 |
| 194 | ;; |
| 195 | |
| 196 | m32r*-*-*) |
| 197 | TARGET=M32R; TARGETDIR=m32r |
| 198 | ;; |
| 199 | |
| 200 | m68k-*-*) |
| 201 | TARGET=M68K; TARGETDIR=m68k |
| 202 | ;; |
| 203 | |
| 204 | m88k-*-*) |
| 205 | TARGET=M88K; TARGETDIR=m88k |
| 206 | ;; |
| 207 | |
| 208 | microblaze*-*-*) |
| 209 | TARGET=MICROBLAZE; TARGETDIR=microblaze |
| 210 | ;; |
| 211 | |
| 212 | moxie-*-*) |
| 213 | TARGET=MOXIE; TARGETDIR=moxie |
| 214 | ;; |
| 215 | |
| 216 | metag-*-*) |
| 217 | TARGET=METAG; TARGETDIR=metag |
| 218 | ;; |
| 219 | |
| 220 | mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*) |
| 221 | TARGET=MIPS; TARGETDIR=mips |
| 222 | ;; |
| 223 | mips*-*linux* | mips*-*-openbsd*) |
| 224 | # Support 128-bit long double for NewABI. |
| 225 | HAVE_LONG_DOUBLE='defined(__mips64)' |
| 226 | TARGET=MIPS; TARGETDIR=mips |
| 227 | ;; |
| 228 | |
| 229 | nios2*-linux*) |
| 230 | TARGET=NIOS2; TARGETDIR=nios2 |
| 231 | ;; |
| 232 | |
| 233 | or1k*-linux*) |
| 234 | TARGET=OR1K; TARGETDIR=or1k |
| 235 | ;; |
| 236 | |
| 237 | powerpc*-*-linux* | powerpc-*-sysv*) |
| 238 | TARGET=POWERPC; TARGETDIR=powerpc |
| 239 | HAVE_LONG_DOUBLE_VARIANT=1 |
| 240 | ;; |
| 241 | powerpc-*-amigaos*) |
| 242 | TARGET=POWERPC; TARGETDIR=powerpc |
| 243 | ;; |
| 244 | powerpc-*-beos*) |
| 245 | TARGET=POWERPC; TARGETDIR=powerpc |
| 246 | ;; |
| 247 | powerpc-*-darwin* | powerpc64-*-darwin*) |
| 248 | TARGET=POWERPC_DARWIN; TARGETDIR=powerpc |
| 249 | ;; |
| 250 | powerpc-*-aix* | rs6000-*-aix*) |
| 251 | TARGET=POWERPC_AIX; TARGETDIR=powerpc |
| 252 | ;; |
| 253 | powerpc-*-freebsd* | powerpc-*-openbsd*) |
| 254 | TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc |
| 255 | HAVE_LONG_DOUBLE_VARIANT=1 |
| 256 | ;; |
| 257 | powerpc64-*-freebsd*) |
| 258 | TARGET=POWERPC; TARGETDIR=powerpc |
| 259 | ;; |
| 260 | powerpc*-*-rtems*) |
| 261 | TARGET=POWERPC; TARGETDIR=powerpc |
| 262 | ;; |
| 263 | |
| 264 | s390-*-* | s390x-*-*) |
| 265 | TARGET=S390; TARGETDIR=s390 |
| 266 | ;; |
| 267 | |
| 268 | sh-*-* | sh[[34]]*-*-*) |
| 269 | TARGET=SH; TARGETDIR=sh |
| 270 | ;; |
| 271 | sh64-*-* | sh5*-*-*) |
| 272 | TARGET=SH64; TARGETDIR=sh64 |
| 273 | ;; |
| 274 | |
| 275 | sparc*-*-*) |
| 276 | TARGET=SPARC; TARGETDIR=sparc |
| 277 | ;; |
| 278 | |
| 279 | tile*-*) |
| 280 | TARGET=TILE; TARGETDIR=tile |
| 281 | ;; |
| 282 | |
| 283 | vax-*-*) |
| 284 | TARGET=VAX; TARGETDIR=vax |
| 285 | ;; |
| 286 | |
| 287 | xtensa*-*) |
| 288 | TARGET=XTENSA; TARGETDIR=xtensa |
| 289 | ;; |
| 290 | |
| 291 | esac |
| 292 | |
| 293 | AC_SUBST(AM_RUNTESTFLAGS) |
| 294 | AC_SUBST(AM_LTLDFLAGS) |
| 295 | |
| 296 | if test $TARGETDIR = unknown; then |
| 297 | AC_MSG_ERROR(["libffi has not been ported to $host."]) |
| 298 | fi |
| 299 | |
| 300 | AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS) |
| 301 | AM_CONDITIONAL(BFIN, test x$TARGET = xBFIN) |
| 302 | AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC) |
| 303 | AM_CONDITIONAL(X86, test x$TARGET = xX86) |
| 304 | AM_CONDITIONAL(X86_FREEBSD, test x$TARGET = xX86_FREEBSD) |
| 305 | AM_CONDITIONAL(X86_WIN32, test x$TARGET = xX86_WIN32) |
| 306 | AM_CONDITIONAL(X86_WIN64, test x$TARGET = xX86_WIN64) |
| 307 | AM_CONDITIONAL(X86_DARWIN, test x$TARGET = xX86_DARWIN) |
| 308 | AM_CONDITIONAL(X86_DARWIN32, test x$TARGET = xX86_DARWIN && test $ac_cv_sizeof_size_t = 4) |
| 309 | AM_CONDITIONAL(X86_DARWIN64, test x$TARGET = xX86_DARWIN && test $ac_cv_sizeof_size_t = 8) |
| 310 | AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA) |
| 311 | AM_CONDITIONAL(IA64, test x$TARGET = xIA64) |
| 312 | AM_CONDITIONAL(M32R, test x$TARGET = xM32R) |
| 313 | AM_CONDITIONAL(M68K, test x$TARGET = xM68K) |
| 314 | AM_CONDITIONAL(M88K, test x$TARGET = xM88K) |
| 315 | AM_CONDITIONAL(MICROBLAZE, test x$TARGET = xMICROBLAZE) |
| 316 | AM_CONDITIONAL(METAG, test x$TARGET = xMETAG) |
| 317 | AM_CONDITIONAL(MOXIE, test x$TARGET = xMOXIE) |
| 318 | AM_CONDITIONAL(NIOS2, test x$TARGET = xNIOS2) |
| 319 | AM_CONDITIONAL(OR1K, test x$TARGET = xOR1K) |
| 320 | AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC) |
| 321 | AM_CONDITIONAL(POWERPC_AIX, test x$TARGET = xPOWERPC_AIX) |
| 322 | AM_CONDITIONAL(POWERPC_DARWIN, test x$TARGET = xPOWERPC_DARWIN) |
| 323 | AM_CONDITIONAL(POWERPC_FREEBSD, test x$TARGET = xPOWERPC_FREEBSD) |
| 324 | AM_CONDITIONAL(AARCH64, test x$TARGET = xAARCH64) |
| 325 | AM_CONDITIONAL(ARC, test x$TARGET = xARC) |
| 326 | AM_CONDITIONAL(ARM, test x$TARGET = xARM) |
| 327 | AM_CONDITIONAL(AVR32, test x$TARGET = xAVR32) |
| 328 | AM_CONDITIONAL(LIBFFI_CRIS, test x$TARGET = xLIBFFI_CRIS) |
| 329 | AM_CONDITIONAL(FRV, test x$TARGET = xFRV) |
| 330 | AM_CONDITIONAL(S390, test x$TARGET = xS390) |
| 331 | AM_CONDITIONAL(X86_64, test x$TARGET = xX86_64) |
| 332 | AM_CONDITIONAL(SH, test x$TARGET = xSH) |
| 333 | AM_CONDITIONAL(SH64, test x$TARGET = xSH64) |
| 334 | AM_CONDITIONAL(PA_LINUX, test x$TARGET = xPA_LINUX) |
| 335 | AM_CONDITIONAL(PA_HPUX, test x$TARGET = xPA_HPUX) |
| 336 | AM_CONDITIONAL(PA64_HPUX, test x$TARGET = xPA64_HPUX) |
| 337 | AM_CONDITIONAL(TILE, test x$TARGET = xTILE) |
| 338 | AM_CONDITIONAL(VAX, test x$TARGET = xVAX) |
| 339 | AM_CONDITIONAL(XTENSA, test x$TARGET = xXTENSA) |
| 340 | |
| 341 | AC_HEADER_STDC |
| 342 | AC_CHECK_FUNCS(memcpy) |
| 343 | AC_FUNC_ALLOCA |
| 344 | |
| 345 | AC_CHECK_SIZEOF(double) |
| 346 | AC_CHECK_SIZEOF(long double) |
| 347 | |
| 348 | # Also AC_SUBST this variable for ffi.h. |
| 349 | if test -z "$HAVE_LONG_DOUBLE"; then |
| 350 | HAVE_LONG_DOUBLE=0 |
| 351 | if test $ac_cv_sizeof_long_double != 0; then |
| 352 | if test $HAVE_LONG_DOUBLE_VARIANT != 0; then |
| 353 | AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type]) |
| 354 | HAVE_LONG_DOUBLE=1 |
| 355 | else |
| 356 | if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then |
| 357 | HAVE_LONG_DOUBLE=1 |
| 358 | AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double]) |
| 359 | fi |
| 360 | fi |
| 361 | fi |
| 362 | fi |
| 363 | AC_SUBST(HAVE_LONG_DOUBLE) |
| 364 | AC_SUBST(HAVE_LONG_DOUBLE_VARIANT) |
| 365 | |
| 366 | AC_C_BIGENDIAN |
| 367 | |
| 368 | GCC_AS_CFI_PSEUDO_OP |
| 369 | |
| 370 | if test x$TARGET = xSPARC; then |
| 371 | AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs], |
| 372 | libffi_cv_as_sparc_ua_pcrel, [ |
| 373 | save_CFLAGS="$CFLAGS" |
| 374 | save_LDFLAGS="$LDFLAGS" |
| 375 | CFLAGS="$CFLAGS -fpic" |
| 376 | LDFLAGS="$LDFLAGS -shared" |
| 377 | AC_TRY_LINK([asm (".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo); .text");],, |
| 378 | [libffi_cv_as_sparc_ua_pcrel=yes], |
| 379 | [libffi_cv_as_sparc_ua_pcrel=no]) |
| 380 | CFLAGS="$save_CFLAGS" |
| 381 | LDFLAGS="$save_LDFLAGS"]) |
| 382 | if test "x$libffi_cv_as_sparc_ua_pcrel" = xyes; then |
| 383 | AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, |
| 384 | [Define if your assembler and linker support unaligned PC relative relocs.]) |
| 385 | fi |
| 386 | |
| 387 | AC_CACHE_CHECK([assembler .register pseudo-op support], |
| 388 | libffi_cv_as_register_pseudo_op, [ |
| 389 | libffi_cv_as_register_pseudo_op=unknown |
| 390 | # Check if we have .register |
| 391 | AC_TRY_COMPILE(,[asm (".register %g2, #scratch");], |
| 392 | [libffi_cv_as_register_pseudo_op=yes], |
| 393 | [libffi_cv_as_register_pseudo_op=no]) |
| 394 | ]) |
| 395 | if test "x$libffi_cv_as_register_pseudo_op" = xyes; then |
| 396 | AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, |
| 397 | [Define if your assembler supports .register.]) |
| 398 | fi |
| 399 | fi |
| 400 | |
| 401 | if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then |
| 402 | AC_CACHE_CHECK([assembler supports pc related relocs], |
| 403 | libffi_cv_as_x86_pcrel, [ |
| 404 | libffi_cv_as_x86_pcrel=no |
| 405 | echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s |
| 406 | if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then |
| 407 | libffi_cv_as_x86_pcrel=yes |
| 408 | fi |
| 409 | ]) |
| 410 | if test "x$libffi_cv_as_x86_pcrel" = xyes; then |
| 411 | AC_DEFINE(HAVE_AS_X86_PCREL, 1, |
| 412 | [Define if your assembler supports PC relative relocs.]) |
| 413 | fi |
| 414 | |
| 415 | AC_CACHE_CHECK([assembler .ascii pseudo-op support], |
| 416 | libffi_cv_as_ascii_pseudo_op, [ |
| 417 | libffi_cv_as_ascii_pseudo_op=unknown |
| 418 | # Check if we have .ascii |
| 419 | AC_TRY_COMPILE(,[asm (".ascii \\"string\\"");], |
| 420 | [libffi_cv_as_ascii_pseudo_op=yes], |
| 421 | [libffi_cv_as_ascii_pseudo_op=no]) |
| 422 | ]) |
| 423 | if test "x$libffi_cv_as_ascii_pseudo_op" = xyes; then |
| 424 | AC_DEFINE(HAVE_AS_ASCII_PSEUDO_OP, 1, |
| 425 | [Define if your assembler supports .ascii.]) |
| 426 | fi |
| 427 | |
| 428 | AC_CACHE_CHECK([assembler .string pseudo-op support], |
| 429 | libffi_cv_as_string_pseudo_op, [ |
| 430 | libffi_cv_as_string_pseudo_op=unknown |
| 431 | # Check if we have .string |
| 432 | AC_TRY_COMPILE(,[asm (".string \\"string\\"");], |
| 433 | [libffi_cv_as_string_pseudo_op=yes], |
| 434 | [libffi_cv_as_string_pseudo_op=no]) |
| 435 | ]) |
| 436 | if test "x$libffi_cv_as_string_pseudo_op" = xyes; then |
| 437 | AC_DEFINE(HAVE_AS_STRING_PSEUDO_OP, 1, |
| 438 | [Define if your assembler supports .string.]) |
| 439 | fi |
| 440 | fi |
| 441 | |
| 442 | # On PaX enable kernels that have MPROTECT enable we can't use PROT_EXEC. |
| 443 | AC_ARG_ENABLE(pax_emutramp, |
| 444 | [ --enable-pax_emutramp enable pax emulated trampolines, for we can't use PROT_EXEC], |
| 445 | if test "$enable_pax_emutramp" = "yes"; then |
| 446 | AC_DEFINE(FFI_MMAP_EXEC_EMUTRAMP_PAX, 1, |
| 447 | [Define this if you want to enable pax emulated trampolines]) |
| 448 | fi) |
| 449 | |
| 450 | LT_SYS_SYMBOL_USCORE |
| 451 | if test "x$sys_symbol_underscore" = xyes; then |
| 452 | AC_DEFINE(SYMBOL_UNDERSCORE, 1, [Define if symbols are underscored.]) |
| 453 | fi |
| 454 | |
| 455 | FFI_EXEC_TRAMPOLINE_TABLE=0 |
| 456 | case "$target" in |
| 457 | *arm*-apple-darwin*) |
| 458 | FFI_EXEC_TRAMPOLINE_TABLE=1 |
| 459 | AC_DEFINE(FFI_EXEC_TRAMPOLINE_TABLE, 1, |
| 460 | [Cannot use PROT_EXEC on this target, so, we revert to |
| 461 | alternative means]) |
| 462 | ;; |
| 463 | *-apple-darwin1* | *-*-freebsd* | *-*-kfreebsd* | *-*-openbsd* | *-pc-solaris*) |
| 464 | AC_DEFINE(FFI_MMAP_EXEC_WRIT, 1, |
| 465 | [Cannot use malloc on this target, so, we revert to |
| 466 | alternative means]) |
| 467 | ;; |
| 468 | esac |
| 469 | AM_CONDITIONAL(FFI_EXEC_TRAMPOLINE_TABLE, test x$FFI_EXEC_TRAMPOLINE_TABLE = x1) |
| 470 | AC_SUBST(FFI_EXEC_TRAMPOLINE_TABLE) |
| 471 | |
| 472 | if test x$TARGET = xX86_64; then |
| 473 | AC_CACHE_CHECK([toolchain supports unwind section type], |
| 474 | libffi_cv_as_x86_64_unwind_section_type, [ |
| 475 | cat > conftest1.s << EOF |
| 476 | .text |
| 477 | .globl foo |
| 478 | foo: |
| 479 | jmp bar |
| 480 | .section .eh_frame,"a",@unwind |
| 481 | bar: |
| 482 | EOF |
| 483 | |
| 484 | cat > conftest2.c << EOF |
| 485 | extern void foo(); |
| 486 | int main(){foo();} |
| 487 | EOF |
| 488 | |
| 489 | libffi_cv_as_x86_64_unwind_section_type=no |
| 490 | # we ensure that we can compile _and_ link an assembly file containing an @unwind section |
| 491 | # since the compiler can support it and not the linker (ie old binutils) |
| 492 | if $CC -Wa,--fatal-warnings $CFLAGS -c conftest1.s > /dev/null 2>&1 && \ |
| 493 | $CC conftest2.c conftest1.o > /dev/null 2>&1 ; then |
| 494 | libffi_cv_as_x86_64_unwind_section_type=yes |
| 495 | fi |
| 496 | ]) |
| 497 | if test "x$libffi_cv_as_x86_64_unwind_section_type" = xyes; then |
| 498 | AC_DEFINE(HAVE_AS_X86_64_UNWIND_SECTION_TYPE, 1, |
| 499 | [Define if your assembler supports unwind section type.]) |
| 500 | fi |
| 501 | fi |
| 502 | |
| 503 | if test "x$GCC" = "xyes"; then |
| 504 | AC_CACHE_CHECK([whether .eh_frame section should be read-only], |
| 505 | libffi_cv_ro_eh_frame, [ |
| 506 | libffi_cv_ro_eh_frame=no |
| 507 | echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c |
| 508 | if $CC $CFLAGS -c -fpic -fexceptions -o conftest.o conftest.c > /dev/null 2>&1; then |
| 509 | objdump -h conftest.o > conftest.dump 2>&1 |
| 510 | libffi_eh_frame_line=`grep -n eh_frame conftest.dump | cut -d: -f 1` |
| 511 | libffi_test_line=`expr $libffi_eh_frame_line + 1`p |
| 512 | sed -n $libffi_test_line conftest.dump > conftest.line |
| 513 | if grep READONLY conftest.line > /dev/null; then |
| 514 | libffi_cv_ro_eh_frame=yes |
| 515 | fi |
| 516 | fi |
| 517 | rm -f conftest.* |
| 518 | ]) |
| 519 | if test "x$libffi_cv_ro_eh_frame" = xyes; then |
| 520 | AC_DEFINE(HAVE_RO_EH_FRAME, 1, |
| 521 | [Define if .eh_frame sections should be read-only.]) |
| 522 | AC_DEFINE(EH_FRAME_FLAGS, "a", |
| 523 | [Define to the flags needed for the .section .eh_frame directive. ]) |
| 524 | else |
| 525 | AC_DEFINE(EH_FRAME_FLAGS, "aw", |
| 526 | [Define to the flags needed for the .section .eh_frame directive. ]) |
| 527 | fi |
| 528 | |
| 529 | AC_CACHE_CHECK([for __attribute__((visibility("hidden")))], |
| 530 | libffi_cv_hidden_visibility_attribute, [ |
| 531 | echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1 ; }' > conftest.c |
| 532 | libffi_cv_hidden_visibility_attribute=no |
| 533 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
| 534 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
| 535 | libffi_cv_hidden_visibility_attribute=yes |
| 536 | fi |
| 537 | fi |
| 538 | rm -f conftest.* |
| 539 | ]) |
| 540 | if test $libffi_cv_hidden_visibility_attribute = yes; then |
| 541 | AC_DEFINE(HAVE_HIDDEN_VISIBILITY_ATTRIBUTE, 1, |
| 542 | [Define if __attribute__((visibility("hidden"))) is supported.]) |
| 543 | fi |
| 544 | fi |
| 545 | |
| 546 | AH_BOTTOM([ |
| 547 | #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE |
| 548 | #ifdef LIBFFI_ASM |
| 549 | #define FFI_HIDDEN(name) .hidden name |
| 550 | #else |
| 551 | #define FFI_HIDDEN __attribute__ ((visibility ("hidden"))) |
| 552 | #endif |
| 553 | #else |
| 554 | #ifdef LIBFFI_ASM |
| 555 | #define FFI_HIDDEN(name) |
| 556 | #else |
| 557 | #define FFI_HIDDEN |
| 558 | #endif |
| 559 | #endif |
| 560 | ]) |
| 561 | |
| 562 | AC_SUBST(TARGET) |
| 563 | AC_SUBST(TARGETDIR) |
| 564 | |
| 565 | AC_SUBST(SHELL) |
| 566 | |
| 567 | AC_ARG_ENABLE(debug, |
| 568 | [ --enable-debug debugging mode], |
| 569 | if test "$enable_debug" = "yes"; then |
| 570 | AC_DEFINE(FFI_DEBUG, 1, [Define this if you want extra debugging.]) |
| 571 | fi) |
| 572 | AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes") |
| 573 | |
| 574 | AC_ARG_ENABLE(structs, |
| 575 | [ --disable-structs omit code for struct support], |
| 576 | if test "$enable_structs" = "no"; then |
| 577 | AC_DEFINE(FFI_NO_STRUCTS, 1, [Define this if you do not want support for aggregate types.]) |
| 578 | fi) |
| 579 | AM_CONDITIONAL(FFI_DEBUG, test "$enable_debug" = "yes") |
| 580 | |
| 581 | AC_ARG_ENABLE(raw-api, |
| 582 | [ --disable-raw-api make the raw api unavailable], |
| 583 | if test "$enable_raw_api" = "no"; then |
| 584 | AC_DEFINE(FFI_NO_RAW_API, 1, [Define this if you do not want support for the raw API.]) |
| 585 | fi) |
| 586 | |
| 587 | AC_ARG_ENABLE(purify-safety, |
| 588 | [ --enable-purify-safety purify-safe mode], |
| 589 | if test "$enable_purify_safety" = "yes"; then |
| 590 | AC_DEFINE(USING_PURIFY, 1, [Define this if you are using Purify and want to suppress spurious messages.]) |
| 591 | fi) |
| 592 | |
| 593 | # These variables are only ever used when we cross-build to X86_WIN32. |
| 594 | # And we only support this with GCC, so... |
| 595 | if test "x$GCC" = "xyes"; then |
| 596 | if test -n "$with_cross_host" && |
| 597 | test x"$with_cross_host" != x"no"; then |
| 598 | toolexecdir="${exec_prefix}"/'$(target_alias)' |
| 599 | toolexeclibdir="${toolexecdir}"/lib |
| 600 | else |
| 601 | toolexecdir="${libdir}"/gcc-lib/'$(target_alias)' |
| 602 | toolexeclibdir="${libdir}" |
| 603 | fi |
| 604 | multi_os_directory=`$CC $CFLAGS -print-multi-os-directory` |
| 605 | case $multi_os_directory in |
| 606 | .) ;; # Avoid trailing /. |
| 607 | ../*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; |
| 608 | esac |
| 609 | AC_SUBST(toolexecdir) |
| 610 | else |
| 611 | toolexeclibdir="${libdir}" |
| 612 | fi |
| 613 | AC_SUBST(toolexeclibdir) |
| 614 | |
| 615 | AC_CONFIG_COMMANDS(include, [test -d include || mkdir include]) |
| 616 | AC_CONFIG_COMMANDS(src, [ |
| 617 | test -d src || mkdir src |
| 618 | test -d src/$TARGETDIR || mkdir src/$TARGETDIR |
| 619 | ], [TARGETDIR="$TARGETDIR"]) |
| 620 | |
| 621 | AC_CONFIG_LINKS(include/ffitarget.h:src/$TARGETDIR/ffitarget.h) |
| 622 | |
| 623 | AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc) |
| 624 | |
| 625 | AC_OUTPUT |