aclocal.m4 71.3 KB
Newer Older
1 2 3 4
# Extra autoconf macros for the Glasgow fptools
#
# To be a good autoconf citizen, names of local macros have prefixed with FP_ to
# ensure we don't clash with any pre-supplied autoconf ones.
sof's avatar
sof committed
5

6

7 8 9 10 11 12 13 14 15 16
AC_DEFUN([GHC_SELECT_FILE_EXTENSIONS],
[
    $2=''
    $3='.so'
    case $1 in
    *-unknown-cygwin32)
        AC_MSG_WARN([GHC does not support the Cygwin target at the moment])
        AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32])
        exit 1
        ;;
17 18
    # examples: i386-unknown-mingw32, i686-w64-mingw32, x86_64-w64-mingw32
    *-mingw32)
19 20 21 22
        windows=YES
        $2='.exe'
        $3='.dll'
        ;;
23 24
    # apple platform uses .dylib (macOS, iOS, ...)
    *-apple-*)
25 26 27 28 29
        $3='.dylib'
        ;;
    esac
])

30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
# FPTOOLS_SET_PLATFORM_VARS
# ----------------------------------
# Set the platform variables
AC_DEFUN([FPTOOLS_SET_PLATFORM_VARS],
[
    # If no argument was given for a configuration variable, then discard
    # the guessed canonical system and use the configuration of the
    # bootstrapping ghc. If an argument was given, map it from gnu format
    # to ghc format.
    #
    # For why we do it this way, see: #3637, #1717, #2951
    #
    # In bindists, we haven't called AC_CANONICAL_{BUILD,HOST,TARGET}
    # so this justs uses $bootstrap_target.

    if test "$build_alias" = ""
    then
        if test "$bootstrap_target" != ""
        then
            build=$bootstrap_target
            echo "Build platform inferred as: $build"
        else
            echo "Can't work out build platform"
            exit 1
        fi

        BuildArch=`echo "$build" | sed 's/-.*//'`
        BuildVendor=`echo "$build" | sed -e 's/.*-\(.*\)-.*/\1/'`
        BuildOS=`echo "$build" | sed 's/.*-//'`
    else
        GHC_CONVERT_CPU([$build_cpu], [BuildArch])
        GHC_CONVERT_VENDOR([$build_vendor], [BuildVendor])
62
        GHC_CONVERT_OS([$build_os], [$BuildArch], [BuildOS])
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
    fi

    if test "$host_alias" = ""
    then
        if test "$bootstrap_target" != ""
        then
            host=$bootstrap_target
            echo "Host platform inferred as: $host"
        else
            echo "Can't work out host platform"
            exit 1
        fi

        HostArch=`echo "$host" | sed 's/-.*//'`
        HostVendor=`echo "$host" | sed -e 's/.*-\(.*\)-.*/\1/'`
        HostOS=`echo "$host" | sed 's/.*-//'`
    else
        GHC_CONVERT_CPU([$host_cpu], [HostArch])
        GHC_CONVERT_VENDOR([$host_vendor], [HostVendor])
82
        GHC_CONVERT_OS([$host_os], [$HostArch], [HostOS])
83 84 85 86
    fi

    if test "$target_alias" = ""
    then
Simon Marlow's avatar
Simon Marlow committed
87
        if test "$host_alias" != ""
88
        then
Simon Marlow's avatar
Simon Marlow committed
89 90
            GHC_CONVERT_CPU([$host_cpu], [TargetArch])
            GHC_CONVERT_VENDOR([$host_vendor], [TargetVendor])
91
            GHC_CONVERT_OS([$host_os], [$TargetArch],[TargetOS])
92
        else
Simon Marlow's avatar
Simon Marlow committed
93 94 95 96 97 98 99 100
            if test "$bootstrap_target" != ""
            then
                target=$bootstrap_target
                echo "Target platform inferred as: $target"
            else
                echo "Can't work out target platform"
                exit 1
            fi
101

Simon Marlow's avatar
Simon Marlow committed
102 103 104
            TargetArch=`echo "$target" | sed 's/-.*//'`
            TargetVendor=`echo "$target" | sed -e 's/.*-\(.*\)-.*/\1/'`
            TargetOS=`echo "$target" | sed 's/.*-//'`
105 106 107 108
        fi
    else
        GHC_CONVERT_CPU([$target_cpu], [TargetArch])
        GHC_CONVERT_VENDOR([$target_vendor], [TargetVendor])
109
        GHC_CONVERT_OS([$target_os], [$TargetArch], [TargetOS])
110
    fi
111

112 113
    GHC_SELECT_FILE_EXTENSIONS([$host], [exeext_host], [soext_host])
    GHC_SELECT_FILE_EXTENSIONS([$target], [exeext_target], [soext_target])
114 115 116 117 118 119
    windows=NO
    case $host in
    *-unknown-mingw32)
        windows=YES
        ;;
    esac
120

121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
    BuildPlatform="$BuildArch-$BuildVendor-$BuildOS"
    BuildPlatform_CPP=`echo "$BuildPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
    BuildArch_CPP=`    echo "$BuildArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
    BuildVendor_CPP=`  echo "$BuildVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
    BuildOS_CPP=`      echo "$BuildOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`

    HostPlatform="$HostArch-$HostVendor-$HostOS"
    HostPlatform_CPP=`echo "$HostPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
    HostArch_CPP=`    echo "$HostArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
    HostVendor_CPP=`  echo "$HostVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
    HostOS_CPP=`      echo "$HostOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`

    TargetPlatform="$TargetArch-$TargetVendor-$TargetOS"
    TargetPlatform_CPP=`echo "$TargetPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
    TargetArch_CPP=`    echo "$TargetArch"     | sed -e 's/\./_/g' -e 's/-/_/g'`
    TargetVendor_CPP=`  echo "$TargetVendor"   | sed -e 's/\./_/g' -e 's/-/_/g'`
    TargetOS_CPP=`      echo "$TargetOS"       | sed -e 's/\./_/g' -e 's/-/_/g'`

139 140 141
    # we intend to pass trough --targets to llvm as is.
    LLVMTarget_CPP=`    echo "$target"`

142 143 144
    echo "GHC build  : $BuildPlatform"
    echo "GHC host   : $HostPlatform"
    echo "GHC target : $TargetPlatform"
145
    echo "LLVM target: $target"
146 147 148 149 150 151 152 153 154 155 156 157 158 159 160

    AC_SUBST(BuildPlatform)
    AC_SUBST(HostPlatform)
    AC_SUBST(TargetPlatform)
    AC_SUBST(HostPlatform_CPP)
    AC_SUBST(BuildPlatform_CPP)
    AC_SUBST(TargetPlatform_CPP)

    AC_SUBST(HostArch_CPP)
    AC_SUBST(BuildArch_CPP)
    AC_SUBST(TargetArch_CPP)

    AC_SUBST(HostOS_CPP)
    AC_SUBST(BuildOS_CPP)
    AC_SUBST(TargetOS_CPP)
161
    AC_SUBST(LLVMTarget_CPP)
162 163 164 165 166

    AC_SUBST(HostVendor_CPP)
    AC_SUBST(BuildVendor_CPP)
    AC_SUBST(TargetVendor_CPP)

167 168 169 170
    AC_SUBST(exeext_host)
    AC_SUBST(exeext_target)
    AC_SUBST(soext_host)
    AC_SUBST(soext_target)
171 172 173 174 175 176 177 178
])


# FPTOOLS_SET_HASKELL_PLATFORM_VARS
# ----------------------------------
# Set the Haskell platform variables
AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
[
179 180
    checkArch() {
        case [$]1 in
181 182 183
        i386)
            test -z "[$]2" || eval "[$]2=ArchX86"
            ;;
184
        x86_64|amd64)
185 186 187 188 189 190
            test -z "[$]2" || eval "[$]2=ArchX86_64"
            ;;
        powerpc)
            test -z "[$]2" || eval "[$]2=ArchPPC"
            ;;
        powerpc64)
191 192 193 194
            test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V1}\""
            ;;
        powerpc64le)
            test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V2}\""
195 196 197 198
            ;;
        sparc)
            test -z "[$]2" || eval "[$]2=ArchSPARC"
            ;;
199 200 201
        sparc64)
            test -z "[$]2" || eval "[$]2=ArchSPARC64"
            ;;
202 203
        arm)
            GET_ARM_ISA()
204
            test -z "[$]2" || eval "[$]2=\"ArchARM {armISA = \$ARM_ISA, armISAExt = \$ARM_ISA_EXT, armABI = \$ARM_ABI}\""
205
            ;;
Colin Watson's avatar
Colin Watson committed
206 207 208
        aarch64)
            test -z "[$]2" || eval "[$]2=ArchARM64"
            ;;
209 210 211 212 213 214 215 216 217
        alpha)
            test -z "[$]2" || eval "[$]2=ArchAlpha"
            ;;
        mips|mipseb)
            test -z "[$]2" || eval "[$]2=ArchMipseb"
            ;;
        mipsel)
            test -z "[$]2" || eval "[$]2=ArchMipsel"
            ;;
218
        hppa|hppa1_1|ia64|m68k|rs6000|s390|s390x|sh4|vax)
219
            test -z "[$]2" || eval "[$]2=ArchUnknown"
220 221 222 223 224 225 226 227 228 229
            ;;
        *)
            echo "Unknown arch [$]1"
            exit 1
            ;;
        esac
    }

    checkVendor() {
        case [$]1 in
230
        dec|none|unknown|hp|apple|next|sun|sgi|ibm|montavista|portbld)
231 232
            ;;
        *)
233
            AC_MSG_WARN([Unknown vendor [$]1])
234 235 236 237 238 239
            ;;
        esac
    }

    checkOS() {
        case [$]1 in
240 241 242
        linux)
            test -z "[$]2" || eval "[$]2=OSLinux"
            ;;
243 244 245
        ios)
            test -z "[$]2" || eval "[$]2=OSiOS"
            ;;
246 247 248 249 250 251 252 253 254 255 256 257
        darwin)
            test -z "[$]2" || eval "[$]2=OSDarwin"
            ;;
        solaris2)
            test -z "[$]2" || eval "[$]2=OSSolaris2"
            ;;
        mingw32)
            test -z "[$]2" || eval "[$]2=OSMinGW32"
            ;;
        freebsd)
            test -z "[$]2" || eval "[$]2=OSFreeBSD"
            ;;
258 259 260
        dragonfly)
            test -z "[$]2" || eval "[$]2=OSDragonFly"
            ;;
261 262 263
        kfreebsdgnu)
            test -z "[$]2" || eval "[$]2=OSKFreeBSD"
            ;;
264 265 266
        openbsd)
            test -z "[$]2" || eval "[$]2=OSOpenBSD"
            ;;
Ian Lynagh's avatar
Ian Lynagh committed
267 268 269
        netbsd)
            test -z "[$]2" || eval "[$]2=OSNetBSD"
            ;;
pcapriotti's avatar
pcapriotti committed
270 271 272
        haiku)
            test -z "[$]2" || eval "[$]2=OSHaiku"
            ;;
273 274 275
        nto-qnx)
            test -z "[$]2" || eval "[$]2=OSQNXNTO"
            ;;
276
        dragonfly|hpux|linuxaout|freebsd2|gnu|nextstep2|nextstep3|sunos4|ultrix)
277
            test -z "[$]2" || eval "[$]2=OSUnknown"
278
            ;;
279 280 281
        aix)
            test -z "[$]2" || eval "[$]2=OSAIX"
            ;;
282 283 284
        linux-android)
            test -z "[$]2" || eval "[$]2=OSAndroid"
            ;;
285 286 287 288 289
        *)
            echo "Unknown OS '[$]1'"
            exit 1
            ;;
        esac
290
    }
291

292 293 294 295 296 297 298 299 300 301 302 303 304 305
    dnl ** check for Apple-style dead-stripping support
    dnl    (.subsections-via-symbols assembler directive)

    AC_MSG_CHECKING(for .subsections_via_symbols)
    AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])],
        [AC_MSG_RESULT(yes)
         HaskellHaveSubsectionsViaSymbols=True
         AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
                   [Define to 1 if Apple-style dead-stripping is supported.])
        ],
        [HaskellHaveSubsectionsViaSymbols=False
         AC_MSG_RESULT(no)])

306 307 308 309 310 311 312 313 314 315
    dnl ** check for .ident assembler directive

    AC_MSG_CHECKING(whether your assembler supports .ident directive)
    AC_COMPILE_IFELSE(
        [AC_LANG_SOURCE([__asm__ (".ident \"GHC x.y.z\"");])],
        [AC_MSG_RESULT(yes)
         HaskellHaveIdentDirective=True],
        [AC_MSG_RESULT(no)
         HaskellHaveIdentDirective=False])

316 317 318 319 320 321 322 323
    dnl *** check for GNU non-executable stack note support (ELF only)
    dnl     (.section .note.GNU-stack,"",@progbits)

    dnl This test doesn't work with "gcc -g" in gcc 4.4 (GHC trac #3889:
    dnl     Error: can't resolve `.note.GNU-stack' {.note.GNU-stack section} - `.Ltext0' {.text section}
    dnl so we empty CFLAGS while running this test
    CFLAGS2="$CFLAGS"
    CFLAGS=
324 325 326 327 328 329 330 331 332
    case $TargetArch in
      arm)
        dnl See #13937.
        progbits="%progbits"
        ;;
      *)
        progbits="@progbits"
        ;;
    esac
333 334
    AC_MSG_CHECKING(for GNU non-executable stack support)
    AC_COMPILE_IFELSE(
335
        [AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",$progbits");], [0])],
336 337 338 339 340 341
        [AC_MSG_RESULT(yes)
         HaskellHaveGnuNonexecStack=True],
        [AC_MSG_RESULT(no)
         HaskellHaveGnuNonexecStack=False])
    CFLAGS="$CFLAGS2"

342
    checkArch "$BuildArch" "HaskellBuildArch"
343 344 345
    checkVendor "$BuildVendor"
    checkOS "$BuildOS" ""

346
    checkArch "$HostArch" "HaskellHostArch"
347 348 349 350 351 352 353 354 355
    checkVendor "$HostVendor"
    checkOS "$HostOS" ""

    checkArch "$TargetArch" "HaskellTargetArch"
    checkVendor "$TargetVendor"
    checkOS "$TargetOS" "HaskellTargetOs"

    AC_SUBST(HaskellTargetArch)
    AC_SUBST(HaskellTargetOs)
356
    AC_SUBST(HaskellHaveSubsectionsViaSymbols)
357
    AC_SUBST(HaskellHaveIdentDirective)
358
    AC_SUBST(HaskellHaveGnuNonexecStack)
359 360 361 362 363
])


# GET_ARM_ISA
# ----------------------------------
Gabor Greif's avatar
Gabor Greif committed
364
# Get info about the ISA on the ARM arch
365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399
AC_DEFUN([GET_ARM_ISA],
[
    AC_COMPILE_IFELSE([
        AC_LANG_PROGRAM(
            [],
            [#if defined(__ARM_ARCH_2__)  || \
                 defined(__ARM_ARCH_3__)  || \
                 defined(__ARM_ARCH_3M__) || \
                 defined(__ARM_ARCH_4__)  || \
                 defined(__ARM_ARCH_4T__) || \
                 defined(__ARM_ARCH_5__)  || \
                 defined(__ARM_ARCH_5T__) || \
                 defined(__ARM_ARCH_5E__) || \
                 defined(__ARM_ARCH_5TE__)
                 return 0;
             #else
                 not pre arm v6
             #endif]
        )],
        [AC_DEFINE(arm_HOST_ARCH_PRE_ARMv6, 1, [ARM pre v6])
         AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7])
         changequote(, )dnl
         ARM_ISA=ARMv5
         ARM_ISA_EXT="[]"
         changequote([, ])dnl
        ],
        [
            AC_COMPILE_IFELSE([
                AC_LANG_PROGRAM(
                    [],
                    [#if defined(__ARM_ARCH_6__)   || \
                         defined(__ARM_ARCH_6J__)  || \
                         defined(__ARM_ARCH_6T2__) || \
                         defined(__ARM_ARCH_6Z__)  || \
                         defined(__ARM_ARCH_6ZK__) || \
Moritz Angermann's avatar
Moritz Angermann committed
400 401
                         defined(__ARM_ARCH_6K__)  || \
                         defined(__ARM_ARCH_6KZ__) || \
402 403 404 405 406 407 408 409
                         defined(__ARM_ARCH_6M__)
                         return 0;
                     #else
                         not pre arm v7
                     #endif]
                )],
                [AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7])
                 ARM_ISA=ARMv6
410 411 412 413 414 415 416 417 418 419 420
                 AC_COMPILE_IFELSE([
                        AC_LANG_PROGRAM(
                                [],
                                [#if defined(__VFP_FP__)
                                     return 0;
                                #else
                                     no vfp
                                #endif]
                        )],
                        [changequote(, )dnl
                         ARM_ISA_EXT="[VFPv2]"
421 422
                         changequote([, ])dnl
                        ],
423 424
                        [changequote(, )dnl
                         ARM_ISA_EXT="[]"
425 426
                         changequote([, ])dnl
                        ]
427
                )],
428 429
                [changequote(, )dnl
                 ARM_ISA=ARMv7
430
                 ARM_ISA_EXT="[VFPv3,NEON]"
431 432 433
                 changequote([, ])dnl
                ])
        ])
434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460

        AC_COMPILE_IFELSE(
               [AC_LANG_PROGRAM(
                       [],
                       [#if defined(__SOFTFP__)
                            return 0;
                       #else
                            not softfp
                       #endif]
               )],
               [changequote(, )dnl
                ARM_ABI="SOFT"
                changequote([, ])dnl
               ],
               [AC_COMPILE_IFELSE(
                    [AC_LANG_PROGRAM(
                       [],
                       [#if defined(__ARM_PCS_VFP)
                            return 0;
                       #else
                            no hard float ABI
                       #endif]
                    )],
                    [ARM_ABI="HARD"],
                    [ARM_ABI="SOFTFP"]
               )]
        )
461 462

        AC_SUBST(ARM_ISA)
463 464 465 466 467 468 469 470
])


# FP_SETTINGS
# ----------------------------------
# Set the variables used in the settings file
AC_DEFUN([FP_SETTINGS],
[
471
    if test "$windows" = YES -a "$EnableDistroToolchain" = "NO"
472
    then
473 474 475 476 477 478 479 480 481 482
        mingw_bin_prefix=mingw/bin/
        SettingsCCompilerCommand="\$topdir/../${mingw_bin_prefix}gcc.exe"
        SettingsHaskellCPPCommand="\$topdir/../${mingw_bin_prefix}gcc.exe"
        SettingsHaskellCPPFlags="$HaskellCPPArgs"
        SettingsLdCommand="\$topdir/../${mingw_bin_prefix}ld.exe"
        SettingsArCommand="\$topdir/../${mingw_bin_prefix}ar.exe"
        SettingsPerlCommand='$topdir/../perl/perl.exe'
        SettingsDllWrapCommand="\$topdir/../${mingw_bin_prefix}dllwrap.exe"
        SettingsWindresCommand="\$topdir/../${mingw_bin_prefix}windres.exe"
        SettingsTouchCommand='$topdir/bin/touchy.exe'
483 484 485 486 487 488 489 490 491 492 493 494
    elif test "$EnableDistroToolchain" = "YES"
    then
        SettingsCCompilerCommand="$(basename $CC)"
        SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
        SettingsHaskellCPPCommand="$(basename $HaskellCPPCmd)"
        SettingsHaskellCPPFlags="$HaskellCPPArgs"
        SettingsLdCommand="$(basename $LdCmd)"
        SettingsArCommand="$(basename $ArCmd)"
        SettingsPerlCommand="$(basename $PerlCmd)"
        SettingsDllWrapCommand="$(basename $DllWrapCmd)"
        SettingsWindresCommand="$(basename $WindresCmd)"
        SettingsTouchCommand='$topdir/bin/touchy.exe'
495
    else
496 497 498 499 500 501
        SettingsCCompilerCommand="$CC"
        SettingsHaskellCPPCommand="$HaskellCPPCmd"
        SettingsHaskellCPPFlags="$HaskellCPPArgs"
        SettingsLdCommand="$LdCmd"
        SettingsArCommand="$ArCmd"
        SettingsPerlCommand="$PerlCmd"
502
        if test -z "$DllWrapCmd"
503 504 505
        then
            SettingsDllWrapCommand="/bin/false"
        else
506
            SettingsDllWrapCommand="$DllWrapCmd"
507
        fi
508
        if test -z "$WindresCmd"
509 510 511
        then
            SettingsWindresCommand="/bin/false"
        else
512
            SettingsWindresCommand="$WindresCmd"
513
        fi
Moritz Angermann's avatar
Moritz Angermann committed
514 515 516 517 518 519 520
       SettingsTouchCommand='touch'
    fi
    if test -z "$LibtoolCmd"
    then
      SettingsLibtoolCommand="libtool"
    else
      SettingsLibtoolCommand="$LibtoolCmd"
521 522 523 524 525 526 527 528 529 530 531 532
    fi
    if test -z "$LlcCmd"
    then
      SettingsLlcCommand="llc"
    else
      SettingsLlcCommand="$LlcCmd"
    fi
    if test -z "$OptCmd"
    then
      SettingsOptCommand="opt"
    else
      SettingsOptCommand="$OptCmd"
533
    fi
534
    SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
535
    SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2"
Ben Gamari's avatar
Ben Gamari committed
536
    SettingsCCompilerSupportsNoPie="$CONF_GCC_SUPPORTS_NO_PIE"
537
    SettingsLdFlags="$CONF_LD_LINKER_OPTS_STAGE2"
538
    AC_SUBST(SettingsCCompilerCommand)
539 540
    AC_SUBST(SettingsHaskellCPPCommand)
    AC_SUBST(SettingsHaskellCPPFlags)
541
    AC_SUBST(SettingsCCompilerFlags)
542
    AC_SUBST(SettingsCCompilerLinkFlags)
Ben Gamari's avatar
Ben Gamari committed
543
    AC_SUBST(SettingsCCompilerSupportsNoPie)
Simon Marlow's avatar
Simon Marlow committed
544
    AC_SUBST(SettingsLdCommand)
545
    AC_SUBST(SettingsLdFlags)
546
    AC_SUBST(SettingsArCommand)
547 548 549
    AC_SUBST(SettingsPerlCommand)
    AC_SUBST(SettingsDllWrapCommand)
    AC_SUBST(SettingsWindresCommand)
550
    AC_SUBST(SettingsLibtoolCommand)
551
    AC_SUBST(SettingsTouchCommand)
552 553
    AC_SUBST(SettingsLlcCommand)
    AC_SUBST(SettingsOptCommand)
554 555
])

556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597
# Helper for cloning a shell variable's state
AC_DEFUN([FP_COPY_SHELLVAR],
[if test -n "${$1+set}"; then $2="$$1"; else unset $2; fi ])

# FP_SET_CFLAGS_C99
# ----------------------------------
# figure out which CFLAGS are needed to place the compiler into C99 mode
# $1 is name of CC variable (unmodified)
# $2 is name of CC flags variable (augmented if needed)
# $3 is name of CPP flags variable (augmented if needed)
AC_DEFUN([FP_SET_CFLAGS_C99],
[
    dnl save current state of AC_PROG_CC_C99
    FP_COPY_SHELLVAR([CC],[fp_save_CC])
    FP_COPY_SHELLVAR([CFLAGS],[fp_save_CFLAGS])
    FP_COPY_SHELLVAR([CPPFLAGS],[fp_save_CPPFLAGS])
    FP_COPY_SHELLVAR([ac_cv_prog_cc_c99],[fp_save_cc_c99])
    dnl set local state
    CC="$$1"
    CFLAGS="$$2"
    CPPFLAGS="$$3"
    unset ac_cv_prog_cc_c99
    dnl perform detection
    _AC_PROG_CC_C99
    fp_cc_c99="$ac_cv_prog_cc_c99"
    case "x$ac_cv_prog_cc_c99" in
      x)   ;; # noop
      xno) AC_MSG_ERROR([C99-compatible compiler needed]) ;;
      *)   $2="$$2 $ac_cv_prog_cc_c99"
           $3="$$3 $ac_cv_prog_cc_c99"
           ;;
    esac
    dnl restore saved state
    FP_COPY_SHELLVAR([fp_save_CC],[CC])
    FP_COPY_SHELLVAR([fp_save_CFLAGS],[CFLAGS])
    FP_COPY_SHELLVAR([fp_save_CPPFLAGS],[CPPFLAGS])
    FP_COPY_SHELLVAR([fp_save_cc_c99],[ac_cv_prog_cc_c99])
    dnl cleanup
    unset fp_save_CC
    unset fp_save_CFLAGS
    unset fp_save_cc_c99
])
598

599 600
# FPTOOLS_SET_C_LD_FLAGS
# ----------------------------------
601
# Set the C, LD and CPP flags for a given platform.
602
# $1 is the platform
603 604 605 606
# $2 is the name of the CC flags variable
# $3 is the name of the linker flags variable when linking with gcc
# $4 is the name of the linker flags variable when linking with ld
# $5 is the name of the CPP flags variable
607 608
AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS],
[
609
    AC_MSG_CHECKING([Setting up $2, $3, $4 and $5])
610
    case $$1 in
611
    i386-*)
612 613 614 615 616
        # Workaround for #7799
        $2="$$2 -U__i686"
        ;;
    esac

617
    case $$1 in
618 619 620
    i386-unknown-mingw32)
        $2="$$2 -march=i686"
        ;;
621 622 623
    i386-portbld-freebsd*)
        $2="$$2 -march=i686"
        ;;
624 625 626 627 628 629
    x86_64-unknown-solaris2)
        $2="$$2 -m64"
        $3="$$3 -m64"
        $4="$$4 -m64"
        $5="$$5 -m64"
        ;;
630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
    alpha-*)
        # For now, to suppress the gcc warning "call-clobbered
        # register used for global register variable", we simply
        # disable all warnings altogether using the -w flag. Oh well.
        $2="$$2 -w -mieee -D_REENTRANT"
        $3="$$3 -w -mieee -D_REENTRANT"
        $5="$$5 -w -mieee -D_REENTRANT"
        ;;
    hppa*)
        # ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
        # (very nice, but too bad the HP /usr/include files don't agree.)
        $2="$$2 -D_HPUX_SOURCE"
        $3="$$3 -D_HPUX_SOURCE"
        $5="$$5 -D_HPUX_SOURCE"
        ;;
645 646
    arm*linux*)
        # On arm/linux and arm/android, tell gcc to generate Arm
647
        # instructions (ie not Thumb).
648
        $2="$$2 -marm"
649
        $3="$$3 -Wl,-z,noexecstack"
650 651 652 653
        $4="$$4 -z noexecstack"
        ;;

    aarch64*linux*)
654
        $3="$$3 -Wl,-z,noexecstack"
655
        $4="$$4 -z noexecstack"
656
        ;;
657 658

    powerpc-ibm-aix*)
659 660 661 662
        # We need `-D_THREAD_SAFE` to unlock the thread-local `errno`.
        $2="$$2 -D_THREAD_SAFE"
        $3="$$3 -D_THREAD_SAFE -Wl,-bnotextro"
        $4="$$4 -bnotextro"
663 664 665
        $5="$$5 -D_THREAD_SAFE"
        ;;

666 667 668
    x86_64-*-openbsd*)
        # We need -z wxneeded at least to link ghc-stage2 to workaround
        # W^X issue in GHCi on OpenBSD current (as of Aug 2016)
669
        $3="$$3 -Wl,-z,wxneeded"
670 671 672
        $4="$$4 -z wxneeded"
        ;;

673
    esac
674 675 676 677 678 679 680 681

    # If gcc knows about the stack protector, turn it off.
    # Otherwise the stack-smash handler gets triggered.
    echo 'int main(void) {return 0;}' > conftest.c
    if $CC -c conftest.c -fno-stack-protector > /dev/null 2>&1
    then
        $2="$$2 -fno-stack-protector"
    fi
682

Ian Lynagh's avatar
Ian Lynagh committed
683
    rm -f conftest.c conftest.o
Ian Lynagh's avatar
Ian Lynagh committed
684
    AC_MSG_RESULT([done])
685 686 687
])


688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
# FP_VISIBILITY_HIDDEN
# ----------------------------------
# Is the visibility hidden attribute supported?
AC_DEFUN([FP_VISIBILITY_HIDDEN],
[
    AC_MSG_CHECKING([whether __attribute__((visibility("hidden"))) is supported])
    echo '__attribute__((visibility("hidden"))) void foo(void) {}' > conftest.c
    if $CC -Wall -Werror -c conftest.c > /dev/null 2>&1
    then
        AC_MSG_RESULT([yes])
        AC_DEFINE(HAS_VISIBILITY_HIDDEN, 1, [Has visibility hidden])
    else
        AC_MSG_RESULT([no])
    fi
    rm -f conftest.c conftest.o
])


706 707
# FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN
# ----------------------------------
Gabor Greif's avatar
Gabor Greif committed
708
# Little endian ARM on Linux with some ABIs has big endian word order
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
# in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case.
AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN],
  [AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian],
    [AC_COMPILE_IFELSE(
      [AC_LANG_PROGRAM(
        [#include <endian.h>],
        [#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN
             return 0;
         #else
             not float word order big endian
         #endif]
      )],
      [fptools_cv_float_word_order_bigendian=yes],
      [fptools_cv_float_word_order_bigendian=no])
    ])
  case $fptools_cv_float_word_order_bigendian in
      yes)
          AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
          [Define to 1 if your processor stores words of floats with
           the most significant byte first]) ;;
  esac
])


733 734 735
# FP_PROG_CONTEXT_DIFF
# --------------------
# Figure out how to do context diffs. Sets the output variable ContextDiffCmd.
736 737
#
# Note: NeXTStep thinks diff'ing a file against itself is "trouble".
738 739 740 741 742
AC_DEFUN([FP_PROG_CONTEXT_DIFF],
[AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff],
[echo foo > conftest1
echo foo > conftest2
fp_cv_context_diff=no
Ian Lynagh's avatar
Ian Lynagh committed
743
for fp_var in '-U 1' '-u1' '-C 1' '-c1'
744 745 746 747 748 749 750 751 752 753 754 755 756
do
  if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
    fp_cv_context_diff="diff $fp_var"
    break
  fi
done])
if test x"$fp_cv_context_diff" = xno; then
   AC_MSG_ERROR([cannot figure out how to do context diffs])
fi
AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
])# FP_PROG_CONTEXT_DIFF


757
# FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
758
# --------------------------------------------------------
759 760 761
# Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
# compilation. Execute IF-FAILS when unable to determine the value. Works for
# cross-compilation, too.
762 763 764 765
#
# Implementation note: We are lazy and use an internal autoconf macro, but it
# is supported in autoconf versions 2.50 up to the actual 2.57, so there is
# little risk.
766 767 768 769 770 771 772 773 774 775
AC_DEFUN([FP_COMPUTE_INT],
[_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
])# FP_COMPUTE_INT


# FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES])
# ------------------------------------------------------------------
# A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a
# given type. Defines ALIGNMENT_TYPE.
AC_DEFUN([FP_CHECK_ALIGNMENT],
776
[AS_LITERAL_IF(m4_translit([[$1]], [*], [p]), [],
777
               [AC_FATAL([$0: requires literal arguments])])[]dnl
778 779 780
AC_CHECK_TYPE([$1], [], [], [$3])[]dnl
m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl
AC_CACHE_CHECK([alignment of $1], [fp_Cache],
781
[if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
782
  FP_COMPUTE_INT([offsetof(struct { char c; $1 ty; },ty)],
783
                 [fp_Cache],
784
                 [AC_INCLUDES_DEFAULT([$3])],
785 786
                 [AC_MSG_ERROR([cannot compute alignment ($1)
See `config.log' for more details.], [77])])
787
else
788 789 790 791
  fp_Cache=0
fi])[]dnl
AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl
m4_popdef([fp_Cache])[]dnl
792 793 794
])# FP_CHECK_ALIGNMENT


795 796 797 798 799 800 801 802 803 804

# FP_CHECK_SIZEOF_AND_ALIGNMENT(TYPE)
# ------------------------------------------------------------------
# Combines AC_CHECK_SIZEOF and FP_CHECK_ALIGNMENT.
AC_DEFUN([FP_CHECK_SIZEOF_AND_ALIGNMENT],
[AC_CHECK_SIZEOF([$1])
FP_CHECK_ALIGNMENT([$1])
])# FP_CHECK_SIZEOF_AND_ALIGNMENT


805 806 807 808 809 810 811 812 813 814 815
# FP_LEADING_UNDERSCORE
# ---------------------
# Test for determining whether symbol names have a leading underscore. We assume
# that they _haven't_ if anything goes wrong. Sets the output variable
# LeadingUnderscore to YES or NO and defines LEADING_UNDERSCORE correspondingly.
#
# Some nlist implementations seem to try to be compatible by ignoring a leading
# underscore sometimes (eg. FreeBSD). We therefore have to work around this by
# checking for *no* leading underscore first. Sigh.  --SDM
#
# Similarly on OpenBSD, but this test doesn't help. -- dons
816
#
817 818 819 820 821
AC_DEFUN([FP_LEADING_UNDERSCORE],
[AC_CHECK_LIB([elf], [nlist], [LIBS="-lelf $LIBS"])
AC_CACHE_CHECK([leading underscore in symbol names], [fptools_cv_leading_underscore], [
# Hack!: nlist() under Digital UNIX insist on there being an _,
# but symbol table listings shows none. What is going on here?!?
822
case $TargetPlatform in
823 824 825 826 827 828 829 830 831 832 833
    # Apples mach-o platforms use leading underscores
    *-apple-*) fptools_cv_leading_underscore=yes;;
    *linux-android*) fptools_cv_leading_underscore=no;;
    *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore
      case $build in
        i386-*2\.@<:@0-9@:>@ | i386-*3\.@<:@0-3@:>@ ) fptools_cv_leading_underscore=yes ;;
        *) fptools_cv_leading_underscore=no ;;
      esac ;;
    i386-unknown-mingw32) fptools_cv_leading_underscore=yes;;
    x86_64-unknown-mingw32) fptools_cv_leading_underscore=no;;
    *) AC_RUN_IFELSE([AC_LANG_SOURCE([[#ifdef HAVE_NLIST_H
sof's avatar
sof committed
834
#include <nlist.h>
835 836
struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
sof's avatar
sof committed
837 838
#endif

839 840 841
int main(argc, argv)
int argc;
char **argv;
sof's avatar
sof committed
842 843
{
#ifdef HAVE_NLIST_H
844 845 846
    if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
        exit(1);
    if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
847
        exit(0);
sof's avatar
sof committed
848 849
#endif
    exit(1);
850
}]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
851
;;
852 853 854 855 856
esac]);
AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`])
if test x"$fptools_cv_leading_underscore" = xyes; then
   AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.])
fi])# FP_LEADING_UNDERSCORE
sof's avatar
sof committed
857

858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885

# FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
# ----------------------------------------------------------------------------------
# Compare dotted version numbers VERSION1 and VERSION2 lexicographically according
# to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge).
AC_DEFUN([FP_COMPARE_VERSIONS],
[fp_version1=$1; fp_version2=$3
fp_save_IFS=$IFS; IFS='.'
while test x"$fp_version1" != x || test x"$fp_version2" != x
do

  set dummy $fp_version1; shift
  fp_num1=""
  test $[@%:@] = 0 || { fp_num1="[$]1"; shift; }
  test x"$fp_num1" = x && fp_num1="0"
  fp_version1="[$]*"

  set dummy $fp_version2; shift
  fp_num2=""
  test $[@%:@] = 0 || { fp_num2="[$]1"; shift; }
  test x"$fp_num2" = x && fp_num2="0"
  fp_version2="[$]*"

  test "$fp_num1" = "$fp_num2" || break;
done
IFS=$fp_save_IFS
AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl
])# FP_COMPARE_VERSIONS
886 887


sof's avatar
sof committed
888
dnl
889 890
dnl Check for Happy and version.
dnl If there's no installed Happy, we look
891
dnl for a happy source tree and point the build system at that instead.
892 893
dnl If you increase the minimum version requirement, please also update:
dnl https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Tools
894
dnl
895
AC_DEFUN([FPTOOLS_HAPPY],
896
[AC_PATH_PROG(HappyCmd,happy,)
897

sof's avatar
sof committed
898
AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
sof's avatar
sof committed
899
changequote(, )dnl
900
[if test x"$HappyCmd" != x; then
901
   fptools_cv_happy_version=`"$HappyCmd" -v |
rwbarton's avatar
rwbarton committed
902
              grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'` ;
sof's avatar
sof committed
903
else
sof's avatar
sof committed
904
   fptools_cv_happy_version="";
sof's avatar
sof committed
905
fi;
906
changequote([, ])dnl
907
])
Austin Seipp's avatar
Austin Seipp committed
908
if test ! -f compiler/parser/Parser.hs || test ! -f compiler/cmm/CmmParse.hs
909
then
910 911
    FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.19.4],
      [AC_MSG_ERROR([Happy version 1.19.4 or later is required to compile GHC.])])[]
912
fi
913
HappyVersion=$fptools_cv_happy_version;
sof's avatar
sof committed
914 915 916
AC_SUBST(HappyVersion)
])

917
dnl
918 919 920
dnl Check for Alex and version.
dnl If you increase the minimum version requirement, please also update:
dnl https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Tools
921
dnl
922
AC_DEFUN([FPTOOLS_ALEX],
923
[
924
AC_PATH_PROG(AlexCmd,alex,)
925

926 927
AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
changequote(, )dnl
928
[if test x"$AlexCmd" != x; then
929
   fptools_cv_alex_version=`"$AlexCmd" -v |
rwbarton's avatar
rwbarton committed
930
              grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'` ;
931 932 933 934 935
else
   fptools_cv_alex_version="";
fi;
changequote([, ])dnl
])
936 937
FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-ge],[3.0],
  [Alex3=YES],[Alex3=NO])
938 939
if test ! -f compiler/cmm/CmmLex.hs || test ! -f compiler/parser/Lexer.hs
then
940 941
    FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[3.1.0],
      [AC_MSG_ERROR([Alex version 3.1.0 or later is required to compile GHC.])])[]
942
fi
943 944
AlexVersion=$fptools_cv_alex_version;
AC_SUBST(AlexVersion)
945
AC_SUBST(Alex3)
946 947
])

sof's avatar
sof committed
948

949 950 951 952 953
# FP_PROG_LD_FLAG
# ---------------
# Sets the output variable $2 to $1 if ld supports the $1 flag.
# Otherwise the variable's value is empty.
AC_DEFUN([FP_PROG_LD_FLAG],
954
[
955
AC_CACHE_CHECK([whether ld understands $1], [fp_cv_$2],
956
[echo 'int foo() { return 0; }' > conftest.c
957
${CC-cc} -c conftest.c
958 959
if ${LdCmd} -r $1 -o conftest2.o conftest.o > /dev/null 2>&1; then
   fp_cv_$2=$1
960
else
961
   fp_cv_$2=
962
fi
963
rm -rf conftest*])
964 965 966 967
$2=$fp_cv_$2
])# FP_PROG_LD_FLAG


968 969 970 971 972 973 974 975
# FP_PROG_LD_BUILD_ID
# ------------

# Sets the output variable LdHasBuildId to YES if ld supports
# --build-id, or NO otherwise.
AC_DEFUN([FP_PROG_LD_BUILD_ID],
[
AC_CACHE_CHECK([whether ld understands --build-id], [fp_cv_ld_build_id],
976
[echo 'int foo() { return 0; }' > conftest.c
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992
${CC-cc} -c conftest.c
if ${LdCmd} -r --build-id=none -o conftest2.o conftest.o > /dev/null 2>&1; then
   fp_cv_ld_build_id=yes
else
   fp_cv_ld_build_id=no
fi
rm -rf conftest*])
if test "$fp_cv_ld_build_id" = yes; then
  LdHasBuildId=YES
else
  LdHasBuildId=NO
fi
AC_SUBST([LdHasBuildId])
])# FP_PROG_LD_BUILD_ID


993 994 995 996
# FP_PROG_LD_IS_GNU
# -----------------
# Sets the output variable LdIsGNULd to YES or NO, depending on whether it is
# GNU ld or not.
997
AC_DEFUN([FP_PROG_LD_IS_GNU],[
998
AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld],
999 1000
[[if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
  fp_cv_gnu_ld=YES
1001
else
1002 1003 1004
  fp_cv_gnu_ld=NO
fi]])
AC_SUBST([LdIsGNULd],["$fp_cv_gnu_ld"])
1005
])# FP_PROG_LD_IS_GNU
1006

sof's avatar
sof committed
1007

1008 1009 1010 1011 1012 1013 1014 1015
# FP_PROG_LD_NO_COMPACT_UNWIND
# ----------------------------

# Sets the output variable LdHasNoCompactUnwind to YES if ld supports
# -no_compact_unwind, or NO otherwise.
AC_DEFUN([FP_PROG_LD_NO_COMPACT_UNWIND],
[
AC_CACHE_CHECK([whether ld understands -no_compact_unwind], [fp_cv_ld_no_compact_unwind],
1016
[echo 'int foo() { return 0; }' > conftest.c
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
${CC-cc} -c conftest.c
if ${LdCmd} -r -no_compact_unwind -o conftest2.o conftest.o > /dev/null 2>&1; then
   fp_cv_ld_no_compact_unwind=yes
else
   fp_cv_ld_no_compact_unwind=no
fi
rm -rf conftest*])
if test "$fp_cv_ld_no_compact_unwind" = yes; then
  LdHasNoCompactUnwind=YES
else
  LdHasNoCompactUnwind=NO
fi
AC_SUBST([LdHasNoCompactUnwind])
])# FP_PROG_LD_NO_COMPACT_UNWIND


1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064
# FP_PROG_LD_FILELIST
# -------------------

# Sets the output variable LdHasFilelist to YES if ld supports
# -filelist, or NO otherwise.
AC_DEFUN([FP_PROG_LD_FILELIST],
[
AC_CACHE_CHECK([whether ld understands -filelist], [fp_cv_ld_has_filelist],
[
    echo 'int foo() { return 0; }' > conftest1.c
    echo 'int bar() { return 0; }' > conftest2.c
    ${CC-cc} -c conftest1.c
    ${CC-cc} -c conftest2.c
    echo conftest1.o  > conftest.o-files
    echo conftest2.o >> conftest.o-files
    if ${LdCmd} -r -filelist conftest.o-files -o conftest.o > /dev/null 2>&1
    then
        fp_cv_ld_has_filelist=yes
    else
        fp_cv_ld_has_filelist=no
    fi
    rm -rf conftest*
])
if test "$fp_cv_ld_has_filelist" = yes; then
    LdHasFilelist=YES
else
    LdHasFilelist=NO
fi
AC_SUBST([LdHasFilelist])
])# FP_PROG_LD_FILELIST


1065 1066
# FP_PROG_AR
# ----------
1067
# Sets fp_prog_ar to a path to ar. Exits if no ar can be found
1068
AC_DEFUN([FP_PROG_AR],
1069 1070 1071
[if test -z "$fp_prog_ar"; then
  AC_PATH_PROG([fp_prog_ar], [ar])
fi
1072
if test -z "$fp_prog_ar"; then
1073
  AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library])
sof's avatar
sof committed
1074
fi
1075 1076 1077 1078 1079 1080 1081 1082
])# FP_PROG_AR


# FP_PROG_AR_IS_GNU
# -----------------
# Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not.
AC_DEFUN([FP_PROG_AR_IS_GNU],
[AC_REQUIRE([FP_PROG_AR])
Ian Lynagh's avatar
Ian Lynagh committed
1083 1084
AC_CACHE_CHECK([whether $fp_prog_ar is GNU ar], [fp_cv_prog_ar_is_gnu],
[if "$fp_prog_ar" --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
1085 1086 1087 1088 1089
  fp_cv_prog_ar_is_gnu=yes
else
  fp_cv_prog_ar_is_gnu=no
fi])
fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu
Ian Lynagh's avatar
Ian Lynagh committed
1090
AC_SUBST([ArIsGNUAr], [`echo $fp_prog_ar_is_gnu | tr 'a-z' 'A-Z'`])
1091 1092 1093
])# FP_PROG_AR_IS_GNU


1094 1095 1096 1097 1098 1099 1100
# FP_PROG_AR_SUPPORTS_ATFILE
# -----------------
# Sets fp_prog_ar_supports_atfile to yes or no, depending on whether
# or not it supports the @file syntax
AC_DEFUN([FP_PROG_AR_SUPPORTS_ATFILE],
[AC_REQUIRE([FP_PROG_AR])
 AC_REQUIRE([FP_PROG_AR_ARGS])
Ian Lynagh's avatar
Ian Lynagh committed
1101
AC_CACHE_CHECK([whether $fp_prog_ar supports @file], [fp_cv_prog_ar_supports_atfile],
1102 1103 1104 1105 1106
[
rm -f conftest*
touch conftest.file
echo conftest.file  > conftest.atfile
echo conftest.file >> conftest.atfile
Ian Lynagh's avatar
Ian Lynagh committed
1107 1108
"$fp_prog_ar" $fp_prog_ar_args conftest.a @conftest.atfile > /dev/null 2>&1
fp_prog_ar_supports_atfile_tmp=`"$fp_prog_ar" t conftest.a 2> /dev/null | grep -c conftest.file`
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
rm -f conftest*
if test "$fp_prog_ar_supports_atfile_tmp" -eq 2
then
  fp_cv_prog_ar_supports_atfile=yes
else
  fp_cv_prog_ar_supports_atfile=no
fi])
fp_prog_ar_supports_atfile=$fp_cv_prog_ar_supports_atfile
AC_SUBST([ArSupportsAtFile], [`echo $fp_prog_ar_supports_atfile | tr 'a-z' 'A-Z'`])
])# FP_PROG_AR_SUPPORTS_ATFILE

1120 1121 1122
# FP_PROG_AR_ARGS
# ---------------
# Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd
1123
# to an invocation of ar including these arguments.
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136
AC_DEFUN([FP_PROG_AR_ARGS],
[AC_REQUIRE([FP_PROG_AR_IS_GNU])
AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args],
[
# GNU ar needs special treatment: it appears to have problems with
# object files with the same name if you use the 's' modifier, but
# simple 'ar q' works fine, and doesn't need a separate ranlib.
if test $fp_prog_ar_is_gnu = yes; then
  fp_cv_prog_ar_args="q"
else
  touch conftest.dummy
  for fp_var in clqsZ clqs cqs clq cq ; do
     rm -f conftest.a
Ian Lynagh's avatar
Ian Lynagh committed
1137
     if "$fp_prog_ar" $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then
1138 1139 1140 1141 1142 1143
        fp_cv_prog_ar_args=$fp_var
        break
     fi
  done
  rm -f conftest*
  if test -z "$fp_cv_prog_ar_args"; then
Ian Lynagh's avatar
Ian Lynagh committed
1144
    AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar])
1145 1146 1147
  fi
fi])
fp_prog_ar_args=$fp_cv_prog_ar_args
1148 1149 1150
if test "$HostOS" != "mingw32"; then
    ArCmd = "$(cygpath -m $ArCmd)"
fi
1151 1152
AC_SUBST([ArCmd], ["$fp_prog_ar"])
AC_SUBST([ArArgs], ["$fp_prog_ar_args"])
1153 1154 1155 1156 1157 1158

])# FP_PROG_AR_ARGS


# FP_PROG_AR_NEEDS_RANLIB
# -----------------------
1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
# Sets the output variable RANLIB_CMD to "ranlib" if it is needed and
# found, to "true" otherwise. Sets REAL_RANLIB_CMD to the ranlib program,
# even if we don't need ranlib (libffi might still need it).
AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB],[
    AC_REQUIRE([FP_PROG_AR_IS_GNU])
    AC_REQUIRE([FP_PROG_AR_ARGS])
    AC_REQUIRE([AC_PROG_CC])

    AC_PROG_RANLIB

    if test $fp_prog_ar_is_gnu = yes
    then
        fp_cv_prog_ar_needs_ranlib=no
1172
    elif test "$TargetVendor_CPP" = "apple"
1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
    then
        # It's quite tedious to check for Apple's crazy timestamps in
        # .a files, so we hardcode it.
        fp_cv_prog_ar_needs_ranlib=yes
    else
        case $fp_prog_ar_args in
        *s*)
            fp_cv_prog_ar_needs_ranlib=no;;
        *)
            fp_cv_prog_ar_needs_ranlib=yes;;
        esac
    fi

1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
    # workaround for AC_PROG_RANLIB which sets RANLIB to `:' when
    # ranlib is missing on the target OS. The problem is that
    # ghc-cabal cannot execute `:' which is a shell built-in but can
    # execute `true' which is usually simple program supported by the
    # OS.
    # Fixes #8795
    if test "$RANLIB" = ":"
    then
        RANLIB="true"
    fi
1196 1197 1198 1199 1200 1201 1202 1203 1204
    REAL_RANLIB_CMD="$RANLIB"
    if test $fp_cv_prog_ar_needs_ranlib = yes
    then
        RANLIB_CMD="$RANLIB"
    else
        RANLIB_CMD="true"
    fi
    AC_SUBST([REAL_RANLIB_CMD])
    AC_SUBST([RANLIB_CMD])
1205 1206 1207
])# FP_PROG_AR_NEEDS_RANLIB


1208
# FP_GCC_VERSION
1209 1210
# -----------
# Extra testing of the result AC_PROG_CC, testing the gcc version no. Sets the
1211
# output variable GccVersion.
1212
AC_DEFUN([FP_GCC_VERSION],
1213
[AC_REQUIRE([AC_PROG_CC])
1214
if test -z "$CC"
1215
then
1216 1217
  AC_MSG_ERROR([gcc is required])
fi
1218
GccLT34=NO
1219
GccLT44=NO
1220
GccLT46=NO
1221
AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version],
1222 1223 1224 1225 1226 1227 1228 1229
[
    fp_cv_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"
    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [3.0],
                        [AC_MSG_ERROR([Need at least gcc version 3.0 (3.4+ recommended)])])
    # See #2770: gcc 2.95 doesn't work any more, apparently.  There probably
    # isn't a very good reason for that, but for now just make configure
    # fail.
    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [3.4], GccLT34=YES)
1230
    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.4], GccLT44=YES)
1231
    FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [4.6], GccLT46=YES)
1232
])
1233
AC_SUBST([GccVersion], [$fp_cv_gcc_version])
1234
AC_SUBST(GccLT34)
1235
AC_SUBST(GccLT44)
1236
AC_SUBST(GccLT46)
1237
])# FP_GCC_VERSION
1238

1239
dnl Check to see if the C compiler is clang or llvm-gcc
1240
dnl
1241
GccIsClang=NO
1242 1243
AC_DEFUN([FP_CC_LLVM_BACKEND],
[AC_REQUIRE([AC_PROG_CC])
1244
AC_MSG_CHECKING([whether C compiler is clang])
1245
$CC -x c /dev/null -dM -E > conftest.txt 2>&1
1246 1247
if grep "__clang__" conftest.txt >/dev/null 2>&1; then
  AC_SUBST([CC_CLANG_BACKEND], [1])
1248
  AC_SUBST([CC_LLVM_BACKEND], [1])
1249
  GccIsClang=YES
1250 1251 1252
  AC_MSG_RESULT([yes])
else
  AC_MSG_RESULT([no])
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262
  AC_MSG_CHECKING([whether C compiler has an LLVM back end])
  if grep "__llvm__" conftest.txt >/dev/null 2>&1; then
    AC_SUBST([CC_CLANG_BACKEND], [0])
    AC_SUBST([CC_LLVM_BACKEND], [1])
    AC_MSG_RESULT([yes])
  else
    AC_SUBST([CC_CLANG_BACKEND], [0])
    AC_SUBST([CC_LLVM_BACKEND], [0])
    AC_MSG_RESULT([no])
  fi
1263
fi
1264
AC_SUBST(GccIsClang)
1265

1266 1267 1268
rm -f conftest.txt
])

Ben Gamari's avatar
Ben Gamari committed
1269 1270 1271 1272 1273 1274 1275 1276 1277
# FP_GCC_SUPPORTS_NO_PIE
# ----------------------
# Does gcc support the -no-pie option? If so we should pass it to gcc when
# joining objects since -pie may be enabled by default.
AC_DEFUN([FP_GCC_SUPPORTS_NO_PIE],
[
   AC_REQUIRE([AC_PROG_CC])
   AC_MSG_CHECKING([whether GCC supports -no-pie])
   echo 'int main() { return 0; }' > conftest.c
1278 1279
   # Some GCC versions only warn when passed an unrecognized flag.
   if $CC -no-pie -x c /dev/null -dM -E > conftest.txt 2>&1 && ! grep -i unrecognized conftest.txt > /dev/null 2>&1; then
Ben Gamari's avatar
Ben Gamari committed
1280 1281 1282 1283 1284 1285 1286 1287 1288
       CONF_GCC_SUPPORTS_NO_PIE=YES
       AC_MSG_RESULT([yes])
   else
       CONF_GCC_SUPPORTS_NO_PIE=NO
       AC_MSG_RESULT([no])
   fi
   rm -f conftest.c conftest.o conftest
])

sof's avatar
sof committed
1289
dnl Small feature test for perl version. Assumes PerlCmd
1290 1291 1292 1293
dnl contains path to perl binary.
dnl
dnl (Perl versions prior to v5.6 does not contain the string "v5";
dnl instead they display version strings such as "version 5.005".)
sof's avatar
sof committed
1294
dnl
1295
AC_DEFUN([FPTOOLS_CHECK_PERL_VERSION],
sof's avatar
sof committed
1296
[$PerlCmd -v >conftest.out 2>&1
1297
   if grep "v5" conftest.out >/dev/null 2>&1; then
1298 1299
      :
   else
1300
      AC_MSG_ERROR([your version of perl probably won't work, try upgrading it.])
1301
   fi
sof's avatar
sof committed
1302 1303
rm -fr conftest*
])
1304

1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319

# FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR,
#               [VALUE-IF-NOT-FOUND], [PATH], [REJECT])
# -----------------------------------------------------
# HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path
# of PROG-TO-CHECK-FOR when found.
AC_DEFUN([FP_CHECK_PROG],
[AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl
)# FP_CHECK_PROC


# FP_PROG_FIND
# ------------
# Find a non-WinDoze version of the "find" utility.
AC_DEFUN([FP_PROG_FIND],
Ian Lynagh's avatar
Ian Lynagh committed
1320
[AC_PATH_PROGS([fp_prog_find], [gfind find], find)
1321 1322 1323 1324 1325
echo foo > conftest.txt
$fp_prog_find conftest.txt -print > conftest.out 2>&1
if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
  # OK, looks like a real "find".
  FindCmd="$fp_prog_find"
sof's avatar
sof committed
1326
else
1327 1328 1329
  # Found a poor WinDoze version of "find", ignore it.
  AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it])
  FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find])
sof's avatar
sof committed
1330
fi
1331 1332 1333 1334
rm -f conftest.txt conftest.out
AC_SUBST([FindCmd])[]dnl
])# FP_PROG_FIND

sof's avatar
sof committed
1335

1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
# FP_PROG_SORT
# ------------
# Find a Unix-like sort
AC_DEFUN([FP_PROG_SORT],
[AC_PATH_PROG([fp_prog_sort], [sort])
echo conwip > conftest.txt
$fp_prog_sort -f conftest.txt > conftest.out 2>&1
if grep 'conwip' conftest.out > /dev/null 2>&1 ; then
  # The goods
  SortCmd="$fp_prog_sort"
else
  # Summink else..pick next one.
  AC_MSG_WARN([$fp_prog_sort looks like a non-*nix sort, ignoring it])
  FP_CHECK_PROG([SortCmd], [sort], [], [], [$fp_prog_sort])
fi
rm -f conftest.txt conftest.out
AC_SUBST([SortCmd])[]dnl
])# FP_PROG_SORT


1356 1357 1358 1359 1360 1361 1362
dnl
dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the
dnl values of the second argument to the result of running
dnl the commands given by the third. It does not cache its
dnl result, so it is suitable for checks which should be
dnl run every time.
dnl
1363
AC_DEFUN([FPTOOLS_NOCACHE_CHECK],
1364 1365 1366 1367 1368
[AC_MSG_CHECKING([$1])
 $3
 AC_MSG_RESULT([$][$2])
])

1369 1370 1371
dnl
dnl FPTOOLS_GHC_VERSION(version)
dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel])
1372
dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel)
1373 1374
dnl
dnl Test for version of installed ghc.  Uses $GHC.
1375
dnl [original version pinched from c2hs]
1376
dnl
1377
AC_DEFUN([FPTOOLS_GHC_VERSION],
1378
[FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
1379
["${WithGhc-ghc}" --version > conftestghc 2>&1
1380
  cat conftestghc >&AS_MESSAGE_LOG_FD
1381 1382
#Useless Use Of cat award...
  fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
1383
  rm -fr conftest*
1384
  if test "[$]fptools_version_of_ghc" = ""
1385
  then
1386 1387 1388 1389 1390 1391 1392
    fptools_version_of_ghc='unknown'
  fi
fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
#
if test "[$]fptools_version_of_ghc[_pl]" = ""
1393
then
1394 1395
  fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
  fptools_version_of_ghc[_pl]="0"
1396
else
1397
  fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
1398
fi
1399
#
1400
ifelse($#, [1], [dnl
1401
[$1]="[$]fptools_version_of_ghc[_all]"
1402
], $#, [2], [dnl
1403 1404
[$1]="[$]fptools_version_of_ghc[_major]"
[$2]="[$]fptools_version_of_ghc[_minor]"
1405
], $#, [3], [dnl
1406 1407 1408
[$1]="[$]fptools_version_of_ghc[_major]"
[$2]="[$]fptools_version_of_ghc[_minor]"
[$3]="[$]fptools_version_of_ghc[_pl]"
1409
], $#, [4], [dnl
1410 1411 1412 1413 1414 1415
[$1]="[$]fptools_version_of_ghc[_all]"
[$2]="[$]fptools_version_of_ghc[_major]"
[$3]="[$]fptools_version_of_ghc[_minor]"
[$4]="[$]fptools_version_of_ghc[_pl]"
])
])
1416
])dnl
1417 1418


1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
# FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# ---------------------------------------------------------------------------------
# A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
# additional flexibility of specifying the PROLOGUE and BODY.
AC_DEFUN([FP_CHECK_FUNC],
[AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl
AC_CACHE_CHECK([for $1], fp_func,
[AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
                [AS_VAR_SET(fp_func, yes)],
                [AS_VAR_SET(fp_func, no)])])
AS_IF([test AS_VAR_GET(fp_func) = yes],
      [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1],
                [Define to 1 if you have the `]$1[' function.]) $4],
      [$5])dnl
AS_VAR_POPDEF([fp_func])dnl
])# FP_CHECK_FUNC

1436 1437 1438
# FP_PROG_GHC_PKG
# ----------------
# Try to find a ghc-pkg matching the ghc mentioned in the environment variable
Ian Lynagh's avatar
Ian Lynagh committed
1439
# WithGhc. Sets the output variable GhcPkgCmd.
1440 1441
AC_DEFUN([FP_PROG_GHC_PKG],
[AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg,
Ian Lynagh's avatar
Ian Lynagh committed
1442 1443 1444 1445 1446 1447
[
# If we are told to use ghc-stage2, then we're using an in-tree
# compiler. In this case, we just want ghc-pkg, not ghc-pkg-stage2,
# so we sed off -stage[0-9]$. However, if we are told to use
# ghc-6.12.1 then we want to use ghc-pkg-6.12.1, so we keep any
# other suffix.
1448
fp_ghc_pkg_guess=`echo "$WithGhc" | sed -e 's/-stage@<:@0-9@:>@$//' -e 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'`
Ian Lynagh's avatar
Ian Lynagh committed
1449
if "$fp_ghc_pkg_guess" list > /dev/null 2>&1; then
1450
  fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess
1451
else
Ian Lynagh's avatar
Ian Lynagh committed
1452
  AC_MSG_ERROR([Cannot find matching ghc-pkg])
1453
fi])
Ian Lynagh's avatar
Ian Lynagh committed
1454 1455 1456
GhcPkgCmd=$fp_cv_matching_ghc_pkg
AC_SUBST([GhcPkgCmd])
])# FP_PROG_GHC_PKG
1457

1458

1459 1460 1461 1462 1463 1464 1465 1466 1467
# FP_GCC_EXTRA_FLAGS
# ------------------
# Determine which extra flags we need to pass gcc when we invoke it
# to compile .hc code.
#
# -fwrapv is needed for gcc to emit well-behaved code in the presence of
# integer wrap around. (Trac #952)
#
AC_DEFUN([FP_GCC_EXTRA_FLAGS],
1468
[AC_REQUIRE([FP_GCC_VERSION])
1469 1470
AC_CACHE_CHECK([for extra options to pass gcc when compiling via C], [fp_cv_gcc_extra_opts],
[fp_cv_gcc_extra_opts=
1471
 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [3.4],
1472 1473
  [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fwrapv"],
  [])
1474 1475 1476
 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [4.0],
  [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-builtin"],
  [])
1477 1478 1479
])
AC_SUBST([GccExtraViaCOpts],$fp_cv_gcc_extra_opts)
])
1480

1481

1482 1483 1484
# FP_SETUP_PROJECT_VERSION
# ---------------------
AC_DEFUN([FP_SETUP_PROJECT_VERSION],
1485 1486 1487
[
if test "$RELEASE" = "NO"; then
    AC_MSG_CHECKING([for GHC version date])
1488 1489
    if test -f VERSION_DATE; then
        PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE`
Ian Lynagh's avatar
Ian Lynagh committed
1490
        AC_MSG_RESULT(given $PACKAGE_VERSION)
1491 1492
    elif test -d .git; then
        changequote(, )dnl
1493 1494
        ver_posixtime=`git log -1 --pretty=format:%ct`
        ver_date=`perl -MPOSIX -e "print strftime('%Y%m%d', gmtime($ver_posixtime));"`
1495 1496
        if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else
        changequote([, ])dnl
1497
                AC_MSG_ERROR([failed to detect version date: check that git and perl are in your path])
1498 1499 1500
        fi
        PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
        AC_MSG_RESULT(inferred $PACKAGE_VERSION)
1501
    elif test -f VERSION; then
1502
        PACKAGE_VERSION=`cat VERSION`
Ian Lynagh's avatar
Ian Lynagh committed
1503
        AC_MSG_RESULT(given $PACKAGE_VERSION)
1504
    else
1505
        AC_MSG_WARN([cannot determine snapshot version: no .git directory and no VERSION file])
Gabor Greif's avatar
Gabor Greif committed
1506
        dnl We'd really rather this case didn't happen, but it might
1507 1508 1509 1510 1511 1512 1513 1514
        dnl do (in particular, people using lndir trees may find that
        dnl the build system can't find any other date). If it does
        dnl happen, then we use the current date.
        dnl This way we get some idea about how recent a build is.
        dnl It also means that packages built for 2 different builds
        dnl will probably use different version numbers, so things are
        dnl less likely to go wrong.
        PACKAGE_VERSION=${PACKAGE_VERSION}.`date +%Y%m%d`
1515
    fi
1516
fi
1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533

    AC_MSG_CHECKING([for GHC Git commit id])
    if test -d .git; then
        git_commit_id=`git rev-parse HEAD`
        if test -n "$git_commit_id" 2>&1 >/dev/null; then true; else
            AC_MSG_ERROR([failed to detect revision: check that git is in your path])
        fi
        PACKAGE_GIT_COMMIT_ID=$git_commit_id
        AC_MSG_RESULT(inferred $PACKAGE_GIT_COMMIT_ID)
    elif test -f GIT_COMMIT_ID; then
        PACKAGE_GIT_COMMIT_ID=`cat GIT_COMMIT_ID`
        AC_MSG_RESULT(given $PACKAGE_GIT_COMMIT_ID)
    else
        AC_MSG_WARN([cannot determine snapshot revision: no .git directory and no 'GIT_COMMIT_ID' file])
        PACKAGE_GIT_COMMIT_ID="0000000000000000000000000000000000000000"
    fi

1534 1535

# Some renamings