configure.ac 46.2 KB
Newer Older
1
dnl == autoconf source for the Glasgow FP tools ==
2
dnl (run "grep '^dnl \*' configure.ac | sed -e 's/dnl / /g; s/\*\*/   +/g;'"
sof's avatar
sof committed
3
dnl  (or some such) to see the outline of this file)
4 5
dnl
#
6
# (c) The University of Glasgow 1994-2012
7
#
8
# Configure script template for GHC
9
#
10
# Process with 'autoreconf' to get a working configure script.
11
#
sof's avatar
sof committed
12 13 14 15
# For the generated configure script, do "./configure --help" to
# see what flags are available. (Better yet, read the documentation!)
#

16
AC_INIT([The Glorious Glasgow Haskell Compilation System], [8.9.0], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
17

18
# Set this to YES for a released version, otherwise NO
19
: ${RELEASE=NO}
20

21
# The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line
22
# above.  If this is not a released version, then we will append the
23
# date to the version number (e.g. 7.4.20111220).  The date is
24
# constructed by finding the date of the most recent patch in the
25
# git repository.  If this is a source distribution (not a git
26 27 28
# checkout), then we ship a file 'VERSION' containing the full version
# when the source distribution was created.

29
if test ! -f mk/config.h.in; then
Ben Gamari's avatar
Ben Gamari committed
30
   echo "mk/config.h.in doesn't exist: perhaps you haven't run 'python3 boot'?"
31 32 33
   exit 1
fi

34 35 36 37 38
dnl this makes sure `./configure --target=<cross-compile-target>`
dnl works as expected, since we're slightly modifying how Autoconf
dnl interprets build/host/target and how this interacts with $CC tests
test -n "$target_alias" && ac_tool_prefix=$target_alias-

39
dnl ----------------------------------------------------------
40
dnl ** Find unixy sort and find commands,
41 42 43 44
dnl ** which are needed by FP_SETUP_PROJECT_VERSION

dnl ** Find find command (for Win32's benefit)
FP_PROG_FIND
45
FP_PROG_SORT
46 47

dnl ----------------------------------------------------------
48 49 50 51
FP_SETUP_PROJECT_VERSION

# Hmmm, we fix the RPM release number to 1 here... Is this convenient?
AC_SUBST([release], [1])
52

53
# First off, a distrib sanity check..
54
AC_CONFIG_SRCDIR([mk/config.mk.in])
55

56 57 58 59 60 61 62 63
dnl * We require autoconf version 2.69 due to
dnl   https://bugs.ruby-lang.org/issues/8179. Also see #14910.
dnl * We need 2.50 due to the use of AC_SYS_LARGEFILE and AC_MSG_NOTICE.
dnl * We need 2.52 due to the use of AS_TR_CPP and AS_TR_SH.
dnl * Using autoconf 2.59 started to give nonsense like this
dnl     #define SIZEOF_CHAR 0
dnl   recently.
AC_PREREQ([2.69])
64

65 66 67
# -------------------------------------------------------------------------
# Prepare to generate the following header files
#
68 69
#
AC_CONFIG_HEADER(mk/config.h)
70

sof's avatar
sof committed
71
# No, semi-sadly, we don't do `--srcdir'...
72
if test x"$srcdir" != 'x.' ; then
73
    echo "This configuration does not support the \`--srcdir' option.."
74 75 76
    exit 1
fi

sof's avatar
sof committed
77 78 79 80 81 82 83 84 85 86
dnl --------------------------------------------------------------
dnl * Project specific configuration options
dnl --------------------------------------------------------------
dnl What follows is a bunch of options that can either be configured
dnl through command line options to the configure script or by
dnl supplying defns in the build tree's mk/build.mk. Having the option to
dnl use either is considered a Feature.

dnl ** What command to use to compile compiler sources ?
dnl --------------------------------------------------------------
87

88 89
AC_ARG_VAR(GHC,[Use as the path to GHC [default=autodetect]])
AC_PATH_PROG([GHC], [ghc])
90
AC_ARG_WITH([ghc],
91 92 93
        AS_HELP_STRING([--with-ghc=ARG], [Use ARG as the path to ghc (obsolete, use GHC=ARG instead) [default=autodetect]]),
        AC_MSG_ERROR([--with-ghc=$withval is obsolete (use './configure GHC=$withval' or 'GHC=$withval ./configure' instead)]))
AC_SUBST(WithGhc,$GHC)
94

Ian Lynagh's avatar
Ian Lynagh committed
95 96 97 98 99 100 101
AC_ARG_ENABLE(bootstrap-with-devel-snapshot,
[AC_HELP_STRING([--enable-bootstrap-with-devel-snapshot],
                [Allow bootstrapping using a development snapshot of GHC.  This is not guaranteed to work.])],
        EnableBootstrapWithDevelSnaphost=YES,
        EnableBootstrapWithDevelSnaphost=NO
)

102 103 104 105 106 107
AC_ARG_ENABLE(tarballs-autodownload,
[AC_HELP_STRING([--enable-tarballs-autodownload],
                [Automatically download Windows distribution binaries if needed.])],
        TarballsAutodownload=YES,
        TarballsAutodownload=NO
)
108

109 110 111 112 113 114 115 116 117 118 119
AC_ARG_ENABLE(distro-toolchain,
[AC_HELP_STRING([--enable-distro-toolchain],
                [Do not use bundled Windows toolchain binaries.])],
        EnableDistroToolchain=YES,
        EnableDistroToolchain=NO
)

if test "$EnableDistroToolchain" = "YES"; then
  TarballsAutodownload=NO
fi

120 121 122 123
dnl CC_STAGE0 is like the "previous" variable CC (inherited by CC_STAGE[123])
dnl but instead used by stage0 for bootstrapping stage1
AC_ARG_VAR(CC_STAGE0, [C compiler command (bootstrap)])

124 125
if test "$WithGhc" != ""; then
  FPTOOLS_GHC_VERSION([GhcVersion], [GhcMajVersion], [GhcMinVersion], [GhcPatchLevel])dnl
Ian Lynagh's avatar
Ian Lynagh committed
126

127
  if test "$GhcMajVersion" = "unknown" || test "$GhcMinVersion" = "unknown"; then
128
     AC_MSG_ERROR([Cannot determine the version of $WithGhc.  Is it really GHC?])
Ian Lynagh's avatar
Ian Lynagh committed
129 130
  fi

131 132 133 134
  AC_SUBST(GhcVersion)dnl
  AC_SUBST(GhcMajVersion)dnl
  AC_SUBST(GhcMinVersion)dnl
  AC_SUBST(GhcPatchLevel)dnl
135 136
  GhcMinVersion2=`echo "$GhcMinVersion" | sed 's/^\\(.\\)$/0\\1/'`
  GhcCanonVersion="$GhcMajVersion$GhcMinVersion2"
137

138 139 140 141 142
  dnl infer CC_STAGE0 from `ghc --info` unless explicitly set by user
  if test -z "$CC_STAGE0"; then
    BOOTSTRAPPING_GHC_INFO_FIELD([CC_STAGE0],[C compiler command])
  fi

143
  BOOTSTRAPPING_GHC_INFO_FIELD([LD_STAGE0],[ld command])
144 145 146
  BOOTSTRAPPING_GHC_INFO_FIELD([AR_STAGE0],[ar command])
  BOOTSTRAPPING_GHC_INFO_FIELD([AR_OPTS_STAGE0],[ar flags])
  BOOTSTRAPPING_GHC_INFO_FIELD([ArSupportsAtFile_STAGE0],[ar supports at file])
147 148
fi

149
dnl ** Must have GHC to build GHC
ian@well-typed.com's avatar
ian@well-typed.com committed
150 151 152 153
if test "$WithGhc" = ""
then
    AC_MSG_ERROR([GHC is required.])
fi
154 155
FP_COMPARE_VERSIONS([$GhcVersion],[-lt],[8.6],
    [AC_MSG_ERROR([GHC version 8.6 or later is required to compile GHC.])])
Simon Marlow's avatar
Simon Marlow committed
156

ian@well-typed.com's avatar
ian@well-typed.com committed
157 158 159 160
if test `expr $GhcMinVersion % 2` = "1"
then
    if test "$EnableBootstrapWithDevelSnaphost" = "NO"
    then
Simon Marlow's avatar
Simon Marlow committed
161 162 163 164
        AC_MSG_ERROR([
     $WithGhc is a development snapshot of GHC, version $GhcVersion.
     Bootstrapping using this version of GHC is not supported, and may not
     work.  Use --enable-bootstrap-with-devel-snapshot to try it anyway,
165
     or 'GHC=' to specify a different GHC to use.])
ian@well-typed.com's avatar
ian@well-typed.com committed
166 167
    fi
fi
168

169 170 171
# GHC is passed to Cabal, so we need a native path
if test "${WithGhc}" != ""
then
172
    ghc_host_os=`"${WithGhc}" +RTS --info | grep 'Host OS' | sed -e 's/.*, "//' -e 's/")//'`
173

174
    if test "$ghc_host_os" = "mingw32"
175
    then
176 177 178 179 180 181 182
        if test "${OSTYPE}" = "msys"
        then
            WithGhc=`echo "${WithGhc}" | sed "s#^/\([a-zA-Z]\)/#\1:/#"`
        else
            # Canonicalise to <drive>:/path/to/ghc
            WithGhc=`cygpath -m "${WithGhc}"`
        fi
183 184 185 186 187
        echo "GHC path canonicalised to: ${WithGhc}"
    fi
fi
AC_SUBST([WithGhc])

188 189 190
dnl ** Without optimization some INLINE trickery fails for GHCi
SRC_CC_OPTS="-O"

191 192 193
dnl--------------------------------------------------------------------
dnl * Choose host(/target/build) platform
dnl--------------------------------------------------------------------
194 195
dnl If we aren't explicitly told what values to use with configure flags,
dnl we ask the bootstrapping compiler what platform it is for
196

197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212
if test "${WithGhc}" != ""
then
        bootstrap_host=`"${WithGhc}" +RTS --info | grep '^ ,("Host platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
        bootstrap_target=`"${WithGhc}" +RTS --info | grep '^ ,("Target platform"' | sed -e 's/.*, "//' -e 's/")//' | tr -d '\r'`
        if test "$bootstrap_host" != "$bootstrap_target"
        then
                echo "Bootstrapping GHC is a cross compiler. This probably isn't going to work"
        fi
fi

# We have to run these unconditionally, but we may discard their
# results in the following code
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

213
FPTOOLS_SET_PLATFORM_VARS
214

215 216
# Verify that the installed (bootstrap) GHC is capable of generating
# code for the requested build platform.
ian@well-typed.com's avatar
ian@well-typed.com committed
217 218 219 220 221 222 223
if test "$BuildPlatform" != "$bootstrap_target"
then
    echo "This GHC (${WithGhc}) does not generate code for the build platform"
    echo "   GHC target platform    : $bootstrap_target"
    echo "   Desired build platform : $BuildPlatform"
    exit 1
fi
224

225 226
# Testing if we shall enable shared libs support on Solaris.
# Anything older than SunOS 5.11 aka Solaris 11 (Express) is broken.
227

228
SOLARIS_BROKEN_SHLD=NO
229

230 231 232 233 234
case $host in
     i386-*-solaris2)
     # here we go with the test
     MINOR=`uname -r|cut -d '.' -f 2-`
     if test "$MINOR" -lt "11"; then
235
         SOLARIS_BROKEN_SHLD=YES
236 237 238
     fi
     ;;
esac
239

240 241
AC_SUBST(SOLARIS_BROKEN_SHLD)

242 243
dnl ** Do an unregisterised build?
dnl --------------------------------------------------------------
244 245

AC_MSG_CHECKING(whether target supports a registerised ABI)
246
case "$TargetArch" in
247
    i386|x86_64|powerpc|powerpc64|powerpc64le|arm|aarch64)
248
        UnregisterisedDefault=NO
249
        AC_MSG_RESULT([yes])
250 251 252
        ;;
    *)
        UnregisterisedDefault=YES
253
        AC_MSG_RESULT([no])
254 255
        ;;
esac
256 257 258 259 260 261 262 263 264
FP_DEFAULT_CHOICE_OVERRIDE_CHECK(
  [unregisterised],
  [unregisterised],
  [registerised],
  [Unregisterised],
  [Build a toolchain with the unregisterised ABI (disabled by default on platforms with registerised support)],
  [NO],
  [YES],
  [no])
265 266
AC_SUBST(Unregisterised)

267 268 269 270 271 272 273 274 275 276
dnl ** Do a build with tables next to code?
dnl
dnl Whether the target architecture supports placing info tables
dnl directly before the entry code (see TABLES_NEXT_TO_CODE in the RTS).
dnl Whether we actually compile for TABLES_NEXT_TO_CODE depends on
dnl whether we're building unregisterised code or not, which may be
dnl decided by options to the compiler later.
dnl
dnl See https://gitlab.haskell.org/ghc/ghc/wikis/commentary/rts/storage/heap-objects#tables_next_to_code
dnl --------------------------------------------------------------
277 278

AC_MSG_CHECKING(whether target supports tables next to code)
279 280 281 282 283
case "$Unregisterised" in
    NO)
        case "$TargetArch" in
            ia64|powerpc64|powerpc64le)
                TablesNextToCodeDefault=NO
284
                AC_MSG_RESULT([no])
285 286 287
                ;;
            *)
                TablesNextToCodeDefault=YES
288
                AC_MSG_RESULT([yes])
289 290 291 292 293
                ;;
        esac
        ;;
    YES)
        TablesNextToCodeDefault=NO
294
        AC_MSG_RESULT([no])
295 296
        ;;
esac
297 298 299 300 301 302 303 304
FP_DEFAULT_CHOICE_OVERRIDE_CHECK(
  [tables-next-to-code],
  [tables next to code],
  [tables apart from code],
  [TablesNextToCode],
  [Build a tool chain with info tables layed out next to code (enabled by default when using the registerised ABI, on platforms that support it)])
if test x"$TablesNextToCode" = xYES; then
   AC_DEFINE([TABLES_NEXT_TO_CODE], [1], [Define to 1 if info tables are layed out next to code])
305 306 307
fi
AC_SUBST(TablesNextToCode)

308 309 310 311
dnl ** Does target have runtime linker support?
dnl --------------------------------------------------------------
case "$target" in
    powerpc64-*|powerpc64le-*|powerpc-ibm-aix*)
312
        TargetHasRTSLinker=NO
313 314
        ;;
    *)
315
        TargetHasRTSLinker=YES
316 317
        ;;
esac
318
AC_SUBST(TargetHasRTSLinker)
319

320 321 322
# Requires FPTOOLS_SET_PLATFORM_VARS to be run first.
FP_FIND_ROOT

323

324 325
if test "$HostOS" = "mingw32"
then
326
    # Find the mingw-w64 7z file to extract.
327 328
    # NB. If you update the tarballs to a new version of gcc, don't
    # forget to tweak the paths in driver/gcc/gcc.c.
329 330 331
    if test "$HostArch" = "i386"
    then
        mingw_arch="i686"
332
        tarball_dest_dir="mingw-w64/i686"
333 334 335 336 337 338 339 340
        tarball_mingw_dir="mingw32"
    else
        mingw_arch="x86_64"
        tarball_dest_dir="mingw-w64/x86_64"
        tarball_mingw_dir="mingw64"
    fi
fi

341 342 343 344
set_up_tarballs() {
    AC_MSG_NOTICE([Checking for Windows toolchain tarballs...])
    local action
    if test "$TarballsAutodownload" = "NO"
345
    then
346
        action="verify"
347
    else
348
        action="download"
349
    fi
350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374
    mk/get-win32-tarballs.sh $action $HostArch > missing-win32-tarballs
    case $? in
        0)
           rm missing-win32-tarballs
           ;;
        2)
           echo
           echo "Error:"
           echo "Needed msys2 tarballs are missing. You have a few options to get them,"
           echo
           echo "  * run configure with the --enable-tarballs-autodownload option"
           echo
           echo "  * run mk/get-win32-tarballs.sh download ${HostArch}"
           echo
           echo "  * manually download the files listed in ./missing-win32-tarballs and place"
           echo "    them in the ghc-tarballs directory."
           echo
           exit 1
           ;;
        *)
           echo
           echo "Error fetching msys2 tarballs; see errors above."
           exit 1
           ;;
    esac
375 376 377 378 379 380

    # Extract all the tarballs in one go
    if ! test -d inplace/mingw
    then
        AC_MSG_NOTICE([Extracting Windows toolchain from archives (may take a while)...])
        rm -rf inplace/mingw
381
        local base_dir="../ghc-tarballs/${tarball_dest_dir}"
382 383 384 385
        ( cd inplace &&
        find "${base_dir}" -name "*.tar.xz" -exec tar xfJ {} \; &&
        rm ".MTREE" &&
        rm ".PKGINFO" &&
386
        cd .. ) || AC_MSG_ERROR([Could not extract Windows toolchains.])
387 388 389 390

        mv "inplace/${tarball_mingw_dir}" inplace/mingw &&
        touch inplace/mingw

391 392 393 394 395 396
        # NB. Now since the GCC is hardcoded to use /mingw32 we need to
        # make a wrapper around it to give it the proper paths
        mv inplace/mingw/bin/gcc.exe inplace/mingw/bin/realgcc.exe
        PATH=`pwd`/inplace/mingw/bin:$PATH
        inplace/mingw/bin/realgcc.exe driver/gcc/gcc.c driver/utils/cwrapper.c driver/utils/getLocation.c -Idriver/utils -o inplace/mingw/bin/gcc.exe

397 398 399 400
        AC_MSG_NOTICE([In-tree MingW-w64 tree created])
    fi
}

401
if test "$HostOS" = "mingw32" -a "$EnableDistroToolchain" = "NO"
402 403 404 405 406 407
then
    test -d inplace || mkdir inplace

    # NB. Download and extract the MingW-w64 distribution if required
    set_up_tarballs

408
    mingwbin="$hardtop/inplace/mingw/bin/"
409 410 411
    CC="${mingwbin}gcc.exe"
    LD="${mingwbin}ld.exe"
    NM="${mingwbin}nm.exe"
412
    RANLIB="${mingwbin}ranlib.exe"
413
    OBJDUMP="${mingwbin}objdump.exe"
Ian Lynagh's avatar
Ian Lynagh committed
414
    fp_prog_ar="${mingwbin}ar.exe"
415

416
    AC_PATH_PROG([Genlib],[genlib])
417 418
fi

419 420 421 422 423 424 425 426 427 428 429 430 431 432
# We don't want to bundle a MinGW-w64 toolchain
# So we have to find these individual tools.
if test "$EnableDistroToolchain" = "YES"
then
    # Ideally should use AC_CHECK_TARGET_TOOL but our triples
    # are screwed up. Configure doesn't think they're ever equal and
    # so never tried without the prefix.
    AC_PATH_PROG([CC],[gcc], [clang])
    AC_PATH_PROG([NM],[nm])
    AC_PATH_PROG([AR],[ar])
    AC_PATH_PROG([RANLIB],[ranlib])
    AC_PATH_PROG([OBJDUMP],[objdump])
    AC_PATH_PROG([DllWrap],[dllwrap])
    AC_PATH_PROG([Windres],[windres])
433
    AC_PATH_PROG([Genlib],[genlib])
434 435 436 437
else
    AC_CHECK_TARGET_TOOL([Windres],[windres])
    AC_CHECK_TARGET_TOOL([DllWrap],[dllwrap])
    AC_CHECK_TARGET_TOOL([OBJDUMP],[objdump])
Tamar Christina's avatar
Tamar Christina committed
438
fi
439

Tamar Christina's avatar
Tamar Christina committed
440 441
DllWrapCmd="$DllWrap"
WindresCmd="$Windres"
442

443 444 445 446 447 448 449 450 451
HAVE_GENLIB=False
if test "$HostOS" = "mingw32"
then
    if test "$Genlib" != ""; then
        GenlibCmd="$(cygpath -m $Genlib)"
        HAVE_GENLIB=True
    fi
fi

Tamar Christina's avatar
Tamar Christina committed
452 453
AC_SUBST([DllWrapCmd])
AC_SUBST([WindresCmd])
454 455
AC_SUBST([GenlibCmd])
AC_SUBST([HAVE_GENLIB])
456

Ian Lynagh's avatar
Ian Lynagh committed
457 458
FP_ICONV
FP_GMP
459
FP_CURSES
Ian Lynagh's avatar
Ian Lynagh committed
460

461
XCODE_VERSION()
Ian Lynagh's avatar
Ian Lynagh committed
462

463

464 465 466 467
dnl ** Building a cross compiler?
dnl --------------------------------------------------------------
CrossCompiling=NO
# If 'host' and 'target' differ, then this means we are building a cross-compiler.
Tamar Christina's avatar
Tamar Christina committed
468
if test "$TargetPlatform" != "$HostPlatform" ; then
469 470 471 472 473 474
    CrossCompiling=YES
    cross_compiling=yes   # This tells configure that it can accept just 'target',
                          # otherwise you get
                          #   configure: error: cannot run C compiled programs.
                          #   If you meant to cross compile, use `--host'.
fi
475
if test "$BuildPlatform" != "$HostPlatform" ; then
476 477 478
   AC_MSG_ERROR([
You've selected:

Tamar Christina's avatar
Tamar Christina committed
479 480 481
  BUILD:  $BuildPlatform   (the architecture we're building on)
  HOST:   $HostPlatform    (the architecture the compiler we're building will execute on)
  TARGET: $TargetPlatform  (the architecture the compiler we're building will produce code for)
482

Simon Marlow's avatar
Simon Marlow committed
483 484 485 486
BUILD must equal HOST; that is, we do not support building GHC itself
with a cross-compiler.  To cross-compile GHC itself, set TARGET: stage
1 will be a cross-compiler, and stage 2 will be the cross-compiled
GHC.
487 488
])
fi
489 490 491
# Despite its similarity in name to TargetPlatform, TargetPlatformFull is used
# in calls to subproject configure scripts and thus must be set to the autoconf
# triple, not the normalized GHC triple that TargetPlatform is set to.
492 493 494 495 496 497 498 499
#
# We use the non-canonicalized triple, target_alias, here since the subproject
# configure scripts will use this triple to construct the names of the toolchain
# executables. If we instead passed down the triple produced by
# AC_CANONICAL_TARGET then it may look for the target toolchain under the wrong
# name (this is a known problem in the case of the Android NDK, which has
# slightly odd triples).
#
Gabor Greif's avatar
Gabor Greif committed
500
# It may be better to just do away with the GHC triples altogether. This would
501 502 503
# all be taken care of for us if we configured the subprojects using
# AC_CONFIG_DIR, but unfortunately Cabal needs to be the one to do the
# configuration.
504 505
#
# We also use non-canonicalized triple when install stage1 crosscompiler
506 507 508 509 510 511 512
if test -z "${target_alias}"
then
  # --target wasn't given; use result from AC_CANONICAL_TARGET
  TargetPlatformFull="${target}"
else
  TargetPlatformFull="${target_alias}"
fi
513 514 515 516 517 518 519
if test "$CrossCompiling" = "YES"
then
  # Use value passed by user from --target=
  CrossCompilePrefix="${TargetPlatformFull}-"
else
  CrossCompilePrefix=""
fi
Simon Marlow's avatar
Simon Marlow committed
520
AC_SUBST(CrossCompiling)
521 522
AC_SUBST(CrossCompilePrefix)
AC_SUBST(TargetPlatformFull)
523
AC_SUBST(EnableDistroToolchain)
524

525 526 527
dnl ** Which gcc to use?
dnl --------------------------------------------------------------

528 529 530 531 532 533 534 535 536 537
AC_ARG_WITH([gcc],
        AS_HELP_STRING([--with-gcc=ARG], [Use ARG as the path to gcc (obsolete, use CC=ARG instead) [default=autodetect]]),
        AC_MSG_ERROR([--with-gcc=$withval is obsolete (use './configure CC=$withval' or 'CC=$withval ./configure' instead)]))

AC_ARG_WITH([clang],
        AS_HELP_STRING([--with-clang=ARG], [Use ARG as the path to gcc (obsolete, use CC=ARG instead) [default=autodetect]]),
        AC_MSG_ERROR([--with-clang=$withval is obsolete (use './configure CC=$withval' or 'CC=$withval ./configure' instead)]))

dnl detect compiler (prefer gcc over clang) and set $CC (unless CC already set),
dnl later CC is copied to CC_STAGE{1,2,3}
roland's avatar
roland committed
538
AC_PROG_CC([cc gcc clang])
539

540 541
MAYBE_OVERRIDE_STAGE0([ar],[AR_STAGE0])

542 543 544
dnl make extensions visible to allow feature-tests to detect them lateron
AC_USE_SYSTEM_EXTENSIONS

thomie's avatar
thomie committed
545 546 547
dnl ** figure out how to invoke the C preprocessor (i.e. `gcc -E`)
AC_PROG_CPP

548 549
# --with-hs-cpp/--with-hs-cpp-flags
FP_CPP_CMD_WITH_ARGS(HaskellCPPCmd, HaskellCPPArgs)
thomie's avatar
thomie committed
550 551
AC_SUBST([HaskellCPPCmd])
AC_SUBST([HaskellCPPArgs])
552

553 554 555 556 557
FP_SET_CFLAGS_C99([CC],[CFLAGS],[CPPFLAGS])
FP_SET_CFLAGS_C99([CC_STAGE0],[CONF_CC_OPTS_STAGE0],[CONF_CPP_OPTS_STAGE0])
FP_SET_CFLAGS_C99([CC],[CONF_CC_OPTS_STAGE1],[CONF_CPP_OPTS_STAGE1])
FP_SET_CFLAGS_C99([CC],[CONF_CC_OPTS_STAGE2],[CONF_CPP_OPTS_STAGE2])

John Ericson's avatar
John Ericson committed
558
dnl ** Which ld to use
559
dnl --------------------------------------------------------------
560
AC_ARG_VAR(LD,[Use as the path to ld. See also --disable-ld-override.])
561 562 563 564
FIND_LD([$target],[GccUseLdOpt])
CONF_GCC_LINKER_OPTS_STAGE1="$CONF_GCC_LINKER_OPTS_STAGE1 $GccUseLdOpt"
CONF_GCC_LINKER_OPTS_STAGE2="$CONF_GCC_LINKER_OPTS_STAGE2 $GccUseLdOpt"
LdCmd="$LD"
565
LdNoGoldCmd="$LD_NO_GOLD"
566
CFLAGS="$CFLAGS $GccUseLdOpt"
567
AC_SUBST([LdCmd])
568
AC_SUBST([LdNoGoldCmd])
569

John Ericson's avatar
John Ericson committed
570 571 572 573 574
FP_PROG_LD_IS_GNU
FP_PROG_LD_BUILD_ID
FP_PROG_LD_NO_COMPACT_UNWIND
FP_PROG_LD_FILELIST

575 576
dnl ** Which nm to use?
dnl --------------------------------------------------------------
Ben Gamari's avatar
Ben Gamari committed
577 578 579 580 581 582 583 584
if test "$HostOS" != "mingw32"; then
    AC_CHECK_TARGET_TOOL([NM], [nm])
    if test "$NM" = ":"; then
        AC_MSG_ERROR([cannot find nm in your PATH])
    fi
fi
NmCmd="$NM"
AC_SUBST([NmCmd])
585 586 587 588 589

if test "$TargetOS_CPP" = "darwin"
then
    AC_MSG_CHECKING(whether nm program is broken)
    # Some versions of XCode ship a broken version of `nm`. Detect and work
590
    # around this issue. See : https://gitlab.haskell.org/ghc/ghc/issues/11744
591 592 593 594 595 596
    nmver=$(${NM} --version | grep version | sed 's/ //g')
    case "$nmver" in
        LLVMversion7.3.0|LLVMversion7.3.1)
            AC_MSG_RESULT(yes)
            echo "The detected nm program is broken."
            echo
597
            echo "See: https://gitlab.haskell.org/ghc/ghc/issues/11744"
598 599 600
            echo
            echo "Try re-running configure with:"
            echo
Alex Biehl's avatar
Alex Biehl committed
601
            echo '   NM=$(xcrun --find nm-classic) ./configure'
602 603 604 605 606 607 608 609 610
            echo
            exit 1
            ;;
        *)
            AC_MSG_RESULT(no)
            ;;
        esac
fi

611 612
dnl ** Which objdump to use?
dnl --------------------------------------------------------------
613 614
dnl Note: we may not have objdump on OS X, and we only need it on
dnl Windows (for DLL checks), OpenBSD, and AIX
Ben Gamari's avatar
Ben Gamari committed
615
case $HostOS_CPP in
616
  cygwin32|mingw32|openbsd|aix)
Ben Gamari's avatar
Ben Gamari committed
617 618 619 620
    AC_CHECK_TARGET_TOOL([OBJDUMP], [objdump])
    ;;
esac

621 622 623
ObjdumpCmd="$OBJDUMP"
AC_SUBST([ObjdumpCmd])

624 625
dnl ** Which ranlib to use?
dnl --------------------------------------------------------------
Ben Gamari's avatar
Ben Gamari committed
626 627 628 629
AC_PROG_RANLIB
if test "$RANLIB" = ":"; then
    AC_MSG_ERROR([cannot find ranlib in your PATH])
fi
630
RanlibCmd="$RANLIB"
John Ericson's avatar
John Ericson committed
631
AC_SUBST([RanlibCmd])
632

633 634 635 636 637 638 639
dnl ** which strip to use?
dnl --------------------------------------------------------------
AC_CHECK_TARGET_TOOL([STRIP], [strip])
StripCmd="$STRIP"
AC_SUBST([StripCmd])


Moritz Angermann's avatar
Moritz Angermann committed
640 641
dnl ** which libtool to use?
dnl --------------------------------------------------------------
642 643
# The host normalization on Windows breaks autoconf, it no longer
# thinks that target == host so it never checks the unqualified
644
# tools for Windows. See #14274.
645 646 647 648 649 650 651 652 653
if test "$HostOS" = "mingw32"
then
    AC_PATH_PROG([LIBTOOL],[libtool])
    LibtoolCmd="$(cygpath -m $LIBTOOL)"
else
    AC_CHECK_TARGET_TOOL([LIBTOOL], [libtool])
    LibtoolCmd="$LIBTOOL"
fi
AC_SUBST([LibtoolCmd])
654

655 656 657 658
# Here is where we re-target which specific version of the LLVM
# tools we are looking for. In the past, GHC supported a number of
# versions of LLVM simultaneously, but that stopped working around
# 3.5/3.6 release of LLVM.
Erik de Castro Lopo's avatar
Erik de Castro Lopo committed
659
LlvmVersion=7
660
AC_SUBST([LlvmVersion])
661 662
sUPPORTED_LLVM_VERSION=$(echo \($LlvmVersion\) | sed 's/\./,/')
AC_DEFINE_UNQUOTED([sUPPORTED_LLVM_VERSION], ${sUPPORTED_LLVM_VERSION}, [The supported LLVM version number])
663

Moritz Angermann's avatar
Moritz Angermann committed
664 665
dnl ** Which LLVM clang to use?
dnl --------------------------------------------------------------
666
AC_ARG_VAR(CLANG,[Use as the path to clang [default=autodetect]])
Moritz Angermann's avatar
Moritz Angermann committed
667 668 669 670
AC_CHECK_TARGET_TOOL([CLANG], [clang])
ClangCmd="$CLANG"
AC_SUBST([ClangCmd])

671 672
dnl ** Which LLVM llc to use?
dnl --------------------------------------------------------------
673
AC_ARG_VAR(LLC,[Use as the path to LLVM's llc [default=autodetect]])
Ben Gamari's avatar
Ben Gamari committed
674
FIND_LLVM_PROG([LLC], [llc], [$LlvmVersion])
675 676 677 678 679
LlcCmd="$LLC"
AC_SUBST([LlcCmd])

dnl ** Which LLVM opt to use?
dnl --------------------------------------------------------------
680
AC_ARG_VAR(OPT,[Use as the path to LLVM's opt [default=autodetect]])
Ben Gamari's avatar
Ben Gamari committed
681
FIND_LLVM_PROG([OPT], [opt], [$LlvmVersion])
682 683 684
OptCmd="$OPT"
AC_SUBST([OptCmd])

sof's avatar
sof committed
685 686 687 688
dnl --------------------------------------------------------------
dnl End of configure script option section
dnl --------------------------------------------------------------

689 690 691
dnl ** Copy the files from the "fs" utility into the right folders.
dnl --------------------------------------------------------------
AC_MSG_NOTICE([Creating links for in-tree file handling routines.])
Ben Gamari's avatar
Ben Gamari committed
692 693 694 695 696
ln -f utils/fs/fs.* utils/lndir/
ln -f utils/fs/fs.* utils/unlit/
ln -f utils/fs/fs.* rts/
ln -f utils/fs/fs.h libraries/base/include/
ln -f utils/fs/fs.c libraries/base/cbits/
697
AC_MSG_NOTICE([Routines in place. Packages can now be build normally.])
sof's avatar
sof committed
698 699

dnl --------------------------------------------------------------
700 701 702
dnl ** Can the unix package be built?
dnl --------------------------------------------------------------

703 704
dnl ** does #! work?
AC_SYS_INTERPRETER()
sof's avatar
sof committed
705

rrt's avatar
rrt committed
706 707
dnl ** look for GCC and find out which version
dnl     Figure out which C compiler to use.  Gcc is preferred.
Gabor Greif's avatar
Gabor Greif committed
708
dnl     If gcc, make sure it's at least 3.0
rrt's avatar
rrt committed
709
dnl
710
FP_GCC_VERSION
711

Ben Gamari's avatar
Ben Gamari committed
712 713 714
dnl ** See whether gcc supports -no-pie
FP_GCC_SUPPORTS_NO_PIE

715 716 717 718 719
dnl ** Used to determine how to compile ghc-prim's atomics.c, used by
dnl    unregisterised, Sparc, and PPC backends.
FP_GCC_SUPPORTS__ATOMICS
AC_DEFINE([HAVE_C11_ATOMICS], [$CONF_GCC_SUPPORTS__ATOMICS], [Does GCC support __atomic primitives?])

John Ericson's avatar
John Ericson committed
720 721
FP_GCC_EXTRA_FLAGS

722 723 724 725
dnl ** look to see if we have a C compiler using an llvm back end.
dnl
FP_CC_LLVM_BACKEND

726 727 728 729
FPTOOLS_SET_C_LD_FLAGS([target],[CFLAGS],[LDFLAGS],[IGNORE_LINKER_LD_FLAGS],[CPPFLAGS])
FPTOOLS_SET_C_LD_FLAGS([build],[CONF_CC_OPTS_STAGE0],[CONF_GCC_LINKER_OPTS_STAGE0],[CONF_LD_LINKER_OPTS_STAGE0],[CONF_CPP_OPTS_STAGE0])
FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE1],[CONF_GCC_LINKER_OPTS_STAGE1],[CONF_LD_LINKER_OPTS_STAGE1],[CONF_CPP_OPTS_STAGE1])
FPTOOLS_SET_C_LD_FLAGS([target],[CONF_CC_OPTS_STAGE2],[CONF_GCC_LINKER_OPTS_STAGE2],[CONF_LD_LINKER_OPTS_STAGE2],[CONF_CPP_OPTS_STAGE2])
730
# Stage 3 won't be supported by cross-compilation
731

732 733
# See rules/distdir-way-opts.mk for details.
# Flags passed to the C compiler
734 735 736
AC_SUBST(CONF_CC_OPTS_STAGE0)
AC_SUBST(CONF_CC_OPTS_STAGE1)
AC_SUBST(CONF_CC_OPTS_STAGE2)
737
# Flags passed to the C compiler when we ask it to link
738 739 740
AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE0)
AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE1)
AC_SUBST(CONF_GCC_LINKER_OPTS_STAGE2)
741
# Flags passed to the linker when we ask it to link
742 743 744
AC_SUBST(CONF_LD_LINKER_OPTS_STAGE0)
AC_SUBST(CONF_LD_LINKER_OPTS_STAGE1)
AC_SUBST(CONF_LD_LINKER_OPTS_STAGE2)
745
# Flags passed to the C preprocessor
746 747 748
AC_SUBST(CONF_CPP_OPTS_STAGE0)
AC_SUBST(CONF_CPP_OPTS_STAGE1)
AC_SUBST(CONF_CPP_OPTS_STAGE2)
749 750 751 752
# Flags passed to the Haskell compiler
AC_SUBST(CONF_HC_OPTS_STAGE0)
AC_SUBST(CONF_HC_OPTS_STAGE1)
AC_SUBST(CONF_HC_OPTS_STAGE2)
rrt's avatar
rrt committed
753

754 755 756 757 758
dnl ** Set up the variables for the platform in the settings file.
dnl May need to use gcc to find platform details.
dnl --------------------------------------------------------------
FPTOOLS_SET_HASKELL_PLATFORM_VARS

759
dnl ** figure out how to do context diffs
760
FP_PROG_CONTEXT_DIFF
sof's avatar
sof committed
761

762 763 764
dnl Let's make sure install-sh is executable here.  If we got it from
dnl a darcs repo, it might not be (see bug #978).
chmod +x install-sh
765 766
dnl ** figure out how to do a BSD-ish install
AC_PROG_INSTALL
sof's avatar
sof committed
767

sof's avatar
sof committed
768
dnl ** how to invoke `ar' and `ranlib'
769
FP_PROG_AR_SUPPORTS_ATFILE
770
FP_PROG_AR_NEEDS_RANLIB
sof's avatar
sof committed
771

772
dnl ** Check to see whether ln -s works
sof's avatar
sof committed
773 774
AC_PROG_LN_S

775
FP_SETTINGS
sof's avatar
sof committed
776 777

dnl ** Find the path to sed
Ian Lynagh's avatar
Ian Lynagh committed
778
AC_PATH_PROGS(SedCmd,gsed sed,sed)
sof's avatar
sof committed
779

sof's avatar
sof committed
780 781

dnl ** check for time command
sof's avatar
sof committed
782 783
AC_PATH_PROG(TimeCmd,time)

sof's avatar
sof committed
784 785
dnl ** check for tar
dnl   if GNU tar is named gtar, look for it first.
786
AC_PATH_PROGS(TarCmd,gnutar gtar tar,tar)
sof's avatar
sof committed
787

788 789 790 791 792
dnl ** check for compressors
AC_PATH_PROGS(Bzip2Cmd,bzip2, bzip2)
AC_PATH_PROGS(GzipCmd,gzip, gzip)
AC_PATH_PROGS(XzCmd,pxz xz, xz)

Ian Lynagh's avatar
Ian Lynagh committed
793 794 795 796
dnl ** check for patch
dnl if GNU patch is named gpatch, look for it first
AC_PATH_PROGS(PatchCmd,gpatch patch, patch)

797 798 799
dnl ** check for autoreconf
AC_PATH_PROG(AutoreconfCmd, autoreconf, autoreconf)

800
dnl ** check for dtrace (currently only implemented for Mac OS X)
801 802 803 804 805 806 807
AC_ARG_ENABLE(dtrace,
    [AC_HELP_STRING([--enable-dtrace],
        [Enable DTrace])],
    EnableDtrace=$enableval,
    EnableDtrace=yes
)

808
HaveDtrace=NO
809

810
AC_PATH_PROG(DtraceCmd,dtrace)
811 812 813 814 815 816 817
if test "x$EnableDtrace" = "xyes"; then
  if test -n "$DtraceCmd"; then
    if test "x$TargetOS_CPP-$TargetVendor_CPP" = "xdarwin-apple" \
      -o "x$TargetOS_CPP-$TargetVendor_CPP" = "xfreebsd-portbld" \
      -o "x$TargetOS_CPP-$TargetVendor_CPP" = "xsolaris2-unknown"; then
      HaveDtrace=YES
    fi
818 819 820 821
  fi
fi
AC_SUBST(HaveDtrace)

822
AC_PATH_PROG(HSCOLOUR,HsColour)
823
# HsColour is passed to Cabal, so we need a native path
824
if test "$HostOS"      = "mingw32" && \
825
   test "${OSTYPE}"   != "msys"    && \
826
   test "${HSCOLOUR}" != ""
827 828 829
then
    # Canonicalise to <drive>:/path/to/gcc
    HSCOLOUR=`cygpath -m ${HSCOLOUR}`
830
fi
831

832
dnl ** check for Sphinx toolchain
833 834
AC_PATH_PROG(SPHINXBUILD,sphinx-build)
AC_CACHE_CHECK([for version of sphinx-build], fp_cv_sphinx_version,
835 836
changequote(, )dnl
[if test -n "$SPHINXBUILD"; then
837
  fp_cv_sphinx_version=`"$SPHINXBUILD" --version 2>&1 | sed 's/.* v\?\([0-9]\.[0-9]\.[0-9]\)/\1/' | head -n1`;
838 839 840
fi;
changequote([, ])dnl
])
841 842
FP_COMPARE_VERSIONS([$fp_cv_sphinx_version],-lt,1.0.0,
    [AC_MSG_WARN([Sphinx version 1.0.0 or later is required to build documentation]); SPHINXBUILD=;])
843 844 845

dnl ** check for xelatex
AC_PATH_PROG(XELATEX,xelatex)
846

847 848 849
dnl ** check for makeinfo
AC_PATH_PROG(MAKEINFO,makeinfo)

reid's avatar
reid committed
850
dnl ** check for ghc-pkg command
851
FP_PROG_GHC_PKG
reid's avatar
reid committed
852

sof's avatar
sof committed
853
dnl ** check for installed happy binary + version
854 855

AC_ARG_VAR(HAPPY,[Use as the path to happy [default=autodetect]])
sof's avatar
sof committed
856
FPTOOLS_HAPPY
sof's avatar
sof committed
857

858
dnl ** check for installed alex binary + version
859 860

AC_ARG_VAR(ALEX,[Use as the path to alex [default=autodetect]])
861 862
FPTOOLS_ALEX

sof's avatar
sof committed
863 864 865
dnl --------------------------------------------------
dnl ### program checking section ends here ###
dnl --------------------------------------------------
sof's avatar
sof committed
866

sof's avatar
sof committed
867 868 869
dnl --------------------------------------------------
dnl * Platform header file and syscall feature tests
dnl ### checking the state of the local header files and syscalls ###
sof's avatar
sof committed
870

871 872
dnl ** check for full ANSI header (.h) files
AC_HEADER_STDC
sof's avatar
sof committed
873

874 875 876 877
dnl ** Enable large file support.  NB. do this before testing the type of
dnl    off_t, because it will affect the result of that test.
AC_SYS_LARGEFILE

878
dnl ** check for specific header (.h) files that we are interested in
879
AC_CHECK_HEADERS([ctype.h dirent.h dlfcn.h errno.h fcntl.h grp.h limits.h locale.h nlist.h pthread.h pwd.h signal.h sys/param.h sys/mman.h sys/resource.h sys/select.h sys/time.h sys/timeb.h sys/timerfd.h sys/timers.h sys/times.h sys/utsname.h sys/wait.h termios.h time.h utime.h windows.h winsock.h sched.h])
880 881 882 883 884 885 886

dnl sys/cpuset.h needs sys/param.h to be included first on FreeBSD 9.1; #7708
AC_CHECK_HEADERS([sys/cpuset.h], [], [],
[[#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
]])
887

888 889
dnl ** check if it is safe to include both <time.h> and <sys/time.h>
AC_HEADER_TIME
sof's avatar
sof committed
890

891
dnl ** do we have long longs?
892
AC_CHECK_TYPES([long long])
893

reid's avatar
reid committed
894
dnl ** what are the sizes of various types
895 896 897 898 899
FP_CHECK_SIZEOF_AND_ALIGNMENT(char)
FP_CHECK_SIZEOF_AND_ALIGNMENT(double)
FP_CHECK_SIZEOF_AND_ALIGNMENT(float)
FP_CHECK_SIZEOF_AND_ALIGNMENT(int)
FP_CHECK_SIZEOF_AND_ALIGNMENT(long)
900
if test "$ac_cv_type_long_long" = yes; then
901
FP_CHECK_SIZEOF_AND_ALIGNMENT(long long)
902
fi
903 904 905 906
FP_CHECK_SIZEOF_AND_ALIGNMENT(short)
FP_CHECK_SIZEOF_AND_ALIGNMENT(unsigned char)
FP_CHECK_SIZEOF_AND_ALIGNMENT(unsigned int)
FP_CHECK_SIZEOF_AND_ALIGNMENT(unsigned long)
907
if test "$ac_cv_type_long_long" = yes; then
908
FP_CHECK_SIZEOF_AND_ALIGNMENT(unsigned long long)
909
fi
910 911 912 913 914 915 916 917 918 919 920 921
FP_CHECK_SIZEOF_AND_ALIGNMENT(unsigned short)
FP_CHECK_SIZEOF_AND_ALIGNMENT(void *)

FP_CHECK_SIZEOF_AND_ALIGNMENT(int8_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(uint8_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(int16_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(uint16_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(int32_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(uint32_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(int64_t)
FP_CHECK_SIZEOF_AND_ALIGNMENT(uint64_t)

reid's avatar
reid committed
922

923
dnl for use in settings file
924
TargetWordSize=$ac_cv_sizeof_void_p
Moritz Angermann's avatar
Moritz Angermann committed
925 926 927 928 929
if test "x$TargetWordSize" == 8; then
  AC_SUBST([Cabal64bit],[True])
else
  AC_SUBST([Cabal64bit],[False])
fi
930
AC_SUBST(TargetWordSize)
931 932
FP_CHECK_FUNC([WinExec],
  [@%:@include <windows.h>], [WinExec("",0)])
reid's avatar
reid committed
933

934 935
FP_CHECK_FUNC([GetModuleFileName],
  [@%:@include <windows.h>], [GetModuleFileName((HMODULE)0,(LPTSTR)0,0)])
reid's avatar
reid committed
936 937

dnl ** check for more functions
938
dnl ** The following have been verified to be used in ghc/, but might be used somewhere else, too.
939
AC_CHECK_FUNCS([getclock getrusage gettimeofday setitimer siginterrupt sysconf times ctime_r sched_setaffinity setlocale])
940

rl@cse.unsw.edu.au's avatar
rl@cse.unsw.edu.au committed
941 942 943 944 945 946 947
dnl ** On OS X 10.4 (at least), time.h doesn't declare ctime_r if
dnl ** _POSIX_C_SOURCE is defined
AC_CHECK_DECLS([ctime_r], , ,
[#define _POSIX_SOURCE 1
#define _POSIX_C_SOURCE 199506L
#include <time.h>])

948
dnl ** check for mingwex library
Ben Gamari's avatar
Ben Gamari committed
949 950 951 952 953
AC_CHECK_LIB(
  [mingwex],
  [closedir],
  [AC_SUBST([HaveLibMingwEx],[YES])] [AC_SUBST([CabalMingwex],[True])],
  [AC_SUBST([HaveLibMingwEx],[NO])] [AC_SUBST([CabalMingwex],[False])])
954 955

if test $HaveLibMingwEx = YES ; then
956
  AC_DEFINE([HAVE_MINGWEX], [1], [Define to 1 if you have the mingwex library.])
957 958
fi

sebc's avatar
sebc committed
959
dnl ** check for math library
960 961 962
dnl    Keep that check as early as possible.
dnl    as we need to know whether we need libm
dnl    for math functions or not
963
dnl    (see https://gitlab.haskell.org/ghc/ghc/issues/3730)
964 965 966 967
AC_CHECK_LIB(m, atan, HaveLibM=YES, HaveLibM=NO)
if test $HaveLibM = YES
then
  AC_DEFINE([HAVE_LIBM], [1], [Define to 1 if you need to link with libm])
Moritz Angermann's avatar
Moritz Angermann committed
968 969 970
  AC_SUBST([CabalHaveLibm],[True])
else
  AC_SUBST([CabalHaveLibm],[False])
971
fi
sebc's avatar
sebc committed
972

973
FP_BFD_SUPPORT
974

reid's avatar
reid committed
975 976 977 978
dnl ################################################################
dnl Check for libraries
dnl ################################################################

979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
# system libffi

AC_ARG_WITH([system-libffi],
[AC_HELP_STRING([--with-system-libffi],
  [Use system provided libffi for RTS [default=no]])
])

AS_IF([test "x$with_system_libffi" = "xyes"],
  [UseSystemLibFFI="YES"], [UseSystemLibFFI="NO"]
)


AC_SUBST(UseSystemLibFFI)

AC_ARG_WITH([ffi-includes],
[AC_HELP_STRING([--with-ffi-includes=ARG],
  [Find includes for libffi in ARG [default=system default]])
],
[
 if test "x$UseSystemLibFFI" != "xYES"; then
    AC_MSG_WARN([--with-ffi-includes will be ignored, --with-system-libffi not set])
 else
    FFIIncludeDir="$withval"
    LIBFFI_CFLAGS="-I$withval"
 fi
])

AC_SUBST(FFIIncludeDir)

AC_ARG_WITH([ffi-libraries],
[AC_HELP_STRING([--with-ffi-libraries=ARG],
  [Find libffi in ARG [default=system default]])
],
[
 if test "x$UseSystemLibFFI" != "xYES"; then
    AC_MSG_WARN([--with-ffi-libraries will be ignored, --with-system-libffi not set])
 else
    FFILibDir="$withval" LIBFFI_LDFLAGS="-L$withval"
 fi
])

AC_SUBST(FFILibDir)

Moritz Angermann's avatar
Moritz Angermann committed
1022
AC_SUBST([CabalHaveLibffi],[False])
1023 1024 1025 1026 1027
AS_IF([test "$UseSystemLibFFI" = "YES"], [
 CFLAGS2="$CFLAGS"
 CFLAGS="$LIBFFI_CFLAGS $CFLAGS"
 LDFLAGS2="$LDFLAGS"
 LDFLAGS="$LIBFFI_LDFLAGS $LDFLAGS"