about summary refs log tree commit diff
path: root/pkgs/development/compilers/ghc/common-make-native-bignum.nix
blob: 79fced444f562fad732171bb38b7ecd749ce6f7b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
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
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
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
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
{ version
, sha256
, url ? "https://downloads.haskell.org/ghc/${version}/ghc-${version}-src.tar.xz"
}:

{ lib, stdenv, pkgsBuildTarget, pkgsHostTarget, targetPackages

# build-tools
, bootPkgs
, autoconf, automake, coreutils, fetchpatch, fetchurl, perl, python3, m4, sphinx
, xattr, autoSignDarwinBinariesHook
, bash

, libiconv ? null, ncurses
, glibcLocales ? null

, # GHC can be built with system libffi or a bundled one.
  libffi ? null

, useLLVM ? !(stdenv.targetPlatform.isx86
              || stdenv.targetPlatform.isPower
              || stdenv.targetPlatform.isSparc
              || (lib.versionAtLeast version "9.2" && stdenv.targetPlatform.isAarch64))
, # LLVM is conceptually a run-time-only dependency, but for
  # non-x86, we need LLVM to bootstrap later stages, so it becomes a
  # build-time dependency too.
  buildTargetLlvmPackages, llvmPackages

, # If enabled, GHC will be built with the GPL-free but slightly slower native
  # bignum backend instead of the faster but GPLed gmp backend.
  enableNativeBignum ? !(lib.meta.availableOn stdenv.hostPlatform gmp
                         && lib.meta.availableOn stdenv.targetPlatform gmp)
, gmp

, # If enabled, use -fPIC when compiling static libs.
  enableRelocatedStaticLibs ? stdenv.targetPlatform != stdenv.hostPlatform

, enableProfiledLibs ? true

, # Whether to build dynamic libs for the standard library (on the target
  # platform). Static libs are always built.
  enableShared ? with stdenv.targetPlatform; !isWindows && !useiOSPrebuilt && !isStatic

, # Whether to build terminfo.
  enableTerminfo ? !stdenv.targetPlatform.isWindows

, # What flavour to build. An empty string indicates no
  # specific flavour and falls back to ghc default values.
  ghcFlavour ? lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
    (if useLLVM then "perf-cross" else "perf-cross-ncg")

, #  Whether to build sphinx documentation.
  enableDocs ? (
    # Docs disabled if we are building on musl because it's a large task to keep
    # all `sphinx` dependencies building in this environment.
    !stdenv.buildPlatform.isMusl
  )

, enableHaddockProgram ?
    # Disabled for cross; see note [HADDOCK_DOCS].
    (stdenv.targetPlatform == stdenv.hostPlatform)

, # Whether to disable the large address space allocator
  # necessary fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
  disableLargeAddressSpace ? stdenv.targetPlatform.isiOS
}:

assert !enableNativeBignum -> gmp != null;

# Cross cannot currently build the `haddock` program for silly reasons,
# see note [HADDOCK_DOCS].
assert (stdenv.targetPlatform != stdenv.hostPlatform) -> !enableHaddockProgram;

let
  inherit (stdenv) buildPlatform hostPlatform targetPlatform;

  inherit (bootPkgs) ghc;

  # TODO(@Ericson2314) Make unconditional
  targetPrefix = lib.optionalString
    (targetPlatform != hostPlatform)
    "${targetPlatform.config}-";

  buildMK = ''
    BuildFlavour = ${ghcFlavour}
    ifneq \"\$(BuildFlavour)\" \"\"
    include mk/flavours/\$(BuildFlavour).mk
    endif
    BUILD_SPHINX_HTML = ${if enableDocs then "YES" else "NO"}
    BUILD_SPHINX_PDF = NO
  '' +
  # Note [HADDOCK_DOCS]:
  # Unfortunately currently `HADDOCK_DOCS` controls both whether the `haddock`
  # program is built (which we generally always want to have a complete GHC install)
  # and whether it is run on the GHC sources to generate hyperlinked source code
  # (which is impossible for cross-compilation); see:
  # https://gitlab.haskell.org/ghc/ghc/-/issues/20077
  # This implies that currently a cross-compiled GHC will never have a `haddock`
  # program, so it can never generate haddocks for any packages.
  # If this is solved in the future, we'd like to unconditionally
  # build the haddock program (removing the `enableHaddockProgram` option).
  ''
    HADDOCK_DOCS = ${if enableHaddockProgram then "YES" else "NO"}
    # Build haddocks for boot packages with hyperlinking
    EXTRA_HADDOCK_OPTS += --hyperlinked-source --quickjump

    DYNAMIC_GHC_PROGRAMS = ${if enableShared then "YES" else "NO"}
    BIGNUM_BACKEND = ${if enableNativeBignum then "native" else "gmp"}
  '' + lib.optionalString (targetPlatform != hostPlatform) ''
    Stage1Only = ${if targetPlatform.system == hostPlatform.system then "NO" else "YES"}
    CrossCompilePrefix = ${targetPrefix}
  '' + lib.optionalString (!enableProfiledLibs) ''
    BUILD_PROF_LIBS = NO
  '' +
  # -fexternal-dynamic-refs apparently (because it's not clear from the documentation)
  # makes the GHC RTS able to load static libraries, which may be needed for TemplateHaskell.
  # This solution was described in https://www.tweag.io/blog/2020-09-30-bazel-static-haskell
  lib.optionalString enableRelocatedStaticLibs ''
    GhcLibHcOpts += -fPIC -fexternal-dynamic-refs
    GhcRtsHcOpts += -fPIC -fexternal-dynamic-refs
  '' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
    EXTRA_CC_OPTS += -std=gnu99
  '';

  # Splicer will pull out correct variations
  libDeps = platform: lib.optional enableTerminfo ncurses
    ++ [libffi]
    ++ lib.optional (!enableNativeBignum) gmp
    ++ lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;

  # TODO(@sternenseemann): is buildTarget LLVM unnecessary?
  # GHC doesn't seem to have {LLC,OPT}_HOST
  toolsForTarget = [
    pkgsBuildTarget.targetPackages.stdenv.cc
  ] ++ lib.optional useLLVM buildTargetLlvmPackages.llvm;

  targetCC = builtins.head toolsForTarget;

  # toolPath calculates the absolute path to the name tool associated with a
  # given `stdenv.cc` derivation, i.e. it picks the correct derivation to take
  # the tool from (cc, cc.bintools, cc.bintools.bintools) and adds the correct
  # subpath of the tool.
  toolPath = name: cc:
    let
      tools = {
        "cc" = cc;
        "c++" = cc;
        as = cc.bintools.bintools;

        ar = cc.bintools.bintools;
        ranlib = cc.bintools.bintools;
        nm = cc.bintools.bintools;
        readelf = cc.bintools.bintools;

        ld = cc.bintools;
        "ld.gold" = cc.bintools;

        otool = cc.bintools.bintools;

        # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
        # part of the bintools wrapper (due to codesigning requirements), but not on
        # x86_64-darwin. We decide based on target platform to have consistent tools
        # across all GHC stages.
        install_name_tool =
          if stdenv.targetPlatform.isAarch64
          then cc.bintools
          else cc.bintools.bintools;
        # Same goes for strip.
        strip =
          # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
          if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
          then cc.bintools
          else cc.bintools.bintools;
      }.${name};
    in
    "${tools}/bin/${tools.targetPrefix}${name}";

  # Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues.
  # But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
  # see #84670 and #49071 for more background.
  useLdGold = targetPlatform.linker == "gold" ||
    (targetPlatform.linker == "bfd" && (targetCC.bintools.bintools.hasGold or false) && !targetPlatform.isMusl);

  # Makes debugging easier to see which variant is at play in `nix-store -q --tree`.
  variantSuffix = lib.concatStrings [
    (lib.optionalString stdenv.hostPlatform.isMusl "-musl")
    (lib.optionalString enableNativeBignum "-native-bignum")
  ];

in

# C compiler, bintools and LLVM are used at build time, but will also leak into
# the resulting GHC's settings file and used at runtime. This means that we are
# currently only able to build GHC if hostPlatform == buildPlatform.
assert targetCC == pkgsHostTarget.targetPackages.stdenv.cc;
assert buildTargetLlvmPackages.llvm == llvmPackages.llvm;
assert stdenv.targetPlatform.isDarwin -> buildTargetLlvmPackages.clang == llvmPackages.clang;

stdenv.mkDerivation (rec {
  pname = "${targetPrefix}ghc${variantSuffix}";
  inherit version;

  src = fetchurl {
    inherit url sha256;
  };

  enableParallelBuilding = true;

  outputs = [ "out" "doc" ];

  patches = lib.optionals (lib.versionOlder version "9.4") [
    # fix hyperlinked haddock sources: https://github.com/haskell/haddock/pull/1482
    (fetchpatch {
      url = "https://patch-diff.githubusercontent.com/raw/haskell/haddock/pull/1482.patch";
      sha256 = "sha256-8w8QUCsODaTvknCDGgTfFNZa8ZmvIKaKS+2ZJZ9foYk=";
      extraPrefix = "utils/haddock/";
      stripLen = 1;
    })
  ]

  ++ lib.optionals (lib.versionOlder version "9.4.6") [
    # Fix docs build with sphinx >= 6.0
    # https://gitlab.haskell.org/ghc/ghc/-/issues/22766
    (fetchpatch {
      name = "ghc-docs-sphinx-6.0.patch";
      url = "https://gitlab.haskell.org/ghc/ghc/-/commit/10e94a556b4f90769b7fd718b9790d58ae566600.patch";
      sha256 = "0kmhfamr16w8gch0lgln2912r8aryjky1hfcda3jkcwa5cdzgjdv";
    })
  ]

  ++ [
    # Fix docs build with Sphinx >= 7 https://gitlab.haskell.org/ghc/ghc/-/issues/24129
    ./docs-sphinx-7.patch
  ]

  ++ lib.optionals (lib.versionOlder version "9.2.2") [
    # Add flag that fixes C++ exception handling; opt-in. Merged in 9.4 and 9.2.2.
    # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7423
    (fetchpatch {
      name = "ghc-9.0.2-fcompact-unwind.patch";
      # Note that the test suite is not packaged.
      url = "https://gitlab.haskell.org/ghc/ghc/-/commit/c6132c782d974a7701e7f6447bdcd2bf6db4299a.patch?merge_request_iid=7423";
      sha256 = "sha256-b4feGZIaKDj/UKjWTNY6/jH4s2iate0wAgMxG3rAbZI=";
    })
  ]

  ++ lib.optionals (lib.versionAtLeast version "9.2") [
    # Don't generate code that doesn't compile when --enable-relocatable is passed to Setup.hs
    # Can be removed if the Cabal library included with ghc backports the linked fix
    (fetchpatch {
      url = "https://github.com/haskell/cabal/commit/6c796218c92f93c95e94d5ec2d077f6956f68e98.patch";
      stripLen = 1;
      extraPrefix = "libraries/Cabal/";
      sha256 = "sha256-yRQ6YmMiwBwiYseC5BsrEtDgFbWvst+maGgDtdD0vAY=";
    })
  ]

  ++ lib.optionals (version == "9.4.6") [
    # Work around a type not being defined when including Rts.h in bytestring's cbits
    # due to missing feature macros. See https://gitlab.haskell.org/ghc/ghc/-/issues/23810.
    ./9.4.6-bytestring-posix-source.patch
  ]

  ++ lib.optionals (stdenv.targetPlatform.isDarwin && stdenv.targetPlatform.isAarch64) [
    # Prevent the paths module from emitting symbols that we don't use
    # when building with separate outputs.
    #
    # These cause problems as they're not eliminated by GHC's dead code
    # elimination on aarch64-darwin. (see
    # https://github.com/NixOS/nixpkgs/issues/140774 for details).
    (if lib.versionAtLeast version "9.2"
     then ./Cabal-at-least-3.6-paths-fix-cycle-aarch64-darwin.patch
     else ./Cabal-3.2-3.4-paths-fix-cycle-aarch64-darwin.patch)
  ];

  postPatch = "patchShebangs .";

  # GHC needs the locale configured during the Haddock phase.
  LANG = "en_US.UTF-8";

  # GHC is a bit confused on its cross terminology.
  # TODO(@sternenseemann): investigate coreutils dependencies and pass absolute paths
  preConfigure = ''
    for env in $(env | grep '^TARGET_' | sed -E 's|\+?=.*||'); do
      export "''${env#TARGET_}=''${!env}"
    done
    # GHC is a bit confused on its cross terminology, as these would normally be
    # the *host* tools.
    export CC="${toolPath "cc" targetCC}"
    export CXX="${toolPath "c++" targetCC}"
    # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
    export LD="${toolPath "ld${lib.optionalString useLdGold ".gold"}" targetCC}"
    export AS="${toolPath "as" targetCC}"
    export AR="${toolPath "ar" targetCC}"
    export NM="${toolPath "nm" targetCC}"
    export RANLIB="${toolPath "ranlib" targetCC}"
    export READELF="${toolPath "readelf" targetCC}"
    export STRIP="${toolPath "strip" targetCC}"
  '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
    export OTOOL="${toolPath "otool" targetCC}"
    export INSTALL_NAME_TOOL="${toolPath "install_name_tool" targetCC}"
  '' + lib.optionalString useLLVM ''
    export LLC="${lib.getBin buildTargetLlvmPackages.llvm}/bin/llc"
    export OPT="${lib.getBin buildTargetLlvmPackages.llvm}/bin/opt"
  '' + lib.optionalString (useLLVM && stdenv.targetPlatform.isDarwin) ''
    # LLVM backend on Darwin needs clang: https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/codegens.html#llvm-code-generator-fllvm
    export CLANG="${buildTargetLlvmPackages.clang}/bin/${buildTargetLlvmPackages.clang.targetPrefix}clang"
  ''
  + ''
    echo -n "${buildMK}" > mk/build.mk
  ''
  + lib.optionalString (lib.versionOlder version "9.2" || lib.versionAtLeast version "9.4") ''
    sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
  '' + lib.optionalString (stdenv.isLinux && hostPlatform.libc == "glibc") ''
    export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
  '' + lib.optionalString (!stdenv.isDarwin) ''
    export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
  '' + lib.optionalString stdenv.isDarwin ''
    export NIX_LDFLAGS+=" -no_dtrace_dof"
  '' + lib.optionalString (stdenv.isDarwin && lib.versionAtLeast version "9.2") ''

    # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
    export XATTR=${lib.getBin xattr}/bin/xattr
  '' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
    sed -i -e '5i ,("armv7a-unknown-linux-androideabi", ("e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64", "cortex-a8", ""))' llvm-targets
  '' + lib.optionalString targetPlatform.isMusl ''
      echo "patching llvm-targets for musl targets..."
      echo "Cloning these existing '*-linux-gnu*' targets:"
      grep linux-gnu llvm-targets | sed 's/^/  /'
      echo "(go go gadget sed)"
      sed -i 's,\(^.*linux-\)gnu\(.*\)$,\0\n\1musl\2,' llvm-targets
      echo "llvm-targets now contains these '*-linux-musl*' targets:"
      grep linux-musl llvm-targets | sed 's/^/  /'

      echo "And now patching to preserve '-musleabi' as done with '-gnueabi'"
      # (aclocal.m4 is actual source, but patch configure as well since we don't re-gen)
      for x in configure aclocal.m4; do
        substituteInPlace $x \
          --replace '*-android*|*-gnueabi*)' \
                    '*-android*|*-gnueabi*|*-musleabi*)'
      done
  ''
  # HACK: allow bootstrapping with GHC 8.10 which works fine, as we don't have
  # binary 9.0 packaged. Bootstrapping with 9.2 is broken without hadrian.
  + lib.optionalString (lib.versions.majorMinor version == "9.4") ''
    substituteInPlace configure --replace \
      'MinBootGhcVersion="9.0"' \
      'MinBootGhcVersion="8.10"'
  '';

  # TODO(@Ericson2314): Always pass "--target" and always prefix.
  configurePlatforms = [ "build" "host" ]
    ++ lib.optional (targetPlatform != hostPlatform) "target";

  # `--with` flags for libraries needed for RTS linker
  configureFlags = [
    "--datadir=$doc/share/doc/ghc"
    "--with-curses-includes=${ncurses.dev}/include" "--with-curses-libraries=${ncurses.out}/lib"
  ] ++ lib.optionals (libffi != null) [
    "--with-system-libffi"
    "--with-ffi-includes=${targetPackages.libffi.dev}/include"
    "--with-ffi-libraries=${targetPackages.libffi.out}/lib"
  ] ++ lib.optionals (targetPlatform == hostPlatform && !enableNativeBignum) [
    "--with-gmp-includes=${targetPackages.gmp.dev}/include"
    "--with-gmp-libraries=${targetPackages.gmp.out}/lib"
  ] ++ lib.optionals (targetPlatform == hostPlatform && hostPlatform.libc != "glibc" && !targetPlatform.isWindows) [
    "--with-iconv-includes=${libiconv}/include"
    "--with-iconv-libraries=${libiconv}/lib"
  ] ++ lib.optionals (targetPlatform != hostPlatform) [
    "--enable-bootstrap-with-devel-snapshot"
  ] ++ lib.optionals useLdGold [
    "CFLAGS=-fuse-ld=gold"
    "CONF_GCC_LINKER_OPTS_STAGE1=-fuse-ld=gold"
    "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
  ] ++ lib.optionals (disableLargeAddressSpace) [
    "--disable-large-address-space"
  ];

  # Make sure we never relax`$PATH` and hooks support for compatibility.
  strictDeps = true;

  # Don’t add -liconv to LDFLAGS automatically so that GHC will add it itself.
  dontAddExtraLibs = true;

  nativeBuildInputs = [
    perl autoconf automake m4 python3
    ghc bootPkgs.alex bootPkgs.happy bootPkgs.hscolour
  ] ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [
    autoSignDarwinBinariesHook
  ] ++ lib.optionals enableDocs [
    sphinx
  ] ++ lib.optionals (stdenv.isDarwin && lib.versions.majorMinor version == "9.0") [
    # TODO(@sternenseemann): backport addition of XATTR env var like
    # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/6447
    xattr
  ];

  # For building runtime libs
  depsBuildTarget = toolsForTarget;

  buildInputs = [ perl bash ] ++ (libDeps hostPlatform);

  depsTargetTarget = map lib.getDev (libDeps targetPlatform);
  depsTargetTargetPropagated = map (lib.getOutput "out") (libDeps targetPlatform);

  # required, because otherwise all symbols from HSffi.o are stripped, and
  # that in turn causes GHCi to abort
  stripDebugFlags = [ "-S" ] ++ lib.optional (!targetPlatform.isDarwin) "--keep-file-symbols";

  checkTarget = "test";

  hardeningDisable =
    [ "format" ]
    # In nixpkgs, musl based builds currently enable `pie` hardening by default
    # (see `defaultHardeningFlags` in `make-derivation.nix`).
    # But GHC cannot currently produce outputs that are ready for `-pie` linking.
    # Thus, disable `pie` hardening, otherwise `recompile with -fPIE` errors appear.
    # See:
    # * https://github.com/NixOS/nixpkgs/issues/129247
    # * https://gitlab.haskell.org/ghc/ghc/-/issues/19580
    ++ lib.optional stdenv.targetPlatform.isMusl "pie";

  # big-parallel allows us to build with more than 2 cores on
  # Hydra which already warrants a significant speedup
  requiredSystemFeatures = [ "big-parallel" ];

  postInstall = ''
    # Install the bash completion file.
    install -D -m 444 utils/completion/ghc.bash $out/share/bash-completion/completions/${targetPrefix}ghc
  '';

  passthru = {
    inherit bootPkgs targetPrefix;

    inherit llvmPackages;
    inherit enableShared;

    # This is used by the haskell builder to query
    # the presence of the haddock program.
    hasHaddock = enableHaddockProgram;

    # Our Cabal compiler name
    haskellCompilerName = "ghc-${version}";
  };

  meta = {
    homepage = "http://haskell.org/ghc";
    description = "Glasgow Haskell Compiler";
    maintainers = with lib.maintainers; [
      guibou
    ] ++ lib.teams.haskell.members;
    timeout = 24 * 3600;
    inherit (ghc.meta) license platforms;
  };

} // lib.optionalAttrs targetPlatform.useAndroidPrebuilt {
  dontStrip = true;
  dontPatchELF = true;
  noAuditTmpdir = true;
})