all messages for Guix-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 9ff5e3d7c06609d325b95d44d97bf0454908a049 45809 bytes (raw)
name: gnu/packages/gcc.scm 	 # note: path name is non-authoritative(*)

   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
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 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
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 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
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 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
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015, 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2014, 2015, 2016, 2017, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2015, 2016, 2017, 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Carlos Sánchez de La Lama <csanchezdll@gmail.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018, 2020 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2020 Joseph LaFreniere <joseph@lafreniere.xyz>
;;; Copyright © 2020 Guy Fleury Iteriteka <gfleury@disroot.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages gcc)
  #:use-module ((guix licenses)
                #:select (gpl3+ gpl2+ lgpl2.1+ lgpl2.0+ fdl1.3+))
  #:use-module (gnu packages)
  #:use-module (gnu packages bootstrap)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages dejagnu)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages docbook)
  #:use-module (gnu packages graphviz)
  #:use-module (gnu packages elf)
  #:use-module (gnu packages perl)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (guix utils)
  #:use-module (srfi srfi-1)
  #:use-module (ice-9 regex))

(define %gcc-infrastructure
  ;; Base URL for GCC's infrastructure.
  "mirror://gcc/infrastructure/")

(define (gcc-configure-flags-for-triplet target)
  "Return a list of additional GCC `configure' flags for TARGET, a GNU triplet.

The purpose of this procedure is to translate extended GNU triplets---e.g.,
where the OS part is overloaded to denote a specific ABI---into GCC
`configure' options.  We take extended GNU triplets that glibc recognizes."
  (cond ((string-match "^mips64el.*gnuabin?64$" target)
         ;; Triplets recognized by glibc as denoting the N64 ABI; see
         ;; ports/sysdeps/mips/preconfigure.
         '("--with-abi=64"))

        ((string-match "^arm.*-gnueabihf$" target)
         '("--with-arch=armv7-a"
           "--with-float=hard"
           "--with-mode=thumb"
           "--with-fpu=neon"))

        ((and (string-suffix? "-gnu" target)
              (not (string-contains target "-linux")))
         ;; Cross-compilation of libcilkrts in GCC 5.5.0 to GNU/Hurd fails
         ;; with:
         ;;   libcilkrts/runtime/os-unix.c:388:2: error: #error "Unknown architecture"
         ;; Cilk has been removed from GCC 8 anyway.
         '("--disable-libcilkrts"))

        (else
         ;; TODO: Add `arm.*-gnueabi', etc.
         '())))

(define-public gcc-4.7
  (let* ((stripped? #t)      ;whether to strip the compiler, not the libraries
         (maybe-target-tools
          (lambda ()
            ;; Return the `_FOR_TARGET' variables that are needed when
            ;; cross-compiling GCC.
            (let ((target (%current-target-system)))
              (if target
                  (map (lambda (var tool)
                         (string-append (string-append var "_FOR_TARGET")
                                        "=" target "-" tool))
                       '("CC"  "CXX" "LD" "AR" "NM" "OBJDUMP" "RANLIB" "STRIP")
                       '("gcc" "g++" "ld" "ar" "nm" "objdump" "ranlib" "strip"))
                  '()))))
         (libdir
          (let ((base '(or (assoc-ref outputs "lib")
                           (assoc-ref outputs "out"))))
            (lambda ()
              ;; Return the directory that contains lib/libgcc_s.so et al.
              (if (%current-target-system)
                  `(string-append ,base "/" ,(%current-target-system))
                  base))))
         (configure-flags
          (lambda ()
            ;; This is terrible.  Since we have two levels of quasiquotation,
            ;; we have to do this convoluted thing just so we can insert the
            ;; contents of (maybe-target-tools).
            (list 'quasiquote
                  (append
                   '("--enable-plugin"
                     "--enable-languages=c,c++"
                     "--disable-multilib"
                     "--with-system-zlib"

                     ;; No pre-compiled libstdc++ headers, to save space.
                     "--disable-libstdcxx-pch"

                     "--with-local-prefix=/no-gcc-local-prefix"

                     ;; With a separate "lib" output, the build system
                     ;; incorrectly guesses GPLUSPLUS_INCLUDE_DIR, so force
                     ;; it.  (Don't use a versioned sub-directory, that's
                     ;; unnecessary.)
                     ,(string-append "--with-gxx-include-dir="
                                     (assoc-ref %outputs "out")
                                     "/include/c++")

                     ,(let ((libc (assoc-ref %build-inputs "libc")))
                        (if libc
                            (string-append "--with-native-system-header-dir=" libc
                                           "/include")
                            "--without-headers")))

                   ;; Pass the right options for the target triplet.
                   (let ((triplet
                          (or (%current-target-system)
                              (nix-system->gnu-triplet (%current-system)))))
                     (gcc-configure-flags-for-triplet triplet))

                   (maybe-target-tools))))))
    (hidden-package
     (package
       (name "gcc")
       (version "4.7.4")
       (source (origin
                 (method url-fetch)
                 (uri (string-append "mirror://gnu/gcc/gcc-"
                                     version "/gcc-" version ".tar.bz2"))
                 (sha256
                  (base32
                   "10k2k71kxgay283ylbbhhs51cl55zn2q38vj5pk4k950qdnirrlj"))
                 (patches (search-patches "gcc-4-compile-with-gcc-5.patch"
                                          "gcc-fix-texi2pod.patch"))))
       (build-system gnu-build-system)

       ;; Separate out the run-time support libraries because all the
       ;; dynamic-linked objects depend on it.
       (outputs '("out"                    ;commands, etc. (60+ MiB)
                  "lib"                    ;libgcc_s, libgomp, etc. (15+ MiB)
                  "debug"))                ;debug symbols of run-time libraries

       (inputs `(("gmp" ,gmp)
                 ("mpfr" ,mpfr)
                 ("mpc" ,mpc)
                 ("libelf" ,libelf)
                 ("zlib" ,zlib)))

       ;; GCC < 5 is one of the few packages that doesn't ship .info files.
       ;; Newer texinfos fail to build the manual, so we use an older one.
       (native-inputs `(("perl" ,perl)   ;for manpages
                        ("texinfo" ,texinfo-5)))

       (arguments
        `(#:out-of-source? #t
          #:configure-flags ,(configure-flags)
          #:make-flags
          ;; None of the flags below are needed when doing a Canadian cross.
          ;; TODO: Simplify this.
          ,(if (%current-target-system)
               (if stripped?
                   ''("CFLAGS=-g0 -O2")
                   ''())
               `(let* ((libc        (assoc-ref %build-inputs "libc"))
                       (libc-native (or (assoc-ref %build-inputs "libc-native")
                                        libc)))
                  `(,@(if libc
                          (list (string-append "LDFLAGS_FOR_TARGET="
                                               "-B" libc "/lib "
                                               "-Wl,-dynamic-linker "
                                               "-Wl," libc
                                               ,(glibc-dynamic-linker)))
                          '())

                    ;; Native programs like 'genhooks' also need that right.
                    ,(string-append "LDFLAGS="
                                    "-Wl,-rpath=" libc-native "/lib "
                                    "-Wl,-dynamic-linker "
                                    "-Wl," libc-native ,(glibc-dynamic-linker))
                    ,(string-append "BOOT_CFLAGS=-O2 "
                                    ,(if stripped? "-g0" "-g")))))

          #:tests? #f

          #:phases
          (modify-phases %standard-phases
            (add-before 'configure 'pre-configure
              (lambda* (#:key inputs outputs #:allow-other-keys)
                (let ((libdir ,(libdir))
                      (libc   (assoc-ref inputs "libc")))
                  (when libc
                    ;; The following is not performed for `--without-headers'
                    ;; cross-compiler builds.

                    ;; Join multi-line definitions of GLIBC_DYNAMIC_LINKER* into a
                    ;; single line, to allow the next step to work properly.
                    (for-each
                     (lambda (x)
                       (substitute* (find-files "gcc/config"
                                                "^(linux|gnu|sysv4)(64|-elf|-eabi)?\\.h$")
                         (("(#define (GLIBC|GNU_USER)_DYNAMIC_LINKER.*)\\\\\n$" _ line)
                          line)))
                     '(1 2 3))

                    ;; Fix the dynamic linker's file name.
                    (substitute* (find-files "gcc/config"
                                             "^(linux|gnu|sysv4)(64|-elf|-eabi)?\\.h$")
                      (("#define (GLIBC|GNU_USER)_DYNAMIC_LINKER([^ \t]*).*$"
                        _ gnu-user suffix)
                       (format #f "#define ~a_DYNAMIC_LINKER~a \"~a\"~%"
                               gnu-user suffix
                               (string-append libc ,(glibc-dynamic-linker)))))

                    ;; Tell where to find libstdc++, libc, and `?crt*.o', except
                    ;; `crt{begin,end}.o', which come with GCC.
                    (substitute* (find-files "gcc/config"
                                             "^gnu-user.*\\.h$")
                      (("#define GNU_USER_TARGET_LIB_SPEC (.*)$" _ suffix)
                       ;; Help libgcc_s.so be found (see also below.)  Always use
                       ;; '-lgcc_s' so that libgcc_s.so is always found by those
                       ;; programs that use 'pthread_cancel' (glibc dlopens
                       ;; libgcc_s.so when pthread_cancel support is needed, but
                       ;; having it in the application's RUNPATH isn't enough; see
                       ;; <http://sourceware.org/ml/libc-help/2013-11/msg00023.html>.)
                       ;;
                       ;; NOTE: The '-lgcc_s' added below needs to be removed in a
                       ;; later phase of %gcc-static.  If you change the string
                       ;; below, make sure to update the relevant code in
                       ;; %gcc-static package as needed.
                       (format #f "#define GNU_USER_TARGET_LIB_SPEC \
\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib -lgcc_s}} \" ~a"
                               libc libc libdir suffix))
                      (("#define GNU_USER_TARGET_STARTFILE_SPEC.*$" line)
                       (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\"
#define STANDARD_STARTFILE_PREFIX_2 \"\"
~a"
                               libc line)))

                    ;; The rs6000 (a.k.a. powerpc) config in GCC does not use
                    ;; GNU_USER_* defines.  Do the above for this case.
                    (substitute*
                        "gcc/config/rs6000/sysv4.h"
                      (("#define LIB_LINUX_SPEC (.*)$" _ suffix)
                       (format #f "#define LIB_LINUX_SPEC \
\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib -lgcc_s}} \" ~a"
                               libc libc libdir suffix))
                      (("#define	STARTFILE_LINUX_SPEC.*$" line)
                       (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\"
#define STANDARD_STARTFILE_PREFIX_2 \"\"
~a"
                               libc line))))

                  ;; Don't retain a dependency on the build-time sed.
                  (substitute* "fixincludes/fixincl.x"
                    (("static char const sed_cmd_z\\[\\] =.*;")
                     "static char const sed_cmd_z[] = \"sed\";"))

                  ;; Aarch64 support didn't land in GCC until the 4.8 series.
                  (when (file-exists? "gcc/config/aarch64")
                    ;; Force Aarch64 libdir to be /lib and not /lib64
                    (substitute* "gcc/config/aarch64/t-aarch64-linux"
                      (("lib64") "lib")))

                  (when (file-exists? "libbacktrace")
                    ;; GCC 4.8+ comes with libbacktrace.  By default it builds
                    ;; with -Werror, which fails with a -Wcast-qual error in glibc
                    ;; 2.21's stdlib-bsearch.h.  Remove -Werror.
                    (substitute* "libbacktrace/configure"
                      (("WARN_FLAGS=(.*)-Werror" _ flags)
                       (string-append "WARN_FLAGS=" flags)))

                    (when (file-exists? "libsanitizer/libbacktrace")
                      ;; Same in libsanitizer's bundled copy (!) found in 4.9+.
                      (substitute* "libsanitizer/libbacktrace/Makefile.in"
                        (("-Werror")
                         ""))))

                  ;; Add a RUNPATH to libstdc++.so so that it finds libgcc_s.
                  ;; See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32354>
                  ;; and <http://bugs.gnu.org/20358>.
                  (substitute* "libstdc++-v3/src/Makefile.in"
                    (("^OPT_LDFLAGS = ")
                     "OPT_LDFLAGS = -Wl,-rpath=$(libdir) "))

                  ;; Move libstdc++*-gdb.py to the "lib" output to avoid a
                  ;; circularity between "out" and "lib".  (Note:
                  ;; --with-python-dir is useless because it imposes $(prefix) as
                  ;; the parent directory.)
                  (substitute* "libstdc++-v3/python/Makefile.in"
                    (("pythondir = .*$")
                     (string-append "pythondir = " libdir "/share"
                                    "/gcc-$(gcc_version)/python\n")))

                  ;; Avoid another circularity between the outputs: this #define
                  ;; ends up in auto-host.h in the "lib" output, referring to
                  ;; "out".  (This variable is used to augment cpp's search path,
                  ;; but there's nothing useful to look for here.)
                  (substitute* "gcc/config.in"
                    (("PREFIX_INCLUDE_DIR")
                     "PREFIX_INCLUDE_DIR_isnt_necessary_here"))
                  #t)))

            (add-after 'configure 'post-configure
              (lambda _
                ;; Don't store configure flags, to avoid retaining references to
                ;; build-time dependencies---e.g., `--with-ppl=/gnu/store/xxx'.
                (substitute* "Makefile"
                  (("^TOPLEVEL_CONFIGURE_ARGUMENTS=(.*)$" _ rest)
                   "TOPLEVEL_CONFIGURE_ARGUMENTS=\n"))
                #t)))))

       (native-search-paths
        ;; Use the language-specific variables rather than 'CPATH' because they
        ;; are equivalent to '-isystem' whereas 'CPATH' is equivalent to '-I'.
        ;; The intent is to allow headers that are in the search path to be
        ;; treated as "system headers" (headers exempt from warnings) just like
        ;; the typical /usr/include headers on an FHS system.
        (list (search-path-specification
               (variable "C_INCLUDE_PATH")
               (files '("include")))
              (search-path-specification
               (variable "CPLUS_INCLUDE_PATH")
               ;; Add 'include/c++' here so that <cstdlib>'s "#include_next
               ;; <stdlib.h>" finds GCC's <stdlib.h>, not libc's.
               (files '("include/c++" "include")))
              (search-path-specification
               (variable "LIBRARY_PATH")
               (files '("lib" "lib64")))))

       (properties `((gcc-libc . ,(assoc-ref inputs "libc"))))
       (synopsis "GNU Compiler Collection")
       (description
        "GCC is the GNU Compiler Collection.  It provides compiler front-ends
for several languages, including C, C++, Objective-C, Fortran, Java, Ada, and
Go.  It also includes runtime support libraries for these languages.")
       (license gpl3+)
       (supported-systems (delete "aarch64-linux" %supported-systems))
       (home-page "https://gcc.gnu.org/")))))

(define-public gcc-4.8
  (package (inherit gcc-4.7)
    (version "4.8.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.bz2"))
              (sha256
               (base32
                "08yggr18v373a1ihj0rg2vd6psnic42b518xcgp3r9k81xz1xyr2"))
              (patches (search-patches "gcc-arm-link-spec-fix.patch"
                                       "gcc-4.8-libsanitizer-fix.patch"
                                       "gcc-asan-missing-include.patch"
                                       "gcc-fix-texi2pod.patch"))
              (modules '((guix build utils)))
              ;; This is required for building with glibc-2.26.
              ;; https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81712
              (snippet
               '(begin
                  (for-each
                   (lambda (dir)
                     (substitute* (string-append "libgcc/config/"
                                                 dir "/linux-unwind.h")
                       (("struct ucontext") "ucontext_t")))
                   '("aarch64" "alpha" "bfin" "i386" "m68k"
                     "pa" "sh" "tilepro" "xtensa"))
                  #t))))
    (supported-systems %supported-systems)
    (inputs
     `(("isl" ,isl-0.11)
       ("cloog" ,cloog)
       ,@(package-inputs gcc-4.7)))))

(define-public gcc-4.9
  (package (inherit gcc-4.8)
    (version "4.9.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.bz2"))
              (sha256
               (base32
                "14l06m7nvcvb0igkbip58x59w3nq6315k6jcz3wr9ch1rn9d44bc"))
              (patches (search-patches "gcc-4.9-libsanitizer-fix.patch"
                                       "gcc-4.9-libsanitizer-ustat.patch"
                                       "gcc-4.9-libsanitizer-mode-size.patch"
                                       "gcc-arm-bug-71399.patch"
                                       "gcc-asan-missing-include.patch"
                                       "gcc-libvtv-runpath.patch"
                                       "gcc-fix-texi2pod.patch"))
              (modules '((guix build utils)))
              ;; This is required for building with glibc-2.26.
              ;; https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81712
              (snippet
               '(begin
                  (for-each
                   (lambda (dir)
                     (substitute* (string-append "libgcc/config/"
                                                 dir "/linux-unwind.h")
                       (("struct ucontext") "ucontext_t")))
                   '("aarch64" "alpha" "bfin" "i386" "m68k" "nios2"
                     "pa" "sh" "tilepro" "xtensa"))
                  #t))))
    ;; Override inherited texinfo-5 with latest version.
    (native-inputs `(("perl" ,perl)   ;for manpages
                     ("texinfo" ,texinfo)))
    (arguments
     (if (%current-target-system)
         (package-arguments gcc-4.8)
         ;; For native builds of GCC 4.9 and GCC 5, the C++ include path needs
         ;; to be adjusted so it does not interfere with GCC's own build processes.
         (substitute-keyword-arguments (package-arguments gcc-4.8)
           ((#:modules modules %gnu-build-system-modules)
            `((srfi srfi-1)
              ,@modules))
           ((#:phases phases)
            `(modify-phases ,phases
               (add-after 'set-paths 'adjust-CPLUS_INCLUDE_PATH
                 (lambda* (#:key inputs #:allow-other-keys)
                   (let ((libc (assoc-ref inputs "libc"))
                         (gcc (assoc-ref inputs  "gcc")))
                     (setenv "CPLUS_INCLUDE_PATH"
                             (string-join (fold delete
                                                (string-split (getenv "CPLUS_INCLUDE_PATH")
                                                              #\:)
                                                (list (string-append libc "/include")
                                                      (string-append gcc "/include/c++")))
                                          ":"))
                     (format #t
                             "environment variable `CPLUS_INCLUDE_PATH' changed to ~a~%"
                             (getenv "CPLUS_INCLUDE_PATH"))
                     #t))))))))))

(define-public gcc-5
  ;; Note: GCC >= 5 ships with .info files but 'make install' fails to install
  ;; them in a VPATH build.
  (package (inherit gcc-4.9)
    (version "5.5.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.xz"))
              (sha256
               (base32
                "11zd1hgzkli3b2v70qsm2hyqppngd4616qc96lmm9zl2kl9yl32k"))
              (patches (search-patches "gcc-arm-bug-71399.patch"
                                       "gcc-libsanitizer-ustat.patch"
                                       "gcc-strmov-store-file-names.patch"
                                       "gcc-5.0-libvtv-runpath.patch"
                                       "gcc-5-source-date-epoch-1.patch"
                                       "gcc-5-source-date-epoch-2.patch"
                                       "gcc-6-libsanitizer-mode-size.patch"
                                       "gcc-fix-texi2pod.patch"
                                       "gcc-5-hurd.patch"))
              (modules '((guix build utils)))
              (snippet
               ;; Fix 'libcc1/configure' error when cross-compiling GCC.
               ;; Without that, 'libcc1/configure' wrongfully determines that
               ;; '-rdynamic' support is missing because $gcc_cv_objdump is
               ;; empty:
               ;;
               ;;   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67590
               ;;   http://cgit.openembedded.org/openembedded-core/commit/?id=f6e47aa9b12f9ab61530c40e0343f451699d9077
               '(begin
                  (substitute* "libcc1/configure"
                    (("\\$gcc_cv_objdump -T")
                     "$OBJDUMP_FOR_TARGET -T"))
                  #t))))
    (inputs
     `(;; GCC5 needs <isl/band.h> which is removed in later versions.
       ("isl" ,isl-0.18)
       ,@(package-inputs gcc-4.7)))))

(define-public gcc-6
  (package
    (inherit gcc-5)
    (version "6.5.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.xz"))
              (sha256
               (base32
                "0i89fksfp6wr1xg9l8296aslcymv2idn60ip31wr9s4pwin7kwby"))
              (patches (search-patches "gcc-strmov-store-file-names.patch"
                                       "gcc-6-libsanitizer-mode-size.patch"
                                       "gcc-6-source-date-epoch-1.patch"
                                       "gcc-6-source-date-epoch-2.patch"
                                       "gcc-5.0-libvtv-runpath.patch"))))

    ;; GCC 4.9 and 5 has a workaround that is not needed for GCC 6 and later.
    (arguments (package-arguments gcc-4.8))

    (inputs
     `(("isl" ,isl)
       ,@(package-inputs gcc-4.7)))))

(define-public gcc-7
  (package
    (inherit gcc-6)
    (version "7.5.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.xz"))
              (sha256
               (base32
                "0qg6kqc5l72hpnj4vr6l0p69qav0rh4anlkk3y55540zy3klc6dq"))
              (patches (search-patches "gcc-strmov-store-file-names.patch"
                                       "gcc-7-libsanitizer-mode-size.patch"
                                       "gcc-5.0-libvtv-runpath.patch"))))
    (description
     "GCC is the GNU Compiler Collection.  It provides compiler front-ends
for several languages, including C, C++, Objective-C, Fortran, Ada, and Go.
It also includes runtime support libraries for these languages.")))

(define-public gcc-8
  (package
    (inherit gcc-7)
    (version "8.4.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gcc/gcc-"
                                  version "/gcc-" version ".tar.xz"))
              (sha256
               (base32
                "1m1d3gfix56w4aq8myazzfffkl8bqcrx4jhhapnjf7qfs596w2p3"))
              (patches (search-patches "gcc-8-strmov-store-file-names.patch"
                                       "gcc-5.0-libvtv-runpath.patch"))))))

(define-public gcc-9
  (package
   (inherit gcc-8)
   (version "9.3.0")
   (source (origin
            (method url-fetch)
            (uri (string-append "mirror://gnu/gcc/gcc-"
                                version "/gcc-" version ".tar.xz"))
            (sha256
             (base32
              "1la2yy27ziasyf0jvzk58y1i5b5bq2h176qil550bxhifs39gqbi"))
            (patches (search-patches "gcc-9-strmov-store-file-names.patch"
                                     "gcc-9-asan-fix-limits-include.patch"
                                     "gcc-5.0-libvtv-runpath.patch"))))))

(define-public gcc-10
  (package
   (inherit gcc-8)
   (version "10.1.0")
   (source (origin
            (method url-fetch)
            (uri (string-append "mirror://gnu/gcc/gcc-"
                                version "/gcc-" version ".tar.xz"))
            (sha256
             (base32
              "18kyds3ss4j7in8shlsbmjafdhin400mq739d0dnyrabhhiqm2dn"))
            (patches (search-patches "gcc-9-strmov-store-file-names.patch"
                                     "gcc-5.0-libvtv-runpath.patch"))))))

;; Note: When changing the default gcc version, update
;;       the gcc-toolchain-* definitions and the gfortran definition
;;       accordingly.
(define-public gcc gcc-7)

(define-public (make-libstdc++ gcc)
  "Return a libstdc++ package based on GCC.  The primary use case is when
using compilers other than GCC."
  (package
    (inherit gcc)
    (name "libstdc++")
    (arguments
     `(#:out-of-source? #t
       #:phases (alist-cons-before
                 'configure 'chdir
                 (lambda _
                   (chdir "libstdc++-v3")
                   #t)
                 %standard-phases)
       #:configure-flags `("--disable-libstdcxx-pch"
                           ,(string-append "--with-gxx-include-dir="
                                           (assoc-ref %outputs "out")
                                           "/include"))))
    (outputs '("out" "debug"))
    (inputs '())
    (native-inputs '())
    (propagated-inputs '())
    (synopsis "GNU C++ standard library")))

(define-public libstdc++-4.9
  (make-libstdc++ gcc-4.9))

(define (make-libiberty gcc)
  "Return a libiberty package based on GCC."
  (package
    (inherit gcc)
    (name "libiberty")
    (arguments
     `(#:out-of-source? #t
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'chdir
           (lambda _
             (chdir "libiberty")
             #t))
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out     (assoc-ref outputs "out"))
                    (lib     (string-append out "/lib/"))
                    (include (string-append out "/include/")))
               (install-file "libiberty.a" lib)
               (install-file "../include/libiberty.h" include))
             #t)))))
    (inputs '())
    (outputs '("out"))
    (native-inputs '())
    (propagated-inputs '())
    (properties '())
    (synopsis "Collection of subroutines used by various GNU programs")))

(define-public libiberty
  (make-libiberty gcc))

(define* (custom-gcc gcc name languages
                     #:optional
                     (search-paths (package-native-search-paths gcc))
                     #:key (separate-lib-output? #t))
  "Return a custom version of GCC that supports LANGUAGES.  Use SEARCH-PATHS
as the 'native-search-paths' field."
  (package (inherit gcc)
    (name name)
    (outputs (if separate-lib-output?
                 (package-outputs gcc)
                 (delete "lib" (package-outputs gcc))))
    (native-search-paths search-paths)
    (properties (alist-delete 'hidden? (package-properties gcc)))
    (arguments
     (substitute-keyword-arguments (package-arguments gcc)
       ((#:modules modules %gnu-build-system-modules)
        `(,@modules
          (srfi srfi-1)
          (srfi srfi-26)
          (ice-9 regex)))
       ((#:configure-flags flags)
        `(cons (string-append "--enable-languages="
                              ,(string-join languages ","))
               (remove (cut string-match "--enable-languages.*" <>)
                       ,flags)))
       ((#:phases phases)
        `(modify-phases ,phases
           (add-after 'install 'remove-broken-or-conflicting-files
             (lambda* (#:key outputs #:allow-other-keys)
               (for-each delete-file
                         (find-files (string-append (assoc-ref outputs "out") "/bin")
                                     ".*(c\\+\\+|cpp|g\\+\\+|gcov|gcc|gcc-.*)"))
               #t))))))))

(define %generic-search-paths
  ;; This is the language-neutral search path for GCC.  Entries in $CPATH are
  ;; not considered "system headers", which means GCC can raise warnings for
  ;; issues in those headers.  'CPATH' is the only one that works for
  ;; front-ends not in the C family.
  (list (search-path-specification
         (variable "CPATH")
         (files '("include")))
        (search-path-specification
         (variable "LIBRARY_PATH")
         (files '("lib" "lib64")))))

(define-public gfortran
  (hidden-package
   (custom-gcc gcc "gfortran" '("fortran")
               %generic-search-paths)))

(define-public gdc-10
  (hidden-package
   (custom-gcc gcc-10 "gdc" '("d")
               %generic-search-paths)))

(define-public libgccjit
  (package
    (inherit gcc-9)
    (name "libgccjit")
    (outputs (delete "lib" (package-outputs gcc)))
    (properties (alist-delete 'hidden? (package-properties gcc)))
    (arguments
     (substitute-keyword-arguments `(#:modules ((guix build gnu-build-system)
                                                (guix build utils)
                                                (ice-9 regex)
                                                (srfi srfi-1)
                                                (srfi srfi-26))
                                     ,@(package-arguments gcc))
       ((#:configure-flags flags)
        `(append `("--enable-host-shared"
                   ,(string-append "--enable-languages=jit"))
                 (remove (cut string-match "--enable-languages.*" <>)
                         ,flags)))
       ((#:phases phases)
        `(modify-phases ,phases
           (add-after 'install 'remove-broken-or-conflicting-files
             (lambda* (#:key outputs #:allow-other-keys)
               (for-each delete-file
                         (find-files (string-append (assoc-ref outputs "out") "/bin")
                                     ".*(c\\+\\+|cpp|g\\+\\+|gcov|gcc|gcc-.*)"))
               #t))))))))


(define-public gccgo-4.9
  (custom-gcc gcc-4.9 "gccgo" '("go")
              %generic-search-paths
              ;; Suppress the separate "lib" output, because otherwise the
              ;; "lib" and "out" outputs would refer to each other, creating
              ;; a cyclic dependency.  <http://debbugs.gnu.org/18101>
              #:separate-lib-output? #f))

(define %objc-search-paths
  (list (search-path-specification
         (variable "OBJC_INCLUDE_PATH")
         (files '("include")))
        (search-path-specification
         (variable "LIBRARY_PATH")
         (files '("lib" "lib64")))))

(define-public gcc-objc-4.8
  (custom-gcc gcc-4.8 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-4.9
  (custom-gcc gcc-4.9 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-5
  (custom-gcc gcc-5 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-6
  (custom-gcc gcc-6 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-7
  (custom-gcc gcc-7 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-8
  (custom-gcc gcc-8 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-9
  (custom-gcc gcc-9 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc-10
  (custom-gcc gcc-10 "gcc-objc" '("objc")
              %objc-search-paths))

(define-public gcc-objc gcc-objc-7)

(define %objc++-search-paths
  (list (search-path-specification
         (variable "OBJCPLUS_INCLUDE_PATH")
         (files '("include")))
        (search-path-specification
         (variable "LIBRARY_PATH")
         (files '("lib" "lib64")))))

(define-public gcc-objc++-4.8
  (custom-gcc gcc-4.8 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-4.9
  (custom-gcc gcc-4.9 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-5
  (custom-gcc gcc-5 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-6
  (custom-gcc gcc-6 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-7
  (custom-gcc gcc-7 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-8
  (custom-gcc gcc-8 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-9
  (custom-gcc gcc-9 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++-10
  (custom-gcc gcc-10 "gcc-objc++" '("obj-c++")
              %objc++-search-paths))

(define-public gcc-objc++ gcc-objc++-7)

(define (make-libstdc++-doc gcc)
  "Return a package with the libstdc++ documentation for GCC."
  (package
    (inherit gcc)
    (name "libstdc++-doc")
    (version (package-version gcc))
    (synopsis "GNU libstdc++ documentation")
    (outputs '("out"))
    (native-inputs `(("doxygen" ,doxygen)
                     ("texinfo" ,texinfo)
                     ("libxml2" ,libxml2)
                     ("libxslt" ,libxslt)
                     ("docbook-xml" ,docbook-xml)
                     ("docbook-xsl" ,docbook-xsl)
                     ("graphviz" ,graphviz))) ;for 'dot', invoked by 'doxygen'
    (inputs '())
    (propagated-inputs '())
    (arguments
     '(#:out-of-source? #t
       #:tests? #f                                ;it's just documentation
       #:phases (modify-phases %standard-phases
                  (add-before 'configure 'chdir
                              (lambda _
                                (chdir "libstdc++-v3")
                                #t))
                  (add-before 'configure 'set-xsl-directory
                              (lambda* (#:key inputs #:allow-other-keys)
                                (let ((docbook (assoc-ref inputs "docbook-xsl")))
                                  (substitute* (find-files "doc"
                                                           "^Makefile\\.in$")
                                    (("@XSL_STYLE_DIR@")
                                     (string-append
                                      docbook "/xml/xsl/"
                                      (strip-store-file-name docbook))))
                                  #t)))
                  (replace 'build
                           (lambda _
                             ;; XXX: There's also a 'doc-info' target, but it
                             ;; relies on docbook2X, which itself relies on
                             ;; DocBook 4.1.2, which is not really usable
                             ;; (lacks a catalog.xml.)
                             (invoke "make"
                                     "doc-html"
                                     "doc-man")))
                  (replace 'install
                           (lambda* (#:key outputs #:allow-other-keys)
                             (let ((out (assoc-ref outputs "out")))
                               (invoke "make"
                                       "doc-install-html"
                                       "doc-install-man")))))))
    (properties (alist-delete 'hidden? (package-properties gcc)))))

(define-public libstdc++-doc-5
  (make-libstdc++-doc gcc-5))

(define-public libstdc++-doc-9
  (make-libstdc++-doc gcc-9))

(define-public isl
  (package
    (name "isl")
    (version "0.22.1")
    (source (origin
             (method url-fetch)
             (uri (list (string-append
                         "http://isl.gforge.inria.fr/isl-"
                         version
                         ".tar.bz2")
                        (string-append %gcc-infrastructure
                                       name "-" version ".tar.bz2")))
             (sha256
              (base32
               "1kf54jib0nind1pvakblnfhimmwzm0y1llz8470ag0di5vwqwrhs"))))
    (build-system gnu-build-system)
    (outputs '("out" "static"))
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (add-after 'install 'move-static-library
                    (lambda* (#:key outputs #:allow-other-keys)
                      (let* ((out (assoc-ref outputs "out"))
                             (static (assoc-ref outputs "static"))
                             (source (string-append out "/lib/libisl.a"))
                             (target (string-append static "/lib/libisl.a")))
                        (mkdir-p (dirname target))
                        (link source target)
                        (delete-file source)

                        ;; Remove reference to libisl.a from the .la file so
                        ;; libtool looks for it in the usual locations.
                        (substitute* (string-append out "/lib/libisl.la")
                          (("^old_library=.*")
                           "old_library=''\n"))
                        #t))))))
    (inputs `(("gmp" ,gmp)))
    (home-page "http://isl.gforge.inria.fr/")
    (synopsis
     "Manipulating sets and relations of integer points \
bounded by linear constraints")
    (description
     "isl is a library for manipulating sets and relations of integer points
bounded by linear constraints.  Supported operations on sets include
intersection, union, set difference, emptiness check, convex hull, (integer)
affine hull, integer projection, computing the lexicographic minimum using
parametric integer programming, coalescing and parametric vertex
enumeration.  It also includes an ILP solver based on generalized basis
reduction, transitive closures on maps (which may encode infinite graphs),
dependence analysis and bounds on piecewise step-polynomials.")
    (license lgpl2.1+)))

(define-public isl-0.18
  (package
    (inherit isl)
    (version "0.18")
    (source (origin
              (method url-fetch)
              (uri (list (string-append "http://isl.gforge.inria.fr/isl-"
                                        version ".tar.bz2")
                         (string-append %gcc-infrastructure
                                        "isl-" version ".tar.bz2")))
              (sha256
               (base32
                "06ybml6llhi4i56q90jnimbcgk1lpcdwhy9nxdxra2hxz3bhz2vb"))))))

(define-public isl-0.11
  (package
    (inherit isl)
    (name "isl")
    (version "0.11.1")
    (source (origin
             (method url-fetch)
             (uri (list (string-append
                         "http://isl.gforge.inria.fr/isl-"
                         version
                         ".tar.bz2")
                        (string-append %gcc-infrastructure
                                       name "-" version ".tar.bz2")))
             (sha256
              (base32
               "13d9cqa5rzhbjq0xf0b2dyxag7pqa72xj9dhsa03m8ccr1a4npq9"))
             (patches (search-patches "isl-0.11.1-aarch64-support.patch"))))))

(define-public cloog
  (package
    (name "cloog")
    (version "0.18.0")
    (source
     (origin
      (method url-fetch)
      (uri (list (string-append
                  "http://www.bastoul.net/cloog/pages/download/count.php3?url=cloog-"
                  version
                  ".tar.gz")
                 (string-append %gcc-infrastructure
                                name "-" version ".tar.gz")))
      (sha256
       (base32
        "0a12rwfwp22zd0nlld0xyql11cj390rrq1prw35yjsw8wzfshjhw"))
      (file-name (string-append name "-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (inputs `(("gmp" ,gmp)
              ("isl" ,isl-0.11)))
    (arguments '(#:configure-flags '("--with-isl=system")))
    (home-page "http://www.cloog.org/")
    (synopsis "Library to generate code for scanning Z-polyhedra")
    (description
     "CLooG is a free software library to generate code for scanning
Z-polyhedra.  That is, it finds a code (e.g., in C, FORTRAN...) that
reaches each integral point of one or more parameterized polyhedra.
CLooG has been originally written to solve the code generation problem
for optimizing compilers based on the polytope model.  Nevertheless it
is used now in various area e.g., to build control automata for
high-level synthesis or to find the best polynomial approximation of a
function.  CLooG may help in any situation where scanning polyhedra
matters.  While the user has full control on generated code quality,
CLooG is designed to avoid control overhead and to produce a very
effective code.")
    (license gpl2+)))

(define-public gnu-c-manual
  (package
    (name "gnu-c-manual")
    (version "0.2.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/gnu-c-manual/gnu-c-manual-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "1sfsj9256w18qzylgag2h5h377aq8in8929svblfnj9svfriqcys"))))
    (build-system gnu-build-system)
    (native-inputs `(("texinfo" ,texinfo)))
    (arguments
     '(#:phases (modify-phases %standard-phases
                  (delete 'configure)
                  (delete 'check)
                  (replace 'build
                           (lambda _
                             (invoke "make"
                                     "gnu-c-manual.info"
                                     "gnu-c-manual.html")))
                  (replace 'install
                           (lambda* (#:key outputs #:allow-other-keys)
                             (let* ((out (assoc-ref outputs "out"))
                                    (info (string-append out "/share/info"))
                                    (html (string-append
                                           out "/share/doc/gnu-c-manual")))
                               (mkdir-p info)
                               (mkdir-p html)

                               (for-each (lambda (file)
                                           (copy-file file
                                                      (string-append info "/"
                                                                     file)))
                                         (find-files "." "\\.info(-[0-9])?$"))
                               (for-each (lambda (file)
                                           (copy-file file
                                                      (string-append html "/"
                                                                     file)))
                                         (find-files "." "\\.html$"))
                               #t))))))
    (synopsis "Reference manual for the C programming language")
    (description
     "This is a reference manual for the C programming language, as
implemented by the GNU C Compiler (gcc).  As a reference, it is not intended
to be a tutorial of the language.  Rather, it outlines all of the constructs
of the language.  Library functions are not included.")
    (home-page "https://www.gnu.org/software/gnu-c-manual/")
    (license fdl1.3+)))

debug log:

solving 9ff5e3d7c0 ...
found 9ff5e3d7c0 in https://git.savannah.gnu.org/cgit/guix.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/guix.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.