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* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Update comment on where
to find shared linker name.
(make-raw-bag): Also use raw-build-guile3 when building for the 64bit Hurd.
* guix/platforms/x86.scm (x86_64-gnu): New exported variable.
* guix/utils.scm (target-hurd64? system-hurd64?): New procedures.
* gnu/packages/gcc.scm: (current-gcc): Use target-hurd64? in new procedure to
select gcc-14 on 64bit Hurd.
(libstdc++): Change to procedure.
(libstdc++-headers): Update accordingly.
* gnu/packages/commencement.scm (current-gcc-toolchain): Likewise, to select
gcc-toolchain-14 on 64bit Hurd.
* gnu/packages/cross-base.scm (%xgcc): Use current-gcc.
(cross-kernel-headers*): Use target-hurd? instead of custom "i586..."
matching to also use xhurd-core-headers for target-hurd64.
* gnu/packages/make-bootstrap.scm (package-with-relocatable-glibc):
Capture (current-gcc) before resetting %current-target-system.
[native-inputs]:  Move final-inputs before cross-packages.
(%glibc-stripped): Likewise.
(%gcc-static): Change to procedure.
(%gcc-stripped): Likewise, update accordingly.
(%gcc-bootstrap-tarball): Likewise, update accordingly.
(make-guile-static)[arguments]: When building for the 64bit Hurd, add
"lt_cv_prog_compiler_static_works=yes" to #:configure-flags to convince
libtool to actually link guile statically.
(%binutils-static)[arguments]: When building for the 64bit Hurd, add
"lt_cv_prog_compiler_static_works=yes", "lt_cv_prog_compiler_static_works_CXX=yes"
to #:make-flags to convince to actually link the binaries statically.
* gnu/ci.scm (%core-packages): Update accordingly.
* gnu/packages/patches/gcc-14-cross-without-bootstrap.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/cross-base.scm (cross-gcc)[origin]: Use it when
cross-building gcc >= 14.

Change-Id: I4ae189e7e5188ced91744b89fe9d753b6a1fca78
---
 gnu/ci.scm                      |  4 +--
 gnu/packages/bootstrap.scm      |  3 +-
 gnu/packages/commencement.scm   |  6 ++--
 gnu/packages/cross-base.scm     |  6 ++--
 gnu/packages/gcc.scm            | 32 ++++++++++---------
 gnu/packages/make-bootstrap.scm | 56 ++++++++++++++++++++++-----------
 guix/platforms/x86.scm          | 11 ++++++-
 guix/utils.scm                  | 15 ++++++++-
 8 files changed, 90 insertions(+), 43 deletions(-)

diff --git a/gnu/ci.scm b/gnu/ci.scm
index 4e282d197f..e7e839d968 100644
--- a/gnu/ci.scm
+++ b/gnu/ci.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2012-2024 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2017, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2017, 2020, 2024 Janneke Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2018, 2019 Clément Lassieur <clement@lassieur.org>
 ;;; Copyright © 2020 Julien Lepiller <julien@lepiller.eu>
 ;;; Copyright © 2020, 2021 Mathieu Othacehe <othacehe@gnu.org>
@@ -146,7 +146,7 @@ (define %core-packages
         %bootstrap-binaries-tarball
         %binutils-bootstrap-tarball
         (%glibc-bootstrap-tarball)
-        %gcc-bootstrap-tarball
+        (%gcc-bootstrap-tarball)
         %guile-bootstrap-tarball
         %bootstrap-tarballs))
 
diff --git a/gnu/packages/bootstrap.scm b/gnu/packages/bootstrap.scm
index c4640b62e1..234d001fc1 100644
--- a/gnu/packages/bootstrap.scm
+++ b/gnu/packages/bootstrap.scm
@@ -558,7 +558,8 @@ (define* (make-raw-bag name
     (name name)
     (system system)
     (build-inputs inputs)
-    (build (cond ((target-riscv64?)
+    (build (cond ((or (target-riscv64?)
+                      (target-hurd64?))
                   raw-build-guile3)
                  (else raw-build)))))
 
diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index 70641267a8..a000cbfdc5 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -3643,10 +3643,12 @@ (define-public gcc-toolchain-14
 ;; The default GCC
 (define (current-gcc-toolchain)
   "The current default gcc-toolchain version."
-  gcc-toolchain-11)
+  (if (target-hurd64?)
+      gcc-toolchain-14
+      gcc-toolchain-11))
 
 (define-public gcc-toolchain
-  (deprecated-package "gcc-toolchain" gcc-toolchain-11))
+  (deprecated-package "gcc-toolchain" (current-gcc-toolchain)))
 
 (define-public gcc-toolchain-aka-gcc
   ;; It's natural for users to try "guix install gcc".  This package
diff --git a/gnu/packages/cross-base.scm b/gnu/packages/cross-base.scm
index 9c701efae8..7b32a6b64e 100644
--- a/gnu/packages/cross-base.scm
+++ b/gnu/packages/cross-base.scm
@@ -641,9 +641,9 @@ (define* (cross-kernel-headers* target
                 ("hurd-headers" ,xhurd-headers)
                 ("hurd-minimal" ,xhurd-minimal)))))
 
-  (match target
-    ((or "i586-pc-gnu" "i586-gnu") xhurd-core-headers)
-    (_ xlinux-headers)))
+  (if (target-hurd? target)
+      xhurd-core-headers
+      xlinux-headers))
 
 (define* (cross-libc . args)
   (if (or (= (length args) 1) (contains-keyword? args))
diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 3b5d05b9a9..fc3746fb05 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -861,10 +861,12 @@ (define-public gcc-14
 ;;       the gcc-toolchain-* definitions.
 (define (current-gcc)
   "The current default gcc version."
-  gcc-11)
+  (if (target-hurd64?)
+      gcc-14
+      gcc-11))
 
 (define-public gcc
-  (deprecated-package "gcc" gcc-11))
+  (deprecated-package "gcc" (current-gcc)))
 
 
 ;;;
@@ -903,15 +905,15 @@ (define-public gcc-2.95
     (outputs '("out"))
     (arguments
      (let ((matching-system
-             (match (%current-system)
-               ;; This package predates our 64-bit architectures.
-               ;; Force a 32-bit build targeting a similar architecture.
-               ("aarch64-linux"
-                "armhf-linux")
-               ("x86_64-linux"
-                "i686-linux")
-               (_
-                (%current-system)))))
+            (match (%current-system)
+              ;; This package predates our 64-bit architectures.
+              ;; Force a 32-bit build targeting a similar architecture.
+              ("aarch64-linux"
+               "armhf-linux")
+              ("x86_64-linux"
+               "i686-linux")
+              (_
+               (%current-system)))))
        (list #:system matching-system
              #:configure-flags #~'("--disable-werror")
 
@@ -1050,8 +1052,8 @@ (define-public (make-libstdc++ gcc)
     (propagated-inputs '())
     (synopsis "GNU C++ standard library")))
 
-(define libstdc++
-  ;; Libstdc++ matching the default GCC.
+(define (current-libstdc++)
+  ;; Libstdc++ matching the CURRENT-GCC.
   (make-libstdc++ (current-gcc)))
 
 (define libstdc++-headers
@@ -1061,7 +1063,7 @@ (define libstdc++-headers
   ;; is right under include/c++ and not under
   ;; include/c++/x86_64-unknown-linux-gnu (aka. GPLUSPLUS_TOOL_INCLUDE_DIR).
   (package
-    (inherit libstdc++)
+    (inherit (current-libstdc++))
     (name "libstdc++-headers")
     (outputs '("out"))
     (build-system trivial-build-system)
@@ -1072,7 +1074,7 @@ (define libstdc++-headers
                    (mkdir (string-append out "/include"))
                    (symlink (string-append libstdc++ "/include")
                             (string-append out "/include/c++")))))
-    (inputs `(("libstdc++" ,libstdc++)))
+    (inputs `(("libstdc++" ,(current-libstdc++))))
     (synopsis "Headers of GNU libstdc++")))
 
 (define-public libstdc++-4.9
diff --git a/gnu/packages/make-bootstrap.scm b/gnu/packages/make-bootstrap.scm
index c6293b9a38..f4165178fe 100644
--- a/gnu/packages/make-bootstrap.scm
+++ b/gnu/packages/make-bootstrap.scm
@@ -124,8 +124,11 @@ (define (package-with-relocatable-glibc p)
     (glibc-for-bootstrap
      ;; `cross-libc' already returns a cross libc, so clear
      ;; %CURRENT-TARGET-SYSTEM.
-     (parameterize ((%current-target-system #f))
-       (cross-libc target))))
+     (let ((xgcc (cross-gcc target #:xgcc (current-gcc))))
+       (parameterize ((%current-target-system #f))
+         (cross-libc target #:xgcc xgcc
+                     #:xheaders (cross-kernel-headers
+                                 target #:xgcc xgcc))))))
 
   ;; Standard inputs with the above libc and corresponding GCC.
 
@@ -145,7 +148,10 @@ (define (package-with-relocatable-glibc p)
                       target
                       #:xbinutils (cross-binutils target)
                       #:libc (cross-bootstrap-libc target))))
-          `(("cross-gcc" ,(package
+          `(,@(%final-inputs)
+            ;; As versions for gcc and cross-gcc can differ, make sure to have
+            ;; cross-gcc behind gcc in CPLUS_INCLUDE_PATH.
+            ("cross-gcc" ,(package
                             (inherit xgcc)
                             (search-paths
                              ;; Ensure the cross libc headers appears on the
@@ -154,8 +160,7 @@ (define (package-with-relocatable-glibc p)
                                     (variable "CROSS_CPLUS_INCLUDE_PATH")
                                     (files '("include")))
                                    (package-search-paths (current-gcc))))))
-            ("cross-binutils" ,(cross-binutils target))
-            ,@(%final-inputs)))
+            ("cross-binutils" ,(cross-binutils target))))
         `(("libc" ,(glibc-for-bootstrap glibc))
           ("libc:static" ,(glibc-for-bootstrap glibc) "static")
           ("gcc" ,(gcc-for-bootstrap glibc))
@@ -395,10 +400,15 @@ (define %binutils-static
                        ((#:configure-flags flags _ ...)
                         flags)))
            #:make-flags
-           (match (memq #:make-flags (package-arguments binutils))
-             ((#:make-flags flags _ ...)
-              flags)
-             (_ #~'()))
+           #~(append
+              #$(if (target-hurd64?)
+                    #~'("lt_cv_prog_compiler_static_works=yes"
+                        "lt_cv_prog_compiler_static_works_CXX=yes")
+                    #~'())
+              #$(match (memq #:make-flags (package-arguments binutils))
+                  ((#:make-flags flags _ ...)
+                   flags)
+                  (_ #~'())))
            #:strip-flags #~'("--strip-all")
            #:phases
            #~(modify-phases %standard-phases
@@ -446,7 +456,8 @@ (define (%glibc-stripped)
   ;; GNU libc's essential shared libraries, dynamic linker, and headers,
   ;; with all references to store directories stripped.  As a result,
   ;; libc.so is unusable and need to be patched for proper relocation.
-  (let ((glibc (glibc-for-bootstrap glibc)))
+  (let ((glibc (glibc-for-bootstrap glibc))
+        (gcc (current-gcc)))
     (package (inherit glibc)
       (name "glibc-stripped")
       (build-system trivial-build-system)
@@ -463,8 +474,13 @@ (define (%glibc-stripped)
        `(("libc" ,(let ((target (%current-target-system)))
                     (if target
                         (glibc-for-bootstrap
-                         (parameterize ((%current-target-system #f))
-                           (cross-libc target)))
+                         (let* ((xgcc (cross-gcc target #:xgcc gcc))
+                                (xheaders (cross-kernel-headers target
+                                                                #:xgcc xgcc)))
+                           (parameterize ((%current-target-system #f))
+                             (cross-libc target
+                                         #:xgcc xgcc
+                                         #:xheaders xheaders))))
                         glibc)))))
       (inputs
        `(("kernel-headers"
@@ -478,11 +494,12 @@ (define (%glibc-stripped)
       ;; Only one output.
       (outputs '("out")))))
 
-(define %gcc-static
+(define (%gcc-static)
   ;; A statically-linked GCC, with stripped-down functionality.
   (package-with-relocatable-glibc
    (package (inherit (current-gcc))
      (name "gcc-static")
+     (source (package-source (current-gcc)))
      (outputs '("out"))                           ; all in one
      (arguments
       (substitute-keyword-arguments (package-arguments (current-gcc))
@@ -552,7 +569,7 @@ (define %gcc-static
             ,@(package-native-inputs (current-gcc)))
           (package-native-inputs (current-gcc)))))))
 
-(define %gcc-stripped
+(define (%gcc-stripped)
   ;; The subset of GCC files needed for bootstrap.
   (package
     (inherit (current-gcc))
@@ -575,7 +592,7 @@ (define %gcc-stripped
                       (libdir     (string-append out "/lib"))
                       (includedir (string-append out "/include"))
                       (libexecdir (string-append out "/libexec"))
-                      (gcc        #$%gcc-static))
+                      (gcc        #$(%gcc-static)))
                  (copy-recursively (string-append gcc "/bin") bindir)
                  (for-each remove-store-references
                            (find-files bindir ".*"))
@@ -642,6 +659,9 @@ (define* (make-guile-static guile patches)
 
                   #$@(if (target-hurd?)
                          #~("--disable-jit")
+                         #~())
+                  #$@(if (target-hurd64?)
+                         #~("lt_cv_prog_compiler_static_works=yes")
                          #~())))
          ((#:phases phases '%standard-phases)
           #~(modify-phases #$phases
@@ -813,9 +833,9 @@ (define (%glibc-bootstrap-tarball)
   ;; A tarball with GNU libc's shared libraries, dynamic linker, and headers.
   (tarball-package (%glibc-stripped)))
 
-(define %gcc-bootstrap-tarball
+(define (%gcc-bootstrap-tarball)
   ;; A tarball with a dynamic-linked GCC and its headers.
-  (tarball-package %gcc-stripped))
+  (tarball-package (%gcc-stripped)))
 
 (define %guile-bootstrap-tarball
   ;; A tarball with the statically-linked, relocatable Guile.
@@ -856,7 +876,7 @@ (define %bootstrap-tarballs
            ((or "i686-linux" "x86_64-linux")
             (list %linux-libre-headers-bootstrap-tarball))
            (_
-            (list %gcc-bootstrap-tarball
+            (list (%gcc-bootstrap-tarball)
                   %binutils-bootstrap-tarball
                   (%glibc-bootstrap-tarball)
                   %bootstrap-binaries-tarball)))))
diff --git a/guix/platforms/x86.scm b/guix/platforms/x86.scm
index 0c8fc7296c..5617e6dd68 100644
--- a/guix/platforms/x86.scm
+++ b/guix/platforms/x86.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2022 Mathieu Othacehe <othacehe@gnu.org>
 ;;; Copyright © 2023, 2024 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2024 Janneke Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,7 +26,8 @@ (define-module (guix platforms x86)
             x86_64-linux-x32
             i686-mingw
             x86_64-mingw
-            i586-gnu))
+            i586-gnu
+            x86_64-gnu))
 
 (define i686-linux
   (platform
@@ -71,3 +73,10 @@ (define i586-gnu
    (system "i586-gnu")
    (rust-target "i686-unknown-hurd-gnu")
    (glibc-dynamic-linker "/lib/ld.so.1")))
+
+(define x86_64-gnu
+  (platform
+   (target "x86_64-pc-gnu")
+   (system "x86_64-gnu")
+   (rust-target "x86_64-unknown-hurd-gnu")
+   (glibc-dynamic-linker "/lib/ld-x86-64.so.1")))
diff --git a/guix/utils.scm b/guix/utils.scm
index f161cb4ef3..e100c03365 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -17,7 +17,7 @@
 ;;; Copyright © 2022 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
 ;;; Copyright © 2022 Antero Mejr <antero@mailbox.org>
 ;;; Copyright © 2023 Philip McGrath <philip@philipmcgrath.com>
-;;; Copyright © 2023 Janneke Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2023, 2024 Janneke Nieuwenhuizen <janneke@gnu.org>
 ;;; Copyright © 2023 Zheng Junjie <873216071@qq.com>
 ;;; Copyright © 2023 Foundation Devices, Inc. <hello@foundationdevices.com>
 ;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
@@ -94,6 +94,8 @@ (define-module (guix utils)
             target-linux?
             target-hurd?
             system-hurd?
+            target-hurd64?
+            system-hurd64?
             target-mingw?
             target-x86-32?
             target-x86-64?
@@ -716,6 +718,17 @@ (define* (system-hurd?)
   "Is the current system the GNU(/Hurd) system?"
   (and=> (%current-system) target-hurd?))
 
+(define* (target-hurd64? #:optional (target (or (%current-target-system)
+                                                (%current-system))))
+  "Does TARGET represent the 64bit GNU(/Hurd) system?"
+  (and (target-hurd?)
+       (target-64bit? target)))
+
+(define* (system-hurd64?)
+  "Is the current system the 64bit GNU(/Hurd) system?"
+  (and (system-hurd?)
+       (target-64bit? (%current-system))))
+
 (define* (target-mingw? #:optional (target (%current-target-system)))
   "Is the operating system of TARGET Windows?"
   (and target
-- 
Janneke Nieuwenhuizen <janneke@gnu.org>  | GNU LilyPond https://LilyPond.org
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