gnu: Add basic support for x86_64-pc-gnu target, aka 64bit Hurd.

* 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.
* gnu/packages/cross-base.scm (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)
[native-inputs]: Move final-inputs before cross-packages.
(%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.
(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.
* guix/platforms/x86.scm (x86_64-gnu): New exported variable.
* guix/utils.scm (target-hurd64? system-hurd64?): New procedures.

1 files changed, 3 insertions, 3 deletions

diff --git a/gnu/packages/cross-base.scm b/gnu/packages/cross-base.scm
index 5781341a878..83672ab383e 100644
--- a/gnu/packages/cross-base.scm
+++ b/gnu/packages/cross-base.scm
@@ -641,9 +641,9 @@ the base compiler.  Use XBINUTILS as the associated cross-Binutils."
                 ("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))