GNU bug report logs - #74290
[PATCH 00/31] Add support for x86_64-gnu, aka the 64bit Hurd.

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From: Janneke Nieuwenhuizen <janneke <at> gnu.org>
To: 74290 <at> debbugs.gnu.org
Cc: Andreas Enge <andreas <at> enge.fr>, Ludovic Courtès <ludo <at> gnu.org>
Subject: [bug#74290] [PATCH 12/31] gnu: libstdc++: Support the 64bit Hurd.
Date: Sun, 10 Nov 2024 11:38:08 +0100

* gnu/packages/gcc.scm (make-libstdc++)[arguments]: When building for the
64bit Hurd, add stage patch-hurd64.

Change-Id: I795a591ef8282ee5b760fec43bd4ad849007f602
---
 gnu/packages/gcc.scm | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index fc3746fb05..850a14cb1c 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -1033,7 +1033,15 @@ (define-public (make-libstdc++ gcc)
                   (("/lib64") "/lib")))))
           (add-before 'configure 'chdir
             (lambda _
-              (chdir "libstdc++-v3"))))
+              (chdir "libstdc++-v3")))
+          #$@(let ((version (package-version gcc)))
+               (if (target-hurd64?)
+                   #~((add-after 'unpack 'patch-hurd64
+                        (lambda _
+                          (substitute* "libstdc++-v3/src/c++20/tzdb.cc"
+                            (("#if ! defined _GLIBCXX_ZONEINFO_DIR")
+                             "#if __GNU__ || ! defined _GLIBCXX_ZONEINFO_DIR")))))
+                   '())))
 
       #:configure-flags '`("--disable-libstdcxx-pch"
                            ,(string-append "--with-gxx-include-dir="
-- 
Janneke Nieuwenhuizen <janneke <at> gnu.org>  | GNU LilyPond https://LilyPond.org
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