GNU bug report logs - #36477
Add Guix System cross-compilation support

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From: Mathieu Othacehe <m.othacehe <at> gmail.com>
To: 36477 <at> debbugs.gnu.org
Cc: mbakke <at> fastmail.com, Mathieu Othacehe <m.othacehe <at> gmail.com>, ludo <at> gnu.org
Subject: [bug#36477] [PATCH v2 03/61] gnu: tcl: Fix cross-compilation.
Date: Wed, 21 Aug 2019 10:53:57 +0200

* gnu/packages/tcl.scm (tcl)[arguments]: Add configure flags to fix
cross-compilation.
---
 gnu/packages/tcl.scm | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/gnu/packages/tcl.scm b/gnu/packages/tcl.scm
index 21ca185066..96f41e7928 100644
--- a/gnu/packages/tcl.scm
+++ b/gnu/packages/tcl.scm
@@ -53,7 +53,7 @@
                 "0kjzj7mkzfnb7ksxanbibibfpciyvsh5ffdlhs0bmfc75kgd435d"))))
     (build-system gnu-build-system)
     (arguments
-     '(#:phases (modify-phases %standard-phases
+     `(#:phases (modify-phases %standard-phases
                   (add-before 'configure 'pre-configure
                     (lambda _ (chdir "unix") #t))
                  (add-after 'install 'install-private-headers
@@ -73,9 +73,16 @@
        ;; PREFIX/share/man.  The 'validate-documentation-location' phase is
        ;; not able to fix this up because the default install populates both
        ;; PREFIX/man and PREFIX/share/man.
-       #:configure-flags (list (string-append "--mandir="
-                                              (assoc-ref %outputs "out")
-                                              "/share/man"))
+       #:configure-flags
+       (list (string-append "--mandir="
+                            (assoc-ref %outputs "out")
+                            "/share/man")
+             ;; This is needed when cross-compiling, see:
+             ;; https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719247
+             ,@(if (%current-target-system)
+                   '("tcl_cv_strtod_buggy=1"
+                     "ac_cv_func_strtod=yes")
+                   '()))
 
        ;; XXX: There are a few test failures (related to HTTP, most
        ;; likely related to name resolution), but that doesn't cause
-- 
2.17.1

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