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: Mathieu Othacehe <m.othacehe <at> gmail.com>
Subject: [bug#36477] [PATCH v4 02/23] gnu: cmake: Fix cross-compilation.
Date: Wed,  2 Oct 2019 11:58:43 +0200

* gnu/packages/cmake.scm (cmake-minimal-cross): New package.
* guix/build-system/cmake.scm (default-cmake): Add new target argument and use
it to select cmake-minimal or cmake-minimal-cross.
(lower): Pass target to default-cmake.
---
 gnu/packages/cmake.scm      | 8 ++++++++
 guix/build-system/cmake.scm | 9 ++++++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/gnu/packages/cmake.scm b/gnu/packages/cmake.scm
index 64349be444..13252a9486 100644
--- a/gnu/packages/cmake.scm
+++ b/gnu/packages/cmake.scm
@@ -219,6 +219,14 @@ and workspaces that can be used in the compiler environment of your choice.")
                (append (search-patches "cmake-curl-certificates.patch")
                        (origin-patches (package-source cmake))))))))
 
+(define-public cmake-minimal-cross
+  (package
+    (inherit cmake-minimal)
+    (name "cmake-minimal-cross")
+    (native-search-paths '())
+    (search-paths
+     (package-native-search-paths cmake-minimal))))
+
 (define-public emacs-cmake-mode
   (package
     (inherit cmake)
diff --git a/guix/build-system/cmake.scm b/guix/build-system/cmake.scm
index ca88fadddf..aa0f4187ec 100644
--- a/guix/build-system/cmake.scm
+++ b/guix/build-system/cmake.scm
@@ -43,16 +43,19 @@
   `((guix build cmake-build-system)
     ,@%gnu-build-system-modules))
 
-(define (default-cmake)
+(define (default-cmake target)
   "Return the default CMake package."
 
   ;; Do not use `@' to avoid introducing circular dependencies.
   (let ((module (resolve-interface '(gnu packages cmake))))
-    (module-ref module 'cmake-minimal)))
+    (module-ref module
+                (if target
+                    'cmake-minimal-cross
+                    'cmake-minimal))))
 
 (define* (lower name
                 #:key source inputs native-inputs outputs system target
-                (cmake (default-cmake))
+                (cmake (default-cmake target))
                 #:allow-other-keys
                 #:rest arguments)
   "Return a bag for NAME."
-- 
2.23.0

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