gnu: m2-planet: Update to 1.8.0.

* gnu/packages/mes.scm (m2-planet): Update to 1.8.0.

gnu/packages/mes.scm

@@ -360,25 +360,24 @@ get_machine.")
                #t))))))))
 
 (define-public m2-planet
-  (let ((commit "b87ddb0051b168ea45f8d49a610dcd069263336a")
-        (revision "2"))
   (package
     (name "m2-planet")
-      (version (string-append "1.4.0-" revision "." (string-take commit 7)))
+    (version "1.8.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://github.com/oriansj/m2-planet")
-                      (commit commit)))
+                    (commit (string-append "Release_" version))
+                    (recursive? #t)))             ;for M2libc
               (file-name (git-file-name name version))
               (sha256
                (base32
-                  "0yyc0fcbbxi9jqa1n76x0rwspdrwmc8g09jlmsw9c35nflrhmz8q"))))
-      (native-inputs
-       (list mescc-tools))
+                "0525fhijrjljgaabmgsjy8yk2pmh5zf8lwa44wpvkjc18knl7nza"))))
+    (native-inputs (list mescc-tools))
     (build-system gnu-build-system)
     (arguments
-       `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
+     `(#:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
+                          ,(string-append "CC=" (cc-for-target)))
        #:tests? #f
        #:phases (modify-phases %standard-phases
                   (delete 'bootstrap)
@@ -392,4 +391,4 @@ also has an implementation in the M1 macro assembly language.  M2-Planet is
 built as Phase-5 of the full source bootstrapping process and is capable of
 building GNU Mes.")
     (home-page "https://github.com/oriansj/m2-planet")
-      (license gpl3+))))
+    (license gpl3+)))