gnu: aptdec: Update to 1.7-1.5f91799.

* gnu/packages/radio.scm (aptdec): Update to 1.7-1.5f91799.
  [build-system]: Switch to cmake-build-system.
  [arguments]: Remove 'make-flags". Remove custom 'configure' and 'install'
  phases.

gnu/packages/radio.scm

@@ -246,42 +246,27 @@ memory contents between them.")
                    license:lgpl3+)))) ; chirp/elib_intl.py
 
 (define-public aptdec
+  ;; No release since 2013, use commit directly.
+  (let ((commit "5f91799637d93dfe7791caa7e9a6683050c4f8f3")
+        (revision "1"))
     (package
       (name "aptdec")
-    (version "1.7")
+      (version (git-version "1.7" revision commit))
       (source
        (origin
          (method git-fetch)
          (uri (git-reference
                (url "https://github.com/Xerbo/aptdec")
-             (commit (string-append "v" version))))
+               (commit commit)))
          (file-name (git-file-name name version))
          (sha256
-        (base32
-         "1hf0zb51qc6fyhdjxyij1n3vgwnw3cwksc3r11szbhkml14qjnzk"))))
-    (build-system gnu-build-system)
+          (base32 "0i7vkjjrq392gs9qaibr7j3v4hijqqg8458dn21dwh16ncrvr9bp"))))
+      (build-system cmake-build-system)
       (inputs
        `(("libpng" ,libpng)
          ("libsndfile" ,libsndfile)))
       (arguments
-     `(#:make-flags
-       (list
-        (string-append "CC="
-                       (if ,(%current-target-system)
-                           (string-append (assoc-ref %build-inputs "cross-gcc")
-                                          "/bin/" ,(%current-target-system) "-gcc")
-                           "gcc"))
-        (string-append "PREFIX=" %output)
-        (string-append "RPM_BUILD_ROOT=" %output))
-       #:tests? #f ; no tests
-       #:phases
-       (modify-phases %standard-phases
-         (delete 'configure)
-         (replace 'install
-           (lambda* (#:key outputs #:allow-other-keys)
-             (let ((out (assoc-ref outputs "out")))
-               (install-file "atpdec" (string-append out "/bin")))
-             #t)))))
+       `(#:tests? #f))  ; no tests
       (home-page "https://github.com/Xerbo/aptdec")
       (synopsis "NOAA Automatic Picture Transmission (APT) decoder")
       (description "Aptdec decodes Automatic Picture Transmission (APT) images.
@@ -289,7 +274,7 @@ These are medium resolution images of the Earth transmitted by, among other
 satellites, the POES NOAA weather satellite series.  These transmissions are
 on a frequency of 137 MHz.  They can be received using an inexpensive antenna
 and a dedicated receiver.")
-    (license license:gpl2+)))
+      (license license:gpl2+))))
 
 (define-public redsea
   (package