[bug#38842] [PATCH v2 3/3] gnu: Add redsea.

[Evan Straw]

This revision should address the issues with the patch for adding
Redsea.

Thanks for pointing these out.

--Evan

From ada62b2a6497b557bb5ca3e27c72f1a16d8b401a Mon Sep 17 00:00:00 2001
From: Evan Straw <address@hidden>
Date: Tue, 31 Dec 2019 19:04:37 -0800
Subject: [PATCH 3/3] gnu: Add redsea.

* gnu/packages/ham-radio.scm (redsea): New variable.
---
 gnu/packages/ham-radio.scm | 45 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/gnu/packages/ham-radio.scm b/gnu/packages/ham-radio.scm
index bd6badd0f7..3aa89cd84c 100644
--- a/gnu/packages/ham-radio.scm
+++ b/gnu/packages/ham-radio.scm
@@ -156,3 +156,48 @@ including filters, filter design, oscillators, modems, 
synchronizers, complex
 mathematical operations, and much more.")
     (license license:expat)))
 
+(define-public redsea
+  (package
+    (name "redsea")
+    (version "0.18")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/windytan/redsea";)
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1y96g0ra2krjb2kypm8s5gdfia45yci4f36klsvyzg8d53v5cwhn"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         ;; The configure.ac file does not explicitly link against libiconv
+         ;; except on Mac OS, causing the build to fail. This phase comments
+         ;; out the original AC_SUBST macro (located inside a conditional) and
+         ;; adds an explicit use of it underneath, so that libiconv is always
+         ;; linked against.
+         (add-after 'unpack 'patch-libiconv
+           (lambda _
+             (substitute* "configure.ac"
+               (("^ +AC_SUBST")
+                "# AC_SUBST")
+               (("esac")
+                "esac\nAC_SUBST([ICONV], [\"-liconv\"])"))
+             #t)))))
+    (inputs
+     `(("libiconv" ,libiconv)
+       ("libsndfile" ,libsndfile)
+       ("liquid-dsp" ,liquid-dsp)))
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)))
+    (home-page "https://github.com/windytan/redsea";)
+    (synopsis "Lightweight RDS to JSON decoder")
+    (description "redsea is a lightweight command-line @dfn{FM Radio Data
+System} (FM-RDS) decoder.  Redsea can be used with any RTL-SDR USB radio stick
+with the rtl_fm tool, or any other @dfn{software-defined radio} (SDR) via
+csdr, for example.  It can also decode raw ASCII bitstream, the hex format
+used by RDS Spy, and audio files containing @dfn{multiplex} signals (MPX).")
+    (license license:expat)))
-- 
2.20.1

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