[PATCH 2/2] gnu: Add espeak.

[Leo Famulari]

* gnu/packages/audio.scm (espeak): New variable.
---
 gnu/packages/audio.scm | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 111a82d..2f679b7 100644
--- a/gnu/packages/audio.scm
+++ b/gnu/packages/audio.scm
@@ -2057,3 +2057,55 @@ Sonic can also be used by the sighted.  For example, 
Sonic can improve the
 experience of listening to an audio book on an Android phone.")
     (home-page "https://github.com/waywardgeek/sonic";)
     (license license:asl2.0)))
+
+(define-public espeak
+  (package
+    (name "espeak")
+    (version "1.48.04")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://sourceforge/project/espeak/espeak"
+                                 "/espeak-" (version-major+minor version)
+                                 "/espeak-" version "-source.zip"))
+             (sha256
+              (base32
+               "0n86gwh9pw0jqqpdz7mxggllfr8k0r7pc67ayy7w5z6z79kig6mz"))))
+    (build-system gnu-build-system)
+    (arguments
+      `(#:tests? #f ; no test suite
+        #:make-flags (let ((out (assoc-ref %outputs "out")))
+                       (list "--directory=src"
+                             ;; 'runtime' uses PulseAudio if it is running, 
else
+                             ;; it uses PortAudio.
+                             "AUDIO=runtime"
+                             ;; Add the 'lib' dir to the RUNPATH of the
+                             ;; binaries.
+                             (string-append "LDFLAGS=-Wl,-rpath=" out "/lib")
+                             (string-append "DATADIR=" out 
"/share/espeak-data")
+                             (string-append "PREFIX=" out)))
+        #:phases (modify-phases %standard-phases
+                   (add-after 'unpack 'patch-makefile
+                     (lambda _
+                       (substitute* "src/Makefile"
+                         (("LN_SF = /bin/ln -sf") "LN_SF = ln -sf"))))
+                    ;; The program supports portaudio versions 18 and 19. We
+                    ;; package 19, so we select it here.
+                   (add-after 'unpack 'pick-portaudio-version
+                     (lambda _
+                       (copy-file "src/portaudio19.h" "src/portaudio.h")))
+                   (delete 'configure))))
+    (native-inputs
+     `(("unzip" ,unzip)))
+    (inputs
+      `(("sonic" ,sonic)
+        ("pulseaudio" ,pulseaudio)
+        ("portaudio" ,portaudio)))
+    (synopsis "Software speech synthesizer")
+    (description "eSpeak is a compact software speech synthesizer for
+English and other languages, for Linux and Windows.  eSpeak uses a
+formant synthesis method.  This allows many languages to be provided in
+a small size.  The speech is clear, and can be used at high speeds, but
+is not as natural or smooth as larger synthesizers which are based on
+human speech recordings.")
+    (home-page "http://espeak.sourceforge.net/";)
+    (license license:gpl3+)))
-- 
2.6.4