speexdsp: Add derivation

pkgs/development/libraries/speexdsp/build-fix.patch

···
+diff --git a/libspeexdsp/Makefile.am b/libspeexdsp/Makefile.am
+index d0499b9..42e8d50 100644
+--- a/libspeexdsp/Makefile.am
++++ b/libspeexdsp/Makefile.am
+@@ -29,7 +29,7 @@ noinst_HEADERS = 	arch.h 	bfin.h \
+ 	pseudofloat.h smallft.h vorbis_psy.h resample_sse.h resample_neon.h
+ 
+ libspeexdsp_la_LDFLAGS = -no-undefined -version-info @SPEEXDSP_LT_CURRENT@:@SPEEXDSP_LT_REVISION@:@SPEEXDSP_LT_AGE@
+-libspeexdsp_la_LIBADD = $(LIBM)
++libspeexdsp_la_LIBADD = @FFT_LIBS@ $(LIBM)
+ 
+ if BUILD_EXAMPLES
+ noinst_PROGRAMS = testdenoise testecho testjitter testresample
+diff --git a/speexdsp.pc.in b/speexdsp.pc.in
+index 6c6d26f..d40d856 100644
+--- a/speexdsp.pc.in
++++ b/speexdsp.pc.in
+@@ -11,5 +11,5 @@ Version: @PACKAGE_VERSION@
+ Requires: @FFT_PKGCONFIG@
+ Conflicts:
+ Libs: -L${libdir} -lspeexdsp
+-Libs.private: @LIBM@
++Libs.private: @FFT_LIBS@ @LIBM@
+ Cflags: -I${includedir}

pkgs/development/libraries/speexdsp/default.nix

···
+{ stdenv, fetchurl, autoreconfHook, pkgconfig, fftw }:
+
+stdenv.mkDerivation rec {
+  name = "speexdsp-1.2rc3";
+  
+  src = fetchurl {
+    url = "http://downloads.us.xiph.org/releases/speex/${name}.tar.gz";
+    sha256 = "1wcjyrnwlkayb20zdhp48y260rfyzg925qpjpljd5x9r01h8irja";
+  };
+
+  patches = [ ./build-fix.patch ];
+  
+  nativeBuildInputs = [ autoreconfHook pkgconfig ];
+  buildInputs = [ fftw ];
+
+  configureFlags = [
+    "--with-fft=gpl-fftw3"
+  ];
+
+  meta = with stdenv.lib; {
+    hompage = http://www.speex.org/;
+    description = "an Open Source/Free Software patent-free audio compression format designed for speech";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ wkennington ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   speex = callPackage ../development/libraries/speex { };
 
+  speexdsp = callPackage ../development/libraries/speexdsp {
+    fftw = fftwFloat;
+  };
+
   sphinxbase = callPackage ../development/libraries/sphinxbase { };
 
   sphinxsearch = callPackage ../servers/search/sphinxsearch { };