- Add in code to look for portaudio v19 beta as a subdir, if found

compile it if necessary and use the libs from it instead of the system
  library. v19 has a different ABI than portaudio normally installed
  on unix systems. 
  I have come across at least one other program that includes a copy
  of portaudio v19 with it's release package due to this problem.
 


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@184 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

WSJT_Source_Code.txt

@@ -268,7 +268,7 @@ can now be compiled in Windows as follows:
 
 In Linux or FreeBSD, do the following:
 
-  $ ./configure --enable-portaudio (or --enable-alsa)
+  $ ./configure --enable-portaudio (or --enable-alsa or --enable-oss)
   $ make
 
 

configure.ac

@@ -21,7 +21,7 @@ dnl Make sure autoconf doesn't interfere with cflags -jmallett
 CFLAGS="$OLD_CFLAGS"
 
 dnl Lets guess at some likely places for extra libs/includes XXX -db
-CPPFLAGS="-I/usr/local/include -I/usr/include/alsa ${CPPFLAGS}"
+CPPFLAGS="-Iportaudio/pa_common -I/usr/local/include -I/usr/include/alsa ${CPPFLAGS}"
 LDFLAGS="-L/usr/local/lib -lpthread ${LDFLAGS}"
 
 AC_MSG_CHECKING([uname -s for Cygwin, Solaris or HPUX])
@@ -111,7 +111,13 @@ AC_HEADER_TIME
 AC_CHECK_HEADER([sys/soundcard.h], [HAS_SOUNDCARD_H=1], [HAS_SOUNDCARD_H=0])
 AC_CHECK_HEADER([alsa/asoundlib.h], [HAS_ASOUNDLIB_H=1], [HAS_ASOUNDLIB_H=0])
 AC_CHECK_HEADER([jack/jack.h], [HAS_JACK_H=1], [HAS_JACK_H=0])
-AC_CHECK_HEADER([portaudio.h], [HAS_PORTAUDIO_H=1], [HAS_PORTAUDIO_H=0])
+if test -e "./portaudio/pa_common/portaudio.h" ; then
+	echo "Checking for portaudio...yes"
+	HAS_PORTAUDIO_H=1
+else
+	echo "Checking for portaudio...no"
+	HAS_SAMPLERATE_H=0
+fi
 AC_CHECK_HEADER([samplerate.h], [HAS_SAMPLERATE_H=1], [HAS_SAMPLERATE_H=0])
 
 dnl See whether we can include both string.h and strings.h.
@@ -331,7 +337,11 @@ fi
 if test "$portaudio" = yes; then
 	AC_DEFINE(USE_PORTAUDIO, 1, [Define if you want PORTAUDIO used.])
 	AC_SUBST(AUDIO, "a2d.f90 jtaudio.c start_portaudio.c")
-	LDFLAGS="${LDFLAGS} -lportaudio -lsamplerate" 
+	if test ! -e "portaudio/lib/libportaudio.a" ; then
+		echo "Building portaudio"
+		(cd portaudio; ./configure --with-jack=no;make)
+	fi
+	LDFLAGS="./portaudio/lib/libportaudio.a ${LDFLAGS} -lsamplerate" 
 fi
 
 if test "$jack" = yes; then