README.osx

README.osx
David Witten 29 Dec 2012
==========================

Received today:

Mooneer Salem 
Re: [digitalvoice] Re: Mac build for fdmdv2

Yep. I'm attaching a patch to this email with the modifications I had to make to get FreeDV to build on OSX. I develop on 10.8.2, but it should work with 10.5-10.7 I think. Unfortunately it's 32-bit only due to a dependency on Carbon, which Apple deprecated.

Directions (requires MacPorts to build dependencies):

1. Apply patch.
2. $ sudo port install wxWidgets30 +aui +universal portaudio +universal sox +universal libsndfile +universal libsamplerate +universal
3. $ cd src && make -f Makefile.osx

This will create a folder named FreeDV.app in the src folder (shows up as a single file in Finder) that when double-clicked, starts the application. I'll probably need to figure out how to include dependencies in the .app folder so that people won't need to install MacPorts just to run FreeDV ;)

The patch also includes the change away from libctb. It compiles on POSIX compliant platforms, but I'm not sure about the Windows implementation due to not having a Windows development setup here at home.

...
-Mooneer KG6AOV

Mooneer's patch is included as /freedv_osx_port.patch.gz in the SVN checkout or just snip & run the following --
Patch:<cut here->

Index: src/Makefile.linux
===================================================================
--- src/Makefile.linux	(revision 1152)
+++ src/Makefile.linux	(working copy)
@@ -36,12 +36,6 @@
 SOX_INC=-I$(SOX)/src/
 SOX_LIB=$(SOX)/src/.libs/libsox.a
 
-# CTB ---------------------------------------------------
-
-CTB=libctb-0.16
-CTB_INC=-I$(CTB)/include
-CTB_LIB=$(CTB)/lib/libctb-0.16.a
-
 # if libasound is available, PortAudio will be using it, so we will
 # need to add it to freedv link line.  To test if it is present, we try
 # to link a small C program with -lasound
@@ -50,8 +44,8 @@
 
 # FreeDV ------------------------------------------------
 
-CPP_FLAGS = -D_NO_AUTOTOOLS_ $(WX_CPPFLAGS) $(PORTAUDIO_INC) $(CODEC2_INC) $(SOX_INC) $(CTB_INC) -I. -g -Wall -O3 -DSVN_REVISION=\"$(SVN_REVISION)\"
-FREEDV_LIBS = $(WX_LIBS) $(PORTAUDIO_LIB) $(CODEC2_LIB) $(SOX_LIB) $(CTB_LIB) -lm -lpthread -lsndfile -lsamplerate $(LIBASOUND)
+CPP_FLAGS = -D_NO_AUTOTOOLS_ $(WX_CPPFLAGS) $(PORTAUDIO_INC) $(CODEC2_INC) $(SOX_INC) -I. -g -Wall -O3 -DSVN_REVISION=\"$(SVN_REVISION)\"
+FREEDV_LIBS = $(WX_LIBS) $(PORTAUDIO_LIB) $(CODEC2_LIB) $(SOX_LIB) -lm -lpthread -lsndfile -lsamplerate $(LIBASOUND)
 
 OBJS = topFrame.o \
 fdmdv2_main.o \
@@ -65,11 +59,12 @@
 dlg_comports.o \
 dlg_filter.o \
 varicode.o \
-sox_biquad.o
+sox_biquad.o \
+serialport.o
 
-HDRS = ../version.h dlg_about.h dlg_audiooptions.h dlg_comports.h dlg_filter.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h varicode.h
+HDRS = ../version.h dlg_about.h dlg_audiooptions.h dlg_comports.h dlg_filter.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h varicode.h serialport.h
 
-all: $(WXWIDGETS)/.built $(PORTAUDIO)/.built $(CODEC2)/.built $(SOX)/.built $(CTB)/.built freedv
+all: $(WXWIDGETS)/.built $(PORTAUDIO)/.built $(CODEC2)/.built $(SOX)/.built freedv
 
 freedv: $(OBJS) 
 	g++ -o freedv $(OBJS) $(CPP_FLAGS) $(FREEDV_LIBS)
@@ -81,7 +76,7 @@
 	rm -f *.o fdmdv2 
 
 clean-lib:
-	rm -Rf $(WXWIDGETS) $(PORTAUDIO) $(CODEC2) $(SOX) $(CTB)  
+	rm -Rf $(WXWIDGETS) $(PORTAUDIO) $(CODEC2) $(SOX) 
 	rm -f *.o fdmdv2 
 
 # wxWidgets ---------------------------------------------------------
@@ -126,14 +121,3 @@
        
 $(SOX).tar.bz2:
 	wget http://downloads.sourceforge.net/project/sox/sox/14.4.0/sox-14.4.0.tar.bz2
-
-# CTB -------------------------------------------------------------
-
-$(CTB)/.built: $(CTB)
-	cd $(CTB)/build && make && touch ../.built
-               
-$(CTB) : $(CTB).tar.gz
-	tar xvzf $(CTB).tar.gz
-       
-$(CTB).tar.gz:
-	wget https://iftools.com/download/ctb/0.16/libctb-0.16.tar.gz
Index: src/Makefile.linux.dmw
===================================================================
--- src/Makefile.linux.dmw	(revision 1152)
+++ src/Makefile.linux.dmw	(working copy)
@@ -36,7 +36,8 @@
 dlg_comports.o \
 dlg_filter.o \
 varicode.o \
-sox_biquad.o
+sox_biquad.o \
+serialport.o
 
 
 all: fdmdv2
@@ -44,7 +45,7 @@
 fdmdv2: $(OBJS) fdmdv2_main.h
 	g++ -o fdmdv2 $(OBJS) $(CPP_FLAGS) $(LIBS)
 
-fdmdv2_main.h: ../version.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h dlg_about.h dlg_audiooptions.h dlg_comports.h dlg_options.h
+fdmdv2_main.h: ../version.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h dlg_about.h dlg_audiooptions.h dlg_comports.h dlg_options.h serialport.h
 
 %.o: %.cpp
 	g++ $(CPP_FLAGS) -c $< -o $@
Index: src/Makefile.osx
===================================================================
--- src/Makefile.osx	(revision 0)
+++ src/Makefile.osx	(working copy)
@@ -0,0 +1,76 @@
+# src/Makefile.osx
+# Mooneer Salem 28 Dec 2012
+#
+# Makefile for OSX - assumes MacPorts for some libraries and builds the others locally.
+# Note: dependencies must be installed with universal binary support due to the use of Carbon by portaudio and others.
+#       (Carbon is officially deprecated by Apple and does not have 64-bit support.)
+#
+# $ sudo port install wxWidgets30 +aui +universal portaudio +universal sox +universal libsndfile +universal libsamplerate +universal
+# $ make -f Makefile.osx
+
+SVN_REVISION=$(shell svnversion)
+MACPORTS_FOLDER=/opt/local
+
+# Codec 2 -----------------------------------------------
+
+CODEC2=codec2-dev
+CODEC2_INC=-I$(CODEC2)/src
+CODEC2_LIB=$(CODEC2)/src/.libs/libcodec2.a
+
+# FreeDV ------------------------------------------------
+
+CPP_FLAGS = -D_NO_AUTOTOOLS_ -I$(MACPORTS_FOLDER)/include -arch i386 `wx-config --cppflags` $(CODEC2_INC) -I. -g -Wall -O3 -DSVN_REVISION=\"$(SVN_REVISION)\"
+FREEDV_LIBS = -arch i386 -L$(MACPORTS_FOLDER)/lib `wx-config --libs all` -lportaudio $(CODEC2_LIB) -lm -lpthread -lsndfile -lsamplerate -lsox
+
+OBJS = topFrame.o \
+fdmdv2_main.o \
+fdmdv2_plot.o \
+fdmdv2_plot_scalar.o \
+fdmdv2_plot_scatter.o \
+fdmdv2_plot_spectrum.o \
+fdmdv2_plot_waterfall_linux.o \
+fdmdv2_pa_wrapper.o \
+dlg_audiooptions.o \
+dlg_comports.o \
+dlg_filter.o \
+varicode.o \
+sox_biquad.o \
+serialport.o
+
+HDRS = ../version.h dlg_about.h dlg_audiooptions.h dlg_comports.h dlg_filter.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h varicode.h serialport.h
+
+all: $(CODEC2)/.built freedv FreeDV.app
+
+freedv: $(OBJS)
+	g++ -o freedv $(OBJS) $(CPP_FLAGS) $(FREEDV_LIBS)
+
+FreeDV.app: info.plist freedv
+	-mkdir -p $@/Contents/MacOS
+	-mkdir -p $@/Contents/Resources/English.lproj
+	cp info.plist $@/Contents
+	echo -n "APPL????" > $@/Contents/PkgInfo
+	cp freedv $@/Contents/MacOS/FreeDV
+	
+%.o: %.cpp $(HDRS)
+	g++ $(CPP_FLAGS) -c $< -o $@
+
+sox_biquad.o: sox_biquad.c
+	gcc $(CPP_FLAGS) -c sox_biquad.c -o sox_biquad.o
+
+varicode.o: varicode.c
+	cc $(CPP_FLAGS) -c varicode.c -o varicode.o
+
+clean:
+	rm -f *.o fdmdv2 
+	rm -rf FreeDV.app/
+	
+clean-lib: clean
+	rm -Rf $(CODEC2)
+ 
+# Codec 2 ----------------------------------------------------------
+
+$(CODEC2)/.built: $(CODEC2)
+	cd $(CODEC2) && CPPFLAGS="-arch i386" LDFLAGS="-arch i386" ./configure && make && touch .built
+
+$(CODEC2):
+	svn co https://freetel.svn.sourceforge.net/svnroot/freetel/codec2-dev
\ No newline at end of file
Index: src/Makefile.win32
===================================================================
--- src/Makefile.win32	(revision 1152)
+++ src/Makefile.win32	(working copy)
@@ -16,7 +16,7 @@
 CODEC2_LIB=$(CODEC2_PATH)/src/.libs/libcodec2.a
 
 CPP_FLAGS = -D_NO_AUTOTOOLS_ -I$(INCLUDE_PATH) $(WX_CPPFLAGS) -I$(CODEC2_INC) -I../extern/include -g -Wall -DSVN_REVISION=\"$(SVN_REVISION)\"
-LIBS = $(WX_LIBS) $(CODEC2_LIB) -lm -lportaudiocpp -lportaudio -lpthread -lsndfile -lsamplerate -lctb-0.16 -lsox
+LIBS = $(WX_LIBS) $(CODEC2_LIB) -lm -lportaudiocpp -lportaudio -lpthread -lsndfile -lsamplerate -lsox
 
 OBJS = topFrame.o \
 fdmdv2_main.o \
@@ -30,9 +30,10 @@
 dlg_comports.o \
 dlg_filter.o \
 varicode.o \
-sox_biquad.o
+sox_biquad.o \
+serialport.o
 
-HDRS = ../version.h dlg_audiooptions.h dlg_comports.h dlg_filter.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h dlg_audiooptions.h topFrame.h varicode.h
+HDRS = ../version.h dlg_audiooptions.h dlg_comports.h dlg_filter.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h dlg_audiooptions.h topFrame.h varicode.h serialport.h
 
 all: freedv
 
Index: src/Makefile.win32.dmw
===================================================================
--- src/Makefile.win32.dmw	(revision 1152)
+++ src/Makefile.win32.dmw	(working copy)
@@ -40,10 +40,11 @@
 dlg_comports.o \
 dlg_filter.o \
 varicode.o \
-sox_biquad.o
+sox_biquad.o \
+serialport.o
 
 
-HDRS = ../version.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h dlg_audiooptions.h
+HDRS = ../version.h fdmdv2_main.h fdmdv2_defines.h fdmdv2_plot.h fdmdv2_plot_scalar.h fdmdv2_plot_waterfall_linux.h fdmdv2_plot_scatter.h fdmdv2_plot_spectrum.h fdmdv2_pa_wrapper.h topFrame.h dlg_audiooptions.h serialport.h
 
 all: freedv
 
Index: src/dlg_comports.cpp
===================================================================
--- src/dlg_comports.cpp	(revision 1152)
+++ src/dlg_comports.cpp	(working copy)
@@ -21,7 +21,6 @@
 //==========================================================================
 #include "dlg_comports.h"
 #include "fdmdv2_main.h"
-#include <wx/msw/registry.h>
 #include <sstream>
 
 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=
@@ -62,8 +61,9 @@
     wxArrayString m_listCtrlPortsArr;
     m_listCtrlPorts = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxSize(-1,45), m_listCtrlPortsArr, wxLB_SINGLE | wxLB_SORT);
     staticBoxSizer31->Add(m_listCtrlPorts, 1, wxALIGN_CENTER, 0);
-#endif
-#ifdef __WXGTK__
+#else
+/*#endif
+#ifdef __WXGTK__*/
     wxBoxSizer* bSizer83;
     bSizer83 = new wxBoxSizer(wxHORIZONTAL);
 
Index: src/fdmdv2_main.cpp
===================================================================
--- src/fdmdv2_main.cpp	(revision 1152)
+++ src/fdmdv2_main.cpp	(working copy)
@@ -163,7 +163,6 @@
 {
     m_zoom              = 1.;
     m_serialPort        = NULL;
-    m_device            = NULL;
     
     tools->AppendSeparator();
     wxMenuItem* m_menuItemToolsConfigDelete;
@@ -857,22 +856,22 @@
             {
                 if(wxGetApp().m_boolRTSPos) // RTS asserted HIGH
                 {
-                    m_serialPort->SetLineState(ctb::LinestateRts);
+                    m_serialPort->setRTS(true);
                 }
                 else                        // RTS asserted LOW
                 {
-                    m_serialPort->ClrLineState(ctb::LinestateRts);
+                    m_serialPort->setRTS(false);
                 }
             }
             else                            // Use DTR
             {
                 if(wxGetApp().m_boolDTRPos) // DTR asserted HIGH
                 {
-                    m_serialPort->SetLineState(ctb::LinestateDtr);
+                    m_serialPort->setDTR(true);
                 }
                 else                        // DTR asserted LOW
                 {
-                    m_serialPort->ClrLineState(ctb::LinestateDtr);
+                    m_serialPort->setDTR(false);
                 }
             }
         } 
@@ -882,22 +881,22 @@
             {
                 if(wxGetApp().m_boolRTSPos) // RTS cleared LOW
                 {
-                    m_serialPort->ClrLineState(ctb::LinestateRts);
+                    m_serialPort->setRTS(false);
                 }
                 else                        // RTS cleared HIGH
                 {
-                    m_serialPort->SetLineState(ctb::LinestateRts);
+                    m_serialPort->setRTS(true);
                 }
             }
             else                            // Use DTR
             {
                 if(wxGetApp().m_boolDTRPos) // DTR cleared LOW
                 {
-                    m_serialPort->ClrLineState(ctb::LinestateDtr);
+                    m_serialPort->setDTR(false);
                 }
                 else                        // DTR cleared HIGH
                 {
-                    m_serialPort->SetLineState(ctb::LinestateDtr);
+                    m_serialPort->setDTR(true);
                 }
             }
         } 
@@ -1351,13 +1350,15 @@
 {
     wxUnusedVar(event);
     int rv = 0;
-    int  iLineState  = 0;
+    bool rtsEnabled = false;
+    bool dtrEnabled = false;
     //bool bPTTEnabled = m_btnTogPTT->IsEnabled();
     //bool bPTTState   = m_btnTogPTT->GetValue();
 
     if(m_serialPort != NULL)
     {
-        int iLineState   = m_serialPort->GetLineState();
+        rtsEnabled = m_serialPort->getRTS();
+        dtrEnabled = m_serialPort->getDTR();
         CloseSerialPort();
     }
     ComPortsDlg *dlg = new ComPortsDlg(NULL);
@@ -1372,21 +1373,21 @@
         SetupSerialPort();
         if(m_serialPort != NULL)
         {
-            if(iLineState | ctb::LinestateRts)
+            if(rtsEnabled)
             {
-                m_serialPort->SetLineState(ctb::LinestateRts);
+                m_serialPort->setRTS(true);
             }
             else
             {
-                m_serialPort->ClrLineState(ctb::LinestateRts);
+                m_serialPort->setRTS(false);
             }
-            if(iLineState | ctb::LinestateDtr)
+            if(dtrEnabled)
             {
-                m_serialPort->SetLineState(ctb::LinestateDtr);
+                m_serialPort->setDTR(true);
             }
             else
             {
-                m_serialPort->ClrLineState(ctb::LinestateDtr);
+                m_serialPort->setDTR(false);
             }
         // m_btnTogPTT->Enable(bPTTEnabled);
         // m_btnTogPTT->SetValue(bPTTState);
@@ -2631,26 +2632,25 @@
     if(!wxGetApp().m_strRigCtrlPort.IsEmpty())
     {
         wxString protocol = wxGetApp().m_strRigCtrlDatabits + wxGetApp().m_strRigCtrlParity + wxGetApp().m_strRigCtrlStopbits;
-        m_serialPort = new ctb::SerialPort();
-        if(m_serialPort->Open(wxGetApp().m_strRigCtrlPort.c_str(), baudrate, protocol.c_str(), ctb::SerialPort::NoFlowControl ) >= 0 ) 
+        m_serialPort = new SerialPort(wxGetApp().m_strRigCtrlPort.ToAscii().data());
+        if(m_serialPort->open(/*baudrate, protocol.c_str()*/ ) >= 0 ) 
         {
-            m_device = m_serialPort;
             //  always start with PTT cleared
             if(wxGetApp().m_boolRTSPos) // RTS cleared LOW
             {
-                m_serialPort->ClrLineState(ctb::LinestateRts);
+                m_serialPort->setRTS(false);
             }
             else                        // RTS cleared HIGH
             {
-                m_serialPort->SetLineState(ctb::LinestateRts);
+                m_serialPort->setRTS(true);
             }
             if(wxGetApp().m_boolDTRPos) // DTR cleared LOW
             {
-                m_serialPort->ClrLineState(ctb::LinestateDtr);
+                m_serialPort->setDTR(false);
             }
             else                        // DTR cleared HIGH
             {
-                m_serialPort->SetLineState(ctb::LinestateDtr);
+                m_serialPort->setDTR(true);
             }
             //m_btnTogPTT->Enable(true);
             m_btnTogPTT->SetValue(false);
@@ -2658,7 +2658,6 @@
         else
         {
             m_serialPort = NULL;
-            m_device     = NULL;
             //m_btnTogPTT->Disable();
         }
     }
@@ -2675,11 +2674,10 @@
 //----------------------------------------------------------------
 void MainFrame::CloseSerialPort(void)
 {
-    if((m_serialPort != NULL) && m_serialPort->IsOpen())
+    if((m_serialPort != NULL) && m_serialPort->isOpen())
     {
-        m_serialPort->Close();
+        m_serialPort->close();
         m_serialPort = NULL;
-        m_device     = NULL; 
         //m_btnTogPTT->SetLabel(wxT("PTT"));
         //m_btnTogPTT->Enable(false);
     }
Index: src/fdmdv2_main.h
===================================================================
--- src/fdmdv2_main.h	(revision 1152)
+++ src/fdmdv2_main.h	(working copy)
@@ -55,10 +55,7 @@
 #include "codec2_fdmdv.h"
 #include "codec2_fifo.h"
 
-#include "ctb-0.16/ctb.h"
-#include "ctb-0.16/portscan.h"
-#include "ctb-0.16/serportx.h"
-#include "ctb-0.16/serport.h"
+#include "serialport.h"
 
 #include "topFrame.h"
 #include "dlg_comports.h"
@@ -353,8 +350,7 @@
 
     protected:
 
-        ctb::IOBase*            m_device;
-        ctb::SerialPort*        m_serialPort;
+        SerialPort*             m_serialPort;
 
         void setsnrBeta(bool snrSlow);
 
Index: src/info.plist
===================================================================
--- src/info.plist	(revision 0)
+++ src/info.plist	(working copy)
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>freedv</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>org.freedv.freedv</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>FreeDV</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.5</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2012 FreeDV. All rights reserved.</string>
+	<!--<key>NSMainNibFile</key>
+	<string>MainMenu</string>-->
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>
\ No newline at end of file
Index: src/serialport.cpp
===================================================================
--- src/serialport.cpp	(revision 0)
+++ src/serialport.cpp	(working copy)
@@ -0,0 +1,207 @@
+//==========================================================================
+// Name:            serialport.cpp
+//
+// Purpose:         Serial port management.
+// Created:         Dec. 28, 2012
+// Authors:         Mooneer Salem
+// 
+// License:
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General License version 2.1,
+//  as published by the Free Software Foundation.  This program is
+//  distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+//  License for more details.
+//
+//  You should have received a copy of the GNU General License
+//  along with this program; if not, see <http://www.gnu.org/licenses/>.
+//
+//==========================================================================
+
+#ifndef WIN32
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#endif // !WIN32
+
+#include "serialport.h"
+
+#define ERROR_CONDITION (-1)
+#ifdef WIN32
+#define INVALID_FILE_DESCRIPTOR (INVALID_HANDLE_VALUE)
+#else
+#define INVALID_FILE_DESCRIPTOR (-1)
+#endif // WIN32
+
+SerialPort::SerialPort(const std::string &portName)
+    : _portName(portName)
+    , _fileDescriptor(INVALID_FILE_DESCRIPTOR)
+#ifdef WIN32
+    , _rtsEnabled(false)
+    , _dtrEnabled(false)
+#endif // WIN32
+{
+    // No action here until open() is called.
+}
+
+SerialPort::~SerialPort()
+{
+    // Close serial port if needed.
+    if (isOpen())
+    {
+        close();
+    }
+}
+
+#ifndef WIN32
+static int posixGetModemControlBits(const int fileDescriptor)
+{
+    int modemControlBits = 0;
+    
+    if (ioctl(fileDescriptor, TIOCMGET, &modemControlBits) == 0)
+    {
+        return modemControlBits;
+    }
+    else
+    {
+        return ERROR_CONDITION;
+    }
+}
+
+static int posixSetModemControlBits(const int fileDescriptor, int modemControlBits)
+{
+    if (ioctl(fileDescriptor, TIOCMSET, &modemControlBits) == 0)
+    {
+        return modemControlBits;
+    }
+    else
+    {
+        return ERROR_CONDITION;
+    }
+}
+#endif // !WIN32
+
+bool SerialPort::getRTS() const
+{
+#ifdef WIN32
+    // No way to get DTR/RTS directly from Windows, so we have to
+    // grab what the caller put in during a previous set*() call.
+    return _rtsEnabled;
+#else
+    int tmpbits = posixGetModemControlBits(_fileDescriptor);
+    if (tmpbits != ERROR_CONDITION)
+    {
+        return tmpbits & TIOCM_RTS;
+    }
+    else
+    {
+        return ERROR_CONDITION;
+    }
+#endif // WIN32
+}
+
+void SerialPort::setRTS(const bool newRTS)
+{
+#ifdef WIN32
+    if (newRTS)
+    {
+        EscapeCommFunction(_fileDescriptor, SETRTS);
+    }
+    else
+    {
+        EscapeCommFunction(_fileDescriptor, CLRRTS);
+    }
+    _rtsEnabled = newRTS;
+#else
+    int tmpbits = posixGetModemControlBits(_fileDescriptor);
+    if (tmpbits != ERROR_CONDITION)
+    {
+        if (newRTS) tmpbits |= TIOCM_RTS;
+        else tmpbits &= ~TIOCM_RTS;
+        posixSetModemControlBits(_fileDescriptor, tmpbits);
+    }
+#endif // WIN32
+}
+    
+bool SerialPort::getDTR() const
+{
+#ifdef WIN32
+    // No way to get DTR/RTS directly from Windows, so we have to
+    // grab what the caller put in during a previous set*() call.
+    return _dtrEnabled;
+#else
+    int tmpbits = posixGetModemControlBits(_fileDescriptor);
+    if (tmpbits != ERROR_CONDITION)
+    {
+        return tmpbits & TIOCM_DTR;
+    }
+    else
+    {
+        return ERROR_CONDITION;
+    }
+#endif // WIN32
+}
+
+void SerialPort::setDTR(const bool newDTR)
+{
+#ifdef WIN32
+    if (newDTR)
+    {
+        EscapeCommFunction(_fileDescriptor, SETDTR);
+    }
+    else
+    {
+        EscapeCommFunction(_fileDescriptor, CLRDTR);
+    }
+    _dtrEnabled = newDTR;
+#else
+    int tmpbits = posixGetModemControlBits(_fileDescriptor);
+    if (tmpbits != ERROR_CONDITION)
+    {
+        if (newDTR) tmpbits |= TIOCM_DTR;
+        else tmpbits &= ~TIOCM_DTR;
+        posixSetModemControlBits(_fileDescriptor, tmpbits);
+    }
+#endif // WIN32
+}
+    
+int SerialPort::open()
+{
+#ifdef WIN32
+    TCHAR portName[32];
+    _stprintf_s(portName, sizeof(portName)/sizeof(TCHAR), _T("\\\\.\\%s"), _portName.c_str());
+    
+    _fileDescriptor = CreateFile(
+        portName, 
+        GENERIC_READ | GENERIC_WRITE,
+        0, 
+        0, 
+        OPEN_EXISTING, 
+        FILE_FLAG_OVERLAPPED, 
+        0);
+#else
+    _fileDescriptor = ::open(_portName.c_str(), O_RDWR);
+#endif // WIN32
+
+    return (int)_fileDescriptor;
+}
+
+int SerialPort::close()
+{
+#ifdef WIN32
+    int rv = CloseHandle(_fileDescriptor);
+#else
+    int rv = ::close(_fileDescriptor);
+#endif // WIN32
+
+    _fileDescriptor = INVALID_FILE_DESCRIPTOR;
+    return rv;
+}
+    
+bool SerialPort::isOpen() const
+{
+    return _fileDescriptor != INVALID_FILE_DESCRIPTOR;
+}
\ No newline at end of file
Index: src/serialport.h
===================================================================
--- src/serialport.h	(revision 0)
+++ src/serialport.h	(working copy)
@@ -0,0 +1,81 @@
+//==========================================================================
+// Name:            serialport.h
+//
+// Purpose:         Serial port management.
+// Created:         Dec. 28, 2012
+// Authors:         Mooneer Salem
+// 
+// License:
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General License version 2.1,
+//  as published by the Free Software Foundation.  This program is
+//  distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+//  License for more details.
+//
+//  You should have received a copy of the GNU General License
+//  along with this program; if not, see <http://www.gnu.org/licenses/>.
+//
+//==========================================================================
+
+#ifndef SERIAL_PORT_H
+#define SERIAL_PORT_H
+
+#ifdef WIN32
+#include <windows.h>
+#endif // WIN32
+
+#include <string>
+
+enum SerialPortParity
+{
+    NONE,
+    EVEN,
+    ODD
+};
+
+// Quick and dirty serial port class that supports the minimum necessary to
+// do PTT (for now). Can be extended later (send/receive data for CAT control, 
+// for example).
+class SerialPort
+{
+public:
+    // portName is a path to the serial port, in one of the following formats:
+    // OSX: /dev/tty.*
+    // Linux: /dev/ttyS*
+    // Windows: COM*:
+    SerialPort(const std::string &portName);
+    virtual ~SerialPort();
+    
+    bool getRTS() const;
+    void setRTS(const bool newRTS);
+    
+    bool getDTR() const;
+    void setDTR(const bool newDTR);
+    
+    int open();
+    int close();
+    
+    bool isOpen() const;
+    
+private:
+    const std::string _portName;
+    
+#ifdef WIN32
+    HANDLE _fileDescriptor;
+    
+    bool _rtsEnabled;
+    bool _dtrEnabled;
+#else
+    int _fileDescriptor;
+#endif // WIN32
+        
+    // Object should not be copied since there can be only one handle open
+    // per serial port. An attempt to use the copy constructor here, even
+    // implicitly, will result in a compile error due to the declaration below.
+    SerialPort(const SerialPort&);
+};
+
+#endif // SERIAL_PORT_H
\ No newline at end of file