64 bit target for Windows.

Makefile.win

@@ -2,32 +2,52 @@
 # Makefile for native Windows version of Dire Wolf.
 #
 #
-# This is built in the Cygwin environment but with the 
+# This is built in the Cygwin environment with the MinGW compiler.
-# compiler from http://www.mingw.org/ so there is no
+# MinGW is a special version of gcc that generates native Windows executables.
-# dependency on extra DLLs.
-#
-# The MinGW/bin directory must be in the PATH for the 
-# compiler.  e.g.   export PATH=/cygdrive/c/MinGW/bin:$PATH
-#
-# Failure to have the path set correctly will result in the
-# obscure message:     Makefile.win:... recipe for target ... failed. 
-#
-# Type "which gcc" to make sure you are getting the right one!
 #
+# A minimum of Windows XP is required due to some of the system
+# features being used.  XP requires a Pentium processor or later.
+# The DSP filters can be sped up considerably with the SSE instructions.
+# The SSE instructions were introduced in 1999 with the Pentium III series.
+# SSE2 instructions, added in 2000, with the Pentium 4, don't seem to offer any advantage.
 
 
-all : direwolf decode_aprs text2tt tt2text ll2utm utm2ll aclients log2gpx gen_packets atest ttcalc tnctest tnctest-issue-132 kissutil
+
+all : direwolf decode_aprs text2tt tt2text ll2utm utm2ll aclients log2gpx gen_packets atest ttcalc kissutil
+# tnctest tnctest-issue-132
 
 
-# People say we need -mthreads option for threads to work properly.
-# They also say it creates a dependency on mingwm10.dll but I'm not seeing that.
-# Maybe that is for pthreads.  We are using the Windows threads.
 
-# -Ofast was added in gcc 4.6 which was the MinGW version back in 2012.
+# October 2019, version 1.6:  64 bit target for Windows.  It runs twice as fast!
+# Originally I installed MinGW outside of Cygwin and added location to PATH in .bash_profile.
+# Install these two Cygwin packages so the compiler is in /usr/bin
+# and no special PATH is required.
+#	mingw64-x86_64-gcc-core (7.4.0-1)
+#	mingw64-x86_64-gcc-g++ (7.4.0-1)
+
+CC ?= x86_64-w64-mingw32-gcc
+CXX ?= x86_64-w64-mingw32-g++
+AR ?= x86_64-w64-mingw32-ar
+WINDRES ?= x86_64-w64-mingw32-windres
+
+# MinGW requires "-mthreads" option for threadsafe operation.
+
+CFLAGS := -Ofast -Iregex -Iutm -Igeotranz -mthreads -DUSE_REGEX_STATIC -Wall -Wlogical-op
+
+# For a 32 bit target, install these Cygwin packages.
+#	mingw64-i686gcc-core (7.4.0-1)
+#	mingw64-i686gcc-g++ (7.4.0-1)
+# i686 corresponds to Pentium II.
+# We need to add Pentium III and SSE instructions to speed things up.
+# Pentium 4 and SSE2 offers no advantage so no reason to bump up minimum CPU requirement.
+# Code for the 64 bit target runs about twice as fast, so use that if possible.
+
+#CC = i686-w64-mingw32-gcc
+#CXX = i686-w64-mingw32-g++
+#AR = i686-w64-mingw32-ar
+#WINDRES = i686-w64-mingw32-windres
+#CFLAGS += -march=pentium3 -msse
 
-CC := gcc
-CFLAGS := -Ofast -march=pentium3 -msse -Iregex -Iutm -Igeotranz -mthreads -DUSE_REGEX_STATIC -Wall -Wlogical-op
-AR := ar
 
 CFLAGS += -g
 # TEMP EXPERIMENT - DO NOT RELEASE
@@ -49,37 +69,10 @@ CFLAGS += -g
 CFLAGS += -Wsign-compare
 CFLAGS += -Wuninitialized
 CFLAGS += -Wold-style-declaration
-# CFLAGS += -fdelete-null-pointer-checks -Wnull-dereference  ---not recognized
+CFLAGS += -Wnull-dereference
+CFLAGS += -fdelete-null-pointer-checks
+#CFLAGS += -Wmissing-prototypes
 #CFLAGS += -Wold-style-definition
-#-Wmissing-prototypes
-
-#
-# Let's see impact of various optimization levels.
-# Benchmark results with MinGW gcc version 4.6.2.
-#
-#	seconds	options, comments
-#	------	-----------------
-#	119.8	-O2	Used for version 0.8
-#	 92.1	-O3
-#	 88.7	-Ofast  (should be same as -O3 -ffastmath)
-#	 87.5	-Ofast -march=pentium
-#	 74.1	-Ofast -msse
-#	 72.2	-Ofast -march=pentium -msse
-#	 62.0	-Ofast -march=pentium3   (this implies -msse)
-#	 61.9	-Ofast -march=pentium3 -msse
-#
-# A minimum of Windows XP is required due to some of the system
-# features being used.  XP requires a Pentium processor or later.
-# The DSP filters can be sped up considerably with the SSE instructions.
-# The SSE instructions were introduced in 1999 with the 
-# Pentium III series.  
-# SSE2 instructions, added in 2000, don't seem to offer any advantage.
-#
-# For version 0.9, a Pentium 3 or equivalent is now the minimum required
-# for the prebuilt Windows distribution.
-# If you insist on using a computer from the previous century,
-# you can compile this yourself with different options.
-#
 
 
 
@@ -109,7 +102,7 @@ direwolf : direwolf.o config.o recv.o demod.o dsp.o demod_afsk.o demod_psk.o dem
 	$(CC) $(CFLAGS) -o $@ $^ -lwinmm -lws2_32
 
 dw-icon.o : dw-icon.rc dw-icon.ico
-	windres dw-icon.rc -o $@
+	$(WINDRES) dw-icon.rc -o $@
 
 
 # Optimization for slow processors.
@@ -211,7 +204,7 @@ appserver : appserver.o agwlib.o dwsock.o textcolor.o dtime_now.o misc.a
 # UTM, USNG, MGRS conversions.
 
 geotranz.a : error_string.o  mgrs.o  polarst.o  tranmerc.o  ups.o  usng.o  utm.o
-	ar -cr $@ $^
+	$(AR) -cr $@ $^
 
 error_string.o : geotranz/error_string.c
 	$(CC) $(CFLAGS) -c -o $@ $^
@@ -243,7 +236,7 @@ utm.o : geotranz/utm.c
 # Consider upgrading from https://www.gnu.org/software/libc/sources.html
 
 regex.a : regex.o
-	ar -cr $@ $^	
+	$(AR) -cr $@ $^
  
 regex.o : regex/regex.c
 	$(CC) $(CFLAGS) -Dbool=int -Dtrue=1 -Dfalse=0 -c -o $@ $^
@@ -254,7 +247,7 @@ regex.o : regex/regex.c
 # but not on Windows.  Need to provide our own copy.
 
 misc.a : strsep.o strtok_r.o strcasestr.o strlcpy.o strlcat.o
-	ar -cr $@ $^	
+	$(AR) -cr $@ $^
  
 strsep.o : misc/strsep.c
 	$(CC) $(CFLAGS) -c -o $@ $^

audio_win.c

@@ -222,8 +222,8 @@ static struct adev_s {
  *----------------------------------------------------------------*/
 
 
-static void CALLBACK in_callback (HWAVEIN handle, UINT msg, DWORD instance, DWORD param1, DWORD param2);
+static void CALLBACK in_callback (HWAVEIN handle, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2);
-static void CALLBACK out_callback (HWAVEOUT handle, UINT msg, DWORD instance, DWORD param1, DWORD param2);
+static void CALLBACK out_callback (HWAVEOUT handle, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2);
 
 int audio_open (struct audio_s *pa)
 {
@@ -684,24 +684,25 @@ int audio_open (struct audio_s *pa)
  * Called when input audio block is ready.
  */
 
-static void CALLBACK in_callback (HWAVEIN handle, UINT msg, DWORD instance, DWORD param1, DWORD param2)
+static void CALLBACK in_callback (HWAVEIN handle, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
 {
 
+	//dw_printf ("in_callback, handle = %p, msg = %d, instance = %I64d\n", handle, msg, instance);
+
 	int a = instance;
-
-//dw_printf ("in_callback, handle = %d, a = %d\n", (int)handle, a);
-
 	assert (a >= 0 && a < MAX_ADEVS);
 	struct adev_s *A = &(adev[a]);
 
-
 	if (msg == WIM_DATA) {
 	
 	  WAVEHDR *p = (WAVEHDR*)param1;
 	  
-	  p->dwUser = -1;		/* needs to be unprepared. */
+	  p->dwUser = 0x5a5a5a5a;	/* needs to be unprepared. */
+					/* dwUser can be 32 or 64 bit unsigned int. */
 	  p->lpNext = NULL;
 
+	  // dw_printf ("dwBytesRecorded = %ld\n", p->dwBytesRecorded);
+
 	  EnterCriticalSection (&(A->in_cs));
 
 	  if (A->in_headp == NULL) {
@@ -726,7 +727,7 @@ static void CALLBACK in_callback (HWAVEIN handle, UINT msg, DWORD instance, DWOR
  */
 
 
-static void CALLBACK out_callback (HWAVEOUT handle, UINT msg, DWORD instance, DWORD param1, DWORD param2)
+static void CALLBACK out_callback (HWAVEOUT handle, UINT msg, DWORD_PTR instance, DWORD_PTR param1, DWORD_PTR param2)
 {
 	if (msg == WOM_DONE) {   
 
@@ -807,7 +808,7 @@ int audio_get (int a)
 
 	      p = (WAVEHDR*)(A->in_headp);		/* no need to be volatile at this point */
 
-	      if (p->dwUser == (DWORD)(-1)) {
+	      if (p->dwUser == 0x5a5a5a5a) {		// dwUser can be 32 or bit unsigned.
 	        waveInUnprepareHeader(A->audio_in_handle, p, sizeof(WAVEHDR));
 	        p->dwUser = 0;	/* Index for next byte. */
 

beacon.c

@@ -59,25 +59,6 @@
 #include "mheard.h"
 
 
-#if __WIN32__
-
-/* 
- * Windows doesn't have localtime_r.
- * It should have the equivalent localtime_s, with opposite parameter
- * order,  but I get undefined reference when trying to use it.
- */
-
-struct tm *localtime_r(time_t *clock, struct tm *res)
-{
-	struct tm *tm;
-
-	tm = localtime (clock);
-	memcpy (res, tm, sizeof(struct tm));
-	return (res);
-}
-
-#endif
-
 
 /*
  * Save pointers to configuration settings.

direwolf.h

@@ -27,6 +27,7 @@
 #define _WIN32_WINNT 0x0501     /* Minimum OS version is XP. */
 #define WINVER       0x0501     /* Minimum OS version is XP. */
 
+#include <winsock2.h>
 #include <windows.h>
 
 #endif
@@ -109,11 +110,14 @@
 
 
 #if __WIN32__
+
 #define PTW32_STATIC_LIB
 //#include "pthreads/pthread.h"
-#define gmtime_r( _clock, _result ) \
+
-        ( *(_result) = *gmtime( (_clock) ), \
+// This enables definitions of localtime_r and gmtime_r in system time.h.
-          (_result) )
+//#define _POSIX_THREAD_SAFE_FUNCTIONS 1
+#define _POSIX_C_SOURCE 1
+
 #else
 #include <pthread.h>
 #endif

dtime_now.c

@@ -84,25 +84,6 @@ double dtime_now (void)
 }
 
 
-#if __WIN32__
-
-/* 
- * Windows doesn't have localtime_r.
- * It should have the equivalent localtime_s, with opposite parameter
- * order,  but I get undefined reference when trying to use it.
- */
-
-static struct tm *localtime_r(time_t *clock, struct tm *res)
-{
-	struct tm *tm;
-
-	tm = localtime (clock);
-	memcpy (res, tm, sizeof(struct tm));
-	return (res);
-}
-
-#endif
-
 
 /*------------------------------------------------------------------
  *