diff --git a/src/libespeak-ng/compiledata.c b/src/libespeak-ng/compiledata.c
index 5b6d887b..002da34c 100644
--- a/src/libespeak-ng/compiledata.c
+++ b/src/libespeak-ng/compiledata.c
@@ -17,12 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <strings.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <time.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "espeak_ng.h"
diff --git a/src/libespeak-ng/compiledict.c b/src/libespeak-ng/compiledict.c
index ba3ad3d3..a98e7580 100644
--- a/src/libespeak-ng/compiledict.c
+++ b/src/libespeak-ng/compiledict.c
@@ -18,11 +18,16 @@
  *             <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <wctype.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/compilembrola.c b/src/libespeak-ng/compilembrola.c
index 6c3ade28..9d477899 100644
--- a/src/libespeak-ng/compilembrola.c
+++ b/src/libespeak-ng/compilembrola.c
@@ -17,9 +17,14 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "espeak_ng.h"
diff --git a/src/libespeak-ng/debug.c b/src/libespeak-ng/debug.c
index 3c56407b..15bd6e35 100644
--- a/src/libespeak-ng/debug.c
+++ b/src/libespeak-ng/debug.c
@@ -16,6 +16,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <stdarg.h>
 #include "speech.h"
diff --git a/src/libespeak-ng/dictionary.c b/src/libespeak-ng/dictionary.c
index 9e9bdce5..f90ce0c6 100644
--- a/src/libespeak-ng/dictionary.c
+++ b/src/libespeak-ng/dictionary.c
@@ -17,10 +17,15 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include <wctype.h>
 #include <wchar.h>
@@ -153,7 +158,7 @@ static void InitGroups(Translator *tr)
 
 		if(p[0] == RULE_REPLACEMENTS)
 		{
-			pw = (unsigned int *)(((long64)p+4) & ~3);  // advance to next word boundary
+			pw = (unsigned int *)(((intptr_t)p+4) & ~3);  // advance to next word boundary
 			tr->langopts.replace_chars = pw;
 			while(pw[0] != 0)
 			{
diff --git a/src/libespeak-ng/espeak_command.c b/src/libespeak-ng/espeak_command.c
index 7658cee3..26e512ff 100644
--- a/src/libespeak-ng/espeak_command.c
+++ b/src/libespeak-ng/espeak_command.c
@@ -16,6 +16,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include "speech.h"
 #include "espeak_command.h"
 #include <stdlib.h>
diff --git a/src/libespeak-ng/event.c b/src/libespeak-ng/event.c
index f47362ab..879be7b9 100644
--- a/src/libespeak-ng/event.c
+++ b/src/libespeak-ng/event.c
@@ -18,6 +18,8 @@
 
 // This source file is only used for asynchronious modes
 
+#include "config.h"
+
 #ifndef PLATFORM_WINDOWS
 #include <unistd.h>
 #endif
diff --git a/src/libespeak-ng/fifo.c b/src/libespeak-ng/fifo.c
index af29ce49..93302d55 100644
--- a/src/libespeak-ng/fifo.c
+++ b/src/libespeak-ng/fifo.c
@@ -18,6 +18,8 @@
 
 // This source file is only used for asynchronious modes
 
+#include "config.h"
+
 #ifndef PLATFORM_WINDOWS
 #include <unistd.h>
 #endif
diff --git a/src/libespeak-ng/intonation.c b/src/libespeak-ng/intonation.c
index 3c351f01..8100fbf9 100644
--- a/src/libespeak-ng/intonation.c
+++ b/src/libespeak-ng/intonation.c
@@ -17,10 +17,15 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <wctype.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/klatt.c b/src/libespeak-ng/klatt.c
index 5693ef40..17888d04 100644
--- a/src/libespeak-ng/klatt.c
+++ b/src/libespeak-ng/klatt.c
@@ -23,10 +23,15 @@
 
 // See URL: ftp://svr-ftp.eng.cam.ac.uk/pub/comp.speech/synthesis/klatt.3.04.tar.gz
 
+#include "config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/mbrowrap.c b/src/libespeak-ng/mbrowrap.c
index bd0b2d71..4218fd15 100644
--- a/src/libespeak-ng/mbrowrap.c
+++ b/src/libespeak-ng/mbrowrap.c
@@ -16,6 +16,8 @@
  * GNU General Public License for more details.
  */
 
+#include "config.h"
+
 #include "speech.h"
 
 #include <stdarg.h>
diff --git a/src/libespeak-ng/numbers.c b/src/libespeak-ng/numbers.c
index 57ab9e41..a270648d 100644
--- a/src/libespeak-ng/numbers.c
+++ b/src/libespeak-ng/numbers.c
@@ -17,11 +17,16 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdbool.h>
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include <wctype.h>
 #include <wchar.h>
diff --git a/src/libespeak-ng/phonemelist.c b/src/libespeak-ng/phonemelist.c
index 0e5285fb..e47b4133 100644
--- a/src/libespeak-ng/phonemelist.c
+++ b/src/libespeak-ng/phonemelist.c
@@ -17,9 +17,14 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/readclause.c b/src/libespeak-ng/readclause.c
index 332cb300..c05f5ee1 100644
--- a/src/libespeak-ng/readclause.c
+++ b/src/libespeak-ng/readclause.c
@@ -17,6 +17,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
@@ -24,6 +26,9 @@
 #include <wctype.h>
 #include <wchar.h>
 #include <math.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/setlengths.c b/src/libespeak-ng/setlengths.c
index 7412276e..d92c3f94 100644
--- a/src/libespeak-ng/setlengths.c
+++ b/src/libespeak-ng/setlengths.c
@@ -17,9 +17,14 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <wctype.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/sonic.c b/src/libespeak-ng/sonic.c
index e57550c3..e4fd7594 100644
--- a/src/libespeak-ng/sonic.c
+++ b/src/libespeak-ng/sonic.c
@@ -24,7 +24,6 @@
 #include <string.h>
 #include <stdarg.h>
 
-#include "speech.h"
 #include "sonic.h"
 
 struct sonicStreamStruct {
diff --git a/src/libespeak-ng/speak_lib.c b/src/libespeak-ng/speak_lib.c
index b57d5f6c..c6dc1800 100644
--- a/src/libespeak-ng/speak_lib.c
+++ b/src/libespeak-ng/speak_lib.c
@@ -17,6 +17,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include "stdio.h"
 #include "ctype.h"
 #include "string.h"
diff --git a/src/libespeak-ng/spect.c b/src/libespeak-ng/spect.c
index 408185e2..a150a33c 100644
--- a/src/libespeak-ng/spect.c
+++ b/src/libespeak-ng/spect.c
@@ -17,6 +17,12 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
 #include "speak_lib.h"
 #include "speech.h"
 #include "phoneme.h"
@@ -25,7 +31,6 @@
 #include "spect.h"
 
 #include <math.h>
-#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/libespeak-ng/speech.h b/src/libespeak-ng/speech.h
index 31c2458f..e04268e7 100644
--- a/src/libespeak-ng/speech.h
+++ b/src/libespeak-ng/speech.h
@@ -64,10 +64,13 @@ extern "C"
 typedef unsigned short USHORT;
 typedef unsigned char UCHAR;
 typedef double DOUBLEX;
+
+#if !HAVE_STDINT_H
 #ifdef _WIN64
-typedef uint64_t long64;        // use this for conversion between pointers and integers
+typedef signed __int64 intptr_t;
 #else
-typedef unsigned long long64;   // use this for conversion between pointers and integers
+typedef signed __int32 intptr_t;
+#endif
 #endif
 
 
diff --git a/src/libespeak-ng/synth_mbrola.c b/src/libespeak-ng/synth_mbrola.c
index 6afaa62d..b961d8ca 100644
--- a/src/libespeak-ng/synth_mbrola.c
+++ b/src/libespeak-ng/synth_mbrola.c
@@ -17,12 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <wctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
diff --git a/src/libespeak-ng/synthdata.c b/src/libespeak-ng/synthdata.c
index 27080912..fca687f7 100644
--- a/src/libespeak-ng/synthdata.c
+++ b/src/libespeak-ng/synthdata.c
@@ -17,12 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <wctype.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 
 #include "speak_lib.h"
diff --git a/src/libespeak-ng/synthesize.c b/src/libespeak-ng/synthesize.c
index 82b80871..95baee9c 100644
--- a/src/libespeak-ng/synthesize.c
+++ b/src/libespeak-ng/synthesize.c
@@ -17,12 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <wctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include "speak_lib.h"
 #include "speech.h"
@@ -139,7 +144,7 @@ static void EndPitch(int voice_break)
 
 static void DoAmplitude(int amp, unsigned char *amp_env)
 {
-	long64 *q;
+	intptr_t *q;
 
 	last_amp_cmd = wcmdq_tail;
 	amp_length = 0;       // total length of vowel with this amplitude envelope
@@ -147,7 +152,7 @@ static void DoAmplitude(int amp, unsigned char *amp_env)
 	q = wcmdq[wcmdq_tail];
 	q[0] = WCMD_AMPLITUDE;
 	q[1] = 0;        // fill in later from amp_length
-	q[2] = (long64)amp_env;
+	q[2] = (intptr_t)amp_env;
 	q[3] = amp;
 	WcmdqInc();
 }
@@ -156,7 +161,7 @@ static void DoAmplitude(int amp, unsigned char *amp_env)
 
 static void DoPitch(unsigned char *env, int pitch1, int pitch2)
 {
-	long64 *q;
+	intptr_t *q;
 
 	EndPitch(0);
 
@@ -176,7 +181,7 @@ static void DoPitch(unsigned char *env, int pitch1, int pitch2)
 	q = wcmdq[wcmdq_tail];
 	q[0] = WCMD_PITCH;
 	q[1] = 0;   // length, fill in later from pitch_length
-	q[2] = (long64)env;
+	q[2] = (intptr_t)env;
 	q[3] = (pitch1 << 16) + pitch2;
 	WcmdqInc();
 }
@@ -255,7 +260,7 @@ static int DoSample2(int index, int which, int std_length, int control, int leng
 	int min_length;
 	int x;
 	int len4;
-	long64 *q;
+	intptr_t *q;
 	unsigned char *p;
 
 	index = index & 0x7fffff;
@@ -331,7 +336,7 @@ static int DoSample2(int index, int which, int std_length, int control, int leng
 		q = wcmdq[wcmdq_tail];
 		q[0] = WCMD_WAVE2;
 		q[1] = length | (wav_length << 16);   // length in samples
-		q[2] = (long64)(&wavefile_data[index]);
+		q[2] = (intptr_t)(&wavefile_data[index]);
 		q[3] = wav_scale + (amp << 8);
 		WcmdqInc();
 		return(length);
@@ -352,7 +357,7 @@ static int DoSample2(int index, int which, int std_length, int control, int leng
 	q = wcmdq[wcmdq_tail];
 	q[0] = WCMD_WAVE;
 	q[1] = x;   // length in samples
-	q[2] = (long64)(&wavefile_data[index]);
+	q[2] = (intptr_t)(&wavefile_data[index]);
 	q[3] = wav_scale + (amp << 8);
 	WcmdqInc();
 
@@ -367,7 +372,7 @@ static int DoSample2(int index, int which, int std_length, int control, int leng
 		q = wcmdq[wcmdq_tail];
 		q[0] = WCMD_WAVE;
 		q[1] = len4*2;   // length in samples
-		q[2] = (long64)(&wavefile_data[index+x]);
+		q[2] = (intptr_t)(&wavefile_data[index+x]);
 		q[3] = wav_scale + (amp << 8);
 		WcmdqInc();
 
@@ -383,7 +388,7 @@ static int DoSample2(int index, int which, int std_length, int control, int leng
 		q = wcmdq[wcmdq_tail];
 		q[0] = WCMD_WAVE;
 		q[1] = length;   // length in samples
-		q[2] = (long64)(&wavefile_data[index+x]);
+		q[2] = (intptr_t)(&wavefile_data[index+x]);
 		q[3] = wav_scale + (amp << 8);
 		WcmdqInc();
 	}
@@ -764,7 +769,7 @@ static void SmoothSpect(void)
 {
 	// Limit the rate of frequence change of formants, to reduce chirping
 
-	long64 *q;
+	intptr_t *q;
 	frame_t *frame;
 	frame_t *frame2;
 	frame_t *frame1;
@@ -806,7 +811,7 @@ static void SmoothSpect(void)
 			frame1 = (frame_t *)q[3];
 			if(frame1 == frame)
 			{
-				q[3] = (long64)frame2;
+				q[3] = (intptr_t)frame2;
 				frame1 = frame2;
 			}
 			else
@@ -854,7 +859,7 @@ static void SmoothSpect(void)
 						modified = 1;
 					}
 					frame2->ffreq[pk] = frame1->ffreq[pk] + allowed;
-					q[2] = (long64)frame2;
+					q[2] = (intptr_t)frame2;
 				}
 				else
 				if(diff < -allowed)
@@ -865,7 +870,7 @@ static void SmoothSpect(void)
 						modified = 1;
 					}
 					frame2->ffreq[pk] = frame1->ffreq[pk] - allowed;
-					q[2] = (long64)frame2;
+					q[2] = (intptr_t)frame2;
 				}
 			}
 		}
@@ -896,7 +901,7 @@ static void SmoothSpect(void)
 			{
 				if(frame1 == frame)
 				{
-					q[2] = (long64)frame2;
+					q[2] = (intptr_t)frame2;
 					frame1 = frame2;
 				}
 				else
@@ -938,7 +943,7 @@ static void SmoothSpect(void)
 						modified = 1;
 					}
 					frame2->ffreq[pk] = frame1->ffreq[pk] + allowed;
-					q[3] = (long64)frame2;
+					q[3] = (intptr_t)frame2;
 				}
 				else
 				if(diff < -allowed)
@@ -949,7 +954,7 @@ static void SmoothSpect(void)
 						modified = 1;
 					}
 					frame2->ffreq[pk] = frame1->ffreq[pk] - allowed;
-					q[3] = (long64)frame2;
+					q[3] = (intptr_t)frame2;
 				}
 			}
 		}
@@ -986,7 +991,7 @@ int DoSpect2(PHONEME_TAB *this_ph, int which, FMT_PARAMS *fmt_params,  PHONEME_L
 	frame_t *frame2;
 	frame_t *fr;
 	int ix;
-	long64 *q;
+	intptr_t *q;
 	int len;
 	int frame_length;
 	int length_factor;
@@ -1072,7 +1077,7 @@ int DoSpect2(PHONEME_TAB *this_ph, int which, FMT_PARAMS *fmt_params,  PHONEME_L
 		   && !(last_frame->frflags & FRFLAG_BREAK))
 		{
 			// last frame of previous sequence was zero-length, replace with first of this sequence
-			wcmdq[last_wcmdq][3] = (long64)frame1;
+			wcmdq[last_wcmdq][3] = (intptr_t)frame1;
 
 			if(last_frame->frflags & FRFLAG_BREAK_LF)
 			{
@@ -1084,7 +1089,7 @@ int DoSpect2(PHONEME_TAB *this_ph, int which, FMT_PARAMS *fmt_params,  PHONEME_L
 						fr->ffreq[ix] = last_frame->ffreq[ix];
 					fr->fheight[ix] = last_frame->fheight[ix];
 				}
-				wcmdq[last_wcmdq][3] = (long64)fr;
+				wcmdq[last_wcmdq][3] = (intptr_t)fr;
 			}
 		}
 	}
@@ -1169,8 +1174,8 @@ int DoSpect2(PHONEME_TAB *this_ph, int which, FMT_PARAMS *fmt_params,  PHONEME_L
 				q = wcmdq[wcmdq_tail];
 				q[0] = wcmd_spect;
 				q[1] = len + (modulation << 16);
-				q[2] = (long64)frame1;
-				q[3] = (long64)frame2;
+				q[2] = (intptr_t)frame1;
+				q[3] = (intptr_t)frame2;
 
 				WcmdqInc();
 			}
@@ -1245,7 +1250,7 @@ void DoVoiceChange(voice_t *v)
 	v2 = (voice_t *)malloc(sizeof(voice_t));
 	memcpy(v2,v,sizeof(voice_t));
 	wcmdq[wcmdq_tail][0] = WCMD_VOICE;
-	wcmdq[wcmdq_tail][2] = (long64)v2;
+	wcmdq[wcmdq_tail][2] = (intptr_t)v2;
 	WcmdqInc();
 }
 
@@ -1282,7 +1287,7 @@ void DoEmbedded(int *embix, int sourceix)
 					DoPause(10,0);   // ensure a break in the speech
 					wcmdq[wcmdq_tail][0] = WCMD_WAVE;
 					wcmdq[wcmdq_tail][1] = soundicon_tab[value].length;
-					wcmdq[wcmdq_tail][2] = (long64)soundicon_tab[value].data + 44;  // skip WAV header
+					wcmdq[wcmdq_tail][2] = (intptr_t)soundicon_tab[value].data + 44;  // skip WAV header
 					wcmdq[wcmdq_tail][3] = 0x1500;   // 16 bit data, amp=21
 					WcmdqInc();
 				}
diff --git a/src/libespeak-ng/synthesize.h b/src/libespeak-ng/synthesize.h
index ca84572a..de77b2b6 100644
--- a/src/libespeak-ng/synthesize.h
+++ b/src/libespeak-ng/synthesize.h
@@ -477,7 +477,7 @@ extern unsigned char pitch_adjust_tab[MAX_PITCH_VALUE+1];
 #define N_WCMDQ   170
 #define MIN_WCMDQ  25   // need this many free entries before adding new phoneme
 
-extern long64 wcmdq[N_WCMDQ][4];
+extern intptr_t wcmdq[N_WCMDQ][4];
 extern int wcmdq_head;
 extern int wcmdq_tail;
 
diff --git a/src/libespeak-ng/tr_languages.c b/src/libespeak-ng/tr_languages.c
index 8580968f..7c6997ae 100644
--- a/src/libespeak-ng/tr_languages.c
+++ b/src/libespeak-ng/tr_languages.c
@@ -17,12 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <wctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <locale.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include <wctype.h>
 
diff --git a/src/libespeak-ng/translate.c b/src/libespeak-ng/translate.c
index 3def103b..eee7399b 100644
--- a/src/libespeak-ng/translate.c
+++ b/src/libespeak-ng/translate.c
@@ -17,10 +17,15 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 #include <wctype.h>
 #include <wchar.h>
diff --git a/src/libespeak-ng/voices.c b/src/libespeak-ng/voices.c
index 97022dc8..cc8f9284 100644
--- a/src/libespeak-ng/voices.c
+++ b/src/libespeak-ng/voices.c
@@ -17,11 +17,17 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include "stdio.h"
 #include "ctype.h"
 #include "wctype.h"
 #include "string.h"
 #include "stdlib.h"
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
 #include "speech.h"
 
 #ifdef PLATFORM_WINDOWS
diff --git a/src/libespeak-ng/wave.c b/src/libespeak-ng/wave.c
index 5927482c..ad9a6089 100644
--- a/src/libespeak-ng/wave.c
+++ b/src/libespeak-ng/wave.c
@@ -17,6 +17,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include "speech.h"
 
 #ifdef USE_ASYNC
diff --git a/src/libespeak-ng/wave_pulse.c b/src/libespeak-ng/wave_pulse.c
index 52331fef..93463008 100644
--- a/src/libespeak-ng/wave_pulse.c
+++ b/src/libespeak-ng/wave_pulse.c
@@ -24,6 +24,8 @@
 // * prebuf,... size?
 // * 0.9.6: pb pulse_free using tlength=8820 (max size never returned -> tlength=10000 ok, but higher drain).
 //
+#include "config.h"
+
 #include "speech.h"
 
 #ifdef USE_ASYNC
diff --git a/src/libespeak-ng/wavegen.c b/src/libespeak-ng/wavegen.c
index 26ff2d66..a3b0c8ee 100644
--- a/src/libespeak-ng/wavegen.c
+++ b/src/libespeak-ng/wavegen.c
@@ -20,10 +20,15 @@
 // this version keeps wavemult window as a constant fraction
 // of the cycle length - but that spreads out the HF peaks too much
 
+#include "config.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <math.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
 
 
 
@@ -129,7 +134,7 @@ unsigned char *out_end;
 int outbuf_size = 0;
 
 // the queue of operations passed to wavegen from sythesize
-long64 wcmdq[N_WCMDQ][4];
+intptr_t wcmdq[N_WCMDQ][4];
 int wcmdq_head=0;
 int wcmdq_tail=0;
 
@@ -1823,7 +1828,7 @@ int WavegenFill2(int fill_zeros)
 // return: 0  output buffer has been filled
 // return: 1  input command queue is now empty
 
-	long64 *q;
+	intptr_t *q;
 	int length;
 	int result;
 	int marker_type;
diff --git a/src/speak-ng.c b/src/speak-ng.c
index 09550afa..d1ddc30e 100644
--- a/src/speak-ng.c
+++ b/src/speak-ng.c
@@ -17,6 +17,8 @@
  * along with this program; if not, see: <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
+
 #include "speech.h"
 
 #include <stdbool.h>