Add -Wmissing-prototypes compiler warning

configure.ac

@@ -273,6 +273,7 @@ AM_CFLAGS="\
  -Wfloat-equal\
  -Wmissing-format-attribute\
  -Wmissing-noreturn\
+ -Wmissing-prototypes\
  -Wpointer-arith\
  -Wshadow\
  -Wstrict-prototypes\

darwin/Battery.c

@@ -1,5 +1,4 @@
-
+#include "Battery.h"
-#include "BatteryMeter.h"
 
 #include <math.h>
 

darwin/Battery.h

@@ -1,6 +1,8 @@
 #ifndef HEADER_Battery
 #define HEADER_Battery
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif

dragonflybsd/Battery.c

@@ -6,7 +6,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "BatteryMeter.h"
+#include "Battery.h"
+
 #include <math.h>
 #include <sys/sysctl.h>
 

dragonflybsd/Battery.h

@@ -8,6 +8,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif

freebsd/Battery.c

@@ -5,7 +5,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "BatteryMeter.h"
+#include "Battery.h"
+
 #include <math.h>
 #include <sys/sysctl.h>
 

freebsd/Battery.h

@@ -7,6 +7,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif

openbsd/Battery.c

@@ -6,7 +6,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "BatteryMeter.h"
+#include "Battery.h"
+
 #include <sys/sysctl.h>
 #include <sys/sensors.h>
 #include <errno.h>

openbsd/Battery.h

@@ -8,6 +8,8 @@ Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif

solaris/Battery.c

@@ -1,6 +1,6 @@
-#include <math.h>
+#include "Battery.h"
 
-#include "BatteryMeter.h"
+#include <math.h>
 
 void Battery_getData(double* level, ACPresence* isOnAC) {
    *level = NAN;

solaris/Battery.h

@@ -1,6 +1,8 @@
 #ifndef HEADER_Battery
 #define HEADER_Battery
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif

unsupported/Battery.c

@@ -1,6 +1,6 @@
-#include <math.h>
+#include "Battery.h"
 
-#include "BatteryMeter.h"
+#include <math.h>
 
 void Battery_getData(double* level, ACPresence* isOnAC) {
    *level = NAN;

unsupported/Battery.h

@@ -1,6 +1,8 @@
 #ifndef HEADER_Battery
 #define HEADER_Battery
 
+#include "BatteryMeter.h"
+
 void Battery_getData(double* level, ACPresence* isOnAC);
 
 #endif