resolve implicit declarations and enforce warnings as errors

include/battle.h

@@ -1,3 +1,6 @@
+#include GUARD_BATTLE_H
+#define GUARD_BATTLE_H
+
 #define BATTLE_TYPE_DOUBLE          0x0001
 #define BATTLE_TYPE_LINK            0x0002
 #define BATTLE_TYPE_WILD            0x0004
@@ -21,4 +24,6 @@
 #define AI_ACTION_UNK5          0x0010
 #define AI_ACTION_UNK6          0x0020
 #define AI_ACTION_UNK7          0x0040
-#define AI_ACTION_UNK8          0x0080
+#define AI_ACTION_UNK8          0x0080
+
+#endif

include/dma3.h

@@ -0,0 +1,23 @@
+#ifndef GUARD_DMA3_H
+#define GUARD_DMA3_H
+
+extern u8 gDma3ManagerLocked;
+extern u8 gDma3RequestCursor;
+
+struct DmaRequestsStruct
+{
+ /* 0x00 */ u8 *src;
+ /* 0x04 */ u8 *dest;
+ /* 0x08 */ u16 size;
+ /* 0x0A */ u16 mode;
+ /* 0x0C */ u32 value;
+};
+
+extern struct DmaRequestsStruct gDma3Requests[128];
+
+void ClearDma3Requests(void);
+void ProcessDma3Requests(void);
+int RequestDma3Copy(void *src, void *dest, u16 size, u8 mode);
+int RequestDma3Fill(s32 value, void *dest, u16 size, u8 mode);
+
+#endif

include/m4a.h

@@ -0,0 +1,18 @@
+#ifndef GUARD_M4A_H
+#define GUARD_M4A_H
+
+#include "gba/m4a_internal.h"
+
+void m4aSoundVSync(void);
+
+void m4aSoundInit(void);
+void m4aSoundMain(void);
+void m4aSongNumStart(u16);
+void m4aSongNumStop(u16 n);
+void m4aMPlayContinue(struct MusicPlayerInfo *mplayInfo);
+void m4aMPlayFadeOut(struct MusicPlayerInfo *mplayInfo, u16 speed);
+void m4aMPlayFadeOutTemporarily(struct MusicPlayerInfo *mplayInfo, u16 speed);
+void m4aMPlayFadeIn(struct MusicPlayerInfo *mplayInfo, u16 speed);
+void m4aMPlayImmInit(struct MusicPlayerInfo *mplayInfo);
+
+#endif //GUARD_M4A_H

include/rtc.h

@@ -0,0 +1,48 @@
+#ifndef GUARD_RTC_UTIL_H
+#define GUARD_RTC_UTIL_H
+
+#include "siirtc.h"
+
+#define RTC_INIT_ERROR         0x0001
+#define RTC_INIT_WARNING       0x0002
+
+#define RTC_ERR_12HOUR_CLOCK   0x0010
+#define RTC_ERR_POWER_FAILURE  0x0020
+#define RTC_ERR_INVALID_YEAR   0x0040
+#define RTC_ERR_INVALID_MONTH  0x0080
+#define RTC_ERR_INVALID_DAY    0x0100
+#define RTC_ERR_INVALID_HOUR   0x0200
+#define RTC_ERR_INVALID_MINUTE 0x0400
+#define RTC_ERR_INVALID_SECOND 0x0800
+
+#define RTC_ERR_FLAG_MASK      0x0FF0
+
+extern struct Time gLocalTime;
+
+void RtcDisableInterrupts(void);
+void RtcRestoreInterrupts(void);
+u32 ConvertBcdToBinary(u8 bcd);
+bool8 IsLeapYear(u8 year);
+u16 ConvertDateToDayCount(u8 year, u8 month, u8 day);
+u16 RtcGetDayCount(struct SiiRtcInfo *rtc);
+void RtcInit(void);
+u16 RtcGetErrorStatus(void);
+void RtcGetInfo(struct SiiRtcInfo *rtc);
+void RtcGetDateTime(struct SiiRtcInfo *rtc);
+void RtcGetStatus(struct SiiRtcInfo *rtc);
+void RtcGetRawInfo(struct SiiRtcInfo *rtc);
+u16 RtcCheckInfo(struct SiiRtcInfo *rtc);
+void RtcReset(void);
+void FormatDecimalTime(u8 *dest, s32 hour, s32 minute, s32 second);
+void FormatHexTime(u8 *dest, s32 hour, s32 minute, s32 second);
+void FormatHexRtcTime(u8 *dest);
+void FormatDecimalDate(u8 *dest, s32 year, s32 month, s32 day);
+void FormatHexDate(u8 *dest, s32 year, s32 month, s32 day);
+void RtcCalcTimeDifference(struct SiiRtcInfo *rtc, struct Time *result, struct Time *t);
+void RtcCalcLocalTime(void);
+void RtcInitLocalTimeOffset(s32 hour, s32 minute);
+void RtcCalcLocalTimeOffset(s32 days, s32 hours, s32 minutes, s32 seconds);
+void CalcTimeDifference(struct Time *result, struct Time *t1, struct Time *t2);
+u32 RtcGetMinuteCount(void);
+
+#endif // GUARD_RTC_UTIL_H