Define feature test macros in common.h
This enables necessary functions once for all. As a consequence, define common.h before any other header.
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@@ -1,12 +1,12 @@
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#ifndef DEVICEMSG_H
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#define DEVICEMSG_H
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#include "common.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include <unistd.h>
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#include "common.h"
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#define DEVICE_MSG_MAX_SIZE (1 << 18) // 256k
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// type: 1 byte; length: 4 bytes
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#define DEVICE_MSG_TEXT_MAX_LENGTH (DEVICE_MSG_MAX_SIZE - 5)
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