Reorder "extern C" statements

include/kernaux/cmdline.h

@@ -1,16 +1,16 @@
 #ifndef KERNAUX_INCLUDED_CMDLINE
 #define KERNAUX_INCLUDED_CMDLINE 1
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdbool.h>
 
 #define KERNAUX_CMDLINE_ERROR_MSG_SIZE_MAX 256
 #define KERNAUX_CMDLINE_ERROR_MSG_SLEN_MAX \
   (KERNAUX_CMDLINE_ERROR_MSG_SIZE_MAX - 1)
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 bool kernaux_cmdline_parse(
     const char *cmdline,
     char *error_msg,

include/kernaux/elf.h

@@ -1,12 +1,12 @@
 #ifndef KERNAUX_INCLUDED_ELF
 #define KERNAUX_INCLUDED_ELF 1
 
-#include <stdbool.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include <stdbool.h>
+
 struct KernAux_ELF_Header {
     unsigned char  magic_0x7F     : 8;
     unsigned char  magic_E        : 8;

include/kernaux/multiboot2.h

@@ -1,14 +1,14 @@
 #ifndef KERNAUX_INCLUDED_MULTIBOOT2
 #define KERNAUX_INCLUDED_MULTIBOOT2 1
 
-#include <stdbool.h>
-
-#define KERNAUX_MULTIBOOT2_MAGIC 0x36d76289
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include <stdbool.h>
+
+#define KERNAUX_MULTIBOOT2_MAGIC 0x36d76289
+
 /****************
  * Common types *
  ****************/

include/kernaux/pfa.h

@@ -1,15 +1,15 @@
 #ifndef KERNAUX_INCLUDED_PFA
 #define KERNAUX_INCLUDED_PFA 1
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdbool.h>
 
 #define KERNAUX_PFA_PAGE_SIZE (4 * 1024)
 #define KERNAUX_PFA_PAGES_COUNT_MAX (1024 * 1024)
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 struct KernAux_PFA {
     bool pages[KERNAUX_PFA_PAGES_COUNT_MAX];
 };

include/kernaux/printf.h

@@ -1,12 +1,12 @@
 #ifndef KERNAUX_INCLUDED_PRINTF
 #define KERNAUX_INCLUDED_PRINTF 1
 
-#include <stdarg.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include <stdarg.h>
+
 void kernaux_printf(void (*putchar)(char), const char *format, ...)
 __attribute__((format(printf, 2, 3)));
 void kernaux_printf_va(void (*putchar)(char), const char *format, va_list va);

include/kernaux/stdlib.h

@@ -1,12 +1,12 @@
 #ifndef KERNAUX_INCLUDED_STDLIB
 #define KERNAUX_INCLUDED_STDLIB 1
 
-#include <stddef.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include <stddef.h>
+
 void *kernaux_memset(void *buffer, int value, size_t size)
 __attribute__((nonnull));
 

include/kernaux/units.h

@@ -1,13 +1,13 @@
 #ifndef KERNAUX_INCLUDED_UNITS
 #define KERNAUX_INCLUDED_UNITS
 
-#include <stdbool.h>
-#include <stddef.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include <stdbool.h>
+#include <stddef.h>
+
 enum KernAux_Unit {
     KERNAUX_UNIT_BIT,
     KERNAUX_UNIT_BYTE,