Fix conditional compilation

include/kernaux/arch/x86.h

@@ -30,21 +30,21 @@ void kernaux_arch_x86_write_cr4(volatile unsigned long value);
 unsigned char kernaux_arch_x86_inportb(const unsigned short port)
 {
     register unsigned char result;
-    asm volatile("inb %1, %0" : "=a" (result) : "dN" (port));
+    __asm__ volatile("inb %1, %0" : "=a" (result) : "dN" (port));
     return result;
 }
 
 unsigned short kernaux_arch_x86_inportw(const unsigned short port)
 {
     register unsigned short result;
-    asm volatile("inw %1, %0" : "=a" (result) : "dN" (port));
+    __asm__ volatile("inw %1, %0" : "=a" (result) : "dN" (port));
     return result;
 }
 
 unsigned int kernaux_arch_x86_inportd(const unsigned short port)
 {
     register unsigned int result;
-    asm volatile("ind %1, %0" : "=a" (result) : "dN" (port));
+    __asm__ volatile("ind %1, %0" : "=a" (result) : "dN" (port));
     return result;
 }
 
@@ -52,21 +52,21 @@ void kernaux_arch_x86_outportb(
     const unsigned short port,
     const unsigned char value
 ) {
-    asm volatile("outb %1, %0" : : "dN" (port), "a" (value));
+    __asm__ volatile("outb %1, %0" : : "dN" (port), "a" (value));
 }
 
 void kernaux_arch_x86_outportw(
     const unsigned short port,
     const unsigned short value
 ) {
-    asm volatile("outw %1, %0" : : "dN" (port), "a" (value));
+    __asm__ volatile("outw %1, %0" : : "dN" (port), "a" (value));
 }
 
 void kernaux_arch_x86_outportd(
     const unsigned short port,
     const unsigned int value
 ) {
-    asm volatile("outd %1, %0" : : "dN" (port), "a" (value));
+    __asm__ volatile("outd %1, %0" : : "dN" (port), "a" (value));
 }
 
 #ifdef __cplusplus

src/arch/x86.S

@@ -1,3 +1,5 @@
+#include "../config.h"
+
 .global kernaux_arch_x86_hang
 .global kernaux_arch_x86_read_cr0
 .global kernaux_arch_x86_read_cr4

src/console.c

@@ -1,3 +1,5 @@
+#include "config.h"
+
 #ifdef ARCH_X86
 #include <kernaux/arch/x86.h>
 #endif

src/multiboot2/helpers.c

@@ -1,3 +1,5 @@
+#include "../config.h"
+
 #include <kernaux/multiboot2.h>
 
 const struct KernAux_Multiboot2_TagBase *KernAux_Multiboot2_first_tag_with_type(

src/multiboot2/is_valid.c

@@ -1,3 +1,5 @@
+#include "../config.h"
+
 #include <kernaux/multiboot2.h>
 
 kernaux_bool KernAux_Multiboot2_is_valid(

src/multiboot2/print.c

@@ -1,3 +1,5 @@
+#include "../config.h"
+
 #include <kernaux/multiboot2.h>
 
 static const char *KernAux_Multiboot2_TagType_to_str(

src/pfa.c

@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include <kernaux/pfa.h>
 
 kernaux_bool KernAux_PFA_initialize_start(

src/stdlib.c

@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include <kernaux/stdlib.h>
 
 void kernaux_memset(