--- Src/Texts.c
+++ Src/Texts.c
@@ -17,6 +17,7 @@
  */
 
 #include <math.h>
+#include <string.h>
 
 #include "GS.h"
 #include "Texts.h"
--- Src/Linux/Conf.c
+++ Src/Linux/Conf.c
@@ -21,6 +21,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <string.h>
 
 #include "GS.h"
 
--- Src/x86/ix86_cpudetect.c
+++ Src/x86/ix86_cpudetect.c
@@ -124,16 +124,19 @@
 
    __asm__ __volatile__ (
 #ifdef __x86_64__
+#define AX "%%rax"
 	"sub $0x18, %%rsp\n"
+#else
+#define AX "%%eax"
 #endif
       "pushf\n"
-      "pop %%eax\n"
+      "pop "AX"\n"
       "mov %%eax, %%edx\n"
       "xor $0x200000, %%eax\n"
-      "push %%eax\n"
+      "push "AX"\n"
       "popf\n"
       "pushf\n"
-      "pop %%eax\n"
+      "pop "AX"\n"
       "xor %%edx, %%eax\n"
       "mov %%eax, %0\n"
 #ifdef __x86_64__