diff --git a/hw/xfree86/os-support/linux/lnx_axp.c b/hw/xfree86/os-support/linux/lnx_axp.c
index 8571c04..34129cc 100644
--- a/hw/xfree86/os-support/linux/lnx_axp.c
+++ b/hw/xfree86/os-support/linux/lnx_axp.c
@@ -125,12 +125,12 @@ extern unsigned int _dense_inb(unsigned long);
 extern unsigned int _dense_inw(unsigned long);
 extern unsigned int _dense_inl(unsigned long);
 
-void (*_alpha_outb)(char, unsigned long) = _outb;
-void (*_alpha_outw)(short, unsigned long) = _outw;
-void (*_alpha_outl)(int, unsigned long) = _outl;
-unsigned int (*_alpha_inb)(unsigned long) = _inb;
-unsigned int (*_alpha_inw)(unsigned long) = _inw;
-unsigned int (*_alpha_inl)(unsigned long) = _inl;
+_X_EXPORT void (*_alpha_outb)(char, unsigned long) = _outb;
+_X_EXPORT void (*_alpha_outw)(short, unsigned long) = _outw;
+_X_EXPORT void (*_alpha_outl)(int, unsigned long) = _outl;
+_X_EXPORT unsigned int (*_alpha_inb)(unsigned long) = _inb;
+_X_EXPORT unsigned int (*_alpha_inw)(unsigned long) = _inw;
+_X_EXPORT unsigned int (*_alpha_inl)(unsigned long) = _inl;
 
 static long _alpha_iobase_query(unsigned, int, int, int);
 long (*_iobase)(unsigned, int, int, int) = _alpha_iobase_query;