diff -up svgalib-1.9.25/src/lrmi.6.c~ svgalib-1.9.25/src/lrmi.6.c
--- svgalib-1.9.25/src/lrmi.6.c~	2008-05-31 15:58:26.000000000 +0200
+++ svgalib-1.9.25/src/lrmi.6.c	2008-05-31 15:58:26.000000000 +0200
@@ -169,6 +169,13 @@ LRMI_free_real(void *m)
 		}
 	}
 
+#ifndef TF_MASK
+#define TF_MASK X86_EFLAGS_TF
+#define IF_MASK X86_EFLAGS_IF
+#define IOPL_MASK X86_EFLAGS_IOPL
+#define VIF_MASK X86_EFLAGS_VIF
+#define VIP_MASK X86_EFLAGS_VIP
+#endif
 
 #define DEFAULT_VM86_FLAGS 	(IF_MASK | IOPL_MASK)
 #define DEFAULT_STACK_SIZE 	0x1000
diff -up svgalib-1.9.25/src/lrmi.9.c~ svgalib-1.9.25/src/lrmi.9.c
--- svgalib-1.9.25/src/lrmi.9.c~	2008-05-31 15:58:25.000000000 +0200
+++ svgalib-1.9.25/src/lrmi.9.c	2008-05-31 15:58:25.000000000 +0200
@@ -206,6 +206,13 @@ LRMI_free_real(void *m)
 
 
 #if defined(__linux__)
+#ifndef TF_MASK
+#define TF_MASK X86_EFLAGS_TF
+#define IF_MASK X86_EFLAGS_IF
+#define IOPL_MASK X86_EFLAGS_IOPL
+#define VIF_MASK X86_EFLAGS_VIF
+#define VIP_MASK X86_EFLAGS_VIP
+#endif
 #define DEFAULT_VM86_FLAGS 	(IF_MASK | IOPL_MASK)
 #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
 #define DEFAULT_VM86_FLAGS  (PSL_I | PSL_IOPL)
diff -up svgalib-1.9.25/lrmi-0.6m/lrmi.c~ svgalib-1.9.25/lrmi-0.6m/lrmi.c
--- svgalib-1.9.25/lrmi-0.6m/lrmi.c~	2008-05-31 16:10:14.000000000 +0200
+++ svgalib-1.9.25/lrmi-0.6m/lrmi.c	2008-05-31 16:10:14.000000000 +0200
@@ -170,6 +170,14 @@ LRMI_free_real(void *m)
 	}
 
 
+#ifndef TF_MASK
+#define TF_MASK X86_EFLAGS_TF
+#define IF_MASK X86_EFLAGS_IF
+#define IOPL_MASK X86_EFLAGS_IOPL
+#define VIF_MASK X86_EFLAGS_VIF
+#define VIP_MASK X86_EFLAGS_VIP
+#endif
+
 #define DEFAULT_VM86_FLAGS 	(IF_MASK | IOPL_MASK)
 #define DEFAULT_STACK_SIZE 	0x1000
 #define RETURN_TO_32_INT 	255
diff -up svgalib-1.9.25/lrmi-0.9/lrmi.c~ svgalib-1.9.25/lrmi-0.9/lrmi.c
--- svgalib-1.9.25/lrmi-0.9/lrmi.c~	2008-05-31 16:10:28.000000000 +0200
+++ svgalib-1.9.25/lrmi-0.9/lrmi.c	2008-05-31 16:10:28.000000000 +0200
@@ -203,6 +203,13 @@ LRMI_free_real(void *m)
 
 
 #if defined(__linux__)
+#ifndef TF_MASK
+#define TF_MASK X86_EFLAGS_TF
+#define IF_MASK X86_EFLAGS_IF
+#define IOPL_MASK X86_EFLAGS_IOPL
+#define VIF_MASK X86_EFLAGS_VIF
+#define VIP_MASK X86_EFLAGS_VIP
+#endif
 #define DEFAULT_VM86_FLAGS 	(IF_MASK | IOPL_MASK)
 #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
 #define DEFAULT_VM86_FLAGS  (PSL_I | PSL_IOPL)