diff --git a/arch/arm/bits/syscall.h b/arch/arm/bits/syscall.h
index 9932c9e5..c5e25b76 100644
--- a/arch/arm/bits/syscall.h
+++ b/arch/arm/bits/syscall.h
@@ -7,37 +7,37 @@
 
 long (__syscall)(long, ...);
 
-static inline long __syscall0(long n)
+static __inline long __syscall0(long n)
 {
 	return (__syscall)(n);
 }
 
-static inline long __syscall1(long n, long a)
+static __inline long __syscall1(long n, long a)
 {
 	return (__syscall)(n, a);
 }
 
-static inline long __syscall2(long n, long a, long b)
+static __inline long __syscall2(long n, long a, long b)
 {
 	return (__syscall)(n, a, b);
 }
 
-static inline long __syscall3(long n, long a, long b, long c)
+static __inline long __syscall3(long n, long a, long b, long c)
 {
 	return (__syscall)(n, a, b, c);
 }
 
-static inline long __syscall4(long n, long a, long b, long c, long d)
+static __inline long __syscall4(long n, long a, long b, long c, long d)
 {
 	return (__syscall)(n, a, b, c, d);
 }
 
-static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+static __inline long __syscall5(long n, long a, long b, long c, long d, long e)
 {
 	return (__syscall)(n, a, b, c, d, e);
 }
 
-static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+static __inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 {
 	return (__syscall)(n, a, b, c, d, e, f);
 }
diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h
index 4b574e99..77c7f118 100644
--- a/arch/i386/bits/syscall.h
+++ b/arch/i386/bits/syscall.h
@@ -5,7 +5,7 @@
 
 #define __SYSCALL_SSLEN 8
 
-static inline long __syscall0(long __n)
+static __inline long __syscall0(long __n)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n) : "memory");
@@ -14,42 +14,42 @@ static inline long __syscall0(long __n)
 
 #ifndef __PIC__
 
-static inline long __syscall1(long __n, long __a1)
+static __inline long __syscall1(long __n, long __a1)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n), "b"(__a1) : "memory");
 	return __ret;
 }
 
-static inline long __syscall2(long __n, long __a1, long __a2)
+static __inline long __syscall2(long __n, long __a1, long __a2)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n), "b"(__a1), "c"(__a2) : "memory");
 	return __ret;
 }
 
-static inline long __syscall3(long __n, long __a1, long __a2, long __a3)
+static __inline long __syscall3(long __n, long __a1, long __a2, long __a3)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n), "b"(__a1), "c"(__a2), "d"(__a3) : "memory");
 	return __ret;
 }
 
-static inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
+static __inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n), "b"(__a1), "c"(__a2), "d"(__a3), "S"(__a4) : "memory");
 	return __ret;
 }
 
-static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
+static __inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(__n), "b"(__a1), "c"(__a2), "d"(__a3), "S"(__a4), "D"(__a5) : "memory");
 	return __ret;
 }
 
-static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
+static __inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("pushl %7 ; pushl %%ebp ; mov 4(%%esp),%%ebp ; int $128 ; popl %%ebp ; popl %%ecx"
@@ -59,7 +59,7 @@ static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __
 
 #else
 
-static inline long __syscall1(long __n, long __a1)
+static __inline long __syscall1(long __n, long __a1)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
@@ -67,7 +67,7 @@ static inline long __syscall1(long __n, long __a1)
 	return __ret;
 }
 
-static inline long __syscall2(long __n, long __a1, long __a2)
+static __inline long __syscall2(long __n, long __a1, long __a2)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
@@ -75,7 +75,7 @@ static inline long __syscall2(long __n, long __a1, long __a2)
 	return __ret;
 }
 
-static inline long __syscall3(long __n, long __a1, long __a2, long __a3)
+static __inline long __syscall3(long __n, long __a1, long __a2, long __a3)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
@@ -83,7 +83,7 @@ static inline long __syscall3(long __n, long __a1, long __a2, long __a3)
 	return __ret;
 }
 
-static inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
+static __inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx"
@@ -92,7 +92,7 @@ static inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __
 }
 
 #if 0
-static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
+static __inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("pushl %2 ; pushl %%ebx ; mov 4(%%esp),%%ebx ; int $128 ; popl %%ebx ; popl %%ecx"
@@ -100,13 +100,13 @@ static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __
 	return __ret;
 }
 #else
-static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
+static __inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
 {
 	return (__syscall)(__n, __a1, __a2, __a3, __a4, __a5);
 }
 #endif
 
-static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
+static __inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
 {
 	return (__syscall)(__n, __a1, __a2, __a3, __a4, __a5, __a6);
 }
diff --git a/arch/mips/bits/syscall.h b/arch/mips/bits/syscall.h
index 6c51bab9..9a2de2e3 100644
--- a/arch/mips/bits/syscall.h
+++ b/arch/mips/bits/syscall.h
@@ -7,37 +7,37 @@
 
 long (__syscall)(long, ...);
 
-static inline long __syscall0(long n)
+static __inline long __syscall0(long n)
 {
 	return (__syscall)(n);
 }
 
-static inline long __syscall1(long n, long a)
+static __inline long __syscall1(long n, long a)
 {
 	return (__syscall)(n, a);
 }
 
-static inline long __syscall2(long n, long a, long b)
+static __inline long __syscall2(long n, long a, long b)
 {
 	return (__syscall)(n, a, b);
 }
 
-static inline long __syscall3(long n, long a, long b, long c)
+static __inline long __syscall3(long n, long a, long b, long c)
 {
 	return (__syscall)(n, a, b, c);
 }
 
-static inline long __syscall4(long n, long a, long b, long c, long d)
+static __inline long __syscall4(long n, long a, long b, long c, long d)
 {
 	return (__syscall)(n, a, b, c, d);
 }
 
-static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+static __inline long __syscall5(long n, long a, long b, long c, long d, long e)
 {
 	return (__syscall)(n, a, b, c, d, e);
 }
 
-static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+static __inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 {
 	return (__syscall)(n, a, b, c, d, e, f);
 }
diff --git a/arch/x86_64/bits/syscall.h b/arch/x86_64/bits/syscall.h
index 567cfcb7..217515f3 100644
--- a/arch/x86_64/bits/syscall.h
+++ b/arch/x86_64/bits/syscall.h
@@ -3,21 +3,21 @@
 
 #define __SYSCALL_SSLEN 8
 
-static inline long __syscall0(long __n)
+static __inline long __syscall0(long __n)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("syscall" : "=a"(__ret) : "a"(__n) : "rcx", "r11", "memory");
 	return __ret;
 }
 
-static inline long __syscall1(long __n, long __a1)
+static __inline long __syscall1(long __n, long __a1)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("syscall" : "=a"(__ret) : "a"(__n), "D"(__a1) : "rcx", "r11", "memory");
 	return __ret;
 }
 
-static inline long __syscall2(long __n, long __a1, long __a2)
+static __inline long __syscall2(long __n, long __a1, long __a2)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("syscall" : "=a"(__ret) : "a"(__n), "D"(__a1), "S"(__a2)
@@ -25,7 +25,7 @@ static inline long __syscall2(long __n, long __a1, long __a2)
 	return __ret;
 }
 
-static inline long __syscall3(long __n, long __a1, long __a2, long __a3)
+static __inline long __syscall3(long __n, long __a1, long __a2, long __a3)
 {
 	unsigned long __ret;
 	__asm__ __volatile__ ("syscall" : "=a"(__ret) : "a"(__n), "D"(__a1), "S"(__a2),
@@ -33,7 +33,7 @@ static inline long __syscall3(long __n, long __a1, long __a2, long __a3)
 	return __ret;
 }
 
-static inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
+static __inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __a4)
 {
 	unsigned long __ret;
 	register long __r10 __asm__("r10") = __a4;
@@ -42,7 +42,7 @@ static inline long __syscall4(long __n, long __a1, long __a2, long __a3, long __
 	return __ret;
 }
 
-static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
+static __inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __a4, long __a5)
 {
 	unsigned long __ret;
 	register long __r10 __asm__("r10") = __a4;
@@ -52,7 +52,7 @@ static inline long __syscall5(long __n, long __a1, long __a2, long __a3, long __
 	return __ret;
 }
 
-static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
+static __inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __a4, long __a5, long __a6)
 {
 	unsigned long __ret;
 	register long __r10 __asm__("r10") = __a4;
diff --git a/include/byteswap.h b/include/byteswap.h
index 8689cd57..bf222d3c 100644
--- a/include/byteswap.h
+++ b/include/byteswap.h
@@ -3,26 +3,21 @@
 
 #include <stdint.h>
 
-#if __STDC_VERSION__ >= 199901L
-inline
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
 #endif
-static uint16_t __bswap_16(uint16_t __x)
+
+static __inline uint16_t __bswap_16(uint16_t __x)
 {
 	return __x<<8 | __x>>8;
 }
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static uint32_t __bswap_32(uint32_t __x)
+static __inline uint32_t __bswap_32(uint32_t __x)
 {
 	return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
 }
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static uint64_t __bswap_64(uint64_t __x)
+static __inline uint64_t __bswap_64(uint64_t __x)
 {
 	return __bswap_32(__x)+0ULL<<32 | __bswap_32(__x>>32);
 }
diff --git a/include/endian.h b/include/endian.h
index 41ca1711..528cef31 100644
--- a/include/endian.h
+++ b/include/endian.h
@@ -1,6 +1,10 @@
 #ifndef _ENDIAN_H
 #define _ENDIAN_H
 
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
+#endif
+
 #define __LITTLE_ENDIAN 1234
 #define __BIG_ENDIAN 4321
 #define __PDP_ENDIAN 3412
@@ -20,26 +24,17 @@
 
 #include <stdint.h>
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static uint16_t __bswap16(uint16_t __x)
+static __inline uint16_t __bswap16(uint16_t __x)
 {
 	return __x<<8 | __x>>8;
 }
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static uint32_t __bswap32(uint32_t __x)
+static __inline uint32_t __bswap32(uint32_t __x)
 {
 	return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
 }
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static uint64_t __bswap64(uint64_t __x)
+static __inline uint64_t __bswap64(uint64_t __x)
 {
 	return __bswap32(__x)+0ULL<<32 | __bswap32(__x>>32);
 }
diff --git a/include/math.h b/include/math.h
index 2fdcb7b4..f808be62 100644
--- a/include/math.h
+++ b/include/math.h
@@ -5,6 +5,10 @@
 extern "C" {
 #endif
 
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
+#endif
+
 #define __NEED_float_t
 #define __NEED_double_t
 #define __NEED___uint16_t
@@ -83,10 +87,7 @@ int __signbitl(long double);
 
 #define isunordered(x,y) (isnan((x)) ? ((void)(y),1) : isnan((y)))
 
-#if __STDC_VERSION__ >= 199901L
-inline
-#endif
-static int __isrel(long double __x, long double __y, int __rel)
+static __inline int __isrel(long double __x, long double __y, int __rel)
 {
 	if (isunordered(__x, __y)) return 0;
 	if (__rel==-2) return __x < __y;
diff --git a/include/sys/syscall.h b/include/sys/syscall.h
index 901941aa..154e5ab5 100644
--- a/include/sys/syscall.h
+++ b/include/sys/syscall.h
@@ -4,6 +4,10 @@
 extern "C" {
 #endif
 
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
+#endif
+
 long __syscall_ret(unsigned long);
 long __syscall(long, ...);
 long syscall(long, ...);