avoid "inline" in public headers for strict c89 compatibility

while musl itself requires a c99 compiler, some applications insist on
being compiled with c89 compilers, and use of "inline" in the headers
was breaking them. much of this had been avoided already by just
skipping the inline keyword in pre-c99 compilers or modes, but this
new unified solution is cleaner and may/should result in better code
generation in the default gcc configuration.

8 files changed, 57 insertions, 62 deletions

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, ...);