3 files changed, 3 insertions, 15 deletions
diff --git a/libc/sysdeps/linux/nios2/bits/fcntl.h b/libc/sysdeps/linux/nios2/bits/fcntl.h
index cb86c8a90..52aed58b9 100644
--- a/libc/sysdeps/linux/nios2/bits/fcntl.h
+++ b/libc/sysdeps/linux/nios2/bits/fcntl.h
@@ -185,8 +185,7 @@ struct flock64
 #endif
 
 
-#ifdef __USE_GNU
-#if 0
+#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
 /* Flags for SYNC_FILE_RANGE.  */
 # define SYNC_FILE_RANGE_WAIT_BEFORE	1 /* Wait upon writeout of all pages
 					     in the range before performing the
@@ -197,7 +196,6 @@ struct flock64
 # define SYNC_FILE_RANGE_WAIT_AFTER	4 /* Wait upon writeout of all pages in
 					     the range after performing the
 					     write.  */
-#endif
 
 /* Flags for SPLICE and VMSPLICE.  */
 # define SPLICE_F_MOVE		1	/* Move pages instead of copying.  */
@@ -210,18 +208,16 @@ struct flock64
 
 __BEGIN_DECLS
 
-#ifdef __USE_GNU
+#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
 
 /* Provide kernel hint to read ahead.  */
 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
     __THROW;
 
 
-#if 0
 /* Selective file content synch'ing.  */
 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
 			    unsigned int __flags);
-#endif
 
 /* Splice address range into a pipe.  */
 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
diff --git a/libc/sysdeps/linux/nios2/bits/mathdef.h b/libc/sysdeps/linux/nios2/bits/mathdef.h
index e013e74b7..22722e37a 100644
--- a/libc/sysdeps/linux/nios2/bits/mathdef.h
+++ b/libc/sysdeps/linux/nios2/bits/mathdef.h
@@ -34,11 +34,3 @@ typedef double double_t;	/* `double' expressions are evaluated as
 # define FP_ILOGBNAN	(2147483647)
 
 #endif	/* ISO C99 */
-
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
-/* XXX The FPA does support this but the patterns in GCC are currently
-   turned off.  */
-# define __NO_LONG_DOUBLE_MATH	1
-#endif
diff --git a/libc/sysdeps/linux/nios2/brk.c b/libc/sysdeps/linux/nios2/brk.c
index 0420798bc..6f69932a3 100644
--- a/libc/sysdeps/linux/nios2/brk.c
+++ b/libc/sysdeps/linux/nios2/brk.c
@@ -24,7 +24,7 @@
 /* This must be initialized data because commons can't have aliases.  */
 void *__curbrk attribute_hidden = 0;
 
-libc_hidden_proto(brk)
+/* libc_hidden_proto(brk) */
 int brk (void *addr)
 {
     void *newbrk;