commit 91b75af446b712f7f1a84d0afdf5d3f03a2377ed
Author: Christophe Lyon <christophe.lyon@linaro.org>
Date:   Mon Oct 1 21:16:40 2018 +0000

    Add forward declarations.
    
    2018-10-01  Christophe Lyon  <christophe.lyon@linaro.org>
    
    	* newlib/libc/reent/closer.c: Add _close prototype.
    	* newlib/libc/reent/execr.c: Add _execve and fork prototypes.
    	* newlib/libc/reent/fcntlr.c: Add _fcntl prototype.
    	* newlib/libc/reent/fstatr.c: Add _fstat prototype.
    	* newlib/libc/reent/gettimeofdayr.c: Add _gettimeofday prototype.
    	* newlib/libc/reent/isattyr.c: Add _isatty prototype.
    	* newlib/libc/reent/linkr.c: Add _link prototype.
    	* newlib/libc/reent/lseekr.c: Add _lseek prototype.
    	* newlib/libc/reent/mkdirr.c: Add _mkdir prototype.
    	* newlib/libc/reent/openr.c: Add _open prototype.
    	* newlib/libc/reent/readr.c: Add _read prototype.
    	* newlib/libc/reent/signalr.c: Add _kill and _getpid prototypes.
    	* newlib/libc/reent/statr.c: Add _stat prototype.
    	* newlib/libc/reent/timesr.c: Add _times prototype.
    	* newlib/libc/reent/unlinkr.c: Add _unlink prototype.
    	* newlib/libc/reent/writer.c: Add _write prototype.
    	* newlib/libc/stdlib/strtorx: Add nanl prototype.
    	* newlib/libc/syscalls/sysisatty.c: Add _isatty prototype.

diff --git a/newlib/libc/reent/closer.c b/newlib/libc/reent/closer.c
index deb34b0..1bef515 100644
--- a/newlib/libc/reent/closer.c
+++ b/newlib/libc/reent/closer.c
@@ -19,6 +19,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _close (int);
+
 /*
 FUNCTION
 	<<_close_r>>---Reentrant version of close
diff --git a/newlib/libc/reent/execr.c b/newlib/libc/reent/execr.c
index 59b6122..90201b7 100644
--- a/newlib/libc/reent/execr.c
+++ b/newlib/libc/reent/execr.c
@@ -27,6 +27,10 @@ int _dummy_exec_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declarations.  */
+int _execve(const char *filename, char *const argv[], char *const envp[]);
+int _fork();
+
 /*
 FUNCTION
 	<<_execve_r>>---Reentrant version of execve	
diff --git a/newlib/libc/reent/fcntlr.c b/newlib/libc/reent/fcntlr.c
index cd19d22..27ab74c 100644
--- a/newlib/libc/reent/fcntlr.c
+++ b/newlib/libc/reent/fcntlr.c
@@ -21,6 +21,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _fcntl (int, int, ...);
+
 /*
 FUNCTION
 	<<_fcntl_r>>---Reentrant version of fcntl
diff --git a/newlib/libc/reent/fstatr.c b/newlib/libc/reent/fstatr.c
index ec906c9..dcbaaee 100644
--- a/newlib/libc/reent/fstatr.c
+++ b/newlib/libc/reent/fstatr.c
@@ -25,6 +25,9 @@ int _dummy_fstat_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _fstat(int, struct stat *);
+
 /*
 FUNCTION
 	<<_fstat_r>>---Reentrant version of fstat
diff --git a/newlib/libc/reent/gettimeofdayr.c b/newlib/libc/reent/gettimeofdayr.c
index 9b982a9..361ee4f 100644
--- a/newlib/libc/reent/gettimeofdayr.c
+++ b/newlib/libc/reent/gettimeofdayr.c
@@ -28,6 +28,9 @@ int _dummy_gettimeofday_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _gettimeofday (struct timeval *, void *);
+
 /*
 FUNCTION
 	<<_gettimeofday_r>>---Reentrant version of gettimeofday
diff --git a/newlib/libc/reent/isattyr.c b/newlib/libc/reent/isattyr.c
index f21bf25..dcd609d 100644
--- a/newlib/libc/reent/isattyr.c
+++ b/newlib/libc/reent/isattyr.c
@@ -23,6 +23,9 @@ int _dummy_isatty_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _isatty (int);
+
 /*
 FUNCTION
 	<<_isatty_r>>---Reentrant version of isatty
diff --git a/newlib/libc/reent/linkr.c b/newlib/libc/reent/linkr.c
index b22da5f..701b8f3 100644
--- a/newlib/libc/reent/linkr.c
+++ b/newlib/libc/reent/linkr.c
@@ -24,6 +24,9 @@ int _dummy_link_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _link (const char *, const char *);
+
 /*
 FUNCTION
 	<<_link_r>>---Reentrant version of link
diff --git a/newlib/libc/reent/lseekr.c b/newlib/libc/reent/lseekr.c
index ac2daaa..d39f942 100644
--- a/newlib/libc/reent/lseekr.c
+++ b/newlib/libc/reent/lseekr.c
@@ -19,6 +19,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+_off_t _lseek (int, _off_t, int);
+
 /*
 FUNCTION
 	<<_lseek_r>>---Reentrant version of lseek
diff --git a/newlib/libc/reent/mkdirr.c b/newlib/libc/reent/mkdirr.c
index fd72df6..f0bf749 100644
--- a/newlib/libc/reent/mkdirr.c
+++ b/newlib/libc/reent/mkdirr.c
@@ -19,6 +19,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _mkdir (const char *, mode_t);
+
 /*
 FUNCTION
 	<<_mkdir_r>>---Reentrant version of mkdir
diff --git a/newlib/libc/reent/openr.c b/newlib/libc/reent/openr.c
index c6a7db5..a63de62 100644
--- a/newlib/libc/reent/openr.c
+++ b/newlib/libc/reent/openr.c
@@ -20,6 +20,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _open (const char *, int, ...);
+
 /*
 FUNCTION
 	<<_open_r>>---Reentrant version of open
diff --git a/newlib/libc/reent/readr.c b/newlib/libc/reent/readr.c
index 7fccefd..09462ef 100644
--- a/newlib/libc/reent/readr.c
+++ b/newlib/libc/reent/readr.c
@@ -19,6 +19,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _read (int, void *, size_t);
+
 /*
 FUNCTION
 	<<_read_r>>---Reentrant version of read
diff --git a/newlib/libc/reent/signalr.c b/newlib/libc/reent/signalr.c
index 345910e..217c368 100644
--- a/newlib/libc/reent/signalr.c
+++ b/newlib/libc/reent/signalr.c
@@ -25,6 +25,10 @@ int _dummy_link_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declarations.  */
+int _kill (int, int);
+int _getpid ();
+
 /*
 FUNCTION
 	<<_kill_r>>---Reentrant version of kill
diff --git a/newlib/libc/reent/statr.c b/newlib/libc/reent/statr.c
index 9388e02..f338940 100644
--- a/newlib/libc/reent/statr.c
+++ b/newlib/libc/reent/statr.c
@@ -26,6 +26,9 @@ int _dummy_stat_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _stat (const char *, struct stat *);
+
 /*
 FUNCTION
 	<<_stat_r>>---Reentrant version of stat
diff --git a/newlib/libc/reent/timesr.c b/newlib/libc/reent/timesr.c
index bb89003..ab80176 100644
--- a/newlib/libc/reent/timesr.c
+++ b/newlib/libc/reent/timesr.c
@@ -25,6 +25,9 @@ int _dummy_times_syscalls = 1;
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+clock_t _times (struct tms *);
+
 /*
 FUNCTION
 	<<_times_r>>---Reentrant version of times
diff --git a/newlib/libc/reent/unlinkr.c b/newlib/libc/reent/unlinkr.c
index 41bac01..d6fd460 100644
--- a/newlib/libc/reent/unlinkr.c
+++ b/newlib/libc/reent/unlinkr.c
@@ -20,6 +20,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _unlink (const char *);
+
 /*
 FUNCTION
 	<<_unlink_r>>---Reentrant version of unlink
diff --git a/newlib/libc/reent/writer.c b/newlib/libc/reent/writer.c
index 704aba1..ffb468d 100644
--- a/newlib/libc/reent/writer.c
+++ b/newlib/libc/reent/writer.c
@@ -19,6 +19,9 @@
 #undef errno
 extern int errno;
 
+/* Forward declaration.  */
+int _write (int, const void *, size_t);
+
 /*
 FUNCTION
 	<<_write_r>>---Reentrant version of write
diff --git a/newlib/libc/stdlib/strtorx.c b/newlib/libc/stdlib/strtorx.c
index a35dabe..fcea9f2 100644
--- a/newlib/libc/stdlib/strtorx.c
+++ b/newlib/libc/stdlib/strtorx.c
@@ -55,6 +55,9 @@ THIS SOFTWARE.
 #define _4 0
 #endif
 
+/* Forward declaration.  */
+long double nanl(const char *tagp);
+
  void
 #ifdef KR_headers
 ULtox(L, bits, exp, k) __UShort *L; __ULong *bits; Long exp; int k;
diff --git a/newlib/libc/syscalls/sysisatty.c b/newlib/libc/syscalls/sysisatty.c
index 697c54b..2672ae1 100644
--- a/newlib/libc/syscalls/sysisatty.c
+++ b/newlib/libc/syscalls/sysisatty.c
@@ -3,6 +3,9 @@
 #include <reent.h>
 #include <unistd.h>
 
+/* Forward declaration.  */
+int _isatty (int);
+
 int
 isatty (int fd)
 {