[newlib-cygwin] Let RTEMS provide clock()

[Sebastian Huber <sh@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=f9205f1d470ed1a214b841b6d2fd60fea14954cb

commit f9205f1d470ed1a214b841b6d2fd60fea14954cb
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Wed Sep 6 08:43:26 2017 +0200

    Let RTEMS provide clock()
    
    Newlib uses _times_r() in clock().  The problem is that the _times_r()
    clock frequency is defined by sysconf(_SC_CLK_TCK).  The clock frequency
    of clock() is the constant CLOCKS_PER_SEC.
    
    FreeBSD uses getrusage() for clock().  Since RTEMS has only one process,
    the implementation can be simplified.
    
    Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

Diff:
---
 newlib/configure.host | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/newlib/configure.host b/newlib/configure.host
index 3d967a1..ba2d8c6 100644
--- a/newlib/configure.host
+++ b/newlib/configure.host
@@ -605,7 +605,7 @@ case "${host}" in
 	default_newlib_io_long_long="yes"
 	default_newlib_io_c99_formats="yes"
 	newlib_cflags="${newlib_cflags} -D_COMPILING_NEWLIB"
-	newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_BLKSIZE -DHAVE_FCNTL -DHAVE_ASSERT_FUNC"
+	newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DEXIT_PROVIDED -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_BLKSIZE -DHAVE_FCNTL -DHAVE_ASSERT_FUNC"
         # turn off unsupported items in posix directory 
 	newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN -D_NO_POSIX_SPAWN"
         # turn off using cli/sti in i386 setjmp/longjmp