add newlib compiler depend

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1742 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/libc/newlib/SConscript

@@ -1,8 +1,17 @@
-Import('RTT_ROOT')
-from building import *
-
-src	= Glob('*.c')
-CPPPATH = [RTT_ROOT + '/components/libc/newlib']
-group = DefineGroup('newlib', src, depend = ['RT_USING_NEWLIB'], CPPPATH = CPPPATH)
-
-Return('group')
+Import('rtconfig')
+
+from building import *
+
+if rtconfig.CROSS_TOOL != 'gcc':
+    print '================ERROR============================'
+    print 'Please use GNU GCC compiler if using newlib'
+    print '================================================='
+    exit(0)
+
+cwd = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('newlib', src, depend = ['RT_USING_NEWLIB'], CPPPATH = CPPPATH)
+
+Return('group')

components/libc/newlib/libc.c

@@ -1,32 +1,32 @@
-#include <rtthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/time.h>
-#include "libc.h"
-
-void libc_system_init(const char* tty_name)
-{
-	int fd;
-	extern int pthread_system_init(void);
-
-#ifndef RT_USING_DFS_DEVFS
-#error Please enable devfs by defining RT_USING_DFS_DEVFS in rtconfig.h
-#endif
-
-	/* init console device */
-	rt_console_init(tty_name);
-
-	/* open console as stdin/stdout/stderr */
-	fd = open("/dev/console", O_RDONLY, 0);	/* for stdin */
-	fd = open("/dev/console", O_WRONLY, 0);	/* for stdout */
-	fd = open("/dev/console", O_WRONLY, 0);	/* for stderr */
-
-	/* set PATH and HOME */
-	putenv("PATH=/");
-	putenv("HOME=/");
-
-#ifdef RT_USING_PTHREADS
-	pthread_system_init();
-#endif
-}
+#include <rtthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#include "libc.h"
+
+void libc_system_init(const char* tty_name)
+{
+	int fd;
+	extern int pthread_system_init(void);
+
+#ifndef RT_USING_DFS_DEVFS
+#error Please enable devfs by defining RT_USING_DFS_DEVFS in rtconfig.h
+#endif
+
+	/* init console device */
+	rt_console_init(tty_name);
+
+	/* open console as stdin/stdout/stderr */
+	fd = open("/dev/console", O_RDONLY, 0);	/* for stdin */
+	fd = open("/dev/console", O_WRONLY, 0);	/* for stdout */
+	fd = open("/dev/console", O_WRONLY, 0);	/* for stderr */
+
+	/* set PATH and HOME */
+	putenv("PATH=/");
+	putenv("HOME=/");
+
+#ifdef RT_USING_PTHREADS
+	pthread_system_init();
+#endif
+}