linking/hello: fixup Makefiles

It is good to have Makefile and autotool versions for compare. But
the Makefiles should not be intentially horrible. Clean them up to
the level that we teach in the training.

Signed-off-by: John Ogness <john.ogness@linutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/schulung_tools/linking/hello/func.h b/schulung_tools/linking/hello/func.h
new file mode 100644
index 0000000..cefd769
--- /dev/null
+++ b/schulung_tools/linking/hello/func.h
@@ -0,0 +1,7 @@
+#ifndef FUNC_H
+#define FUNC_H
+
+extern void func1(void);
+extern void func2(void);
+
+#endif /* FUNC_H */