add SharedObject and SharedLibrary builders - close #8

build_tests/shared_library/src/lib/one.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+void one(void)
+{
+    printf("Hi from one()\n");
+}

build_tests/shared_library/src/lib/one.h

@@ -0,0 +1,5 @@
+#ifndef ONE_H
+
+void one(void);
+
+#endif

build_tests/shared_library/src/lib/two.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+void two(void)
+{
+    printf("Hi from two()\n");
+}

build_tests/shared_library/src/lib/two.h

@@ -0,0 +1,5 @@
+#ifndef TWO_H
+
+void two(void);
+
+#endif