build/SDKs: Sketch a minimal stub SDK for Darwin.
- Motivation is explained in the README, but basically it is convenient to be
able to build compiler-rt free standing. Since our external dependencies are
so small, we can achieve this relatively easily by just stubbing out the
declarations of the external dependencies.
- This is in no way, shape, or form intended to be complete, it is just the
minimal stubs necessary to support the stuff we use.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144843 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/SDKs/darwin/usr/include/stdlib.h b/SDKs/darwin/usr/include/stdlib.h
new file mode 100644
index 0000000..cf65df4
--- /dev/null
+++ b/SDKs/darwin/usr/include/stdlib.h
@@ -0,0 +1,29 @@
+/* ===-- stdlib.h - stub SDK header for compiler-rt -------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===-----------------------------------------------------------------------===
+ *
+ * This is a stub SDK header file. This file is not part of the interface of
+ * this library nor an official version of the appropriate SDK header. It is
+ * intended only to stub the features of this header required by compiler-rt.
+ *
+ * ===-----------------------------------------------------------------------===
+ */
+
+#ifndef __STDLIB_H__
+#define __STDLIB_H__
+
+#define NULL ((void *)0)
+
+typedef __SIZE_TYPE__ size_t;
+
+void abort(void) __attribute__((__noreturn__));
+void free(void *);
+char *getenv(const char *);
+void *malloc(size_t);
+
+#endif /* __STDLIB_H__ */