generate bindings for non-public extern items

Signed-off-by: Marin Veršić <marin.versic101@gmail.com>

tests/expectations/non_pub_extern.c

@@ -0,0 +1,12 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+extern const uint32_t FIRST;
+
+extern const uint32_t RENAMED;
+
+void first(void);
+
+void renamed(void);

tests/expectations/non_pub_extern.compat.c

@@ -0,0 +1,20 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+extern const uint32_t FIRST;
+
+extern const uint32_t RENAMED;
+
+void first(void);
+
+void renamed(void);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus

tests/expectations/non_pub_extern.cpp

@@ -0,0 +1,17 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+extern "C" {
+
+extern const uint32_t FIRST;
+
+extern const uint32_t RENAMED;
+
+void first();
+
+void renamed();
+
+} // extern "C"

tests/expectations/non_pub_extern.pyx

@@ -0,0 +1,15 @@
+from libc.stdint cimport int8_t, int16_t, int32_t, int64_t, intptr_t
+from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t
+cdef extern from *:
+  ctypedef bint bool
+  ctypedef struct va_list
+
+cdef extern from *:
+
+  extern const uint32_t FIRST;
+
+  extern const uint32_t RENAMED;
+
+  void first();
+
+  void renamed();

tests/rust/non_pub_extern.rs

@@ -0,0 +1,13 @@
+#[no_mangle]
+static FIRST: u32 = 10;
+
+#[export_name = "RENAMED"]
+static SECOND: u32 = 42;
+
+#[no_mangle]
+extern "C" fn first()
+{ }
+
+#[export_name = "renamed"]
+extern fn second()
+{ }