Fix errno.h, add -no-pie to tests Makefile

include/bits/errno.h

+#ifndef _BITS_ERRNO_H
+#define _BITS_ERRNO_H
+
+extern __thread int errno;
+
+#endif /* _BITS_ERRNO_H */

include/errno.h

-extern __thread int errno;

src/errno/cbindgen.toml

-sys_includes = []
+sys_includes = ["bits/errno.h"]
 include_guard = "_ERRNO_H"
 language = "C"
 

src/errno/src/lib.rs

@@ -4,6 +4,7 @@
 
 extern crate platform;
 
+#[repr(C)]
 pub enum Errno {
     // Argument list too long
     E2BIG = 1,

tests/Makefile

@@ -37,4 +37,4 @@ GCCTAIL=\
 	../openlibm/libopenlibm.a
 
 %: %.c
-	gcc -fno-stack-protector -Wall $(GCCHEAD) "$<" $(GCCTAIL) -o "$@"
+	gcc -no-pie -fno-stack-protector -Wall $(GCCHEAD) "$<" $(GCCTAIL) -o "$@"