diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9adba1f..5374f29 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.15)
-project(FxLibc VERSION 1.4.1 LANGUAGES C ASM)
+project(FxLibc VERSION 1.4.3 LANGUAGES C ASM)
 
 set(CMAKE_INSTALL_MESSAGE LAZY)
 
@@ -259,18 +259,6 @@ if(sh-generic IN_LIST TARGET_FOLDERS)
   target_include_directories(fxlibc PRIVATE "${FXSDK_COMPILER_INSTALL}/include/openlibm")
 endif()
 
-if(FXLIBC_SHARED)
-  target_compile_options(fxlibc PRIVATE -fPIC)
-
-  if("${FXLIBC_ARCH}" STREQUAL "sh")
-    # Original command: "ar qc <TARGET> <OBJECTS>; ranlib <TARGET>"
-    set(CMAKE_C_CREATE_STATIC_LIBRARY
-      "sh-elf-ld -shared <OBJECTS> -o <TARGET>")
-  else()
-    message(SEND_ERROR "TODO: Shared vhex on non-SuperH not available yet")
-  endif()
-endif()
-
 foreach(FOLDER IN LISTS TARGET_FOLDERS)
   target_include_directories(fxlibc PRIVATE include/target/${FOLDER}/)
 endforeach()
diff --git a/include/errno.h b/include/errno.h
index 1f412f5..023b41b 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -28,6 +28,10 @@ extern int errno;
 #define ENOTEMPTY    17   /* Directory is not empty. */
 #define EINTR        18   /* Interrupted system call. */
 #define EAGAIN       19   /* Resource temporarily unavailable. */
+#define EIO          20   /* Input/Output error */
+#define ENODEV       21   /* No such device */
+#define ENOMEDIUM    22   /* No medium found */
+#define EMEDIUMTYPE  23   /* Wrong medium type */
 
 #ifdef __cplusplus
 }
diff --git a/include/target/vhex/bits/confname.h b/include/target/vhex/bits/confname.h
new file mode 100644
index 0000000..39733dc
--- /dev/null
+++ b/include/target/vhex/bits/confname.h
@@ -0,0 +1,7 @@
+#ifndef __BITS_CONFNAME_H__
+# define __BITS_CONFNAME_H__
+
+#define _SC_PAGE_SIZE	0
+#define _SC_PAGESIZE	_SC_PAGE_SIZE
+
+#endif /*__BITS_CONFNAME_H__*/
diff --git a/include/target/vhex/bits/exit.h b/include/target/vhex/bits/exit.h
new file mode 100644
index 0000000..30e4207
--- /dev/null
+++ b/include/target/vhex/bits/exit.h
@@ -0,0 +1,8 @@
+#ifndef __BITS_EXIT_H__
+# define __BITS_EXIT_H__
+
+/* Exit codes for CASIOWIN add-ins. */
+#define EXIT_SUCCESS 1
+#define EXIT_FAILURE 0
+
+#endif /*__BITS_EXIT_H__*/
diff --git a/include/target/vhex/bits/signum.h b/include/target/vhex/bits/signum.h
new file mode 100644
index 0000000..a340352
--- /dev/null
+++ b/include/target/vhex/bits/signum.h
@@ -0,0 +1,20 @@
+#ifndef __BITS_SIGNUM_H__
+# define __BITS_SIGNUM_H__
+
+// Define the number of signals
+#define _NSIG		16
+
+/* Fake signal functions. */
+#define	SIG_ERR		((__sighandler_t) -1)	/* Error return. */
+#define	SIG_DFL		((__sighandler_t)  0)	/* Default action. */
+#define	SIG_IGN		((__sighandler_t)  1)	/* Ignore signal. */
+
+/* ISO C99 signals. */
+#define	SIGINT		2	/* Interactive attention signal. */
+#define	SIGILL		4	/* Illegal instruction. */
+#define	SIGABRT		6	/* Abnormal termination. */
+#define	SIGFPE		8	/* Erroneous arithmetic operation. */
+#define	SIGSEGV		11	/* Invalid access to storage. */
+#define	SIGTERM		15	/* Termination request. */
+
+#endif /*__BITS_SIGNUM_H__*/
diff --git a/include/target/vhex/bits/types/DIR.h b/include/target/vhex/bits/types/DIR.h
new file mode 100644
index 0000000..4b61693
--- /dev/null
+++ b/include/target/vhex/bits/types/DIR.h
@@ -0,0 +1,12 @@
+#ifndef __BITS_TYPES_DIR_H__
+# define __BITS_TYPES_DIR_H__
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct {
+	/* Associated directory descriptor */
+	int fd;
+} DIR;
+
+#endif /*__BITS_TYPES_DIR_H__*/
diff --git a/src/string/strerror.c b/src/string/strerror.c
index e7315a3..1a372dc 100644
--- a/src/string/strerror.c
+++ b/src/string/strerror.c
@@ -20,6 +20,11 @@ static char *errno_strings [] = {
 	[EISDIR]      = "Is a directory",
 	[ENOTDIR]     = "Not a directory",
 	[ENOTEMPTY]   = "Directory not empty",
+	[EINTR]       = "Interrupted system call",
+	[EAGAIN]      = "Resource temporarily unavailable",
+	[EIO]         = "Input/output error",
+	[ENOMEDIUM]   = "No medium found",
+	[EMEDIUMTYPE] = "Wrong medium type",
 };
 
 char *strerror(int e)