diff --git a/crt/crtldso.c b/crt/crtldso.c
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/crt/crtldso.c
diff --git a/crt/crtvrfs.c b/crt/crtvrfs.c
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/crt/crtvrfs.c
diff --git a/crt/nt32/crt1.c b/crt/nt32/crt1.c
index 6605bcb..13f3c9a 100644
--- a/crt/nt32/crt1.c
+++ b/crt/nt32/crt1.c
@@ -14,6 +14,8 @@
 static const int __disabled = 0;
 extern const int __crtopt_posix  __attribute((weak,alias("__disabled")));
 extern const int __crtopt_debug __attribute((weak,alias("__disabled")));
+extern const int __crtopt_ldso  __attribute((weak,alias("__disabled")));
+extern const int __crtopt_vrfs  __attribute((weak,alias("__disabled")));
 
 int main();
 
diff --git a/crt/nt32/crtldso.c b/crt/nt32/crtldso.c
new file mode 100644
index 0000000..c3130b8
--- /dev/null
+++ b/crt/nt32/crtldso.c
@@ -0,0 +1,3 @@
+#include "psxglue.h"
+
+const int __crtopt_ldso = __PSXOPT_LDSO;
diff --git a/crt/nt32/crtvrfs.c b/crt/nt32/crtvrfs.c
new file mode 100644
index 0000000..d22d444
--- /dev/null
+++ b/crt/nt32/crtvrfs.c
@@ -0,0 +1,3 @@
+#include "psxglue.h"
+
+const int __crtopt_vrfs = __PSXOPT_VRFS;
diff --git a/crt/nt64/crt1.c b/crt/nt64/crt1.c
index 8c1f838..539ddd2 100644
--- a/crt/nt64/crt1.c
+++ b/crt/nt64/crt1.c
@@ -14,6 +14,8 @@
 static const int __disabled = 0;
 extern const int __crtopt_posix  __attribute((weak,alias("__disabled")));
 extern const int __crtopt_debug __attribute((weak,alias("__disabled")));
+extern const int __crtopt_ldso  __attribute((weak,alias("__disabled")));
+extern const int __crtopt_vrfs  __attribute((weak,alias("__disabled")));
 
 int main();
 
diff --git a/crt/nt64/crtldso.c b/crt/nt64/crtldso.c
new file mode 100644
index 0000000..c3130b8
--- /dev/null
+++ b/crt/nt64/crtldso.c
@@ -0,0 +1,3 @@
+#include "psxglue.h"
+
+const int __crtopt_ldso = __PSXOPT_LDSO;
diff --git a/crt/nt64/crtvrfs.c b/crt/nt64/crtvrfs.c
new file mode 100644
index 0000000..d22d444
--- /dev/null
+++ b/crt/nt64/crtvrfs.c
@@ -0,0 +1,3 @@
+#include "psxglue.h"
+
+const int __crtopt_vrfs = __PSXOPT_VRFS;