diff --git a/crates/c/build.rs b/crates/c/build.rs
index dad6633..8ff08b9 100644
--- a/crates/c/build.rs
+++ b/crates/c/build.rs
@@ -2,7 +2,7 @@ fn main() {
     println!("cargo:rerun-if-changed=src/c.h");
     println!("cargo:rerun-if-changed=src/c.c");
     cc::Build::new()
-        .compiler("/usr/bin/clang-16")
+        .compiler("/usr/local/bin/clang16")
         .file("./src/c.c")
         .opt_level(3)
         .debug(true)
diff --git a/crates/service/src/lib.rs b/crates/service/src/lib.rs
index b534589..4f550d1 100644
--- a/crates/service/src/lib.rs
+++ b/crates/service/src/lib.rs
@@ -1,4 +1,5 @@
 #![feature(core_intrinsics)]
+#![feature(int_roundings)]
 #![feature(avx512_target_feature)]

 pub mod algorithms;
diff --git a/crates/service/src/prelude/scalar/mod.rs b/crates/service/src/prelude/scalar/mod.rs
index 1894a90..eedc5d8 100644
--- a/crates/service/src/prelude/scalar/mod.rs
+++ b/crates/service/src/prelude/scalar/mod.rs
@@ -2,4 +2,4 @@ mod f16;
 mod f32;

 pub use f16::F16;
-pub use f32::F32;
root@test:/tmp/pgvecto.rs #
root@test:/tmp/pgvecto.rs # gd
gd: Command not found.
root@test:/tmp/pgvecto.rs # git diff
diff --git a/crates/c/build.rs b/crates/c/build.rs
index dad6633..8ff08b9 100644
--- a/crates/c/build.rs
+++ b/crates/c/build.rs
@@ -2,7 +2,7 @@ fn main() {
     println!("cargo:rerun-if-changed=src/c.h");
     println!("cargo:rerun-if-changed=src/c.c");
     cc::Build::new()
-        .compiler("/usr/bin/clang-16")
+        .compiler("/usr/local/bin/clang16")
         .file("./src/c.c")
         .opt_level(3)
         .debug(true)
diff --git a/crates/service/src/lib.rs b/crates/service/src/lib.rs
index b534589..4f550d1 100644
--- a/crates/service/src/lib.rs
+++ b/crates/service/src/lib.rs
@@ -1,4 +1,5 @@
 #![feature(core_intrinsics)]
+#![feature(int_roundings)]
 #![feature(avx512_target_feature)]

 pub mod algorithms;
diff --git a/crates/service/src/prelude/scalar/mod.rs b/crates/service/src/prelude/scalar/mod.rs
index 1894a90..eedc5d8 100644
--- a/crates/service/src/prelude/scalar/mod.rs
+++ b/crates/service/src/prelude/scalar/mod.rs
@@ -2,4 +2,4 @@ mod f16;
 mod f32;

 pub use f16::F16;
-pub use f32::F32;
+pub use self::f32::F32;
diff --git a/src/lib.rs b/src/lib.rs
index cf69461..2267094 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,8 @@
 #![feature(offset_of)]
 #![feature(arbitrary_self_types)]
 #![feature(try_blocks)]
+#![feature(strict_provenance)]
+#![feature(const_maybe_uninit_zeroed)]

 mod bgworker;
 mod datatype;
@@ -33,7 +35,7 @@ unsafe extern "C" fn _PG_init() {
     }
...skipping...
+    }
+}
+
+#[cfg(target_os = "freebsd")]
+pub fn futex_wake(futex: &AtomicU32) -> bool {
+    use std::ptr::null_mut;
+    unsafe {
+        libc::_umtx_op(
+            futex as *const AtomicU32 as *mut _,
+            libc::UMTX_OP_WAKE_PRIVATE,
+            1,
+            null_mut(),
+            null_mut(),
+        )
+    };
+    false
+}
+
 #[cfg(target_os = "linux")]
 pub unsafe fn futex_wake(futex: &AtomicU32) {
     unsafe {
@@ -26,7 +81,7 @@ pub unsafe fn futex_wake(futex: &AtomicU32) {
     }
 }

-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os="freebsd"))]
 pub fn memfd_create() -> std::io::Result<OwnedFd> {
     use rustix::fs::MemfdFlags;
     Ok(rustix::fs::memfd_create(
@@ -35,7 +90,7 @@ pub fn memfd_create() -> std::io::Result<OwnedFd> {
     )?)
 }

-#[cfg(target_os = "linux")]
+#[cfg(any(target_os = "linux", target_os="freebsd"))]
 pub unsafe fn mmap_populate(len: usize, fd: impl AsFd) -> std::io::Result<*mut libc::c_void> {
     use std::ptr::null_mut;
     unsafe {
@@ -43,7 +98,7 @@ pub unsafe fn mmap_populate(len: usize, fd: impl AsFd) -> std::io::Result<*mut l
             null_mut(),
             len,
             ProtFlags::READ | ProtFlags::WRITE,
-            MapFlags::SHARED | MapFlags::POPULATE,
+            MapFlags::SHARED,
             fd,
             0,
         )?)