diff --git a/library/std/src/personality/gcc.rs b/library/std/src/personality/gcc.rs
index 7f0b0439cf083..2825bf1aeae62 100644
--- a/library/std/src/personality/gcc.rs
+++ b/library/std/src/personality/gcc.rs
@@ -35,6 +35,7 @@
 //!
 //! Once stack has been unwound down to the handler frame level, unwinding stops
 //! and the last personality routine transfers control to the catch block.
+#![cfg(not(target_os = "l4re"))]
 
 use super::dwarf::eh::{self, EHAction, EHContext};
 use libc::{c_int, uintptr_t};
diff --git a/library/std/src/sys/unix/process/process_unix.rs b/library/std/src/sys/unix/process/process_unix.rs
index 56a805cef7318..bbc547111a0bf 100644
--- a/library/std/src/sys/unix/process/process_unix.rs
+++ b/library/std/src/sys/unix/process/process_unix.rs
@@ -717,29 +717,45 @@ fn signal_string(signal: i32) -> &'static str {
         libc::SIGILL => " (SIGILL)",
         libc::SIGTRAP => " (SIGTRAP)",
         libc::SIGABRT => " (SIGABRT)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGBUS => " (SIGBUS)",
         libc::SIGFPE => " (SIGFPE)",
         libc::SIGKILL => " (SIGKILL)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGUSR1 => " (SIGUSR1)",
         libc::SIGSEGV => " (SIGSEGV)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGUSR2 => " (SIGUSR2)",
         libc::SIGPIPE => " (SIGPIPE)",
         libc::SIGALRM => " (SIGALRM)",
         libc::SIGTERM => " (SIGTERM)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGCHLD => " (SIGCHLD)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGCONT => " (SIGCONT)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGSTOP => " (SIGSTOP)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGTSTP => " (SIGTSTP)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGTTIN => " (SIGTTIN)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGTTOU => " (SIGTTOU)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGURG => " (SIGURG)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGXCPU => " (SIGXCPU)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGXFSZ => " (SIGXFSZ)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGVTALRM => " (SIGVTALRM)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGPROF => " (SIGPROF)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGWINCH => " (SIGWINCH)",
-        #[cfg(not(target_os = "haiku"))]
+        #[cfg(not(any(target_os = "haiku", target_os = "l4re")))]
         libc::SIGIO => " (SIGIO)",
+        #[cfg(not(target_os = "l4re"))]
         libc::SIGSYS => " (SIGSYS)",
         // For information on Linux signals, run `man 7 signal`
         #[cfg(all(