Prevent stub inclusion when building shared objects (#10875)

programs/bpf/rust/128bit/src/lib.rs

@@ -53,7 +53,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/alloc/src/lib.rs

@@ -85,7 +85,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/dep_crate/src/lib.rs

@@ -20,7 +20,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/invoke/src/lib.rs

@@ -201,4 +201,5 @@ fn process_instruction(
     Ok(())
 }
 
+// Pull in syscall stubs when building for non-BPF targets
 solana_sdk::program_stubs!();

programs/bpf/rust/invoked/src/lib.rs

@@ -195,4 +195,5 @@ fn process_instruction(
     Ok(())
 }
 
+// Pull in syscall stubs when building for non-BPF targets
 solana_sdk::program_stubs!();

programs/bpf/rust/iter/src/lib.rs

@@ -21,7 +21,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/many_args/src/lib.rs

@@ -29,7 +29,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/many_args_dep/src/lib.rs

@@ -51,7 +51,7 @@ pub fn many_args_sret(
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/noop/src/lib.rs

@@ -67,7 +67,7 @@ fn process_instruction(
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/param_passing/src/lib.rs

@@ -26,7 +26,7 @@ pub extern "C" fn entrypoint(_input: *mut u8) -> u64 {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

programs/bpf/rust/param_passing_dep/src/lib.rs

@@ -27,7 +27,7 @@ impl<'a> TestDep {
 #[cfg(test)]
 mod test {
     use super::*;
-    // Pulls in the stubs required for `info!()`
+    // Pull in syscall stubs when building for non-BPF targets
     solana_sdk::program_stubs!();
 
     #[test]

sdk/src/program_stubs.rs

@@ -1,5 +1,6 @@
-//! @brief Stubs for syscalls when building tests for x86
+//! @brief Syscall stubs when building for non-BPF targets
 
+#[cfg(not(target_arch = "bpf"))]
 fn print_line_to_stdout(_message: &str) {
     #[cfg(not(feature = "program"))]
     {
@@ -11,6 +12,7 @@ fn print_line_to_stdout(_message: &str) {
     }
 }
 
+#[cfg(not(target_arch = "bpf"))]
 #[no_mangle]
 /// # Safety
 pub unsafe fn sol_log_(message: *const u8, length: u64) {
@@ -19,11 +21,13 @@ pub unsafe fn sol_log_(message: *const u8, length: u64) {
     print_line_to_stdout(string);
 }
 
+#[cfg(not(target_arch = "bpf"))]
 #[no_mangle]
 pub fn sol_log_64_(arg1: u64, arg2: u64, arg3: u64, arg4: u64, arg5: u64) {
     print_line_to_stdout(&format!("{} {} {} {} {}", arg1, arg2, arg3, arg4, arg5));
 }
 
+#[cfg(not(target_arch = "bpf"))]
 #[no_mangle]
 pub fn sol_invoke_signed_rust() {
     print_line_to_stdout("sol_invoke_signed_rust()");
@@ -32,6 +36,7 @@ pub fn sol_invoke_signed_rust() {
 #[macro_export]
 macro_rules! program_stubs {
     () => {
+        #[cfg(not(target_arch = "bpf"))]
         #[test]
         fn pull_in_externs() {
             use solana_sdk::program_stubs::{sol_invoke_signed_rust, sol_log_, sol_log_64_};