diff --git a/programs/bpf/tests/programs.rs b/programs/bpf/tests/programs.rs
index 4b8a07a1ff..853f85d163 100644
--- a/programs/bpf/tests/programs.rs
+++ b/programs/bpf/tests/programs.rs
@@ -1369,19 +1369,19 @@ fn assert_instruction_count() {
     #[cfg(feature = "bpf_c")]
     {
         programs.extend_from_slice(&[
-            ("alloc", 1137),
-            ("bpf_to_bpf", 13),
-            ("multiple_static", 8),
-            ("noop", 42),
-            ("noop++", 42),
-            ("relative_call", 10),
-            ("return_data", 480),
-            ("sanity", 174),
-            ("sanity++", 174),
-            ("secp256k1_recover", 357),
-            ("sha", 694),
-            ("struct_pass", 8),
-            ("struct_ret", 22),
+            ("alloc", 1237),
+            ("bpf_to_bpf", 96),
+            ("multiple_static", 52),
+            ("noop", 5),
+            ("noop++", 5),
+            ("relative_call", 26),
+            ("return_data", 980),
+            ("sanity", 1255),
+            ("sanity++", 1260),
+            ("secp256k1_recover", 25383),
+            ("sha", 1328),
+            ("struct_pass", 108),
+            ("struct_ret", 28),
         ]);
     }
     #[cfg(feature = "bpf_rust")]
diff --git a/sdk/bpf/scripts/install.sh b/sdk/bpf/scripts/install.sh
index 6e88c1c463..c94d51edab 100755
--- a/sdk/bpf/scripts/install.sh
+++ b/sdk/bpf/scripts/install.sh
@@ -92,7 +92,7 @@ if [[ ! -e criterion-$version.md || ! -e criterion ]]; then
 fi
 
 # Install Rust-BPF
-version=v1.12
+version=v1.19
 if [[ ! -e bpf-tools-$version.md || ! -e bpf-tools ]]; then
   (
     set -e
diff --git a/sdk/cargo-build-bpf/src/main.rs b/sdk/cargo-build-bpf/src/main.rs
index a86fb167a9..247e4b8a8d 100644
--- a/sdk/cargo-build-bpf/src/main.rs
+++ b/sdk/cargo-build-bpf/src/main.rs
@@ -58,7 +58,7 @@ where
     S: AsRef<OsStr>,
 {
     let args = args.into_iter().collect::<Vec<_>>();
-    print!("Running: {}", program.display());
+    print!("cargo-build-bpf child: {}", program.display());
     for arg in args.iter() {
         print!(" {}", arg.as_ref().to_str().unwrap_or("?"));
     }
@@ -92,19 +92,24 @@ fn install_if_missing(
     version: &str,
     url: &str,
     download_file_name: &str,
+    target_path: &Path,
 ) -> Result<(), String> {
+    // Check whether the target path is an empty directory. This can
+    // happen if package download failed on previous run of
+    // cargo-build-bpf.  Remove the target_path directory in this
+    // case.
+    if target_path.is_dir()
+        && target_path
+            .read_dir()
+            .map_err(|err| err.to_string())?
+            .next()
+            .is_none()
+    {
+        fs::remove_dir(&target_path).map_err(|err| err.to_string())?;
+    }
+
     // Check whether the package is already in ~/.cache/solana.
     // Download it and place in the proper location if not found.
-    let home_dir = PathBuf::from(env::var("HOME").unwrap_or_else(|err| {
-        eprintln!("Can't get home directory path: {}", err);
-        exit(1);
-    }));
-    let target_path = home_dir
-        .join(".cache")
-        .join("solana")
-        .join(version)
-        .join(package);
-
     if !target_path.is_dir()
         && !target_path
             .symlink_metadata()
@@ -142,7 +147,7 @@ fn install_if_missing(
     let source_path = source_base.join(package);
     // Check whether the correct symbolic link exists.
     let invalid_link = if let Ok(link_target) = source_path.read_link() {
-        if link_target != target_path {
+        if link_target.ne(target_path) {
             fs::remove_file(&source_path).map_err(|err| err.to_string())?;
             true
         } else {
@@ -430,14 +435,41 @@ fn build_bpf_package(config: &Config, target_directory: &Path, package: &cargo_m
     } else {
         "solana-bpf-tools-linux.tar.bz2"
     };
+
+    let home_dir = PathBuf::from(env::var("HOME").unwrap_or_else(|err| {
+        eprintln!("Can't get home directory path: {}", err);
+        exit(1);
+    }));
+    let version = "v1.19";
+    let package = "bpf-tools";
+    let target_path = home_dir
+        .join(".cache")
+        .join("solana")
+        .join(version)
+        .join(package);
     install_if_missing(
         config,
-        "bpf-tools",
-        "v1.12",
+        package,
+        version,
         "https://github.com/solana-labs/bpf-tools/releases/download",
         bpf_tools_download_file_name,
+        &target_path,
     )
-    .expect("Failed to install bpf-tools");
+    .unwrap_or_else(|err| {
+        // The package version directory doesn't contain a valid
+        // installation, and it should be removed.
+        let target_path_parent = target_path.parent().expect("Invalid package path");
+        fs::remove_dir_all(&target_path_parent).unwrap_or_else(|err| {
+            eprintln!(
+                "Failed to remove {} while recovering from installation failure: {}",
+                target_path_parent.to_string_lossy(),
+                err,
+            );
+            exit(1);
+        });
+        eprintln!("Failed to install bpf-tools: {}", err);
+        exit(1);
+    });
     link_bpf_toolchain(config);
 
     let llvm_bin = config
@@ -450,9 +482,20 @@ fn build_bpf_package(config: &Config, target_directory: &Path, package: &cargo_m
     env::set_var("AR", llvm_bin.join("llvm-ar"));
     env::set_var("OBJDUMP", llvm_bin.join("llvm-objdump"));
     env::set_var("OBJCOPY", llvm_bin.join("llvm-objcopy"));
-    let mut rust_flags = String::from("-C lto=no");
-    rust_flags.push_str(" -C opt-level=2");
-    env::set_var("RUSTFLAGS", rust_flags);
+    let rustflags = match env::var("RUSTFLAGS") {
+        Ok(rf) => {
+            if rf.contains("-C lto=no") {
+                rf
+            } else {
+                rf + &" -C lto=no".to_string()
+            }
+        }
+        _ => "-C lto=no".to_string(),
+    };
+    if config.verbose {
+        println!("RUSTFLAGS={}", rustflags);
+    }
+    env::set_var("RUSTFLAGS", rustflags);
     let cargo_build = PathBuf::from("cargo");
     let mut cargo_build_args = vec![
         "+bpf",