diff --git a/Cargo.lock b/Cargo.lock
index e419c0e9a46d6..699e5ebf754fb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3461,7 +3461,6 @@ name = "run_make_support"
 version = "0.2.0"
 dependencies = [
  "gimli 0.28.1",
- "glob",
  "object 0.34.0",
  "regex",
  "similar",
diff --git a/src/tools/run-make-support/Cargo.toml b/src/tools/run-make-support/Cargo.toml
index 4a244252c84d8..2f7f51442f164 100644
--- a/src/tools/run-make-support/Cargo.toml
+++ b/src/tools/run-make-support/Cargo.toml
@@ -9,4 +9,3 @@ similar = "2.5.0"
 wasmparser = "0.118.2"
 regex = "1.8" # 1.8 to avoid memchr 2.6.0, as 2.5.0 is pinned in the workspace
 gimli = "0.28.1"
-glob = "0.3.1"
diff --git a/src/tools/run-make-support/src/lib.rs b/src/tools/run-make-support/src/lib.rs
index 17b62bc8dbbc9..0827ef6623d23 100644
--- a/src/tools/run-make-support/src/lib.rs
+++ b/src/tools/run-make-support/src/lib.rs
@@ -22,7 +22,6 @@ use std::panic;
 use std::path::{Path, PathBuf};
 
 pub use gimli;
-pub use glob;
 pub use object;
 pub use regex;
 pub use wasmparser;
@@ -248,14 +247,14 @@ pub fn uname() -> String {
 /// Inside a glob pattern of files (paths), read their contents and count the
 /// number of regex matches with a given expression (re).
 #[track_caller]
-pub fn count_regex_matches_in_file_glob(re: &str, paths: &str) -> usize {
+pub fn count_regex_matches_in_files_with_extension(re: &str, ext: &str) -> usize {
     let re = regex::Regex::new(re).expect(format!("Regex expression {re} is not valid.").as_str());
-    let paths = glob::glob(paths).expect(format!("Glob expression {paths} is not valid.").as_str());
     use io::BufRead;
-    paths
+    fs_wrapper::read_dir(cwd())
         .filter_map(|entry| entry.ok())
-        .filter(|entry| entry.as_path().is_file())
-        .filter_map(|path| fs::File::open(&path).ok())
+        .filter(|entry| entry.path().is_file())
+        .filter(|entry| entry.path().extension().unwrap() == ext)
+        .filter_map(|entry| fs::File::open(&entry.path()).ok())
         .map(|file| io::BufReader::new(file))
         .flat_map(|reader| reader.lines().filter_map(|entry| entry.ok()))
         .filter(|line| re.is_match(line))
diff --git a/tests/run-make/sepcomp-cci-copies/rmake.rs b/tests/run-make/sepcomp-cci-copies/rmake.rs
index 8d2411c1faec4..ff0abd9e8781b 100644
--- a/tests/run-make/sepcomp-cci-copies/rmake.rs
+++ b/tests/run-make/sepcomp-cci-copies/rmake.rs
@@ -4,10 +4,10 @@
 // created for each source module (see `rustc_const_eval::monomorphize::partitioning`).
 // See https://github.com/rust-lang/rust/pull/16367
 
-use run_make_support::{count_regex_matches_in_file_glob, rustc};
+use run_make_support::{count_regex_matches_in_files_with_extension, rustc};
 
 fn main() {
     rustc().input("cci_lib.rs").run();
     rustc().input("foo.rs").emit("llvm-ir").codegen_units(6).arg("-Zinline-in-all-cgus").run();
-    assert_eq!(count_regex_matches_in_file_glob(r#"define\ .*cci_fn"#, "foo.*.ll"), 2);
+    assert_eq!(count_regex_matches_in_files_with_extension(r#"define\ .*cci_fn"#, "ll"), 2);
 }
diff --git a/tests/run-make/sepcomp-inlining/rmake.rs b/tests/run-make/sepcomp-inlining/rmake.rs
index 0315fd6997204..4d2d09b3ba799 100644
--- a/tests/run-make/sepcomp-inlining/rmake.rs
+++ b/tests/run-make/sepcomp-inlining/rmake.rs
@@ -5,15 +5,21 @@
 // in only one compilation unit.
 // See https://github.com/rust-lang/rust/pull/16367
 
-use run_make_support::{count_regex_matches_in_file_glob, glob, regex, rustc};
+use run_make_support::{count_regex_matches_in_files_with_extension, glob, regex, rustc};
 
 fn main() {
     rustc().input("foo.rs").emit("llvm-ir").codegen_units(3).arg("-Zinline-in-all-cgus").run();
-    assert_eq!(count_regex_matches_in_file_glob(r#"define\ i32\ .*inlined"#, "foo.*.ll"), 0);
-    assert_eq!(count_regex_matches_in_file_glob(r#"define\ internal\ .*inlined"#, "foo.*.ll"), 2);
-    assert_eq!(count_regex_matches_in_file_glob(r#"define\ hidden\ i32\ .*normal"#, "foo.*.ll"), 1);
+    assert_eq!(count_regex_matches_in_files_with_extension(r#"define\ i32\ .*inlined"#, "ll"), 0);
     assert_eq!(
-        count_regex_matches_in_file_glob(r#"declare\ hidden\ i32\ .*normal"#, "foo.*.ll"),
+        count_regex_matches_in_files_with_extension(r#"define\ internal\ .*inlined"#, "ll"),
+        2
+    );
+    assert_eq!(
+        count_regex_matches_in_files_with_extension(r#"define\ hidden\ i32\ .*normal"#, "ll"),
+        1
+    );
+    assert_eq!(
+        count_regex_matches_in_files_with_extension(r#"declare\ hidden\ i32\ .*normal"#, "ll"),
         2
     );
 }
diff --git a/tests/run-make/sepcomp-separate/rmake.rs b/tests/run-make/sepcomp-separate/rmake.rs
index 99ee221adc1b6..456fccc82834b 100644
--- a/tests/run-make/sepcomp-separate/rmake.rs
+++ b/tests/run-make/sepcomp-separate/rmake.rs
@@ -3,9 +3,9 @@
 // wind up in three different compilation units.
 // See https://github.com/rust-lang/rust/pull/16367
 
-use run_make_support::{count_regex_matches_in_file_glob, rustc};
+use run_make_support::{count_regex_matches_in_files_with_extension, rustc};
 
 fn main() {
     rustc().input("foo.rs").emit("llvm-ir").codegen_units(3).run();
-    assert_eq!(count_regex_matches_in_file_glob(r#"define\ .*magic_fn"#, "foo.*.ll"), 3);
+    assert_eq!(count_regex_matches_in_files_with_extension(r#"define\ .*magic_fn"#, "ll"), 3);
 }