diff --git a/.github/workflows/checksrc.yml b/.github/workflows/checksrc.yml
index d1771ef05c..f7835499eb 100644
--- a/.github/workflows/checksrc.yml
+++ b/.github/workflows/checksrc.yml
@@ -43,7 +43,7 @@ jobs:
           persist-credentials: false
 
       - name: 'check'
-        run: scripts/checksrc-all.sh
+        run: scripts/checksrc-all.pl
 
   codespell-cmakelint-pytype-ruff:
     name: 'codespell, cmakelint, pytype, ruff'
diff --git a/.github/workflows/distcheck.yml b/.github/workflows/distcheck.yml
index 955eae998d..90db76ad4b 100644
--- a/.github/workflows/distcheck.yml
+++ b/.github/workflows/distcheck.yml
@@ -113,7 +113,7 @@ jobs:
           make test-ci
           make install
           popd
-          scripts/checksrc-all.sh
+          scripts/checksrc-all.pl
 
   verify-out-of-tree-cmake:
     name: 'CM out-of-tree'
diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index b4e3c0757b..2c98aac9f7 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -22,7 +22,7 @@
 #
 ###########################################################################
 
-EXTRA_DIST = coverage.sh completion.pl firefox-db2pem.sh checksrc.pl checksrc-all.sh \
+EXTRA_DIST = coverage.sh completion.pl firefox-db2pem.sh checksrc.pl checksrc-all.pl \
   mk-ca-bundle.pl mk-unity.pl schemetable.c cd2nroff nroff2cd cdall cd2cd managen    \
   dmaketgz maketgz release-tools.sh verify-release cmakelint.sh mdlinkcheck          \
   CMakeLists.txt pythonlint.sh randdisable wcurl top-complexity extract-unit-protos
diff --git a/scripts/checksrc-all.pl b/scripts/checksrc-all.pl
new file mode 100755
index 0000000000..0b579567a3
--- /dev/null
+++ b/scripts/checksrc-all.pl
@@ -0,0 +1,38 @@
+#!/usr/bin/env perl
+# Copyright (C) Viktor Szakats
+#
+# SPDX-License-Identifier: curl
+
+use strict;
+use warnings;
+
+use File::Basename;
+use File::Find;
+use Cwd 'abs_path';
+
+my @files;
+if(system('git rev-parse --is-inside-work-tree >/dev/null 2>&1') == 0) {
+  @files = `git ls-files '*.[ch]'`;
+}
+else {
+  find(sub { if(/\.[ch]/) { push(@files, $File::Find::name) } }, ('.'));
+}
+if(@ARGV) {
+  find(sub { if(/\.[ch]/) { push(@files, $File::Find::name) } }, @ARGV);
+}
+
+@files = grep !/\/CMakeFiles\//, @files;
+@files = map { dirname($_) } @files;
+my @dirs = sort { $a cmp $b } keys %{{ map { $_ => 1 } @files }};
+
+my $scripts_dir = dirname(abs_path($0));
+my $anyfailed = 0;
+
+for my $dir (@dirs) {
+    @files = glob("$dir/*.[ch]");
+    if(@files && system("$scripts_dir/checksrc.pl", @files) != 0) {
+        $anyfailed = 1;
+    }
+}
+
+exit $anyfailed;
diff --git a/scripts/checksrc-all.sh b/scripts/checksrc-all.sh
deleted file mode 100755
index 2c4b3c5e28..0000000000
--- a/scripts/checksrc-all.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/bin/sh
-# Copyright (C) Viktor Szakats
-#
-# SPDX-License-Identifier: curl
-
-set -eu
-
-anyfailed=0
-
-for dir in $({
-    if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
-      git ls-files '*.[ch]'
-    else
-      find . -name '*.[ch]'
-    fi
-    [ -n "${1:-}" ] && find "$@" -name '*.[ch]'
-  } | grep -v -F '/CMakeFiles/' | sed -E 's|/[^/]+$||' | sort -u); do
-  if ! ./scripts/checksrc.pl "${dir}"/*.[ch]; then
-    anyfailed=1
-  fi
-done
-
-exit "${anyfailed}"