From a527db8ca7c53c765c22763e0e2e2df68c66c09b Mon Sep 17 00:00:00 2001
From: elsid <elsid.mail@gmail.com>
Date: Fri, 10 Mar 2023 15:07:16 +0100
Subject: [PATCH] Enforce space only indendation in CMake files

---
 .gitlab-ci.yml           | 1 +
 CI/check_cmake_format.sh | 6 ++++++
 2 files changed, 7 insertions(+)
 create mode 100755 CI/check_cmake_format.sh

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3d4a3ee193..5b0d1c18bd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -132,6 +132,7 @@ Clang_Format:
   before_script:
     - CI/install_debian_deps.sh openmw-clang-format
   script:
+    - CI/check_cmake_format.sh
     - CI/check_file_names.sh
     - CI/check_clang_format.sh
 
diff --git a/CI/check_cmake_format.sh b/CI/check_cmake_format.sh
new file mode 100755
index 0000000000..40cd0b77f6
--- /dev/null
+++ b/CI/check_cmake_format.sh
@@ -0,0 +1,6 @@
+#!/bin/bash -ex
+
+git ls-files -- ':(exclude)extern/' 'CMakeLists.txt' '*.cmake' |
+    xargs grep -P '^\s*\t' &&
+    ( echo 'CMake files contain leading tab character. Use only spaces for indentation'; exit -1 )
+exit 0