build: Beautify cmake files
Add .cmake-format.py
Add cmake-format docs to CONTRIBUTING.md
Minor edits to existing files
Due to a bug in cmake-format, use this script to reformat:
for i in CMakeLists.txt external/CMakeLists.txt layers/CMakeLists.txt tests/CMakeLists.txt tests/layers/CMakeLists.txt
do
sed --in-place='' 's/^ *#/#/' $i
cmake-format --in-place $i
done
Change-Id: I5eeab06f9e071a41ff3a1eb8efea4b162324f940
diff --git a/.cmake-format.py b/.cmake-format.py
new file mode 100644
index 0000000..9c173ac
--- /dev/null
+++ b/.cmake-format.py
@@ -0,0 +1,34 @@
+# Configuration for cmake-format (v0.3.6, circa Apr 2018)
+# https://github.com/cheshirekow/cmake_format
+
+# How wide to allow formatted cmake files
+line_width = 132
+
+# How many spaces to tab for indent
+tab_size = 4
+
+# If arglists are longer than this, break them always
+max_subargs_per_line = 3
+
+# If true, separate flow control names from their parentheses with a space
+separate_ctrl_name_with_space = False
+
+# If true, separate function names from parentheses with a space
+separate_fn_name_with_space = False
+
+# If a statement is wrapped to more than one line, than dangle the closing
+# parenthesis on it's own line
+dangle_parens = False
+
+# What character to use for bulleted lists
+bullet_char = u'*'
+
+# What character to use as punctuation after numerals in an enumerated list
+enum_char = u'.'
+
+# What style line endings to use in the output.
+line_ending = u'unix'
+
+# Format command names consistently as 'lower' or 'upper' case
+command_case = u'lower'
+
