Extract version from header file

extract_version.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+import os
+import re
+
+base_path = os.path.abspath(os.path.dirname(__file__))
+config_h  = os.path.join(base_path, 'include', 'spdlog', 'version.h')
+data      = {'MAJOR': 0, 'MINOR': 0, 'PATCH': 0}
+reg       = re.compile(r'^\s*#define\s+SPDLOG_VER_([A-Z]+)\s+([0-9]+).*$')
+
+with open(config_h, 'r') as fp:
+  for l in fp:
+    m = reg.match(l)
+    if m:
+      data[m.group(1)] = int(m.group(2))
+
+print('{}.{}.{}'.format(data['MAJOR'], data['MINOR'], data['PATCH']))

meson.build

@@ -1,7 +1,13 @@
 project('spdlog', ['cpp'],
   license         : 'MIT',
-  version         : '1.3.1',
-  default_options : ['warning_level=3', 'cpp_std=c++11', 'default_library=static'],
+  version         : run_command(find_program('extract_version.py')).stdout().strip(),
+  default_options : [
+    'warning_level=3',
+    'cpp_std=c++11',
+    'default_library=static',
+    'buildtype=release',
+    'b_colorout=always',
+  ],
 )
 
 # ------------------------