Build: add option to choose to regenerate cmd_descs.[ch] (#2934)

librz/core/cmd_descs/meson.build

@@ -32,13 +32,17 @@ cmd_descs_yaml = files(
 cmd_descs_src_c = files('cmd_descs.c', 'cmd_descs.h')
 
 r = run_command(py3_exe, '-c', 'import yaml', check: false)
-if r.returncode() == 0
+cmd_option = get_option('regenerate_cmds')
+has_pyyaml = r.returncode() == 0
+if (cmd_option.auto() or cmd_option.enabled()) and has_pyyaml
   cmd_descs_ch = custom_target(
     'cmd_descs.[ch]',
     output: ['cmd_descs.c', 'cmd_descs.h'],
     input: cmd_descs_yaml,
     command: [py3_exe, cmd_descs_generate_py, '--output-dir', '@OUTDIR@', '--src-output-dir', meson.current_source_dir(), '@INPUT@']
   )
+elif cmd_option.enabled() and not has_pyyaml
+  error('PyYAML python module was not found, but it is required to regenerate cmd_descs.[ch]')
 else
   warning('PyYAML python module was not found, using cmd_descs.c/cmd_descs.h from source directory. Install PyYAML (either from your package manager or through pip) if you need to modify cmd_descs files.')
   cmd_descs_ch = cmd_descs_src_c

meson_options.txt

@@ -40,3 +40,4 @@ option('debugger', type: 'boolean', value: true)
 
 option('enable_tests', type: 'boolean', value: true, description: 'Build unit tests in test/unit')
 option('enable_rz_test', type: 'boolean', value: true, description: 'Build rz-test executable for regression testing')
+option('regenerate_cmds', type: 'feature', value: 'auto', description: 'Regenerate the cmd_descs.[ch] files (requires PyYAML)')