meson.build: make pandoc optional

Skip only pandoc-requiring parts if it is not available.

doc/meson.build

@@ -172,7 +172,7 @@ html_target = custom_target('pipewire-docs',
                             install_dir: docdir)
 
 
-if generate_module_manpages
+if generate_extra_manpages
    module_man_rst_py = meson.project_source_root() / 'doc' / 'module-man-rst.py'
    module_man_defines = []
    foreach m : manpage_conf.keys()

meson.build

@@ -502,17 +502,20 @@ subdir('man')
 doxygen = find_program('doxygen', required : get_option('docs'))
 pymod = import('python')
 python = pymod.find_installation('python3', required: get_option('docs'))
+
+generate_extra_manpages = false
+
 if doxygen.found() and python.found()
-  generate_module_manpages = get_option('docs').enabled() and get_option('man').enabled()
   if generate_manpages
-    pandoc = find_program('pandoc', required: generate_module_manpages)
-    generate_module_manpages = pandoc.found()
+    pandoc = find_program('pandoc', required: get_option('man-extra'))
+    generate_extra_manpages = pandoc.found()
   endif
-  summary({'Module manpage generation': generate_module_manpages}, bool_yn: true)
 
   subdir('doc')
 endif
 
+summary({'Extra manpage generation': generate_extra_manpages}, bool_yn: true)
+
 setenv = find_program('pw-uninstalled.sh')
 run_target('pw-uninstalled',
   command : [setenv,

meson_options.txt

@@ -13,6 +13,10 @@ option('man',
        description: 'Build manpages',
        type: 'feature',
        value: 'auto')
+option('man-extra',
+       description: 'Build extra manpages',
+       type: 'feature',
+       value: 'auto')
 option('tests',
        description: 'Build tests',
        type: 'feature',