gnome.gtk-doc() gives permission denied error in Yocto (do_install) - gtk

Question

I am trying to generate HTML docs using meson build. I used gnome.gtkdoc() method for this from meson build system.
Following is my meson.build file
project('mydoc', 'c',
version: '0.1.0')
gnome = import('gnome')
glib_prefix = dependency('glib-2.0').get_pkgconfig_variable('prefix')
glib_docpath = join_paths(glib_prefix, 'share', 'gtk-doc', 'html')
docpath = join_paths(get_option('datadir'), 'gtk-doc', 'html')
content_files = [
'docbook-mydoc.xml',
]
gnome.gtkdoc('mydoc',
main_xml : 'main-doc.xml',
src_dir : [
join_paths(meson.source_root())
],
fixxref_args: [
'--html-dir=' + (gnome.gtkdoc_html_dir(meson.project_name())),
'--extra-dir=#0#'.format(join_paths(glib_docpath, 'glib')),
'--extra-dir=#0#'.format(join_paths(glib_docpath, 'gobject')),
'--extra-dir=#0#'.format(join_paths(glib_docpath, 'gio')),
],
content_files: content_files,
install : true,
install_dir: join_paths(meson.source_root(), 'doc')
)
Above meson.build works fine and can generates HTML pages. I have problem when running above meson.build in Yocto. It gives me Permission denied error while do_install operation.
ERROR: ['gtkdoc-mkhtml', '--path=/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/git/:/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/build/', 'mydoc', '../main-doc.xml'] failed with status 1
Traceback (most recent call last):
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/bin/gtkdoc-mkhtml", line 51, in <module>
sys.exit(mkhtml.run(options))
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/share/gtk-doc/python/gtkdoc/mkhtml.py", line 93, in run
quiet] + remaining_args + [gtkdocdir + '/gtk-doc.xsl', document])
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/share/gtk-doc/python/gtkdoc/mkhtml.py", line 42, in run_xsltproc
return subprocess.call(command + args)
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/lib/python3.7/subprocess.py", line 339, in call
with Popen(*popenargs, **kwargs) as p:
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/lib/python3.7/subprocess.py", line 800, in __init__
restore_signals, start_new_session)
File "/home/user/yocto/build-zeus/tmp/work/cortexa7t2hf-neon-fslc-linux-gnueabi/mydoc/1.0.0-r0/recipe-sysroot-native/usr/lib/python3.7/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: ''
I am not sure why its gave me permission denied error. Any help will be appreciated.

Answer 1

It's a bit suspicious that you are trying to install into source root directory with
install_dir: join_paths(meson.source_root(), 'doc')
Typically, it's just directory name relative to gtk-doc html dir (gnome.gtkdoc_html_dir()) or not set at all - then directory is module
name. So try just remove it...
Update
You might be missing prefix for project html dir (for --html-dir )and it should look like:
'--html-dir=' + join_paths(get_option('prefix'), gnome.gtkdoc_html_dir(meson.project_name()),
Note. And instead of generating gtk doc path, it should be more reliable to use above mentioned function:
'--extra-dir=' + join_paths(glib_prefix, gnome.gtkdoc_html_dir('glib')),
...