Re: [PATCH 3/5] meson: correct path to system config/attribute files

[Patrick Steinhardt <ps@pks.im>]

On Thu, May 08, 2025 at 05:44:37PM +0100, Ramsay Jones wrote:
> diff --git a/meson.build b/meson.build
> index 48f31157a0..106cb17612 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -757,8 +757,6 @@ endif
>  libgit_c_args = [
>    '-DBINDIR="' + get_option('bindir') + '"',
>    '-DDEFAULT_GIT_TEMPLATE_DIR="' + get_option('datadir') / 'git-core/templates' + '"',
> -  '-DETC_GITATTRIBUTES="' + get_option('gitattributes') + '"',
> -  '-DETC_GITCONFIG="' + get_option('gitconfig') + '"',
>    '-DFALLBACK_RUNTIME_PREFIX="' + get_option('prefix') + '"',
>    '-DGIT_HOST_CPU="' + host_machine.cpu_family() + '"',
>    '-DGIT_HTML_PATH="' + get_option('datadir') / 'doc/git-doc"',
> @@ -769,6 +767,18 @@ libgit_c_args = [
>    '-DSHELL_PATH="' + fs.as_posix(target_shell.full_path()) + '"',
>  ]
>  
> +system_attributes = get_option('gitattributes')
> +if system_attributes != ''
> +  libgit_c_args += '-DETC_GITATTRIBUTES="' + system_attributes + '"'
> +else
> +  libgit_c_args += '-DETC_GITATTRIBUTES="' + get_option('sysconfdir') + '/gitattributes"'
> +endif
> +system_config = get_option('gitconfig')
> +if system_config != ''
> +  libgit_c_args += '-DETC_GITCONFIG="' + system_config + '"'
> +else
> +  libgit_c_args += '-DETC_GITCONFIG="' + get_option('sysconfdir') + '/gitconfig"'

Instead of `get_option('sysconfdir') + '/gitconfig'` you can say
`get_option('sysconfdir') / 'gitconfig'`. It's a bit pointless in this
case and not really needed, but '/' has some special magic for handling
absolute and relative paths.

> +endif
>  editor_opt = get_option('default_editor')
>  if editor_opt != '' and editor_opt != 'vi'
>    libgit_c_args += '-DDEFAULT_EDITOR="' + editor_opt + '"'

Nit: let's maybe add an empty newline after each of these blocks to make
it a bit easier to see where handling for each specific option stops.

> diff --git a/meson_options.txt b/meson_options.txt
> index 8547c0eb47..4d78d4c7ac 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -3,9 +3,9 @@ option('default_pager', type: 'string', value: 'less',
>    description: 'Fall-back pager.')
>  option('default_editor', type: 'string', value: 'vi',
>    description: 'Fall-back editor.')
> -option('gitconfig', type: 'string', value: '/etc/gitconfig',
> +option('gitconfig', type: 'string',
>    description: 'Path to the global git configuration file.')
> -option('gitattributes', type: 'string', value: '/etc/gitattributes',
> +option('gitattributes', type: 'string',
>    description: 'Path to the global git attributes file.')
>  option('pager_environment', type: 'string', value: 'LESS=FRX LV=-c',
>    description: 'Environment used when spawning the pager')

Makes sense. Should we maybe document the default values here now that
they aren't immediately obvious anymore?

Patrick