[gdm: 2/11] meson: Obey at -Dcustom-conf option when installing custom.conf

[Ray Strode <halfline src gnome org>]

commit 1cf8c4d426658d35bd7834a95c0e8816e1787c87
Author: Marco Trevisan (Treviño) <marco ubuntu com>
Date:   Fri Aug 28 05:19:16 2020 +0200

    meson: Obey at -Dcustom-conf option when installing custom.conf
    
    No matter what parameter was passed to gdm, the custom.conf was always
    installed in $gdmcomnfdir/custom.conf, even if the config.h was using the
    configured path.
    
    Ensure that we use the passed argument, setting its name as configure_file
    output and its path as the install_dir.
    Unfortunately we've to be hackish here, using coreutils tools until we
    require meson 0.53 (and can use its FS module).

 data/meson.build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/meson.build b/data/meson.build
index b24f7c0b..bbcad589 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -34,10 +34,10 @@ configure_file(
 )
 configure_file(
   input: 'gdm.conf-custom.in',
-  output: 'custom.conf',
+  output: gdm_custom_conf.split('/')[-1],
   copy: true,
   install_mode: 'rw-r--r--',
-  install_dir: gdmconfdir,
+  install_dir: run_command(find_program('dirname'), gdm_custom_conf).stdout().strip(),
 )
 
 # GSettings schema