From 81ff0a09a93303233057f217aaa3f679db3bbe5c Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Sat, 10 Apr 2021 09:15:47 +0200
Subject: build: set pkgconfig/dependency variables for features

This allows libseat users to e.g. advise people to chmod a+s the
executable if libseat is built with the builtin backend.

While bumping the Meson version, adjust the scdoc logic to avoid
the following warnings:

    WARNING: Project targeting '>=0.56.0' but tried to use feature deprecated since '0.56.0': Dependency.get_pkgconfig_variable. use Dependency.get_variable(pkgconfig : ...) instead
    WARNING: Project targeting '>=0.56.0' but tried to use feature deprecated since '0.55.0': ExternalProgram.path. use ExternalProgram.full_path() instead
---
 meson.build | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/meson.build b/meson.build
index a7e4734..7a70cb6 100644
--- a/meson.build
+++ b/meson.build
@@ -3,7 +3,7 @@ project(
 	'c',
 	version: '0.5.0',
 	license: 'MIT',
-	meson_version: '>=0.53.0',
+	meson_version: '>=0.56.0',
 	default_options: [
 		'c_std=c11',
 		'warning_level=3',
@@ -167,18 +167,26 @@ lib = library(
 
 install_headers('include/libseat.h')
 
+libseat_vars = {
+	'have_seatd': with_seatd.to_string(),
+	'have_logind': logind.found().to_string(),
+	'have_builtin': with_builtin.to_string(),
+}
+
 pkgconfig = import('pkgconfig')
 pkgconfig.generate(lib,
 	version: meson.project_version(),
 	filebase: 'libseat',
 	name: 'libseat',
 	description: 'Seat management library',
+	variables: libseat_vars,
 )
 
 libseat = declare_dependency(
 	link_with: lib,
 	dependencies: private_deps,
 	include_directories: include_directories('include', is_system: true),
+	variables: libseat_vars,
 )
 
 if with_server
@@ -220,7 +228,7 @@ else
 endif
 
 if scdoc.found()
-	scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true)
+	scdoc_prog = find_program(scdoc.get_variable(pkgconfig: 'scdoc'), native: true)
 	mandir = get_option('mandir')
 
 	foreach src : ['seatd.1.scd']
@@ -233,7 +241,7 @@ if scdoc.found()
 			input: 'man/' + src,
 			output: output,
 			command: [
-				'sh', '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.path(), output)
+				'sh', '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.full_path(), output)
 			],
 			install: true,
 			install_dir: '@0@/man@1@'.format(mandir, section)
-- 
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