From 6148b0ced86e37aa461eb4a399a6573e2bc687fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Sun, 24 Jan 2021 11:45:52 +0200
Subject: [PATCH] meson: make xmlto optional, build spec only if found

Refs https://gitlab.freedesktop.org/xdg/shared-mime-info/-/issues/150
---
 data/meson.build | 22 ++++++++++++----------
 meson.build      |  2 +-
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/data/meson.build b/data/meson.build
index 263567d..24361c9 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -22,14 +22,16 @@ install_data(
   install_dir : get_option('datadir') / 'gettext/its'
 )
 
-custom_target('shared-mime-info-spec-html',
-    input : 'shared-mime-info-spec.xml',
-    output: 'shared-mime-info-spec-html',
-    command: [
-        xmlto,
-        '-o', '@OUTPUT@',
-        'html-nochunks',
-        '@INPUT@',
-    ],
-    build_by_default: true,
+if xmlto.found()
+    custom_target('shared-mime-info-spec-html',
+        input : 'shared-mime-info-spec.xml',
+        output: 'shared-mime-info-spec-html',
+        command: [
+            xmlto,
+            '-o', '@OUTPUT@',
+            'html-nochunks',
+            '@INPUT@',
+        ],
+        build_by_default: true,
 )
+endif
diff --git a/meson.build b/meson.build
index 9a28573..0d08c8a 100644
--- a/meson.build
+++ b/meson.build
@@ -22,7 +22,7 @@ config.set_quoted('VERSION', meson.project_version())
 
 itstool = find_program('itstool')
 xmllint = find_program('xmllint')
-xmlto   = find_program('xmlto')
+xmlto   = find_program('xmlto', required: false)
 
 ###############################################################################
 # Find xdgmime
-- 
2.37.3