[libgxps] Fix meson warnings

[Carlos Garcia Campos <carlosgc src gnome org>]

commit a18e12604d2cab13146a357c7fd3b80909b65efd
Author: Wolfgang Stöggl <c72578 yahoo de>
Date:   Thu Sep 9 17:59:13 2021 +0200

    Fix meson warnings
    
    - Deduplicate "libraries" in pkgg.generate()
      Fixes:
        libgxps/meson.build:101: WARNING: Keyword argument "libraries"
        defined multiple times.
        WARNING: This will be an error in future Meson releases.
    - Increase required meson_version from 0.43.0 to 0.50.0 due to usage
      of install arg in libgxps/meson.build:63:
      Fixes:
        WARNING: Project targeting '>= 0.43.0' but tried to use feature
        introduced in '0.50.0': install arg in configure_file.

 libgxps/meson.build | 5 ++---
 meson.build         | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/libgxps/meson.build b/libgxps/meson.build
index 29b044e..52d53d0 100644
--- a/libgxps/meson.build
+++ b/libgxps/meson.build
@@ -98,12 +98,11 @@ pkgg = import('pkgconfig')
 cairo_dep_str = cairo_pc_found ? ', cairo >= ' + cairo_req : ''
 cairo_dep_libs = cairo_pc_found ? [] : cairo_dep
 
-pkgg.generate(libraries: gxps,
+pkgg.generate(libraries: [gxps, cairo_dep_libs],
               version: gxps_version,
               name: 'libgxps',
               description: 'XPS Documents library',
-              requires: 'gobject-2.0 >= ' + glib_req + ', gio-2.0 >= ' + glib_req + ', libarchive >= ' + 
archive_req + cairo_dep_str,
-              libraries: [gxps, cairo_dep_libs])
+              requires: 'gobject-2.0 >= ' + glib_req + ', gio-2.0 >= ' + glib_req + ', libarchive >= ' + 
archive_req + cairo_dep_str)
 
 if build_gir
   gir_extra_args = [
diff --git a/meson.build b/meson.build
index 07c8cc2..c6780c9 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project('libgxps', 'c',
           'buildtype=debugoptimized'
         ],
         license: 'LGPL2+',
-        meson_version: '>= 0.43.0')
+        meson_version: '>= 0.50.0')
 
 gxps_version = meson.project_version()
 version_array = gxps_version.split('.')