meson.build: Specify 'check' option in run_command()

The default value will be changed in future Meson releases.

Don't use deprecated python3.path() and execute(..., gui_app: ...).

MSVC_NMake/meson.build

@@ -23,7 +23,7 @@ handle_built_files = project_source_root / 'tools' / 'handle-built-files.py'
 if can_add_dist_script
   # Distribute built files.
   meson.add_dist_script(
-    python3.path(), handle_built_files, 'dist_gen_msvc_files',
+    python3, handle_built_files, 'dist_gen_msvc_files',
     meson.current_build_dir(),
     untracked_msvc_nmake,
     project_build_root / 'sigc++config.h',

docs/manual/meson.build

@@ -31,6 +31,7 @@ if xmllint.found()
     validate,
     meson.current_source_dir() / 'can_use_xmllint.xml',
     meson.current_build_dir() / 'can_use_xmllint.stamp',
+    check: false,
   ).returncode() == 0
   if not can_parse_and_validate
     # The DocBook V5.0 package is called docbook5-xml in Ubuntu,
@@ -100,7 +101,7 @@ endif
 if can_add_dist_script
   # Distribute built files.
   meson.add_dist_script(
-    python3.path(), tutorial_custom_cmd, 'dist_doc',
+    python3, tutorial_custom_cmd, 'dist_doc',
     doc_dist_dir,
     meson.current_build_dir(),
     meson.current_source_dir() / sigc_manual_xml,

docs/reference/meson.build

@@ -145,7 +145,7 @@ devhelp_file = custom_target('devhelp',
 
 # Install Devhelp file and html files.
 meson.add_install_script(
-  python3.path(), doc_reference, 'install_doc',
+  python3, doc_reference, 'install_doc',
   doctool_dir,
   devhelp_file.full_path(),
   install_devhelpdir,
@@ -156,7 +156,7 @@ meson.add_install_script(
 if can_add_dist_script
   # Distribute built files and files copied by mm-common-get.
   meson.add_dist_script(
-    python3.path(), doc_reference, 'dist_doc',
+    python3, doc_reference, 'dist_doc',
     doctool_dir,
     doctool_dist_dir,
     meson.current_build_dir(),

examples/meson.build

@@ -23,7 +23,6 @@ foreach ex : examples
     cpp_args: '-DSIGCXX_DISABLE_DEPRECATED',
     dependencies: sigcxx_own_dep,
     implicit_include_directories: false,
-    gui_app: false,
     build_by_default: build_examples
   )
 endforeach

meson.build

@@ -7,8 +7,8 @@ project('libsigc++', 'cpp',
     'cpp_std=c++11',
     'warning_level=0',
   ],
-  meson_version: '>= 0.54.0', # required for meson.override_dependency()
-                              # and dep.get_variable(internal:)
+  meson_version: '>= 0.55.0', # required for meson.add_dist_script(python3, ...)
+                              # and meson.add_install_script(python3, ...)
 )
 
 sigcxx_api_version = '2.0'
@@ -56,7 +56,7 @@ import os
 import sys
 sys.exit(os.path.isdir("@0@") or os.path.isfile("@0@"))
 '''.format(project_source_root / '.git')
-is_git_build = run_command(python3, '-c', cmd_py).returncode() != 0
+is_git_build = run_command(python3, '-c', cmd_py, check: false).returncode() != 0
 
 # Are we testing a dist tarball while it's being built?
 # There ought to be a better way. https://github.com/mesonbuild/meson/issues/6866
@@ -127,14 +127,16 @@ tutorial_custom_cmd = project_source_root / 'tools' / 'tutorial-custom-cmd.py'
 if maintainer_mode
   # Copy files to untracked/build_scripts and untracked/docs.
   run_command(mm_common_get, '--force', script_dir,
-    project_source_root / 'untracked' / 'docs')
+    project_source_root / 'untracked' / 'docs',
+    check: true,
+  )
 else
   cmd_py = '''
 import os
 import sys
 sys.exit(os.path.isfile("@0@"))
 '''.format(doc_reference)
-  file_exists = run_command(python3, '-c', cmd_py).returncode() != 0
+  file_exists = run_command(python3, '-c', cmd_py, check: false).returncode() != 0
   if not file_exists
     warning('Missing files in untracked/. You may have to enable maintainer-mode.')
   endif
@@ -144,7 +146,9 @@ endif
 doc_perl_prop = run_command(
   python3, doc_reference, 'get_script_property',
   '', # MMDOCTOOLDIR is not used
-  'requires_perl')
+  'requires_perl',
+  check: false,
+)
 if not (doc_perl_prop.returncode() == 0 and doc_perl_prop.stdout() == 'false')
   # Perl is required, if documentation shall be built.
   perl = find_program('perl', required: build_documentation)
@@ -246,13 +250,13 @@ subdir('docs/manual')
 if can_add_dist_script
   # Add a ChangeLog file to the distribution directory.
   meson.add_dist_script(
-    python3.path(), dist_changelog,
+    python3, dist_changelog,
     project_source_root,
   )
   # Add build scripts to the distribution directory, and delete .gitignore
   # files and an empty $MESON_PROJECT_DIST_ROOT/build/ directory.
   meson.add_dist_script(
-    python3.path(), dist_build_scripts,
+    python3, dist_build_scripts,
     project_source_root,
     'untracked' / 'build_scripts',
   )

sigc++/meson.build

@@ -141,6 +141,7 @@ else # not maintainer_mode
     meson.current_build_dir(),
     src_untracked_sigcxx,
     built_h_files + built_cc_files,
+    check: true,
   )
 
   untracked_built_cc_files = []
@@ -167,7 +168,7 @@ endif
 
 # Install built .h files.
 meson.add_install_script(
-  python3.path(), handle_built_files, 'install_built_h_files',
+  python3, handle_built_files, 'install_built_h_files',
   built_h_cc_dir,
   install_includedir / sigcxx_pcname / 'sigc++', # subdir below {prefix}
   built_h_files,
@@ -176,7 +177,7 @@ meson.add_install_script(
 if can_add_dist_script
   # Distribute built files.
   meson.add_dist_script(
-    python3.path(), handle_built_files, 'dist_built_files',
+    python3, handle_built_files, 'dist_built_files',
     built_h_cc_dir,
     untracked_sigcxx,
     built_h_files + built_cc_files,

tests/meson.build

@@ -59,7 +59,6 @@ foreach ex : test_programs
   exe_file = executable(ex_name, ex_sources,
     dependencies: sigcxx_own_dep,
     implicit_include_directories: false,
-    gui_app: false,
     build_by_default: true
   )
 
@@ -81,7 +80,6 @@ if can_benchmark
     exe_file = executable(ex_name, ex_sources,
       dependencies: [sigcxx_own_dep, benchmark_dep],
       implicit_include_directories: false,
-      gui_app: false,
       build_by_default: do_benchmark
     )