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: ...).

8 files changed, 21 insertions, 19 deletions

diff --git a/.github/workflows/meson-clang-10.yml b/.github/workflows/meson-clang-10.yml
index fda48da..13f611b 100644
--- a/.github/workflows/meson-clang-10.yml
+++ b/.github/workflows/meson-clang-10.yml
@@ -15,9 +15,9 @@ jobs:
         export ENV DEBIAN_FRONTEND=noninteractive
         sudo apt update
         sudo apt install libxml2-utils docbook5-xml docbook-xsl mm-common clang-10 ninja-build python3-setuptools python3-pip --yes
-        # Ubuntu 20.04 contains meson 0.53.2, but libsigc++ requires meson >= 0.54.0.
+        # Ubuntu 20.04 contains meson 0.53.2, but libsigc++ requires meson >= 0.55.0.
         # Install it with pip3 instead of apt.
-        sudo pip3 install "meson>=0.54.0"
+        sudo pip3 install "meson>=0.55.0"
         export CXX=clang++-10
         meson -Dwarnings=fatal _build
         cd _build
diff --git a/.github/workflows/meson-gcc-9.yml b/.github/workflows/meson-gcc-9.yml
index 0543b32..96b160f 100644
--- a/.github/workflows/meson-gcc-9.yml
+++ b/.github/workflows/meson-gcc-9.yml
@@ -15,9 +15,9 @@ jobs:
         export ENV DEBIAN_FRONTEND=noninteractive
         sudo apt update
         sudo apt install libxml2-utils docbook5-xml docbook-xsl mm-common g++-9 ninja-build python3-setuptools python3-pip --yes
-        # Ubuntu 20.04 contains meson 0.53.2, but libsigc++ requires meson >= 0.54.0.
+        # Ubuntu 20.04 contains meson 0.53.2, but libsigc++ requires meson >= 0.55.0.
         # Install it with pip3 instead of apt.
-        sudo pip3 install "meson>=0.54.0"
+        sudo pip3 install "meson>=0.55.0"
         export CXX=g++-9
         meson -Dwarnings=fatal _build
         cd _build
diff --git a/MSVC_NMake/meson.build b/MSVC_NMake/meson.build
index f9ddc35..09078b3 100644
--- a/MSVC_NMake/meson.build
+++ b/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',
diff --git a/docs/docs/manual/meson.build b/docs/docs/manual/meson.build
index e632131..8c721c8 100644
--- a/docs/docs/manual/meson.build
+++ b/docs/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,
@@ -95,7 +96,7 @@ 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,
diff --git a/docs/docs/reference/meson.build b/docs/docs/reference/meson.build
index 397e975..e0c0c4b 100644
--- a/docs/docs/reference/meson.build
+++ b/docs/docs/reference/meson.build
@@ -120,7 +120,7 @@ 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,
@@ -131,7 +131,7 @@ 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(),
diff --git a/examples/meson.build b/examples/meson.build
index 3779f72..c55bfdd 100644
--- a/examples/meson.build
+++ b/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
diff --git a/meson.build b/meson.build
index 2e30933..bc2e1d8 100644
--- a/meson.build
+++ b/meson.build
@@ -7,8 +7,8 @@ project('libsigc++', 'cpp',
     'cpp_std=c++17',
     '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 = '3.0'
@@ -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
@@ -130,14 +130,16 @@ tutorial_custom_cmd = project_source_root / 'tools' / 'tutorial-custom-cmd.py'
 if maintainer_mode
   # Copy files to untracked/build_scripts and untracked/docs/docs.
   run_command(mm_common_get, '--force', script_dir,
-    project_source_root / 'untracked' / 'docs' / 'docs')
+    project_source_root / 'untracked' / 'docs' / '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/. ' + \
     'Enable maintainer-mode if you want to build documentation or create a dist tarball.')
@@ -148,7 +150,9 @@ 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)
@@ -243,13 +247,13 @@ subdir('docs/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',
   )
diff --git a/tests/meson.build b/tests/meson.build
index 5b6b0c7..87605a4 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -67,7 +67,6 @@ 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
   )
 
@@ -89,7 +88,6 @@ 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
     )