Use cppcheck working directory

This allows for better analysis, and adds a cache to improve checking times,
especially on repeated runs.

2 files changed, 43 insertions, 38 deletions

diff --git a/test/lint/meson.build b/test/lint/meson.build
new file mode 100644
index 0000000..13966cf
--- /dev/null
+++ b/test/lint/meson.build
@@ -0,0 +1,42 @@
+# Copyright 2024 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: 0BSD OR ISC
+
+if not meson.is_subproject()
+  # Check release metadata
+  autoship = find_program('autoship', required: get_option('tests'))
+  if autoship.found()
+    test('autoship', autoship, args: ['test', zix_src_root], suite: 'data')
+  endif
+
+  # Check code with cppcheck
+  cppcheck = find_program('cppcheck', required: false)
+  if cppcheck.found()
+    compdb_path = join_paths(zix_build_root, 'compile_commands.json')
+    cppcheck_args = [
+      '--cppcheck-build-dir=' + meson.current_build_dir(),
+      '--enable=warning,style,performance,portability',
+      '--error-exitcode=1',
+      '--project=' + compdb_path,
+      '--suppress=constParameterCallback',
+      '--suppress=constParameterPointer',
+      '--suppress=normalCheckLevelMaxBranches',
+      '--suppress=unreadVariable',
+      '-q',
+    ]
+    test('cppcheck', cppcheck, args: cppcheck_args, suite: 'code')
+  endif
+endif
+
+# Check licensing metadata
+reuse = find_program('reuse', required: get_option('tests'))
+if reuse.found()
+  reuse_args = ['--root', zix_src_root, 'lint']
+  test('REUSE', reuse, args: reuse_args, suite: 'data')
+endif
+
+# Check code formatting
+clang_format = find_program('clang-format', required: false)
+if clang_format.found()
+  clang_format_args = ['--Werror', '--dry-run'] + c_headers + sources
+  test('format', clang_format, args: clang_format_args, suite: 'code')
+endif
diff --git a/test/meson.build b/test/meson.build
index 63141bb..32cc736 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -6,44 +6,7 @@
 ########
 
 if get_option('lint')
-  if not meson.is_subproject()
-    # Check release metadata
-    autoship = find_program('autoship', required: get_option('tests'))
-    if autoship.found()
-      test('autoship', autoship, args: ['test', zix_src_root], suite: 'data')
-    endif
-
-    # Check code with cppcheck
-    cppcheck = find_program('cppcheck', required: false)
-    if cppcheck.found()
-      compdb_path = join_paths(zix_build_root, 'compile_commands.json')
-      cppcheck_args = [
-        '--enable=warning,style,performance,portability',
-        '--error-exitcode=1',
-        '--project=' + compdb_path,
-        '--suppress=constParameterCallback',
-        '--suppress=constParameterPointer',
-        '--suppress=normalCheckLevelMaxBranches',
-        '--suppress=unreadVariable',
-        '-q',
-      ]
-      test('cppcheck', cppcheck, args: cppcheck_args, suite: 'code')
-    endif
-  endif
-
-  # Check licensing metadata
-  reuse = find_program('reuse', required: get_option('tests'))
-  if reuse.found()
-    reuse_args = ['--root', zix_src_root, 'lint']
-    test('REUSE', reuse, args: reuse_args, suite: 'data')
-  endif
-
-  # Check code formatting
-  clang_format = find_program('clang-format', required: false)
-  if clang_format.found()
-    clang_format_args = ['--Werror', '--dry-run'] + c_headers + sources
-    test('format', clang_format, args: clang_format_args, suite: 'code')
-  endif
+  subdir('lint')
 endif
 
 ##############