From 07248d1c3ea7cb071aafddebf0ba98221baa08d0 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 10 Dec 2022 11:04:10 -0500
Subject: Test header for warnings more strictly

---
 test/headers/.clang-tidy    | 10 ++++++++++
 test/headers/meson.build    | 43 +++++++++++++++++++++++++++++++++++++++++++
 test/headers/test_headers.c | 13 +++++++++++++
 test/meson.build            |  6 ++++++
 4 files changed, 72 insertions(+)
 create mode 100644 test/headers/.clang-tidy
 create mode 100644 test/headers/meson.build
 create mode 100644 test/headers/test_headers.c

(limited to 'test')

diff --git a/test/headers/.clang-tidy b/test/headers/.clang-tidy
new file mode 100644
index 0000000..924f1d5
--- /dev/null
+++ b/test/headers/.clang-tidy
@@ -0,0 +1,10 @@
+# Copyright 2020-2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: 0BSD OR ISC
+
+Checks: >
+  *,
+  -altera-*,
+  -llvmlibc-*,
+WarningsAsErrors: '*'
+HeaderFilterRegex: '.*/sratom\.h'
+FormatStyle: file
diff --git a/test/headers/meson.build b/test/headers/meson.build
new file mode 100644
index 0000000..aed2e43
--- /dev/null
+++ b/test/headers/meson.build
@@ -0,0 +1,43 @@
+# Copyright 2020-2022 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: 0BSD OR ISC
+
+header_c_suppressions = []
+
+if get_option('strict')
+  if cc.get_id() == 'clang'
+    header_c_suppressions += [
+      '-Wno-cast-align', # LV2
+      '-Wno-cast-qual', # LV2
+      '-Wno-declaration-after-statement', # LV2
+    ]
+  elif cc.get_id() == 'gcc'
+    header_c_suppressions += [
+      '-Wno-cast-align', # LV2
+      '-Wno-cast-qual', # LV2
+      '-Wno-padded', # Serd
+      '-Wno-sign-conversion', # LV2
+      '-Wno-unused-const-variable', # Serd
+    ]
+  elif cc.get_id() == 'msvc'
+    header_c_suppressions += [
+      '/wd4820', # padding added after construct
+    ]
+  endif
+endif
+
+if cc.get_id() == 'clang'
+  header_c_suppressions += [
+    '-Wno-nullability-extension',
+  ]
+endif
+
+test(
+  'headers',
+  executable(
+    'test_headers',
+    files('test_headers.c'),
+    c_args: header_c_suppressions,
+    dependencies: [sratom_dep],
+  ),
+  suite: 'unit',
+)
diff --git a/test/headers/test_headers.c b/test/headers/test_headers.c
new file mode 100644
index 0000000..f6b110f
--- /dev/null
+++ b/test/headers/test_headers.c
@@ -0,0 +1,13 @@
+// Copyright 2022 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#include "sratom/sratom.h" // IWYU pragma: keep
+
+#ifdef __GNUC__
+__attribute__((const))
+#endif
+int
+main(void)
+{
+  return 0;
+}
diff --git a/test/meson.build b/test/meson.build
index d95c259..841b8af 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -23,6 +23,12 @@ if get_option('strict')
   endif
 endif
 
+###################
+# Header Warnings #
+###################
+
+subdir('headers')
+
 ##############
 # Unit Tests #
 ##############
-- 
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