[libcamera-devel] [PATCH] libcamera: Auto-generate libcamera.h

[Laurent Pinchart]

As shown by two missing includes, keeping the libcamera.h file in sync
when adding or removing headers is an error-prone manual process.
Automate it by generating the header automatically.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 include/libcamera/gen-header.sh | 26 ++++++++++++++++++++++++++
 include/libcamera/libcamera.h   | 20 --------------------
 include/libcamera/meson.build   | 10 +++++++++-
 3 files changed, 35 insertions(+), 21 deletions(-)
 create mode 100755 include/libcamera/gen-header.sh
 delete mode 100644 include/libcamera/libcamera.h

diff --git a/include/libcamera/gen-header.sh b/include/libcamera/gen-header.sh
new file mode 100755
index 000000000000..ea5b79a62520
--- /dev/null
+++ b/include/libcamera/gen-header.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+src_dir=$1
+dst_file=$2
+
+cat <<EOF > $dst_file
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/* This file is auto-generated, do not edit! */
+/*
+ * Copyright (C) 2018, Google Inc.
+ *
+ * libcamera.h - libcamera public API
+ */
+#ifndef __LIBCAMERA_LIBCAMERA_H__
+#define __LIBCAMERA_LIBCAMERA_H__
+
+EOF
+
+for header in $src_dir/*.h ; do
+	echo "#include <libcamera/$(basename $header)>" >> $dst_file
+done
+
+cat <<EOF >> $dst_file
+
+#endif /* __LIBCAMERA_LIBCAMERA_H__ */
+EOF
diff --git a/include/libcamera/libcamera.h b/include/libcamera/libcamera.h
deleted file mode 100644
index dda576e906fb..000000000000
--- a/include/libcamera/libcamera.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2018, Google Inc.
- *
- * libcamera.h - libcamera public API
- */
-#ifndef __LIBCAMERA_LIBCAMERA_H__
-#define __LIBCAMERA_LIBCAMERA_H__
-
-#include <libcamera/buffer.h>
-#include <libcamera/camera.h>
-#include <libcamera/camera_manager.h>
-#include <libcamera/event_dispatcher.h>
-#include <libcamera/event_notifier.h>
-#include <libcamera/request.h>
-#include <libcamera/signal.h>
-#include <libcamera/stream.h>
-#include <libcamera/timer.h>
-
-#endif /* __LIBCAMERA_LIBCAMERA_H__ */
diff --git a/include/libcamera/meson.build b/include/libcamera/meson.build
index 83d226ac5078..46aff0b6bc2f 100644
--- a/include/libcamera/meson.build
+++ b/include/libcamera/meson.build
@@ -5,7 +5,6 @@ libcamera_api = files([
     'event_dispatcher.h',
     'event_notifier.h',
     'geometry.h',
-    'libcamera.h',
     'object.h',
     'request.h',
     'signal.h',
@@ -13,5 +12,14 @@ libcamera_api = files([
     'timer.h',
 ])
 
+gen_header = join_paths(meson.current_source_dir(), 'gen-header.sh')
+
+custom_target('gen-header',
+	      input: meson.current_source_dir(),
+              output: 'libcamera.h',
+	      command: [gen_header, '@INPUT@', '@OUTPUT@'],
+	      install: true,
+	      install_dir: 'include/libcamera')
+
 install_headers(libcamera_api,
                 subdir : 'libcamera')
-- 
Regards,

Laurent Pinchart