libcamera: Consolidate tracepoint header in libcamera_internal_headers

The libcamera_tracepoint_header variable stores the tracepoints.h header
custom target, for the sole purpose of being listed as a source of the
libcamera shared library, through the libcamera_internal_sources
variable.

Add the tracepoints.h header to libcamera_internal_headers instead of
libcamera_internal_sources, and list libcamera_internal_headers as a
source of the shared library, alongside libcamera_internal_sources. This
makes libcamera_internal_sources contain sources only, improving clarity
of the build system variables.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

include/libcamera/internal/meson.build

@@ -2,13 +2,6 @@
 
 subdir('tracepoints')
 
-libcamera_tracepoint_header = custom_target(
-    'tp_header',
-    input : ['tracepoints.h.in', tracepoint_files],
-    output : 'tracepoints.h',
-    command : [gen_tracepoints_header, include_build_dir, '@OUTPUT@', '@INPUT@'],
-)
-
 libcamera_internal_headers = files([
     'bayer_format.h',
     'byte_stream_buffer.h',
@@ -51,5 +44,14 @@ libcamera_internal_headers = files([
     'yaml_parser.h',
 ])
 
+tracepoints_h = custom_target(
+    'tp_header',
+    input : ['tracepoints.h.in', tracepoint_files],
+    output : 'tracepoints.h',
+    command : [gen_tracepoints_header, include_build_dir, '@OUTPUT@', '@INPUT@'],
+)
+
+libcamera_internal_headers += tracepoints_h
+
 subdir('converter')
 subdir('software_isp')

src/libcamera/meson.build

@@ -55,7 +55,6 @@ libcamera_internal_sources = files([
 ])
 
 libcamera_public_sources += libcamera_public_headers
-libcamera_internal_sources += libcamera_tracepoint_header
 
 includes = [
     libcamera_includes,
@@ -196,6 +195,7 @@ libcamera = shared_library('libcamera',
                            [
                                libcamera_public_sources,
                                libcamera_ipa_headers,
+                               libcamera_internal_headers,
                                libcamera_internal_sources,
                            ],
                            version : libcamera_version,