Overhaul the directory structure

In order to match the directory structure of traditional projects,
rename the top-level lib/ directory to src/libcamera/. Other libraries
developed as part of the project will later find a home in src/.

Split the libcamera header files in three categories: public headers
describing the public API in include/libcamera/, internal headers
describing the internal API in src/libcamera/include/, and private
headers local to one or a small number of compilation units along the
corresponding .cpp files. As no internal header exists yet the
src/libcamera/include/ directory is created empty as the build system
would fail otherwise.

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

meson.build

@@ -21,11 +21,11 @@ cpp_arguments = common_arguments
 add_project_arguments(c_arguments, language: 'c')
 add_project_arguments(cpp_arguments, language: 'cpp')
 
-inc = include_directories('include')
+libcamera_includes = include_directories('include')
 
 subdir('Documentation')
 subdir('include')
-subdir('lib')
+subdir('src')
 subdir('test')
 subdir('utils')
 

src/libcamera/meson.build

@@ -1,6 +1,11 @@
 sources = ['main.cpp']
 
+includes = [
+    libcamera_includes,
+    include_directories('include'),
+]
+
 libcamera = shared_library('camera',
                            sources,
                            install : true,
-                           include_directories : inc)
+                           include_directories : includes)

src/meson.build

@@ -0,0 +1 @@
+subdir('libcamera')

test/meson.build

@@ -1,5 +1,5 @@
 test_init = executable('test_init', 'init.cpp',
                        link_with : libcamera,
-                       include_directories : inc)
+                       include_directories : libcamera_includes)
 
 test('Initialisation test', test_init)