Share object files between powder/render/font

I'm not sure why we weren't using static_libraries to begin with; most likely because the object files (as opposed to the sources) were not possible to share due to different sets of macros being defined in cpp_args, see 3a591b8539 to 4f0c365e05.

meson.build

@@ -459,9 +459,7 @@ foreach embedded_file : embedded_files
 endforeach
 
 powder_files += powder_external_files
-powder_files += data_files
-render_files += data_files
-font_files += data_files
+common_files += data_files
 
 if host_platform == 'emscripten'
 	project_link_args += [
@@ -487,17 +485,49 @@ endif
 
 clang_tidy_sources = []
 
+sta_libs = {}
+foreach sta_info : [
+	[ 'common', common_files, [
+		host_platform == 'android' ? sdl2_dep : [],
+		png_dep,
+		zlib_dep,
+		bzip2_dep,
+	] ],
+	[ 'gui', gui_files, [
+		sdl2_dep,
+	] ],
+	[ 'simulation', simulation_files, [
+		json_dep,
+	] ],
+]
+	sta_name = sta_info[0]
+	sta_srcs = sta_info[1]
+	sta_deps = sta_info[2]
+	sta_libs += { sta_name: declare_dependency(
+		include_directories: project_inc,
+		link_with: static_library(
+			sta_name,
+			sources: sta_srcs,
+			include_directories: project_inc,
+			cpp_args: project_cpp_args,
+			override_options: target_options,
+			pic: host_platform == 'android',
+			dependencies: sta_deps,
+		),
+		dependencies: sta_deps,
+	) }
+	clang_tidy_sources += sta_srcs
+endforeach
+
 if get_option('build_powder')
 	powder_deps += project_deps + [
 		threads_dep,
-		zlib_dep,
-		png_dep,
-		sdl2_dep,
 		lua_dep,
 		curl_dep,
 		fftw_dep,
-		bzip2_dep,
-		json_dep,
+		sta_libs['common'],
+		sta_libs['gui'],
+		sta_libs['simulation'],
 	]
 	if host_platform == 'android'
 		powder_sha = shared_library(
@@ -530,15 +560,13 @@ if get_option('build_powder')
 endif
 
 if get_option('build_render')
-	if host_platform == 'emscripten'
-		error('render does not target emscripten')
+	if host_platform in [ 'android', 'emscripten' ]
+		error('render does not target @0@'.format(host_platform))
 	endif
 	render_deps = project_deps + [
 		threads_dep,
-		zlib_dep,
-		bzip2_dep,
-		json_dep,
-		png_dep,
+		sta_libs['common'],
+		sta_libs['simulation'],
 	]
 	render_link_args = project_link_args
 	if host_platform == 'linux' and is_static
@@ -559,16 +587,13 @@ if get_option('build_render')
 endif
 
 if get_option('build_font')
-	if host_platform == 'emscripten'
-		error('font does not target emscripten')
+	if host_platform in [ 'android', 'emscripten' ]
+		error('font does not target @0@'.format(host_platform))
 	endif
 	font_deps = project_deps + [
 		threads_dep,
-		zlib_dep,
-		png_dep,
-		sdl2_dep,
-		bzip2_dep,
-		json_dep,
+		sta_libs['common'],
+		sta_libs['gui'],
 	]
 	executable(
 		'font',

src/common/clipboard/Local.cpp

@@ -0,0 +1,36 @@
+#include "Clipboard.h"
+#include "client/GameSave.h"
+
+namespace Clipboard
+{
+	void SetClipboardData(std::unique_ptr<GameSave> data)
+	{
+	}
+
+	const GameSave *GetClipboardData()
+	{
+		return nullptr;
+	}
+
+	void Init()
+	{
+	}
+
+	bool GetEnabled()
+	{
+		return false;
+	}
+
+	void SetEnabled(bool)
+	{
+	}
+
+	void RecreateWindow()
+	{
+	}
+
+	std::optional<String> Explanation()
+	{
+		return std::nullopt;
+	}
+}

src/common/clipboard/Null.cpp

@@ -1,36 +1,12 @@
 #include "Clipboard.h"
-#include "client/GameSave.h"
 
 namespace Clipboard
 {
-	void SetClipboardData(std::unique_ptr<GameSave> data)
-	{
-	}
-
-	const GameSave *GetClipboardData()
-	{
-		return nullptr;
-	}
-
 	void Init()
 	{
 	}
 
-	bool GetEnabled()
-	{
-		return false;
-	}
-
-	void SetEnabled(bool)
-	{
-	}
-
 	void RecreateWindow()
 	{
 	}
-
-	std::optional<String> Explanation()
-	{
-		return std::nullopt;
-	}
 }

src/common/clipboard/meson.build

@@ -33,7 +33,7 @@ if platform_clipboard
 	endif
 	powder_files += files('Dynamic.cpp')
 else
-	powder_files += files('Null.cpp')
+	powder_files += files('Local.cpp')
 endif
 render_files += files('Null.cpp')
 font_files += files('Null.cpp')

src/graphics/meson.build

@@ -8,6 +8,6 @@ powder_graphics_files = files(
 	'Renderer.cpp',
 )
 
-powder_files += graphics_files + powder_graphics_files
-render_files += graphics_files + powder_graphics_files
-font_files += graphics_files
+common_files += graphics_files
+powder_files += powder_graphics_files
+render_files += powder_graphics_files

src/gui/meson.build

@@ -21,6 +21,3 @@ subdir('save')
 subdir('search')
 subdir('tags')
 subdir('update')
-
-powder_files += gui_files
-font_files += gui_files

src/meson.build

@@ -203,10 +203,6 @@ subdir('resampler')
 subdir('simulation')
 subdir('tasks')
 
-powder_files += common_files
-render_files += common_files
-font_files += common_files
-
 simulation_elem_defs = []
 foreach elem_name_id : simulation_elem_ids
 	simulation_elem_defs += 'ELEMENT_DEFINE(' + elem_name_id[0] + ', ' + elem_name_id[1].to_string() + ');'

src/resampler/meson.build

@@ -2,6 +2,4 @@ resampler_files = files(
 	'resampler.cpp',
 )
 
-powder_files += resampler_files
-render_files += resampler_files
-font_files += resampler_files
+common_files += resampler_files

src/simulation/meson.build

@@ -16,9 +16,6 @@ subdir('elements')
 subdir('simtools')
 subdir('gravity')
 
-powder_files += simulation_files
-render_files += simulation_files
-
 powder_files += files(
 	'AccessPropertyParse.cpp',
 	'Editing.cpp',