compilation times improvement

.gitignore

@@ -62,4 +62,6 @@
 
 build/**
 
-# End of https://www.toptal.com/developers/gitignore/api/c++,meson,ninja,linux
+.cache/**
+
+# End of https://www.toptal.com/developers/gitignore/api/c++,meson,ninja,linux

meson.build

@@ -33,7 +33,7 @@ libinput       = dependency('libinput', version: '>=1.7.0')
 pixman         = dependency('pixman-1')
 xkbcommon      = dependency('xkbcommon')
 libdl          = meson.get_compiler('cpp').find_library('dl')
-json           = dependency('nlohmann_json', version: '>= 3.11.2')
+json           = dependency('jsoncpp')
 
 # We're not to use system wlroots: So we'll use the subproject
 if get_option('use_system_wlroots').disabled()
@@ -145,7 +145,7 @@ cpp = meson.get_compiler('cpp')
 # -E is for RTTI/dynamic_cast across plugins
 add_project_link_arguments(['-rdynamic', '-Wl,-E'], language: 'cpp')
 
-project_args = ['-DWLR_USE_UNSTABLE']
+project_args = ['-DWLR_USE_UNSTABLE', '-ftime-trace']
 # Needed for dlclose to actually free plugin memory on gcc+glibc
 if cpp.has_argument('-fno-gnu-unique')
   project_args += '-fno-gnu-unique'
@@ -196,7 +196,7 @@ else
   print_trace = false
 endif
 
-add_project_arguments(['-DWF_USE_CONFIG_H'], language: ['cpp', 'c'])
+add_project_arguments(['-DWF_USE_CONFIG_H', '-ftime-trace'], language: ['cpp', 'c'])
 configure_file(input: 'config.h.in',
                output: 'config.h',
                install: true,

meson_options.txt

@@ -6,3 +6,4 @@ option('xwayland', type: 'feature', value: 'auto', description: 'Build with xway
 option('default_config_backend', type: 'string', value: 'default', description: 'Default configuration backend to use')
 option('print_trace', type: 'boolean', value: true, description: 'Print stack trace in debug logs (disables coredump)')
 option('tests', type: 'feature', value: 'auto', description: 'Enable unit tests')
+option('custom_pch', type: 'boolean', value: false, description: 'Use custom PCH for plugins. May not work with all compilers and setups.')

plugins/animate/meson.build

@@ -1,14 +1,20 @@
 dependencies = [wlroots, pixman, wfconfig]
+animate_pch_deps = [plugin_pch_dep]
+animate_pch_flags = plugin_pch_args
 
 if get_option('enable_openmp')
    dependencies += [dependency('openmp')]
+   # PCH does not have openmp enabled
+   animate_pch_deps = []
+   animate_pch_args = []
 endif
 
 animiate = shared_module('animate',
                          ['animate.cpp',
                           'fire/particle.cpp',
                           'fire/fire.cpp'],
                          include_directories: [wayfire_api_inc, wayfire_conf_inc],
-                         dependencies: dependencies,
+                         dependencies: dependencies + animate_pch_deps,
+                         cpp_args: animate_pch_args,
                          install: true,
                          install_dir: join_paths(get_option('libdir'), 'wayfire'))

plugins/blur/blur.cpp

@@ -20,6 +20,7 @@
 #include "wayfire/scene-render.hpp"
 #include "wayfire/scene.hpp"
 #include "wayfire/signal-provider.hpp"
+#include <list>
 
 using blur_algorithm_provider =
     std::function<nonstd::observer_ptr<wf_blur_base>()>;

plugins/blur/meson.build

@@ -1,13 +1,15 @@
 blur_base = shared_library('wayfire-blur-base',
      ['blur-base.cpp', 'box.cpp', 'gaussian.cpp', 'kawase.cpp', 'bokeh.cpp'],
      include_directories: [wayfire_api_inc, wayfire_conf_inc],
-     dependencies: [wlroots, pixman, wfconfig],
+     dependencies: [wlroots, pixman, wfconfig, plugin_pch_dep],
+     cpp_args: plugin_pch_args,
      override_options: ['b_lundef=false'],
      install: true)
 install_headers(['blur.hpp'], subdir: 'wayfire/plugins/blur')
 
 blur = shared_module('blur', ['blur.cpp'],
      link_with: blur_base,
      include_directories: [wayfire_api_inc, wayfire_conf_inc],
-     dependencies: [wlroots, pixman, wfconfig],
+     dependencies: [wlroots, pixman, wfconfig, plugin_pch_dep],
+     cpp_args: plugin_pch_args,
      install: true, install_dir: join_paths(get_option('libdir'), 'wayfire'))

plugins/common/meson.build

@@ -1,2 +1,18 @@
 plugins_common_inc = include_directories('.')
 install_subdir('wayfire', install_dir: get_option('includedir'))
+
+workspace_wall = static_library('wayfire-workspace-wall',
+     ['workspace-wall.cpp'],
+     include_directories: [wayfire_api_inc, wayfire_conf_inc],
+     dependencies: [wlroots, pixman, wfconfig, plugin_pch_dep],
+     cpp_args: plugin_pch_args,
+     override_options: ['b_lundef=false'],
+     install: true)
+
+move_drag_interface = static_library('wayfire-move-drag-interface',
+     ['move-drag-interface.cpp'],
+     include_directories: [wayfire_api_inc, wayfire_conf_inc],
+     dependencies: [wlroots, pixman, wfconfig, plugin_pch_dep],
+     cpp_args: plugin_pch_args,
+     override_options: ['b_lundef=false'],
+     install: true)