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config: dlopen() modules on-demand

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TODO: optimizations and proper cleanup

* We currently reload the shared library for each *instance* of the
  module, and we do it twice; once when verifying, and once when
  instantiating.

* The shared libraries are never dlclosed()
This commit is contained in:
Daniel Eklöf 2019-01-12 19:03:49 +01:00
parent 731ab848e1
commit 64b77a0efc
4 changed files with 170 additions and 113 deletions
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48
CMakeLists.txt
View file

@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.9)
cmake_minimum_required(VERSION 3.13)
project(f00bar C)
set(CMAKE_C_STANDARD_REQUIRED ON)
@ -19,11 +19,6 @@ pkg_check_modules(FONTCONFIG REQUIRED fontconfig) # Core
pkg_check_modules(CAIRO REQUIRED cairo cairo-xcb cairo-ft) # Core
pkg_check_modules(YAML REQUIRED yaml-0.1) # Core (configuration)
pkg_check_modules(XCB_XKB REQUIRED xcb-xkb) # Module/xkb
pkg_check_modules(JSON REQUIRED json-c) # Module/i3
pkg_check_modules(UDEV REQUIRED libudev) # Module/battery
pkg_check_modules(MPD REQUIRED libmpdclient) # Module/mpd
pkg_check_modules(ALSA REQUIRED alsa) # Module/alsa
add_executable(f00bar
bar.c bar.h
@ -50,32 +45,19 @@ add_executable(f00bar
particles/progress-bar.c particles/progress-bar.h
particles/ramp.c particles/ramp.h
particles/string.c particles/string.h
modules/alsa/alsa.c modules/alsa/alsa.h
modules/backlight/backlight.c modules/backlight/backlight.h
modules/battery/battery.c modules/battery/battery.h
modules/clock/clock.c modules/clock/clock.h
modules/i3/i3.c modules/i3/i3.h
modules/label/label.c modules/label/label.h
modules/mpd/mpd.c modules/mpd/mpd.h
modules/network/network.c modules/network/network.h
modules/removables/removables.c modules/removables/removables.h
modules/xkb/xkb.c modules/xkb/xkb.h
modules/xwindow/xwindow.c modules/xwindow/xwindow.h
)
# TODO: directory global
target_compile_definitions(f00bar PRIVATE _GNU_SOURCE)
# Make global symbols in f00bar visible to dlopen:ed plugins
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -rdynamic")
target_compile_options(f00bar PRIVATE
${XCB_CFLAGS_OTHER}
${FONTCONFIG_CFLAGS_OTHER}
${CAIRO_CFLAGS_OTHER}
${YAML_CFLAGS_OTHER}
${XCB_XKB_CFLAGS_OTHER}
${JSON_CFLAGS_OTHER}
${UDEV_CFLAGS_OTHER}
${MPD_CFLAGS_OTHER}
${ALSA_CFLAGS_OTHER}
)
target_include_directories(f00bar PRIVATE
@ -83,22 +65,22 @@ target_include_directories(f00bar PRIVATE
${FONTCONFIG_INCLUDE_DIRS}
${CAIRO_INCLUDE_DIRS}
${YAML_INCLUDE_DIRS}
${XCB_XKB_INCLUDE_DIRS}
${JSON_INCLUDE_DIRS}
${UDEV_INCLUDE_DIRS}
${MPD_INCLUDE_DIRS}
${ALSA_INCLUDE_DIRS}
)
target_link_libraries(f00bar
${CMAKE_THREAD_LIBS_INIT}
${CMAKE_DL_LIBS}
${XCB_LIBRARIES}
${FONTCONFIG_LIBRARIES}
${CAIRO_LIBRARIES}
${YAML_LIBRARIES}
${XCB_XKB_LIBRARIES}
${JSON_LIBRARIES}
${UDEV_LIBRARIES}
${MPD_LIBRARIES}
${ALSA_LIBRARIES}
)
add_library(module-sdk INTERFACE)
target_compile_definitions(module-sdk INTERFACE _GNU_SOURCE)
target_compile_options(module-sdk INTERFACE ${CAIRO_CFLAGS_OTHER})
target_include_directories(module-sdk INTERFACE ${CAIRO_INCLUDE_DIRS})
target_link_libraries(module-sdk INTERFACE ${CMAKE_THREAD_LIBS_INIT})
add_subdirectory(modules)