build: make libconfig mandatory

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

.circleci/config.yml

@@ -72,7 +72,7 @@ jobs:
     executor: e
     steps:
       - build:
-          build-config: -Dopengl=false -Ddbus=false -Dregex=false -Dconfig_file=false
+          build-config: -Dopengl=false -Ddbus=false -Dregex=false
   release:
     executor: e
     steps:
@@ -104,7 +104,7 @@ jobs:
     steps:
       - build:
           cc: clang
-          build-config: -Dopengl=false -Ddbus=false -Dregex=false -Dconfig_file=false
+          build-config: -Dopengl=false -Ddbus=false -Dregex=false
   clang_nogl:
     executor: e
     steps:

CHANGELOG.md

@@ -40,6 +40,7 @@
 
 * picom now uses some OpenGL 4.3 features.
 * picom now optionally depends on `rtkit` at runtime to give itself realtime scheduling priority.
+* `libconfig` is now a mandatory dependency.
 
 # v11.2 (2024-Feb-13)
 

README.md

@@ -39,8 +39,8 @@ Assuming you already have all the usual building tools installed (e.g. gcc, pyth
 * xcb-present
 * xcb-glx
 * pixman
+* libconfig
 * libdbus (optional, disable with the `-Ddbus=false` meson configure flag)
-* libconfig (optional, disable with the `-Dconfig_file=false` meson configure flag)
 * libGL, libEGL, libepoxy (optional, disable with the `-Dopengl=false` meson configure flag)
 * libpcre2 (optional, disable with the `-Dregex=false` meson configure flag)
 * libev

meson_options.txt

@@ -1,5 +1,4 @@
 option('sanitize', type: 'boolean', value: false, description: 'Build with sanitizers enabled (deprecated)')
-option('config_file', type: 'boolean', value: true, description: 'Enable config file support')
 option('regex', type: 'boolean', value: true, description: 'Enable regex support in window conditions')
 
 option('vsync_drm', type: 'boolean', value: false, description: 'Enable support for using drm for vsync')

src/config.c

@@ -887,15 +887,7 @@ char *parse_config(options_t *opt, const char *config_file, bool *shadow_enable,
 	// clang-format on
 
 	char *ret = NULL;
-#ifdef CONFIG_LIBCONFIG
 	ret = parse_config_libconfig(opt, config_file, shadow_enable, fading_enable,
 	                             hasneg, winopt_mask);
-#else
-	(void)config_file;
-	(void)shadow_enable;
-	(void)fading_enable;
-	(void)hasneg;
-	(void)winopt_mask;
-#endif
 	return ret;
 }

src/config.h

@@ -17,9 +17,7 @@
 
 #include "uthash_extra.h"
 
-#ifdef CONFIG_LIBCONFIG
 #include <libconfig.h>
-#endif
 
 #include "compiler.h"
 #include "kernel.h"
@@ -311,7 +309,6 @@ void parse_debug_options(struct debug_options *);
  */
 bool condlst_add(c2_lptr_t **, const char *);
 
-#ifdef CONFIG_LIBCONFIG
 const char *xdg_config_home(void);
 char **xdg_config_dirs(void);
 
@@ -326,7 +323,6 @@ char **xdg_config_dirs(void);
 char *
 parse_config_libconfig(options_t *, const char *config_file, bool *shadow_enable,
                        bool *fading_enable, bool *hasneg, win_option_mask_t *winopt_mask);
-#endif
 
 void set_default_winopts(options_t *, win_option_mask_t *, bool shadow_enable,
                          bool fading_enable, bool blur_enable);

src/inspect.h

@@ -3,13 +3,5 @@
 
 #pragma once
 #include <xcb/xcb.h>
-#include "compiler.h"
 
-#ifdef CONFIG_LIBCONFIG
 int inspect_main(int argc, char **argv, const char *config_file);
-#else
-static inline int inspect_main(int argc attr_unused, char **argv attr_unused,
-                               const char *config_file attr_unused) {
-	return 0;
-}
-#endif

src/meson.build

@@ -11,7 +11,7 @@ srcs = [ files('picom.c', 'win.c', 'c2.c', 'x.c', 'config.c', 'vsync.c', 'utils.
                'diagnostic.c', 'string_utils.c', 'render.c', 'kernel.c', 'log.c',
                'options.c', 'event.c', 'cache.c', 'atom.c', 'file_watch.c', 'statistics.c',
                'vblank.c', 'transition.c', 'wm.c', 'renderer/layout.c', 'renderer/command_builder.c',
-               'renderer/renderer.c', 'renderer/damage.c') ]
+               'renderer/renderer.c', 'renderer/damage.c', 'config_libconfig.c', 'inspect.c') ]
 picom_inc = include_directories('.')
 
 cflags = []
@@ -34,6 +34,7 @@ endforeach
 foreach i : required_xcb_packages
 	base_deps += [dependency(i, version: '>=1.12.0', required: true)]
 endforeach
+base_deps += [dependency('libconfig', version: '>=1.4', required: true)]
 
 if not cc.has_header('uthash.h')
   error('Dependency uthash not found')
@@ -41,12 +42,6 @@ endif
 
 deps = []
 
-if get_option('config_file')
-	deps += [dependency('libconfig', version: '>=1.4', required: true)]
-
-	cflags += ['-DCONFIG_LIBCONFIG']
-	srcs += [ 'config_libconfig.c', 'inspect.c' ]
-endif
 if get_option('regex')
 	pcre = dependency('libpcre2-8', required: true)
 	cflags += ['-DCONFIG_REGEX_PCRE']
@@ -97,9 +92,7 @@ if get_option('unittest')
 	test('picom unittest', picom, args: [ '--unittest' ])
 endif
 
-if get_option('config_file')
-	install_symlink('picom-inspect', install_dir: 'bin', pointing_to: 'picom')
-endif
+install_symlink('picom-inspect', install_dir: 'bin', pointing_to: 'picom')
 
 if cc.has_argument('-fsanitize=fuzzer')
   c2_fuzz = executable('c2_fuzz', srcs + ['fuzzer/c2.c'],

src/options.c

@@ -34,9 +34,7 @@ struct picom_option {
 // clang-format off
 static const struct option *longopts = NULL;
 static const struct picom_option picom_options[] = {
-#ifdef CONFIG_LIBCONFIG
     {"config"                      , required_argument, 256, NULL          , "Path to the configuration file."},
-#endif
     {"help"                        , no_argument      , 'h', NULL          , "Print this help message and exit."},
     {"shadow-radius"               , required_argument, 'r', NULL          , "The blur radius for shadows. (default 12)"},
     {"shadow-opacity"              , required_argument, 'o', NULL          , "The translucency for shadows. (default .75)"},