fix: Make pc files not include -Ilibx52/ in CFLAGS

Modern libraries do not handhold the user into just calling the header,
instead they namespace it, e.g. libevdev/libevdev.h. Because we already
install our headers under the libx52/ directory, having the pkg-config
files specify `-Ilibx52/` is a legacy from the old days, and should no
longer be used.

This commit also adds pkg-config files for x52dcomm and vkm, installing
them in their proper locations.

daemon/meson.build

@@ -15,6 +15,12 @@ lib_libx52dcomm = library('x52dcomm', libx52dcomm_sources,
   install: true,
   include_directories: includes)
 
+pkgconfig.generate(lib_libx52dcomm,
+  name: 'x52dcomm',
+  description: 'Client library for communicating with the x52d X52 daemon.',
+  version: libx52dcomm_version,
+)
+
 x52d_sources = [
   'x52d_main.c',
   'x52d_config_parser.c',

libx52/meson.build

@@ -20,7 +20,6 @@ install_headers('libx52.h', subdir: meson.project_name())
 pkgconfig.generate(lib_libx52,
   name: 'libx52',
   description: 'Linux/Unix library to control Saitek X52/X52Pro joystick extended functionality.',
-  subdirs: meson.project_name(),
   version: libx52_version)
 
 # Unit tests for libx52

libx52io/meson.build

@@ -19,7 +19,6 @@ install_headers('libx52io.h', subdir: meson.project_name())
 pkgconfig.generate(lib_libx52io,
   name: 'libx52io',
   description: 'Linux/Unix library to read and parse X52 input',
-  subdirs: meson.project_name(),
   version: libx52io_version,
 )
 

libx52util/meson.build

@@ -20,7 +20,6 @@ install_headers('libx52util.h', subdir: meson.project_name())
 pkgconfig.generate(lib_libx52util,
   name: 'libx52util',
   description: 'Extra utility functions to manage X52 extended functionality',
-  subdirs: meson.project_name(),
   version: libx52util_version,
 )
 

vkm/meson.build

@@ -56,6 +56,5 @@ endif
 install_headers('vkm.h', subdir: 'vkm')
 pkgconfig.generate(lib_vkm,
   name: 'vkm',
-  description: 'Linux/Unix library to control Saitek X52/X52Pro joystick extended functionality.',
-  subdirs: meson.project_name(),
+  description: 'Virtual keyboard/mouse interface library for injecting events into the host OS.',
   version: vkm_version)