Change build system to meson

meson.build

@@ -0,0 +1,96 @@
+project(
+	'glava',
+	'c',
+	version: run_command('git', 'describe', '--tags').stdout().strip()
+)
+
+cc = meson.get_compiler('c')
+
+if get_option('buildtype').startswith('debug')
+	add_project_arguments(
+		'-O0',
+		'-ggdb',
+		'-Wall',
+		'-DGLAVA_DEBUG',
+		language: 'c'
+	)
+	if get_option('glad')
+		run_command('./glad_generate.sh', 'c-debug')
+	endif
+else
+	add_project_arguments(
+		'-O2',
+		'-Wstringpop-overflow=0',
+		language: 'c'
+	)
+	if get_option('glad')
+		run_command('./glad_generate.sh')
+	endif
+endif
+
+glava_dependencies = [
+	dependency('threads'),
+	cc.find_library('pulse'),
+	cc.find_library('pulse-simple'),
+	cc.find_library('dl'),
+	cc.find_library('m'),
+	cc.find_library('X11'),
+	cc.find_library('Xext')
+]
+
+glava_version = meson.project_version()
+if glava_version == ''
+	glava_version = 'unknown'
+endif
+
+shaderdir = get_option('shaderdir')
+if host_machine.system() == 'linux'
+	add_project_arguments(
+		'-DGLAVA_UNIX',
+		language: 'c'
+	)
+endif
+if host_machine.system() == 'darwin'
+	add_project_arguments(
+		'-DGLAVA_OSX',
+		language: 'c'
+	)
+	shaderdir = '/Library/glava/'
+endif
+
+if get_option('enable_glfw')
+	add_project_arguments(
+		'-DGLAVA_GLFW',
+		language: 'c'
+	)
+	glava_dependencies += dependency('glfw')
+endif
+
+if not get_option('disable_glx')
+	add_project_arguments(
+		'-DGLAVA_GLX',
+		language: 'c'
+	)
+	glava_dependencies += cc.find_library('Xrender')
+endif
+
+if get_option('standalone')
+	add_project_arguments(
+		'-DGLAVA_STANDALONE',
+		language: 'c')
+endif
+
+add_project_arguments(
+	'-DGLAVA_VERSION="'+glava_version+'"',
+	'-DSHADER_INSTALL_PATH="'+get_option('shaderdir')+'"',
+	language: 'c'
+)
+
+executable(
+	'glava',
+	sources: run_command('find', 'glava', '-type', 'f', '-name', '*.c', '-print').stdout().strip().split('\n'),
+	dependencies: glava_dependencies,
+	install: true
+)
+
+install_subdir('shaders/glava', install_dir: shaderdir+'/../')