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Aegisub/meson.build
Eli Schwartz 8336c7d97c meson: use best practices lookup for iconv support 
Meson 0.60.0 adds support for an "iconv" dependency that always does the
right thing for you, so that you don't need to think about it. It also
has some side advantages:
- you can do dependency fallback, and --force-fallback-for=iconv works
- it logs one line, not two, and that is "dependency found? yes or no"

Since Aegisub doesn't mandate the use of such new versions of Meson, we
cannot assume the dependency works. Instead, adapt to the version of
Meson being used: on new enough versions of Meson, use the new
dependency, but on older versions of Meson, use the pre-existing logic,
which isn't as nice but has been producing correct results so far.
2022-07-07 00:08:24 -07:00

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project('Aegisub', ['c', 'cpp'],
license: 'BSD-3-Clause',
meson_version: '>=0.56.1',
default_options: ['cpp_std=c++14', 'buildtype=debugoptimized'],
version: '3.2.2')
cmake = import('cmake')
if host_machine.system() == 'windows'
add_project_arguments('-DNOMINMAX', '-D_WIN32_WINNT=0x0601', language: 'cpp')
if not get_option('csri').disabled()
add_global_arguments('-DCSRI_NO_EXPORT', language: 'c')
endif
sys_nasm = find_program('nasm', required: false)
if not sys_nasm.found()
nasm = subproject('nasm').get_variable('nasm')
meson.override_find_program('nasm', nasm)
endif
endif
if host_machine.system() == 'windows'
version_sh = find_program('tools/version.ps1')
else
version_sh = find_program('tools/version.sh')
endif
version_inc = include_directories('.')
version_h = custom_target('git_version.h',
command: [version_sh, meson.current_build_dir(), meson.current_source_dir()],
build_by_default: true,
build_always_stale: true, # has internal check whether target file will be refreshed
output: ['git_version.h'])
if host_machine.system() == 'darwin' and get_option('build_osx_bundle')
prefix = meson.current_build_dir() / 'Aegisub.app' / 'Contents'
bindir = prefix / 'MacOS'
datadir = prefix / 'SharedSupport'
localedir = prefix / 'Resources'
dataroot = datadir
else
prefix = get_option('prefix')
bindir = prefix / get_option('bindir')
datadir = prefix / get_option('datadir')
localedir = prefix / get_option('localedir')
dataroot = datadir / 'aegisub'
endif
docdir = prefix / 'doc'
# MSVC sets this automatically with -MDd, but it has a different meaning on other platforms
if get_option('debug') and host_machine.system() != 'windows'
add_project_arguments('-D_DEBUG', language: 'cpp')
endif
conf = configuration_data()
conf.set_quoted('P_DATA', dataroot)
conf.set_quoted('P_LOCALE', localedir)
if get_option('credit') != ''
conf.set_quoted('BUILD_CREDIT', get_option('credit'))
endif
conf.set('WITH_UPDATE_CHECKER', get_option('enable_update_checker'))
deps = []
deps_inc = []
if host_machine.system() == 'darwin'
add_languages('objc', 'objcpp')
add_project_arguments('-DGL_SILENCE_DEPRECATION', language: 'cpp')
# meson neither supports objcpp_std nor inherits cpp_std https://github.com/mesonbuild/meson/issues/5495
add_project_arguments('-std=c++11', language: 'objcpp')
elif host_machine.system() != 'windows'
conf.set('WITH_FONTCONFIG', 1)
deps += dependency('fontconfig')
endif
cxx = meson.get_compiler('cpp')
cc = meson.get_compiler('c')
deps += cc.find_library('m', required: false)
deps += cc.find_library('dl', required: false)
if meson.version().version_compare('>=0.60.0')
iconv_dep = dependency('iconv', fallback: ['iconv', 'libiconv_dep'])
else
iconv_dep = cc.find_library('iconv', required: false)
if not (iconv_dep.found() or cc.has_function('iconv_open'))
iconv_sp = subproject('iconv') # this really needs to be replaced with a proper port
iconv_dep = iconv_sp.get_variable('libiconv_dep')
endif
endif
deps += iconv_dep
deps += dependency('libass', version: '>=0.9.7',
fallback: ['libass', 'libass_dep'])
boost_modules = ['chrono', 'filesystem', 'thread', 'locale', 'regex']
if not get_option('local_boost')
boost_dep = dependency('boost', version: '>=1.50.0',
modules: boost_modules + ['system'],
required: false,
static: get_option('default_library') == 'static')
endif
if get_option('local_boost') or not boost_dep.found()
boost_dep = []
boost = subproject('boost')
foreach module: boost_modules
boost_dep += boost.get_variable('boost_' + module + '_dep')
endforeach
endif
deps += boost_dep
if host_machine.system() == 'windows'
conf.set('BOOST_USE_WINDOWS_H', 1)
endif
deps += dependency('zlib')
wx_minver = '>=' + get_option('wx_version')
if host_machine.system() == 'darwin'
wx_minver = '>=3.1.0'
endif
wx_dep = dependency('wxWidgets', version: wx_minver,
required: false,
modules: ['std', 'stc', 'gl'])
if wx_dep.found()
deps += wx_dep
else
build_shared = true
if get_option('default_library') == 'static'
build_shared = false
endif
build_type = 'Release'
if get_option('buildtype') == 'debug'
build_type = 'Debug'
endif
opt_var = cmake.subproject_options()
opt_var.add_cmake_defines({
'wxBUILD_INSTALL': false,
'wxBUILD_PRECOMP': false, # otherwise breaks project generation w/ meson
'wxBUILD_SHARED': build_shared,
'wxUSE_WEBVIEW': false, # breaks build on linux
'CMAKE_BUILD_TYPE': build_type,
'wxUSE_IMAGE': true,
'wxBUILD_MONOLITHIC': true # otherwise breaks project generation w/ meson
})
wx = cmake.subproject('wxWidgets', options: opt_var)
deps += [
wx.dependency('wxmono'),
wx.dependency('wxregex'),
wx.dependency('wxscintilla')
]
if host_machine.system() == 'windows' or host_machine.system() == 'darwin'
deps += [
wx.dependency('wxpng'),
]
endif
if host_machine.system() == 'windows'
deps += [
wx.dependency('wxzlib'),
wx.dependency('wxexpat'),
]
if cc.has_header('rpc.h')
deps += cc.find_library('rpcrt4', required: true)
else
error('Missing Windows SDK RPC Library (rpc.h / rpcrt4.lib)')
endif
if cc.has_header('commctrl.h')
deps += cc.find_library('comctl32', required: true)
else
error('Missing Windows SDK Common Controls Library (commctrl.h / comctl32.lib)')
endif
endif
endif
deps += dependency('icu-uc', version: '>=4.8.1.1')
deps += dependency('icu-i18n', version: '>=4.8.1.1')
dep_avail = []
foreach dep: [
# audio, in order of precedence
['libpulse', [], 'PulseAudio', [], []],
['alsa', [], 'ALSA', [], []],
['portaudio-2.0', [], 'PortAudio', [], []],
['openal', '>=0.0.8', 'OpenAL', [], ['OpenAL']],
# video
['ffms2', '>=2.22', 'FFMS2', ['ffms2', 'ffms2_dep'], []],
# other
['fftw3', [], 'FFTW3', [], []],
['hunspell', [], 'Hunspell', ['hunspell', 'hunspell_dep'], []],
['uchardet', [], 'uchardet', ['uchardet', 'uchardet_dep'], []],
]
optname = dep[0].split('-')[0]
if not get_option(optname).disabled()
# [provide] section is ignored if required is false;
# must provided define fallback explicitly
# (with meson 0.56 you can do allow_fallback: true):
#d = dependency(dep[0], version: dep[1],
# required: false, allow_fallback: true)
if dep[3].length() > 0
d = dependency(dep[0], version: dep[1], fallback: dep[3])
else
d = dependency(dep[0], version: dep[1], required: false)
endif
if not d.found() and dep[4].length() > 0 and host_machine.system() == 'darwin'
d = dependency('appleframeworks', modules: dep[4], required: false)
endif
if d.found()
deps += d
conf.set('WITH_@0@'.format(dep[0].split('-')[0].to_upper()), 1)
dep_avail += dep[2]
elif get_option(optname).enabled()
error('@0@ enabled but not found'.format(dep[2]))
endif
endif
endforeach
if host_machine.system() == 'windows' and get_option('avisynth').enabled()
conf.set('WITH_AVISYNTH', 1) # bundled separately with installer
endif
if host_machine.system() == 'windows' and not get_option('directsound').disabled()
dsound_dep = cc.find_library('dsound', required: get_option('directsound'))
winmm_dep = cc.find_library('winmm', required: get_option('directsound'))
ole32_dep = cc.find_library('ole32', required: get_option('directsound'))
have_dsound_h = cc.has_header('dsound.h')
if not have_dsound_h and get_option('directsound').enabled()
error('DirectSound enabled but dsound.h not found')
endif
dxguid_dep = cc.find_library('dxguid', required: true)
if dsound_dep.found() and winmm_dep.found() and ole32_dep.found() and dxguid_dep.found() and have_dsound_h
deps += [dsound_dep, winmm_dep, ole32_dep, dxguid_dep]
conf.set('WITH_DIRECTSOUND', 1)
dep_avail += 'DirectSound'
endif
endif
if host_machine.system() == 'darwin'
frameworks_dep = dependency('appleframeworks', modules : ['CoreText', 'CoreFoundation', 'AppKit', 'Carbon', 'IOKit'])
deps += frameworks_dep
endif
# TODO: OSS
def_audio = get_option('default_audio_output')
if def_audio != 'auto'
if not dep_avail.contains(def_audio)
error('Default audio output "@0@" selected but not available'.format(def_audio))
endif
elif dep_avail.length() != 0
def_audio = dep_avail[0]
else
def_audio = ''
endif
conf_platform = configuration_data()
conf_platform.set('DEFAULT_PLAYER_AUDIO', def_audio)
luajit = dependency('luajit', version: '>=2.0.0', required: get_option('system_luajit'))
if luajit.found() and luajit.type_name() != 'internal'
luajit_test = cc.run('''#include <lauxlib.h>
int main(void)
{
lua_State *L = luaL_newstate();
if (!L) return 1;
// This is valid in lua 5.2, but a syntax error in 5.1
const char testprogram[] = "function foo() while true do break return end end";
return luaL_loadstring(L, testprogram) == LUA_ERRSYNTAX;
}''', dependencies: luajit)
if luajit_test.returncode() == 1
if get_option('system_luajit')
error('System luajit found but not compiled in 5.2 mode')
else
message('System luajit found but not compiled in 5.2 mode; using built-in luajit')
endif
else
deps += luajit
endif
else
message('System luajit not found; using built-in luajit')
endif
if not deps.contains(luajit)
luajit_sp = subproject('luajit')
luajit_inc = luajit_sp.get_variable('src_inc')
deps += luajit_sp.get_variable('luajit_dep')
else
luajit_inc = include_directories(luajit.get_variable('includedir'))
endif
subdir('subprojects/luabins/src')
dep_gl = dependency('gl', required: false)
if not dep_gl.found()
if host_machine.system() == 'windows'
dep_gl = cc.find_library('opengl32', required: false)
else
dep_gl = cc.find_library('GL', required: false)
endif
if not cc.has_header('GL/gl.h')
dep_gl = dependency('', required: false)
endif
endif
if host_machine.system() == 'darwin'
conf.set('HAVE_OPENGL_GL_H', 1)
endif
if not dep_gl.found()
error('OpenGL implementation not found')
endif
deps += dep_gl
if not get_option('csri').disabled() and host_machine.system() == 'windows'
conf.set('WITH_CSRI', 1)
csri_sp = subproject('csri')
deps += csri_sp.get_variable('csri_dep')
endif
acconf = configure_file(output: 'acconf.h', configuration: conf)
subdir('automation')
subdir('libaegisub')
subdir('packages')
subdir('po')
subdir('src')
subdir('tests')
aegisub_cpp_pch = ['src/include/agi_pre.h']
aegisub_c_pch = ['src/include/agi_pre_c.h']
aegisub = executable('aegisub', aegisub_src, version_h, acconf,
link_with: [libresrc, libluabins, libaegisub],
include_directories: [libaegisub_inc, libresrc_inc, version_inc, deps_inc, include_directories('src')],
cpp_pch: aegisub_cpp_pch,
c_pch: aegisub_c_pch,
install: true,
install_dir: bindir,
dependencies: deps,
win_subsystem: 'windows')
if host_machine.system() == 'windows'
mt_exe = find_program('mt.exe')
apply_manifest = find_program(meson.project_source_root() / 'tools/apply-manifest.py')
custom_target('apply-manifest',
input: aegisub,
output: 'applied_manifest',
command: [apply_manifest, mt_exe, '@INPUT@'],
build_by_default: true)
endif
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