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# 17 march 2019
# TODO I'm not sure how to allow building 32-bit instead of 64-bit with meson
# TODO remove cpp from this list once https://github.com/mesonbuild/meson/issues/5181 is settled; move it to the OS checks and under cpp-multithread
project('libui', ['c', 'cpp'],
meson_version: '>=0.48.0',
default_options: [
'buildtype=debug', # build debug by default
'default_library=shared', # build shared libraries by default
'layout=flat', # keep all outputs together by default
# these are forced options, but meson doesn't let me set these up separately before I call project() (TODO https://github.com/mesonbuild/meson/issues/5179)
'warning_level=3', # always max warnings
'b_pch=false', # we don't want precompiled headers
'b_staticpic=true', # use PIC even for static libraries
'c_std=c99', # strict C99
'c_winlibs=', # we define our own Windows libraries
'cpp_std=c++11', # strict C++11
'cpp_eh=sc', # shut the compiler up in some cases
'cpp_winlibs=', # likewise as with c_winlibs
],
license: 'MIT')
# TODO after https://github.com/mesonbuild/meson/issues/5179 is settled, remove these
libui_OS = host_machine.system()
libui_MSVC = meson.get_compiler('c').get_id() == 'msvc'
# TODO switch to tabs; the spaces are just so I can share this file while I'm writing it
libui_forced_options = {
'warning_level': '3', # always max warnings
'b_pch': 'false', # we don't want precompiled headers
'b_staticpic': 'true', # use PIC even for static libraries
'c_std': 'c99', # strict C99
'c_winlibs': '[]', # we define our own Windows libraries
'cpp_std': 'c++11', # strict C++11
'cpp_eh': 'sc', # shut the compiler up in some cases
'cpp_winlibs': '[]', # likewise as with c_winlibs
}
foreach name, value : libui_forced_options
# TODO rewrite this when https://github.com/mesonbuild/meson/issues/5181 is settled
if not ((name == 'c_winlibs' or name == 'cpp_eh' or name == 'cpp_winlibs') and not libui_MSVC) and not (name == 'c_std' and libui_MSVC)
actual = '@0@'.format(get_option(name))
if actual != value
error('sorry, but libui requires that option ' + name + ' has the default value ' + value)
endif
endif
endforeach
libui_OS = host_machine.system()
libui_MSVC = meson.get_compiler('c').get_id() == 'msvc'
if libui_OS == 'darwin'
add_languages('objc',
required: true)
endif
libui_mode = get_option('default_library')
if libui_mode == 'both'
error('sorry, but libui does not support building both shared and static libraries at the same time, because Windows resource file rules differ between the two')
endif
libui_is_debug = get_option('buildtype').startswith('debug')
libui_project_compile_args = []
libui_project_link_args = []
if libui_OS == 'darwin'
libui_macosx_version_min = '-mmacosx-version-min=10.8'
libui_project_compile_args += [libui_macosx_version_min]
libui_project_link_args += [libui_macosx_version_min]
endif
if libui_MSVC
# TODO subsystem version
libui_project_compile_args += [
'/wd4100',
'/bigobj',
]
if libui_is_debug
libui_project_compile_args += ['/RTC1', '/RTCs', '/RTCu']
endif
libui_project_link_args += [
'/LARGEADDRESSAWARE',
'/INCREMENTAL:NO',
'/MANIFEST:NO',
]
# TODO autogenerate a .def file?
else
libui_project_compile_args += [
'-Wno-unused-parameter',
'-Wno-switch',
]
if libui_OS == 'windows'
# don't require shipping the MinGW-w64 DLLs
libui_project_link_args += [
'-static',
'-static-libgcc',
'-static-libstdc++',
]
endif
endif
# TODO come up with a better way to do this, both for libui (the compiler define, used by winapi.hpp, and the manifest args) and for the binaries (the manifest args)
# TODO (after the above TODO is resolved) move that below the part below that actually adds these arguments
libui_manifest_args = []
if libui_mode == 'static'
libui_project_compile_args += ['-D_UI_STATIC']
libui_manifest_args = ['-D_UI_STATIC']
endif
add_project_arguments(libui_project_compile_args,
language: ['c', 'cpp', 'objc'])
add_project_link_arguments(libui_project_link_args,
language: ['c', 'cpp', 'objc'])
# TODO:
# meson determins whether -Wl,--no-undefined is provided via
# built-in option b_lundef, and it's true by default, which is what
# we want (so I don't make mistakes like asking for unknown
# functions in my dependencies). However, meson also is smart
# about specifying this properly on systems that don't support it, like
# FreeBSD (where I had the comment "figure out why FreeBSD
# follows linked libraries here" when I was on cmake) and OpenBSD
# (according to someone on freenode #mesonbuild), but it isn't clear
# whether it's just ignored or if the value is forced to false.
# Therefore, once this is determined, we can uncomment the
# following.
libui_libui_link_args = []
#if not libui_MSVC and get_option("b_lundef")
# TODO what should this be on MSVC?
# libui_libui_link_args += ['-Wl,--no-allow-shlib-undefined']
#endif
libui_sources = []
libui_deps = []
libui_soversion = ''
libui_rpath = ''
subdir('common')
if libui_OS == 'windows'
subdir('windows')
install_headers('ui_windows.h')
elif libui_OS == 'darwin'
subdir('darwin')
install_headers('ui_darwin.h')
else
subdir('unix')
install_headers('ui_unix.h')
endif
libui_libui = library('ui', libui_sources,
dependencies: libui_deps,
build_rpath: libui_rpath,
install_rpath: libui_rpath,
name_prefix: 'lib', # always call it libui, even in Windows DLLs
install: true,
gnu_symbol_visibility: 'hidden',
c_args: ['-Dlibui_EXPORTS'],
cpp_args: ['-Dlibui_EXPORTS'],
objc_args: ['-Dlibui_EXPORTS'],
link_args: libui_libui_link_args,
soversion: libui_soversion,
darwin_versions: []) # TODO
install_headers('ui.h')
# TODO when the API is stable enough to be versioned, create a pkg-config file (https://mesonbuild.com/Pkgconfig-module.html) and a declare_dependency() section too
libui_binary_deps = []
if libui_mode == 'static'
libui_binary_deps = libui_deps
endif
subdir('test')
subdir('examples')

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