1# Project definition
2project('usrsctplib', 'c',
3    version: '1.0.0',
4    default_options: ['c_std=c99'],
5    meson_version: '>=0.49.0')
6
7# Set compiler warning flags
8compiler = meson.get_compiler('c')
9if compiler.get_argument_syntax() == 'msvc'
10    compiler_args = compiler.get_supported_arguments([
11        '/wd4100', # 'identifier' : unreferenced formal parameter
12        '/wd4127', # conditional expression is constant
13        '/wd4200', # nonstandard extension used : zero-sized array in struct/union
14        '/wd4214', # bit field types other than int
15        '/wd4706', # assignment within conditional expression
16        '/wd4245', # 'conversion' : conversion from 'type1' to 'type2', signed/unsigned mismatch
17        '/wd4389', # 'operator' : signed/unsigned mismatch
18        '/wd4702', # unreachable code
19        '/wd4701', # Potentially uninitialized local variable 'name' used
20        '/wd4244', # 'conversion' conversion from 'type1' to 'type2', possible loss of data
21    ])
22else
23    compiler_args = compiler.get_supported_arguments([
24        '-pedantic',
25        '-Wall',
26        '-Wextra',
27        '-Wfloat-equal',
28        '-Wshadow',
29        '-Wpointer-arith',
30        '-Winit-self',
31        '-Wno-unused-function',
32        '-Wno-unused-parameter',
33        '-Wno-unreachable-code',
34        '-Wstrict-prototypes',
35    ])
36endif
37add_project_arguments(compiler_args, language: 'c')
38
39# Configuration
40compile_args = []
41
42# Dependency: Threads
43thread_dep = dependency('threads', required: true)
44
45# Dependencies list
46dependencies = [
47    thread_dep,
48]
49
50# Global settings
51add_project_arguments([
52    '-D__Userspace__',
53    '-DSCTP_SIMPLE_ALLOCATOR',
54    '-DSCTP_PROCESS_LEVEL_LOCKS',
55], language: 'c')
56
57# OS-specific settings
58system = host_machine.system()
59if system in ['linux', 'android']
60    add_project_arguments([
61        '-D__Userspace_os_Linux',
62        '-D_GNU_SOURCE',
63    ], language: 'c')
64elif system == 'freebsd'
65    add_project_arguments([
66        '-D__Userspace_os_FreeBSD',
67        '-U__FreeBSD__',
68    ] + compiler.get_supported_arguments([
69        '-Wno-address-of-packed-member',
70    ]), language: 'c')
71elif system in ['darwin', 'ios']
72    add_project_arguments([
73            '-D__Userspace_os_Darwin',
74            '-D__APPLE_USE_RFC_2292',
75        ] + compiler.get_supported_arguments([
76            '-Wno-address-of-packed-member',
77            '-Wno-deprecated-declarations',
78        ]), language: 'c')
79elif system == 'dragonfly'
80    add_project_arguments([
81        '-D__Userspace_os_DragonFly',
82        '-U__DragonFly__',
83    ], language: 'c')
84elif system == 'netbsd'
85    add_project_arguments([
86        '-D__Userspace_os_NetBSD',
87        '-U__NetBSD__',
88    ], language: 'c')
89elif system == 'openbsd'
90    add_project_arguments([
91        '-D__Userspace_os_OpenBSD',
92        '-U__OpenBSD__',
93    ], language: 'c')
94elif system == 'windows'
95    add_project_arguments('-D__Userspace_os_Windows', language: 'c')
96    dependencies += compiler.find_library('ws2_32', required: true)
97    dependencies += compiler.find_library('iphlpapi', required: true)
98    if compiler.get_id() == 'gcc'
99        add_project_arguments(compiler.get_supported_arguments([
100            '-Wno-format',
101            '-D_WIN32_WINNT=0x601',  # Enables inet_ntop and friends
102        ]), language: 'c')
103    endif
104else
105    error('Unknown system: @0@'.format(system))
106endif
107
108# Feature: sys/queue
109if compiler.has_header('sys/queue.h')
110    add_project_arguments('-DHAVE_SYS_QUEUE_H', language: 'c')
111endif
112
113# Feature: sys/socket, linux/ifaddr, linux/rtnetlink
114if compiler.has_header('sys/socket.h')
115    if compiler.has_header('linux/if_addr.h')
116        add_project_arguments('-DHAVE_LINUX_IF_ADDR_H', language: 'c')
117    endif
118
119    if compiler.has_header('linux/rtnetlink.h')
120        add_project_arguments('-DHAVE_LINUX_RTNETLINK_H', language: 'c')
121    endif
122endif
123
124# Feature: ICMP
125have_sys_types = compiler.has_header('sys/types.h')
126have_netinet_in = compiler.has_header('netinet/in.h')
127have_netinet_ip = compiler.has_header('netinet/ip.h')
128have_netinet_ip_icmp = compiler.has_header('netinet/ip_icmp.h')
129if have_sys_types and have_netinet_in and have_netinet_ip and have_netinet_ip_icmp
130    add_project_arguments('-DHAVE_NETINET_IP_ICMP_H', language: 'c')
131endif
132
133# Feature: stdatomic
134if compiler.has_header('stdatomic.h')
135    add_project_arguments('-DHAVE_STDATOMIC_H', language: 'c')
136endif
137
138# Feature: sockaddr.sa_len
139prefix = '''
140#include <sys/types.h>
141#include <sys/socket.h>
142'''
143have_sa_len = compiler.has_member('struct sockaddr', 'sa_len', prefix: prefix)
144if have_sa_len
145    add_project_arguments('-DHAVE_SA_LEN', language: 'c')
146endif
147
148# Feature: sockaddr_in.sin_len / sockaddr_in6.sin6_len / sockaddr_conn.sconn_len
149prefix = '''
150#include <sys/types.h>
151#include <netinet/in.h>
152'''
153have_sin_len = compiler.has_member('struct sockaddr_in', 'sin_len', prefix: prefix)
154if have_sin_len
155    add_project_arguments('-DHAVE_SIN_LEN', language: 'c')
156endif
157have_sin6_len = compiler.has_member('struct sockaddr_in6', 'sin6_len', prefix: prefix)
158if have_sin6_len
159    add_project_arguments('-DHAVE_SIN6_LEN', language: 'c')
160endif
161have_sconn_len = compiler.has_member('struct sockaddr_conn', 'sconn_len', prefix: '#include "usrsctp.h"', include_directories: include_directories('usrsctplib'))
162if have_sconn_len
163    add_project_arguments('-DHAVE_SCONN_LEN', language: 'c')
164endif
165
166# Options
167if get_option('sctp_invariants')
168    add_project_arguments('-DINVARIANTS', language: 'c')
169endif
170if get_option('sctp_debug')
171    add_project_arguments('-DSCTP_DEBUG', language: 'c')
172    compile_args += '-DSCTP_DEBUG'
173endif
174if get_option('sctp_inet')
175    add_project_arguments('-DINET', language: 'c')
176endif
177if get_option('sctp_inet6')
178    add_project_arguments('-DINET6', language: 'c')
179endif
180
181# Library
182subdir('usrsctplib')
183
184# Build library
185if compiler.get_id() == 'msvc' and get_option('default_library') == 'shared'
186    # Needed by usrsctp_def
187    find_program('dumpbin')
188
189    usrsctp_static = static_library('usrsctp-static', sources,
190        dependencies: dependencies,
191        include_directories: include_dirs)
192
193   usrsctp_def = custom_target('usrsctp.def',
194        command: [find_program('gen-def.py'), '@INPUT@'],
195        input: usrsctp_static,
196        output: 'usrsctp.def',
197        capture: true)
198
199    usrsctp = shared_library('usrsctp',
200        link_whole: usrsctp_static,
201        dependencies: dependencies,
202        vs_module_defs: usrsctp_def,
203        install: true,
204        version: meson.project_version())
205else
206    usrsctp = library('usrsctp', sources,
207        dependencies: dependencies,
208        include_directories: include_dirs,
209        install: true,
210        version: meson.project_version(),
211        c_args: '-U__APPLE__')
212endif
213
214# Declare dependency
215usrsctp_dep = declare_dependency(
216    compile_args: compile_args,
217    include_directories: include_dirs,
218    link_with: usrsctp)
219
220# Generate pkg-config file
221pkg = import('pkgconfig')
222pkg.generate(usrsctp,
223    name: 'usrsctp',
224    description: 'A portable SCTP userland stack',
225    url: 'https://github.com/sctplab/usrsctp',
226    extra_cflags: compile_args)
227
228# Programs (optional)
229if get_option('sctp_build_programs')
230    subdir('programs')
231
232    # Build executables
233    foreach name, sources : programs
234        executable(
235            name,
236            programs_helper_sources + sources,
237            dependencies: dependencies,
238            link_with: usrsctp,
239            include_directories: include_dirs)
240    endforeach
241endif
242