1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
project('libfuse3', ['c'], version: '3.10.5',
meson_version: '>= 0.42',
default_options: [
'buildtype=debugoptimized',
'cpp_std=c++11',
'warning_level=2',
])
platform = host_machine.system()
if platform == 'darwin'
error('libfuse does not support OS-X.\n' +
'Take a look at http://osxfuse.github.io/ instead')
elif platform == 'cygwin' or platform == 'windows'
error('libfuse does not support Windows.\n' +
'Take a look at http://www.secfs.net/winfsp/ instead')
endif
#
# Feature detection
#
cfg = configuration_data()
cc = meson.get_compiler('c')
# Default includes when checking for presence of functions and
# struct members
include_default = '''
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
'''
args_default = [ '-D_GNU_SOURCE' ]
cfg.set_quoted('PACKAGE_VERSION', meson.project_version())
# Test for presence of some functions
test_funcs = [ 'fork', 'fstatat', 'openat', 'readlinkat', 'pipe2',
'splice', 'vmsplice', 'posix_fallocate', 'fdatasync',
'utimensat', 'copy_file_range', 'fallocate' ]
foreach func : test_funcs
cfg.set('HAVE_' + func.to_upper(),
cc.has_function(func, prefix: include_default, args: args_default))
endforeach
cfg.set('HAVE_SETXATTR',
cc.has_function('setxattr', prefix: '#include <sys/xattr.h>'))
cfg.set('HAVE_ICONV',
cc.has_function('iconv', prefix: '#include <iconv.h>'))
# Test if structs have specific member
cfg.set('HAVE_STRUCT_STAT_ST_ATIM',
cc.has_member('struct stat', 'st_atim',
prefix: include_default,
args: args_default))
cfg.set('HAVE_STRUCT_STAT_ST_ATIMESPEC',
cc.has_member('struct stat', 'st_atimespec',
prefix: include_default,
args: args_default))
# Write the test results into config.h (stored in build directory)
configure_file(output: 'config.h',
configuration : cfg)
#
# Compiler configuration
#
add_project_arguments('-D_REENTRANT', '-DHAVE_CONFIG_H', '-Wno-sign-compare',
'-Wstrict-prototypes', '-Wmissing-declarations', '-Wwrite-strings',
'-fno-strict-aliasing', language: 'c')
add_project_arguments('-D_REENTRANT', '-DHAVE_CONFIG_H', '-D_GNU_SOURCE',
'-Wno-sign-compare', '-Wmissing-declarations',
'-Wwrite-strings', '-fno-strict-aliasing', language: 'cpp')
# Some (stupid) GCC versions warn about unused return values even when they are
# casted to void. This makes -Wunused-result pretty useless, since there is no
# way to suppress the warning when we really *want* to ignore the value.
code = '''
__attribute__((warn_unused_result)) int get_4() {
return 4;
}
int main(void) {
(void) get_4();
return 0;
}'''
if not cc.compiles(code, args: [ '-O0', '-Werror=unused-result' ])
message('Compiler warns about unused result even when casting to void')
add_project_arguments('-Wno-unused-result', language: 'c')
endif
# gcc-10 and newer support the symver attribute which we need to use if we
# want to support LTO
# recent clang and gcc both support __has_attribute (and if they are too old
# to have __has_attribute, then they are too old to support symver)
# other compilers might not have __has_attribute, but in those cases
# it is safe for this check to fail and for us to fallback to the old _asm_
# method for symver. Anyway the attributes not supported by __has_attribute()
# unfortunately return true giving a false positive. So let's try to build
# using __attribute__ ((symver )) and see the result.
code = '''
__attribute__ ((symver ("test@TEST")))
void foo(void) {
}
int main(void) {
return 0;
}'''
if cc.compiles(code, args: [ '-O0', '-c', '-Werror'])
message('Compiler supports symver attribute')
add_project_arguments('-DHAVE_SYMVER_ATTRIBUTE', language: 'c')
else
message('Compiler does not support symver attribute')
endif
# '.' will refer to current build directory, which contains config.h
include_dirs = include_directories('include', 'lib', '.')
# Common dependencies
thread_dep = dependency('threads')
#
# Read build files from sub-directories
#
subdirs = [ 'lib', 'include']
if get_option('utils') and not platform.endswith('bsd') and platform != 'dragonfly'
subdirs += [ 'util', 'doc' ]
endif
if get_option('examples')
subdirs += 'example'
endif
if get_option('tests')
subdirs += 'test'
endif
foreach n : subdirs
subdir(n)
endforeach
|
