mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-29 18:06:43 +03:00
49 lines
1.4 KiB
Meson
49 lines
1.4 KiB
Meson
conf_data = configuration_data()
|
|
compiler = meson.get_compiler('c')
|
|
older_oses = get_option('support-older-oses')
|
|
|
|
if not older_oses
|
|
code = '''#include <stddef.h>
|
|
#include <inttypes.h> /* OSX sys/random.h needs Availability.h from this */
|
|
#include <sys/random.h>
|
|
int main() { return getentropy((void*)0, 0); }
|
|
'''
|
|
sysrandom = compiler.links(code, name : 'getentropy in sys/random.h')
|
|
conf_data.set('ENT_GE_SYSRANDOM', sysrandom)
|
|
|
|
if not sysrandom
|
|
code = '''#include <unistd.h>
|
|
int main() { return getentropy((void*)0, 0); }
|
|
'''
|
|
unistd = compiler.links(code, name : 'getentropy is in unistd.h')
|
|
conf_data.set('ENT_GE_UNISTD', unistd)
|
|
endif
|
|
have_getentropy = sysrandom or unistd
|
|
conf_data.set('ENT_GETENTROPY', have_getentropy)
|
|
else
|
|
have_getentropy = false
|
|
endif
|
|
|
|
if not have_getentropy
|
|
code = '''#define _GNU_SOURCE
|
|
#include <asm/unistd.h>
|
|
#include <unistd.h>
|
|
#include <sys/syscall.h>
|
|
int main() { return !syscall(__NR_getrandom, (void*)0, 0, 0); }
|
|
'''
|
|
getrandom = compiler.links(code, name : 'getrandom syscall available')
|
|
conf_data.set('ENT_GETRANDOM', getrandom)
|
|
|
|
if not getrandom
|
|
code = '''#include <fcntl.h>
|
|
int main() { return open("/dev/urandom", O_RDONLY) >= 0 ? 0 : 1; }
|
|
'''
|
|
urandom = compiler.run(code, name : 'can open /dev/urandom').returncode() == 0
|
|
conf_data.set('ENT_URANDOM', urandom)
|
|
endif
|
|
endif
|
|
|
|
|
|
configure_file(output : 'config.h',
|
|
configuration : conf_data)
|