The Meson Build System
http://mesonbuild.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
3.0 KiB
65 lines
3.0 KiB
project('has function', 'c', 'cpp') |
|
|
|
host_system = host_machine.system() |
|
|
|
# This is used in the `test_compiler_check_flags_order` unit test |
|
unit_test_args = '-I/tmp' |
|
compilers = [meson.get_compiler('c'), meson.get_compiler('cpp')] |
|
|
|
foreach cc : compilers |
|
if not cc.has_function('printf', prefix : '#include<stdio.h>', |
|
args : unit_test_args) |
|
error('"printf" function not found (should always exist).') |
|
endif |
|
|
|
# Should also be able to detect it without specifying the header |
|
# We check for a different function here to make sure the result is |
|
# not taken from a cache (ie. the check above) |
|
# On MSVC fprintf is defined as an inline function in the header, so it cannot |
|
# be found without the include. |
|
if cc.get_id() != 'msvc' |
|
assert(cc.has_function('fprintf', args : unit_test_args), |
|
'"fprintf" function not found without include (on !msvc).') |
|
else |
|
assert(cc.has_function('fprintf', prefix : '#include <stdio.h>', |
|
args : unit_test_args), |
|
'"fprintf" function not found with include (on msvc).') |
|
endif |
|
|
|
if cc.has_function('hfkerhisadf', prefix : '#include<stdio.h>', |
|
args : unit_test_args) |
|
error('Found non-existent function "hfkerhisadf".') |
|
endif |
|
|
|
# With glibc on Linux lchmod is a stub that will always return an error, |
|
# we want to detect that and declare that the function is not available. |
|
# We can't check for the C library used here of course, but if it's not |
|
# implemented in glibc it's probably not implemented in any other 'slimmer' |
|
# C library variants either, so the check should be safe either way hopefully. |
|
if host_system == 'linux' and cc.get_id() == 'gcc' |
|
assert (cc.has_function('poll', prefix : '#include <poll.h>', |
|
args : unit_test_args), |
|
'couldn\'t detect "poll" when defined by a header') |
|
lchmod_prefix = '#include <sys/stat.h>\n#include <unistd.h>' |
|
assert (not cc.has_function('lchmod', prefix : lchmod_prefix, |
|
args : unit_test_args), |
|
'"lchmod" check should have failed') |
|
# Check that built-ins are found properly both with and without headers |
|
assert(cc.has_function('alloca', args : unit_test_args), |
|
'built-in alloca must be found on Linux') |
|
assert(cc.has_function('alloca', prefix : '#include <alloca.h>', |
|
args : unit_test_args), |
|
'built-in alloca must be found on Linux with #include') |
|
endif |
|
|
|
# For some functions one needs to define _GNU_SOURCE before including the |
|
# right headers to get them picked up. Make sure we can detect these functions |
|
# as well without any prefix |
|
if cc.has_header_symbol('sys/socket.h', 'recvmmsg', |
|
prefix : '#define _GNU_SOURCE', |
|
args : unit_test_args) |
|
# We assume that if recvmmsg exists sendmmsg does too |
|
assert (cc.has_function('sendmmsg', args : unit_test_args), |
|
'Failed to detect function "sendmmsg" (should always exist).') |
|
endif |
|
endforeach
|
|
|