diff options
Diffstat (limited to 'ext/mwrap/extconf.rb')
| -rw-r--r-- | ext/mwrap/extconf.rb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/ext/mwrap/extconf.rb b/ext/mwrap/extconf.rb index 4ac8881..e9dbb1e 100644 --- a/ext/mwrap/extconf.rb +++ b/ext/mwrap/extconf.rb @@ -10,4 +10,19 @@ have_library 'urcu-bp' or abort 'liburcu-bp not found' have_library 'dl' have_library 'c' have_library 'execinfo' # FreeBSD + +if try_link(<<'') +int main(void) { return __builtin_add_overflow_p(0,0,(int)1); } + + $defs << '-DHAVE_BUILTIN_ADD_OVERFLOW_P' +end + +if try_link(<<'') +int main(int a) { return __builtin_add_overflow(0,0,&a); } + + $defs << '-DHAVE_BUILTIN_ADD_OVERFLOW_P' +else + abort 'missing __builtin_add_overflow' +end + create_makefile 'mwrap' |