extconf.rb in raindrops-0.14.0.1.g8177

- old
+ new

@@ -4,9 +4,10 @@
 have_func('mmap', 'sys/mman.h') or abort 'mmap() not found'
 have_func('munmap', 'sys/mman.h') or abort 'munmap() not found'
 
 $CPPFLAGS += " -D_GNU_SOURCE "
 have_func('mremap', 'sys/mman.h')
+have_header('linux/tcp.h')
 
 $CPPFLAGS += " -D_BSD_SOURCE "
 have_func("getpagesize", "unistd.h")
 have_func('rb_thread_blocking_region')
 have_func('rb_thread_io_blocking_region')