auto-generate SLEEPY_PENGUIN_VERSION constant

This allows the Ruby-visible constant to always be up-to-date
with the release.

1 files changed, 8 insertions, 0 deletions

diff --git a/ext/sleepy_penguin/init.c b/ext/sleepy_penguin/init.c
index cab97ed..9b4f31c 100644
--- a/ext/sleepy_penguin/init.c
+++ b/ext/sleepy_penguin/init.c
@@ -1,6 +1,8 @@
 #define _GNU_SOURCE
+#include <ruby.h>
 #include <unistd.h>
 #include <sys/types.h>
+#include "git_version.h"
 #define L1_CACHE_LINE_MAX 128 /* largest I've seen (Pentium 4) */
 size_t rb_sp_l1_cache_line_size;
 
@@ -53,8 +55,14 @@ static size_t l1_cache_line_size_detect(void)
 
 void Init_sleepy_penguin_ext(void)
 {
+        VALUE mSleepyPenguin;
+
         rb_sp_l1_cache_line_size = l1_cache_line_size_detect();
 
+        mSleepyPenguin = rb_define_module("SleepyPenguin");
+        rb_define_const(mSleepyPenguin, "SLEEPY_PENGUIN_VERSION",
+                        rb_str_new2(MY_GIT_VERSION));
+
         sleepy_penguin_init_kqueue();
         sleepy_penguin_init_epoll();
         sleepy_penguin_init_timerfd();