add dietlibc support, reduced 16kb memory usage on linux x86_64.

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2534 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 22 insertions, 0 deletions

diff --git a/mbbsd/time.c b/mbbsd/time.c
new file mode 100644
index 00000000..e692f668
--- /dev/null
+++ b/mbbsd/time.c
@@ -0,0 +1,22 @@
+#ifdef __dietlibc__
+#include <time.h>
+#warning	"hardcoded time zone as GMT+8!"
+extern void __maplocaltime(void);
+extern time_t __tzfile_map(time_t t, int *isdst, int forward);
+extern time_t timegm(struct tm *const t);
+
+time_t mktime(register struct tm* const t) {
+  time_t x=timegm(t);
+  int isdst;
+  time_t y;
+  x-=8*3600;
+  return x;
+}
+
+struct tm* localtime_r(const time_t* t, struct tm* r) {
+  time_t tmp;
+  tmp=*t;
+  tmp+=8*3600;
+  return gmtime_r(&tmp,r);
+}
+#endif