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-rw-r--r--libc/Android.mk8
1 files changed, 8 insertions, 0 deletions
diff --git a/libc/Android.mk b/libc/Android.mk
index 97f4011..a6f2c83 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -408,6 +408,14 @@ libc_common_cflags := \
-DUSE_DL_PREFIX \
-DPOSIX_MISTAKE
+# these macro definitions are required to implement the
+# 'timezone' and 'daylight' global variables, as well as
+# properly update the 'tm_gmtoff' field in 'struct tm'.
+#
+libc_common_cflags += \
+ -DTM_GMTOFF=tm_gmtoff \
+ -DUSG_COMPAT=1
+
ifeq ($(strip $(DEBUG_BIONIC_LIBC)),true)
libc_common_cflags += -DDEBUG
endif