path: root/lib/builtins/Darwin-excludes/README.TXT
diff options
Diffstat (limited to 'lib/builtins/Darwin-excludes/README.TXT')
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/builtins/Darwin-excludes/README.TXT b/lib/builtins/Darwin-excludes/README.TXT
new file mode 100644
index 000000000000..173eccca6dec
--- /dev/null
+++ b/lib/builtins/Darwin-excludes/README.TXT
@@ -0,0 +1,11 @@
+This folder contains list of symbols that should be excluded from the builtin
+libraries for Darwin. There are two reasons symbols are excluded:
+(1) They aren't supported on Darwin
+(2) They are contained within the OS on the minimum supported target
+The builtin libraries must contain all symbols not provided by the lowest
+supported target OS. Meaning if minimum deployment target is iOS 6, all builtins
+not included in the ios6-<arch>.txt files need to be included. The one catch is
+that this is per-architecture. Since iOS 6 doesn't support arm64, when supporting
+iOS 6, the minimum deployment target for arm64 binaries is iOS 7.