1 files changed, 9 insertions, 0 deletions
diff --git a/math/Versions b/math/Versions
index 513ab14244..e6a597cf23 100644
--- a/math/Versions
+++ b/math/Versions
@@ -29,6 +29,8 @@ libc {
     # s*
     scalbln; scalblnf; scalblnl;
   }
+  GLIBC_2.20 {
+  }
 }
 
 libm {
@@ -201,4 +203,11 @@ libm {
   GLIBC_2.18 {
     __issignaling; __issignalingf; __issignalingl;
   }
+  GLIBC_2.23 {
+    # The __signgam name must be exported for the signgam weak alias
+    # to work.  New symbol versions of lgamma* that set __signgam are
+    # needed to preserve compatibility with old binaries that have a
+    # dynamic symbol for signgam but not __signgam.
+    lgamma; lgammaf; lgammal; __signgam;
+  }
 }