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-rw-r--r--erts/configure.in3
1 files changed, 0 insertions, 3 deletions
diff --git a/erts/configure.in b/erts/configure.in
index 021780ecc2..854bdbdc15 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -476,9 +476,6 @@ case $host_os in
# -D_WIN32_WINNT=* from CPPFLAGS is saved in ETHR_DEFS.
CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0600 -DWINVER=0x0600"
;;
- darwin*)
- CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE"
- ;;
*)
;;
esac