--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,5 +1,5 @@
include(CheckSymbolExists)
-add_definitions("-D_POSIX_C_SOURCE=2") # for getopt()
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,5 +1,5 @@
include(CheckSymbolExists)
-add_definitions("-D_POSIX_C_SOURCE=2") # for getopt()