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-rw-r--r--cpp/src/IceGrid/Scanner.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/cpp/src/IceGrid/Scanner.cpp b/cpp/src/IceGrid/Scanner.cpp
index 23958d4a7c9..9413d50a829 100644
--- a/cpp/src/IceGrid/Scanner.cpp
+++ b/cpp/src/IceGrid/Scanner.cpp
@@ -471,6 +471,7 @@ using namespace IceGrid;
# undef yywrap
# define yywrap() 1
# endif
+# define YY_NO_UNISTD_H
#endif
#define YY_INPUT(buf, result, maxSize) parser->getInput(buf, result, maxSize)