From f58f9b92cb67b4f1e20d49d0faa48fb515334b64 Mon Sep 17 00:00:00 2001
From: abv <abv@opencascade.com>
Date: Wed, 9 Apr 2014 14:26:37 +0400
Subject: [PATCH] Fix for building lex scanners on Windows when scanner is
 generated by flex 2.5.35 on Linux

---
 src/ExprIntrp/ExprIntrp.lex | 3 +++
 src/StepFile/step.lex       | 8 +++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/ExprIntrp/ExprIntrp.lex b/src/ExprIntrp/ExprIntrp.lex
index 53742889fe..1685364e46 100644
--- a/src/ExprIntrp/ExprIntrp.lex
+++ b/src/ExprIntrp/ExprIntrp.lex
@@ -49,6 +49,9 @@ int yywrap()
 #include <stdlib.h>
 #include <io.h>
 
+// Avoid includion of unistd.h if parser is generated on Linux (flex 2.5.35)
+#define YY_NO_UNISTD_H
+
 // disable MSVC warnings in flex 2.89 code
 #pragma warning(disable:4131 4244 4273 4127)
 #endif
diff --git a/src/StepFile/step.lex b/src/StepFile/step.lex
index f6571e1295..ada8492b97 100644
--- a/src/StepFile/step.lex
+++ b/src/StepFile/step.lex
@@ -40,9 +40,15 @@ void rec_typarg(int argtype);
   void resultat ()           /* Resultat alloue dynamiquement, "jete" une fois lu */
       { if (modcom == 0) rec_restext(yytext,yyleng); }
 
-// disable MSVC warnings in flex code
+// MSVC specifics
 #ifdef _MSC_VER
+
+// disable MSVC warnings in flex code
 #pragma warning(disable:4131 4244 4273 4267 4127)
+
+// Avoid includion of unistd.h if parser is generated on Linux (flex 2.5.35)
+#define YY_NO_UNISTD_H
+
 #endif
 
 // disable GCC warnings in flex code