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Fix for redefinition warning

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This commit is contained in:
Henry Fredrick Schreiner 2018-04-05 13:13:51 +02:00
parent 27cb792c52
commit e6f508dc14
1 changed files with 6 additions and 0 deletions
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6
include/CLI/Optional.hpp
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@ -12,18 +12,24 @@
#if defined(CLI11_CPP17) && __has_include(<optional>)
#include <optional>
#ifdef __cpp_lib_optional
#ifndef CLI11_STD_OPTIONAL
#define CLI11_STD_OPTIONAL
#endif
#endif
#endif
#if defined(CLI11_CPP14) && __has_include(<experimental/optional>)
#include <experimental/optional>
#ifndef CLI11_EXPERIMENTAL_OPTIONAL
#define CLI11_EXPERIMENTAL_OPTIONAL
#endif
#endif
#if __has_include(<boost/optional.hpp>)
#include <boost/optional.hpp>
#ifndef CLI11_BOOST_OPTIONAL
#define CLI11_BOOST_OPTIONAL
#endif
#endif
#endif
// [CLI11:verbatim]
namespace CLI {