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include(CheckCXXSourceRuns)
function(check_boost_regex)
set(CMAKE_REQUIRED_LIBRARIES ICU::uc ICU::data ICU::i18n Boost::headers Boost::regex)
check_cxx_source_runs([[
#include <boost/regex/icu.hpp>
#include <unicode/unistr.h>
int main()
{
U_NAMESPACE_QUALIFIER UnicodeString ustr;
try {
boost::u32regex pattern = boost::make_u32regex(ustr);
}
// an exception is fine, still indicates support is
// likely compiled into regex
catch (...) {
return 0;
}
return 0;
}
]] BOOST_REGEX_HAS_ICU)
set(BOOST_REGEX_HAS_ICU ${BOOST_REGEX_HAS_ICU} PARENT_SCOPE)
endfunction(check_boost_regex)
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