On 10/09/2025 22:21, Lipódi László via Boost-users wrote:
Dear Boost::regex_icu users!
I've ran into a problem while using the regex library of Boost with ICU
compatibility mode.
I am getting a lot of linker errors about ICU functions. This is all the linker
errors I get: https://pastebin.com/eCj8Pi2m
I am pretty sure that I'm getting this while using
`boost::u32regex_token_iterator`.
I'm using CMake to build my project and CPM (A wrapper around FetchContent).
Here is my CMakeLists.txt:
```
cmake_minimum_required(VERSION 3.12)
project(termeszetes_nyelvi)
include(cmake/CPM.cmake)
set(CMAKE_CXX_STANDARD 26)
set(BOOST_REGEX_STANDALONE ON)
set(ICU_ROOT "C:/Program Files/icu")
CPMAddPackage("gh:boostorg/regex#boost-1.89.0")
add_executable(termeszetes_nyelvi main.cpp
regex_utils/regex_match_collector.hpp
regex_utils/split_string_using_regex.hpp
print_utils/format_map.hpp)
target_link_libraries(termeszetes_nyelvi PRIVATE Boost::regex_icu)```
I have tried linking to all ICU components, but it did not resolve my errors.
Your linker error is definitely from ICU: I believe the first of the
errors relates to the contents of icuin.dll linked to via icuin.lib.
However, I know nothing about CMake so your problem likely comes from
there...
John.
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