如何将ICU库添加到项目中？

Question

请帮帮我。我想将 ICU 库添加到我的项目中。我的 cmake 版本是 2.8.12.2。

有 CMakeLists.txt

cmake_minimum_required（版本 2.8）

项目（测试1）

设置（CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}）
设置（CMAKE_CXX_COMPILER /usr/bin/g++）
设置（CMAKE_CXX_FLAGS“${CMAKE_CXX_FLAGS} -D_GLIBCXX_USE_CXX11_ABI=0 -std=c++11 -W”

find_package(Boost 1.54.0 COMPONENTS 文件系统系统正则表达式 unit_test_framework REQUIRED)
find_package(ICU 52.0 REQUIRED)

包含目录（${Boost_INCLUDE_DIR}）
链接目录（${Boost_LIBRARY_DIR}）

add_executable(test1 src/dictionary.cpp src/main.cpp)
target_link_libraries(test1 ${Boost_LIBRARIES} pthread)

我已经安装了 ICU 库：libicu-dev、libicu-dev:i386、libicu52、libicu52:i386、libicu52-dbg:i386

但是一旦我运行 CMake，我就会收到以下错误消息：

CMake Error at CMakeLists.txt:10 (find_package):
  By not providing "FindICU.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "ICU", but
  CMake did not find one.

  Could not find a package configuration file provided by "ICU" (requested
  version 52.1) with any of the following names:

    ICUConfig.cmake
    icu-config.cmake

  Add the installation prefix of "ICU" to CMAKE_PREFIX_PATH or set "ICU_DIR"
  to a directory containing one of the above files.  If "ICU" provides a
  separate development package or SDK, be sure it has been installed.

我该怎么办？请帮帮我。

Answer 1

使用 CMake 3.13。

add_executable(myapp
    main.cpp
)

# ICU Components Reference:
# https://cmake.org/cmake/help/latest/module/FindICU.html
# ICU components = data, i18n, io, le, lx, test, tu and uc.

find_package(ICU 61.0 COMPONENTS uc i18n REQUIRED)

# Link using the imported target names (ICU::uc, ICU::i18n, etc.)

target_link_libraries(myapp ICU::uc ICU::i18n)

注意：除非我在 find_package 语句中专门列出了组件，否则这将不起作用。

Answer 2

通过在http://github.com/julp/FindICU.cmake的项目目录顶部添加文件 FindICU.cmake 解决了这个问题