Question

我尝试使用CheckIncludeFileCXX模块验证系统中是否存在<gsl/gsl>。 /usr/local/include/gsl/gsl存在GSL，但"GSL not found"

生成失败

project(cpp-binaries)
cmake_minimum_required(VERSION 3.2)

include(CheckIncludeFileCXX)
CHECK_INCLUDE_FILE_CXX("gsl/gsl" GSL_LIBRARY)

if(NOT GSL_LIBRARY)
    message(FATAL_ERROR "GSL not found")
endif(NOT GSL_LIBRARY)

add_executable(
    cpp-binaries
    "main.cpp"
)

Answer 1

好的，我更多地关注CheckIncludeFileCXX，您基本上必须使用CMAKE_REQUIRED_INCLUDES指定内容，否则它不知道在哪里搜索。为了给它一些东西，它会静静地搜索包含find_path的内容，但如果找不到任何内容，则仍然会出错。

project(gsl_t)
cmake_minimum_required(VERSION 3.2)

find_path(
    gsl_location
    gsl
    HINTS ENV GSLDIR
)

if(gsl_location)
    get_filename_component(gsl_include_dir ${gsl_location} DIRECTORY)
    list(APPEND CMAKE_INCLUDE_PATH ${gsl_include_dir})
endif(gsl_location)

include(CheckIncludeFileCXX)
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
CHECK_INCLUDE_FILE_CXX("gsl/gsl" gsl_found)

if(NOT gsl_found)
    message(FATAL_ERROR "GSL not found. \
                        Try setting the GSLDIR environment variable")
endif(NOT gsl_found)

add_executable(
    gsl_t
    "main.cpp"
)

CheckIncludeFileCXX找不到标题

1 个答案: