Question

我正在尝试将一系列外部库（使用libjpeg的liblept）链接到项目。许多尝试和搜索互联网只会导致不同的cmake错误，这是非常令人困惑的

项目文件夹的结构：

/Project
  |leptonica
  |--|include
  |  |--|leptonica
  |  |  |--|<allheaders.h used by main.cpp is here>
  |  |  |<jpeglib.h used by Leptonica is here>
  |  |lib
  |  |--|<.lib files here>
  |CMakeLists.txt
  |main.cpp

现在，CMakeLists。关于链接这些库我唯一知道的是，Stack Overflow周围的基本技巧会产生不同的错误。除以下情况外：

这会使项目链接，但应用程序崩溃0xC0000135（找不到dll）。

cmake_minimum_required(VERSION 3.5)
project(Project)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES main.cpp)

add_library(liblept168 STATIC IMPORTED)
set_target_properties(
    liblept168
    PROPERTIES LINKER_LANGUAGE CXX
    IMPORTED_LOCATION %Project%/leptonica/lib/liblept168.lib)
add_library(libjpeg8c-static-mtdll STATIC IMPORTED)
set_target_properties(
    libjpeg8c-static-mtdll
    PROPERTIES LINKER_LANGUAGE CXX
    IMPORTED_LOCATION %Project%/leptonica/lib/libjpeg8c-static-mtdll.lib)
link_directories(leptonica/lib)
include_directories(leptonica/include)
include_directories(leptonica/include/leptonica)

add_executable(Project "${SOURCE_FILES}")
target_link_libraries(Project liblept168 libjpeg8c-static-mtdll)

有什么问题？

Answer 1

感谢杰克关于.lib的说明我发现了问题。问题是liblept168.lib是liblept168.dll的链接文件，而不是静态库。因此，应将dll复制到可执行文件夹中。生成的CMakeLists如下所示：

cmake_minimum_required(VERSION 3.5)
project(Jpeg_to_values)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES main.cpp)

add_library(liblept168 SHARED IMPORTED)
set_target_properties(
    liblept168
    PROPERTIES LINKER_LANGUAGE CXX
    IMPORTED_LOCATION ${PROJECT_SOURCE_DIR}/leptonica/lib/liblept168.dll
    IMPORTED_IMPLIB ${PROJECT_SOURCE_DIR}/leptonica/lib/liblept168.lib)
add_library(libjpeg8c-static-mtdll STATIC IMPORTED)
set_target_properties(
        libjpeg8c-static-mtdll
        PROPERTIES LINKER_LANGUAGE CXX
        IMPORTED_LOCATION ${PROJECT_SOURCE_DIR}/leptonica/lib/libjpeg8c-static-mtdll.lib)
link_directories(leptonica/lib)
include_directories(leptonica/include)
include_directories(leptonica/include/leptonica)

add_executable(Jpeg_to_values "${SOURCE_FILES}")
target_link_libraries(Jpeg_to_values liblept168 libjpeg8c-static-mtdll)

add_custom_command(
        TARGET Jpeg_to_values POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E copy_if_different
        "${PROJECT_SOURCE_DIR}/leptonica/lib/liblept168.dll"
        "$<TARGET_FILE_DIR:Jpeg_to_values>")

Cmake：静态链接需要运行时的库（appcrash 0xC0000135）

1 个答案: