我正在尝试安装一个使用cmake来安装自己的软件。当我运行cmake ..在命令行中,它会在CMakeLists.txt中显示find_package(OpenSSL REQUIRED)的行中给出以下错误:

-- Could NOT find Git (missing:  GIT_EXECUTABLE) 
ZLib include dirs: /usr/include
ZLib libraries: /usr/lib/arm-linux-gnueabihf/libz.so
Compiling with SSL support
CMake Error at /usr/local/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:97 (message):
  Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the
  system variable OPENSSL_ROOT_DIR (missing: OPENSSL_LIBRARIES
  OPENSSL_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/local/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:291 (_FPHSA_FAILURE_MESSAGE)
  /usr/local/share/cmake-2.8/Modules/FindOpenSSL.cmake:313 (find_package_handle_standard_args)
  CMakeLists.txt:436 (find_package)

下面是文件CMakeLists.txt的错误来源:

#
# OpenSSL
#
if (WITH_SSL)
    message("Compiling with SSL support")

    if (USE_CYASSL)
        # Use CyaSSL as OpenSSL replacement.
        # TODO: Add a find_package command for this also.
        message("CyaSSL include dir: ${CYASSL_INCLUDE_DIRS}")
        message("CyaSSL libraries: ${CYASSL_LIB}")

        # Additional to the root directory we need to include
        # the cyassl/ subdirectory which contains the OpenSSL
        # compatability layer headers.
        foreach(inc ${CYASSL_INCLUDE_DIRS})
            include_directories(${inc} ${inc}/cyassl)
        endforeach()

        list(APPEND LIB_LIST ${CYASSL_LIB})
    else()
        # TODO: Add support for STATIC also.
        find_package(OpenSSL REQUIRED)

        message("OpenSSL include dir: ${OPENSSL_INCLUDE_DIR}")
        message("OpenSSL libraries: ${OPENSSL_LIBRARIES}")

        include_directories(${OPENSSL_INCLUDE_DIR})
        list(APPEND LIB_LIST ${OPENSSL_LIBRARIES})
    endif()
endif(WITH_SSL)

我在这里安装了OpenSSL:

ssl header is here   -- > /usr/local/ssl/include/openssl/
ssl library is here  -- > /usr/local/ssl/lib/libssl.a
                          /usr/local/ssl/lib/libcrypto.a
openssl is here      -- > /usr/local/ssl/bin

我在我的。profile中有:

export LD_LIBRARY_PATH=/usr/local/ssl/include/openssl:/usr/lib:/usr/local/lib:/usr/lib/pkgconfig:/usr/local/include/wx-2.8/wx:$LD_LIBRARY_PATH
export PKG_CONFIG_PATH=/usr/lib/pkgconfig
export OPENSSL_ROOT_DIR=/usr/local/ssl
export OPENSSL_LIBRARIES=/usr/local/ssl/lib/

PATH = /usr/local/ssl/bin:$PATH

如何解决此错误?

编辑:

现在我得到了这个错误

/usr/local/lib/libcrypto.a(dso_dlfcn.o): In function `dlfcn_globallookup':
dso_dlfcn.c:(.text+0x10): undefined reference to `dlopen'
dso_dlfcn.c:(.text+0x24): undefined reference to `dlsym'
dso_dlfcn.c:(.text+0x30): undefined reference to `dlclose'

当前回答

@Morwenn是对的。 需要配置openssl DIR。 在此之前,你可能需要确保你有它。 你应该检查一下你是否有。 首先运行openssl版本,然后如果你有它,你可以赢+ r运行openssl 你会找到核心目录,因为它在你的系统中可能不是openssl。

其他回答

只是为了好玩,我将为OP的问题发布一个替代的工作答案:

cmake -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl/ -DOPENSSL_CRYPTO_LIBRARY=/usr/local/opt/openssl/lib/

@Morwenn是对的。 需要配置openssl DIR。 在此之前,你可能需要确保你有它。 你应该检查一下你是否有。 首先运行openssl版本,然后如果你有它,你可以赢+ r运行openssl 你会找到核心目录,因为它在你的系统中可能不是openssl。

如果您使用的是macOS,那么请按照以下步骤进行操作。

brew upgrade openssl
brew link --force openssl
pkg-config --modversion openssl
#1.1.1l

清除cmake build文件夹并重新运行cmake ..

Fedora 27用户注意:我必须安装openssl-devel包才能成功运行cmake。

Sudo DNF安装openssl-devel

在运行sudo apt install libssl-dev后,在WSL上我仍然得到了错误。

我必须运行whereis openssl,然后更新CMakeCache.txt中的注释行:

#OPENSSL_CRYPTO_LIBRARY:FILEPATH=OPENSSL_CRYPTO_LIBRARY-NOTFOUND
OPENSSL_CRYPTO_LIBRARY:FILEPATH=/usr/bin/openssl

#OPENSSL_INCLUDE_DIR:PATH=OPENSSL_INCLUDE_DIR-NOTFOUND
OPENSSL_INCLUDE_DIR:PATH=/usr/include/openssl