CMake ne peut pas trouver la bibliothèque OpenSSL

Question

J'essaie d'installer un logiciel qui utilise cmake pour s'installer lui-même. Lorsque je lance cmake .. sur la ligne de commande, il me donne l'erreur suivante dans le fichier CMakeLists.txt sur la ligne qui dit find_package(OpenSSL REQUIRED) :

-- 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)

Voici la partie du fichier CMakeLists.txt d'où vient l'erreur :

#
# 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)

J'ai installé OpenSSL ici :

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

J'ai dans mon .profile :

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

Comment puis-je résoudre cette erreur ?

EDIT :

Maintenant, j'obtiens cette erreur

/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'

Answer 1

Si vous utilisez macOS, suivez les étapes ci-dessous.

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

Effacer le cmake build et réexécutez le cmake ..

Answer 2

Vous avez le fichier FindOpenSSL.cmake dans le module cmake(path usr/shared.cmake-3.5/modules) # Rechercher OpenSSL

 find_package(OpenSSL REQUIRED) 
if( OpenSSL_FOUND )
    include_directories(${OPENSSL_INCLUDE_DIRS})
    link_directories(${OPENSSL_LIBRARIES})
    message(STATUS "Using OpenSSL ${OPENSSL_VERSION}")

target_link_libraries(project_name /path/of/libssl.so /path/of/libcrypto.so)

Answer 3

Note pour les utilisateurs de Fedora 27 : J'ai dû installer openssl-devel pour exécuter le cmake avec succès.

sudo dnf install openssl-devel

Answer 4

@Morwenn a raison. Vous devez configurer le DIR d'openssl. Avant cela, vous devez vous assurer que vous l'avez. vous devez vérifier si vous l'avez. première exécution openssl version ,alors si vous l'avez vous pouvez win + r exécuter openssl et vous trouverez le répertoire principal car il se peut qu'il ne soit pas nommé openssl dans votre système.

Answer 5

C'est ce que j'ai ajouté dans le CMakeList.txt (ce qui a fonctionné) :

# https://cmake.org/cmake/help/latest/command/find_package.html
# in the above link, it states:
# "In Module mode, CMake searches for a file called Find<PackageName>.cmake. 
#  The file is first searched in the CMAKE_MODULE_PATH, then among the Find 
#  Modules provided by the CMake installation. If the file is found, it is
#  read and processed by CMake. It is responsible for finding the package,
#  checking the version, and producing any needed messages. Some find-modules
#  provide limited or no support for versioning; check the module documentation."
#
# FindOpenSSL.cmake can be found in path/to/cmake/Modules
#
# https://cmake.org/cmake/help/latest/module/FindOpenSSL.html
#

find_package(OpenSSL REQUIRED)
if (OPENSSL_FOUND)
  # Add the include directories for compiling
  target_include_directories(${PROJECT_NAME} PUBLIC ${OPENSSL_INCLUDE_DIR})

  # Add the static lib for linking
  target_link_libraries(${PROJECT_NAME} OpenSSL::SSL OpenSSL::Crypto)

  message(STATUS "Found OpenSSL ${OPENSSL_VERSION}")

else()

  message(STATUS "OpenSSL Not Found")

endif()