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janbar / openssl-cmake

Build OpenSSL with CMake on MacOS, Win32, Win64 and cross compile for Android, IOS
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How to include this project in other cmake project? #23

Closed dearplain closed 3 years ago

dearplain commented 3 years ago

I try this, not working.

FetchContent_Declare(
        OpenSSL
        GIT_REPOSITORY https://github.com/janbar/openssl-cmake.git
        GIT_TAG "1.1.1k-20210430"
    )
    FetchContent_GetProperties(OpenSSL)
    FetchContent_MakeAvailable(OpenSSL)
anb0s commented 3 years ago

Hi, i'm using this instead of find_package(OpenSSL <version>) with released archives:

include(FetchContent)
FetchContent_Declare(
  ssl_content
  URL      https://github.com/janbar/openssl-cmake/archive/refs/tags/1.1.1k-20210430.tar.gz
  URL_HASH MD5=f4294e5de7ebb20f9a695155660f1afd
)
FetchContent_MakeAvailable(ssl_content)
add_library(OpenSSL::SSL ALIAS ssl)
add_library(OpenSSL::Crypto ALIAS crypto)

and then it can be used in same way as dependency:

target_link_libraries(<my-target>
  PRIVATE
    OpenSSL::Crypto
    OpenSSL::SSL
)

but it should work also with git repo...

anb0s commented 3 years ago

it works with Git repo and Tag too:

  include(FetchContent)
  FetchContent_Declare(
    ssl_content
    GIT_REPOSITORY https://github.com/janbar/openssl-cmake.git
    GIT_TAG "1.1.1k-20210430"
  )
  FetchContent_MakeAvailable(ssl_content)
  add_library(OpenSSL::SSL ALIAS ssl)
  add_library(OpenSSL::Crypto ALIAS crypto)

The alias definitions are optional if you want to use alias names like defined by find_package(OpenSSL <version>) - if you remove this:

  add_library(OpenSSL::SSL ALIAS ssl)
  add_library(OpenSSL::Crypto ALIAS crypto)

just use the raw target names instead:

target_link_libraries(<my-target>
  PRIVATE
    crypto
    ssl
)
dearplain commented 3 years ago 
include(FetchContent)
FetchContent_Declare(
  ssl_content
  URL      https://github.com/janbar/openssl-cmake/archive/refs/tags/1.1.1k-20210430.tar.gz
  URL_HASH MD5=f4294e5de7ebb20f9a695155660f1afd
)
FetchContent_MakeAvailable(ssl_content)
add_library(OpenSSL::SSL ALIAS ssl)
add_library(OpenSSL::Crypto ALIAS crypto)

Greate answer, but I still get error:

CMake Error at /usr/local/Cellar/cmake/3.21.2/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the
  system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY
  OPENSSL_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/local/Cellar/cmake/3.21.2/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
  /usr/local/Cellar/cmake/3.21.2/share/cmake/Modules/FindOpenSSL.cmake:574 (find_package_handle_standard_args)
  build/webrtc/_deps/libdatachannel-src/deps/libsrtp/CMakeLists.txt:61 (find_package)
dearplain commented 3 years ago

I finally make it work with patch command, thank you.

include(FetchContent)
FetchContent_Declare(
  ssl_content
  URL      https://github.com/janbar/openssl-cmake/archive/refs/tags/1.1.1k-20210430.tar.gz
  URL_HASH MD5=f4294e5de7ebb20f9a695155660f1afd
)
FetchContent_MakeAvailable(ssl_content)
add_library(OpenSSL::SSL ALIAS ssl)
add_library(OpenSSL::Crypto ALIAS crypto)

FetchContent_Declare(
        libdatachannel
        URL xxx
        PATCH_COMMAND ${SED_EXECUTABLE} -i.bak "s/find_package(OpenSSL REQUIRED)//g" CMakeLists.txt
        && ${SED_EXECUTABLE} -i.bak "s/find_package(OpenSSL REQUIRED)//g" deps/libsrtp/CMakeLists.txt
    )