Reputation: 11
I am trying to use CMake build system using the CLion IDE for a project. I need to get libCURL and OpenSSL from the github repo using FetchContent
. I want to first build OpenSSL statically and then tell CMake to pass the OpenSSL::SSL
to libCURL so it can statically link it. Also note that since OpenSSL does not use the CMake build system I am relying on janbar/openssl-cmake Github repo for building the 1.1.1w
version of OpenSSL.
Here's what i have gotten so far,
cmake_minimum_required(VERSION 3.28)
set(PROJECT_NAME untitled)
project(${PROJECT_NAME} C)
set(CMAKE_C_STANDARD 11)
include(FetchContent)
FetchContent_Declare(
curl
URL "https://github.com/curl/curl/archive/refs/tags/curl-8_7_1.tar.gz"
OVERRIDE_FIND_PACKAGE
)
FetchContent_Declare(
openssl
URL "https://github.com/janbar/openssl-cmake/archive/refs/tags/1.1.1w-20231130.tar.gz"
OVERRIDE_FIND_PACKAGE
)
FetchContent_MakeAvailable(openssl)
set(BUILD_STATIC_LIBS ON CACHE INTERNAL "Build static libraries" FORCE)
set(BUILD_SHARED_LIBS OFF CACHE INTERNAL "Switch off building shared libraries" FORCE)
set(ENABLE_WEBSOCKETS ON CACHE INTERNAL "Set to ON to enable EXPERIMENTAL websockets" FORCE)
set(BUILD_CURL_EXE OFF CACHE BOOL "Switch off building curl executable" FORCE)
set(BUILD_TESTING OFF CACHE INTERNAL "Switch off building curl tests" FORCE)
set(CURL_USE_OPENSSL ON CACHE INTERNAL "Use OpenSSL backend" FORCE)
FetchContent_MakeAvailable(curl)
add_executable(${PROJECT_NAME} main.c)
target_link_libraries(${PROJECT_NAME} CURL::libcurl_static)
Using the Reload CMake Project
button in the IDE I get the following output.
"C:\Users\ADMIN\AppData\Local\Programs\CLion Nova\bin\cmake\win\x64\bin\cmake.exe" -DCMAKE_BUILD_TYPE=Debug "-DCMAKE_MAKE_PROGRAM=C:/Users/ADMIN/AppData/Local/Programs/CLion Nova/bin/ninja/win/x64/ninja.exe" -G Ninja -S "D:\Github Projects\C\untitled1" -B "D:\Github Projects\C\untitled1\cmake-build-debug"
-- The C compiler identification is MSVC 19.35.32215.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.35.32215/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
CMake Deprecation Warning at cmake-build-debug/_deps/openssl-src/CMakeLists.txt:26 (cmake_minimum_required):
Compatibility with CMake < 3.5 will be removed from a future version of
CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.
-- The CXX compiler identification is MSVC 19.35.32215.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.35.32215/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- OpenSSL version 1.1.1w
-- MSVC: using statically-linked runtime (/MT and /MTd).
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of long
-- Check size of long - done
-- Check size of long long
-- Check size of long long - done
-- Check size of int
-- Check size of int - done
-- Looking for fcntl.h
-- Looking for fcntl.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - not found
-- Found Threads: TRUE
-- Using CMake version 3.28.1
-- curl version=[8.7.0-DEV]
-- Found Perl: C:/cygwin64/bin/perl.exe (found version "5.36.3")
-- Looking for OPENSSL_IS_BORINGSSL
-- Looking for OPENSSL_IS_BORINGSSL - not found
-- Looking for OPENSSL_IS_AWSLC
-- Looking for OPENSSL_IS_AWSLC - not found
-- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
-- Looking for SSL_set0_wbio
-- Looking for SSL_set0_wbio - not found
-- Looking for SSL_CTX_set_srp_username
-- Looking for SSL_CTX_set_srp_username - not found
-- Looking for idn2_lookup_ul in idn2
-- Looking for idn2_lookup_ul in idn2 - not found
-- Could NOT find LibPSL (missing: LIBPSL_LIBRARY LIBPSL_INCLUDE_DIR)
-- Could NOT find LibSSH2 (missing: LIBSSH2_LIBRARY LIBSSH2_INCLUDE_DIR)
-- Performing Test HAVE_WIN32_WINNT
-- Performing Test HAVE_WIN32_WINNT - Success
-- Found _WIN32_WINNT=0x0a00
-- Check size of size_t
-- Check size of size_t - done
-- Check size of ssize_t
-- Check size of ssize_t - failed
-- Check size of long long
-- Check size of long long - done
-- Check size of long
-- Check size of long - done
-- Check size of int
-- Check size of int - done
-- Check size of __int64
-- Check size of __int64 - done
-- Check size of time_t
-- Check size of time_t - done
-- Check size of ADDRESS_FAMILY
-- Check size of ADDRESS_FAMILY - done
-- Check size of off_t
-- Check size of off_t - done
-- Check size of curl_off_t
-- Check size of curl_off_t - done
-- Check size of curl_socket_t
-- Check size of curl_socket_t - done
-- Enabled features: SSL IPv6 UnixSockets AsynchDNS Largefile alt-svc HSTS NTLM HTTPS-proxy threadsafe
-- Enabled protocols: DICT FILE FTP FTPS GOPHER GOPHERS HTTP HTTPS IMAP IMAPS IPFS IPNS LDAP LDAPS MQTT POP3 POP3S RTSP SMB SMBS SMTP SMTPS TELNET TFTP WS WSS
-- Enabled SSL backends: OpenSSL
-- Configuring done (28.2s)
CMake Error at cmake-build-debug/_deps/curl-src/lib/CMakeLists.txt:128 (target_link_libraries):
Target "libcurl_object" links to:
OpenSSL::SSL
but the target was not found. Possible reasons include:
* There is a typo in the target name.
* A find_package call is missing for an IMPORTED target.
* An ALIAS target is missing.
CMake Error at cmake-build-debug/_deps/curl-src/lib/CMakeLists.txt:155 (target_link_libraries):
Target "libcurl_static" links to:
OpenSSL::SSL
but the target was not found. Possible reasons include:
* There is a typo in the target name.
* A find_package call is missing for an IMPORTED target.
* An ALIAS target is missing.
-- Generating done (0.2s)
CMake Generate step failed. Build files cannot be regenerated correctly.
[Failed to reload]
It seems that OpenSSL gets built but the Github repo I use outputs ssl
, crypto
and uninstall
modules? Idk what they are called. So my question is how do I
target_link_libraries
Upvotes: 0
Views: 719