qt5base-lts/cmake/FindWrapOpenSSL.cmake
Li Xinwei 29a58af4ca CMake: Fix HAVE_openssl config test when using static OpenSSL
When using static OpenSSL, HAVE_openssl test will fail, because of
unresolved external symbols. These symbols are from Ws2_32.lib and
Crypt32.lib, which CMake does not link by default. In qmake build
system, we can use OPENSSL_LIBS variable to specify these system
libraries. But there is no similar variable in CMake build system.
Accordingly, we should let OpenSSL::Crypto target link these libraries.

Upstream issue:
https://gitlab.kitware.com/cmake/cmake/-/issues/19263

Pick-to: 6.0
Change-Id: I5f27790b251d0a0f71aaf2aed2b933aeb3326f1f
Reviewed-by: Craig Scott <craig.scott@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2021-01-28 18:21:06 +00:00

34 lines
1.1 KiB
CMake

# We can't create the same interface imported target multiple times, CMake will complain if we do
# that. This can happen if the find_package call is done in multiple different subdirectories.
if(TARGET WrapOpenSSL::WrapOpenSSL)
set(WrapOpenSSL_FOUND ON)
return()
endif()
set(WrapOpenSSL_FOUND OFF)
# Reuse logic from the headers find script.
find_package(WrapOpenSSLHeaders ${WrapOpenSSL_FIND_VERSION})
if(OpenSSL_FOUND)
if(WIN32)
get_target_property(libType OpenSSL::Crypto TYPE)
if(libType STREQUAL "ALIAS")
get_target_property(writableLib OpenSSL::Crypto ALIASED_TARGET)
else()
set(writableLib OpenSSL::Crypto)
endif()
target_link_libraries(${writableLib} INTERFACE Ws2_32 Crypt32)
unset(libType)
unset(writableLib)
endif()
set(WrapOpenSSL_FOUND ON)
add_library(WrapOpenSSL::WrapOpenSSL INTERFACE IMPORTED)
target_link_libraries(WrapOpenSSL::WrapOpenSSL INTERFACE OpenSSL::SSL)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(WrapOpenSSL DEFAULT_MSG WrapOpenSSL_FOUND)