qt5base-lts/cmake/FindWrapOpenSSL.cmake
Joerg Bornemann faa26be44c CMake: Fix WrapOpenSSL package
Since f19ce3898e we link OpenSSL to
QTlsBackendOpenSSLPlugin instead of QtNetwork itself.  In dependent Qt
repositories this leads to the following situation:

QTlsBackendOpenSSLPlugin's dependencies call
find_dependency(WrapOpenSSLHeaders), and OpenSSL_FOUND is set to ON in
that scope.  Later, we call find_package(WrapOpenSSL) in a different
scope.  find_package(WrapOpenSSLHeaders) bails out early, because the
target WrapOpenSSLHeaders::WrapOpenSSLHeaders exists.
find_package(OpenSSL) is not called again.  The check for OpenSSL_FOUND
fails, because the variable is not visible in the scope of
FindWrapOpenSSL.cmake, and we don't create the WrapOpenSSL::WrapOpenSSL
target.

Fix this by checking for the existence of the target OpenSSL::SSL
instead of the OpenSSL_FOUND variable.

Pick-to: 6.2 6.3
Fixes: QTBUG-99623
Change-Id: Idd0e8a60fabd0c7772413d557442c0012b0b436c
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2022-01-07 11:16:21 +01:00

40 lines
1.2 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(TARGET OpenSSL::SSL)
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()
set_property(TARGET ${writableLib} APPEND PROPERTY INTERFACE_LINK_LIBRARIES 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
REQUIRED_VARS
OPENSSL_CRYPTO_LIBRARY
OPENSSL_INCLUDE_DIR
VERSION_VAR
OPENSSL_VERSION
)