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authorIngo Bauersachs <ingo.bauersachs@xovis.com>2022-12-01 18:39:52 +0100
committerAzat Khuzhin <azat@libevent.org>2023-05-16 07:46:56 +0200
commitacfac7ae4a3edbbb7ce4ceee7208b4245a6e203e (patch)
treed5cff6a42f735e390e30a8ededa681b12a35ff09 /sha1.h
parent81c6b8823c1b58d7837e827bb1098aa5f9e5956b (diff)
downloadlibevent-acfac7ae4a3edbbb7ce4ceee7208b4245a6e203e.tar.gz
Make dependency paths relocatable
The generated configurations for both CMake and pkg-config included absolute paths to dependencies (OpenSSL, MbedTLS). This is contrary to the general CMake advise to create relocatable packages [1]. Additionally, when building both mbedtls and libevent via CMake's FetchContent in the same project, loading the project would fail with INTERFACE_INCLUDE_DIRECTORIES property contains path: "/home/user/project/cmake-build/_deps/mbedtls-build/include" which is prefixed in the source directory. The required changes include: - Adding the outer includes only to the BUILD_INTERFACE solves the makes the CMake paths relocatable and thus solves the FetchContent problem. - Updates to libevent_*.pc.in fixes the relocatable issues for pkg-config and properly declares currently missing dependencies. - Using components for linking to OpenSSL (requiring CMake 3.4) and MbedTLS. The new MbedTLS target names now match the component names of the MbedTLS' CMake project. - Use the Threads CMake library reference instead of a direct reference to support both built-in pthread and -lpthread. v2 (azat): get back CMAKE_REQUIRED_LIBRARIES [1] https://cmake.org/cmake/help/v3.25/manual/cmake-packages.7.html#creating-relocatable-packages
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