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35 lines
1.5 KiB
CMake
35 lines
1.5 KiB
CMake
# Choose to build static or shared library for c-ares.
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if (USE_STATIC_LIBRARIES)
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set(CARES_STATIC ON CACHE BOOL "" FORCE)
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set(CARES_SHARED OFF CACHE BOOL "" FORCE)
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else ()
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set(CARES_STATIC OFF CACHE BOOL "" FORCE)
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set(CARES_SHARED ON CACHE BOOL "" FORCE)
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endif ()
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# Disable looking for libnsl on a platforms that has gethostbyname in glibc
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#
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# c-ares searching for gethostbyname in the libnsl library, however in the
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# version that shipped with gRPC it doing it wrong [1], since it uses
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# CHECK_LIBRARY_EXISTS(), which will return TRUE even if the function exists in
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# another dependent library. The upstream already contains correct macro [2],
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# but it is not included in gRPC (even upstream gRPC, not the one that is
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# shipped with clickhousee).
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#
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# [1]: https://github.com/c-ares/c-ares/blob/e982924acee7f7313b4baa4ee5ec000c5e373c30/CMakeLists.txt#L125
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# [2]: https://github.com/c-ares/c-ares/blob/44fbc813685a1fa8aa3f27fcd7544faf612d376a/CMakeLists.txt#L146
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#
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# And because if you by some reason have libnsl [3] installed, clickhouse will
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# reject to start w/o it. While this is completelly different library.
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#
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# [3]: https://packages.debian.org/bullseye/libnsl2
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if (NOT CMAKE_SYSTEM_NAME STREQUAL "SunOS")
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set(HAVE_LIBNSL OFF CACHE BOOL "" FORCE)
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endif()
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# Force use of c-ares inet_net_pton instead of libresolv one
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set(HAVE_INET_NET_PTON OFF CACHE BOOL "" FORCE)
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add_subdirectory("../c-ares/" "../c-ares/")
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add_library(ch_contrib::c-ares ALIAS c-ares) |