mirror of
https://github.com/warmcat/libwebsockets.git
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4c50636912
When building without systemd event support (-DLWS_WITH_SDEVENT=OFF) on a system that has libsystemd headers installed, lib/plat/unix-systemd.c is build in anyway. The final libwebsockets library has then references to symbols from libsystemd even though it won't be linked. Resulting in the follwoing linker errros: -- /usr/bin/ld: /usr/local/lib/libwebsockets.so: undefined reference to `sd_is_socket_inet' /usr/bin/ld: /usr/local/lib/libwebsockets.so: undefined reference to `sd_is_socket_unix' /usr/bin/ld: /usr/local/lib/libwebsockets.so: undefined reference to `sd_listen_fds' -- This commit ensures that unix-system.c is only build when LWS_WITH_SDEVENT is set and the system has libsystemd headers installed. Signed-off-by: Daniel Danzberger <dd@embedd.com>
115 lines
3.2 KiB
CMake
115 lines
3.2 KiB
CMake
#
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# libwebsockets - small server side websockets and web server implementation
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#
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# Copyright (C) 2010 - 2020 Andy Green <andy@warmcat.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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#
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# The strategy is to only export to PARENT_SCOPE
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#
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# - changes to LIB_LIST
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# - changes to SOURCES
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# - includes via include_directories
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#
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# and keep everything else private
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include_directories(.)
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execute_process( COMMAND grep -c illumos /lib/ld.so.1
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OUTPUT_VARIABLE ILLUMOS ERROR_QUIET )
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# Chomp the \n at end of output.
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string(REGEX REPLACE "[\n]+" "" ILLUMOS "${ILLUMOS}")
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if (NOT ${ILLUMOS} MATCHES "0")
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set(ILLUMOS 1)
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endif()
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set(LWS_PLAT_UNIX 1)
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list(APPEND SOURCES
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plat/unix/unix-caps.c
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plat/unix/unix-misc.c
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plat/unix/unix-init.c
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)
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if (LWS_WITH_FILE_OPS)
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list(APPEND SOURCES plat/unix/unix-file.c)
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endif()
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if (LWS_WITH_NETWORK)
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list(APPEND SOURCES
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plat/unix/unix-pipe.c
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plat/unix/unix-service.c
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plat/unix/unix-sockets.c
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plat/unix/unix-fds.c
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)
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if (LWS_WITH_SYS_ASYNC_DNS)
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if (LWS_PLAT_ANDROID)
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list(APPEND SOURCES plat/unix/android/android-resolv.c)
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else()
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list(APPEND SOURCES plat/unix/unix-resolv.c)
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endif()
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endif()
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if (LWS_WITH_SDEVENT AND LWS_HAVE_SYSTEMD_H)
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list(APPEND SOURCES
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plat/unix/unix-systemd.c
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)
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list(APPEND LIB_LIST_AT_END systemd)
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endif()
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endif()
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if (LWS_WITH_PLUGINS_API)
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list(APPEND SOURCES plat/unix/unix-plugins.c)
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endif()
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if (LWS_WITH_SPAWN)
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list(APPEND SOURCES plat/unix/unix-spawn.c)
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endif()
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if (HAIKU)
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set(CMAKE_REQUIRED_LIBRARIES network)
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list(APPEND LIB_LIST_AT_END network)
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endif()
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IF (CMAKE_SYSTEM_NAME STREQUAL Linux AND NOT LWS_WITHOUT_EVENTFD)
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CHECK_FUNCTION_EXISTS(eventfd_read LWS_HAVE_EVENTFD)
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endif()
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list(APPEND LIB_LIST_AT_END m)
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if (ILLUMOS)
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list(APPEND LIB_LIST_AT_END socket)
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endif()
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if (LWS_HAVE_LIBCAP)
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list(APPEND LIB_LIST_AT_END cap)
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endif()
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if (${CMAKE_SYSTEM_NAME} MATCHES "QNX")
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list(APPEND LIB_LIST_AT_END socket)
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endif()
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list(APPEND LIB_LIST_AT_END ${CMAKE_DL_LIBS})
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#
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# Keep explicit parent scope exports at end
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#
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exports_to_parent_scope()
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set(LWS_PLAT_UNIX ${LWS_PLAT_UNIX} PARENT_SCOPE)
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set(ILLUMOS ${ILLUMOS} PARENT_SCOPE)
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set(LIB_LIST_AT_END ${LIB_LIST_AT_END} PARENT_SCOPE)
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set(LWS_PLAT_UNIX ${LWS_PLAT_UNIX} PARENT_SCOPE)
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