lokinet/cmake/unix.cmake

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CMake
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if(NOT ANDROID)
if(NOT UNIX)
return()
endif()
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endif()
include(CheckCXXSourceCompiles)
include(CheckLibraryExists)
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if(WITH_JEMALLOC)
find_package(Jemalloc REQUIRED)
if(NOT JEMALLOC_FOUND)
message(FATAL_ERROR "did not find jemalloc")
endif()
add_definitions(-DUSE_JEMALLOC)
message(STATUS "using jemalloc")
endif()
add_definitions(-DUNIX)
add_definitions(-DPOSIX)
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if (STATIC_LINK_RUNTIME OR STATIC_LINK)
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set(LIBUV_USE_STATIC ON)
endif()
option(DOWNLOAD_UV "statically compile in libuv" OFF)
# Allow -DDOWNLOAD_UV=FORCE to download without even checking for a local libuv
if(NOT DOWNLOAD_UV STREQUAL "FORCE")
find_package(LibUV 1.28.0)
endif()
if(LibUV_FOUND)
message(STATUS "using system libuv")
elseif(DOWNLOAD_UV)
message(STATUS "using libuv submodule")
set(LIBUV_ROOT ${CMAKE_SOURCE_DIR}/external/libuv)
add_subdirectory(${LIBUV_ROOT})
set(LIBUV_INCLUDE_DIRS ${LIBUV_ROOT}/include)
set(LIBUV_LIBRARY uv_a)
if(NOT ANDROID)
add_definitions(-D_LARGEFILE_SOURCE)
add_definitions(-D_FILE_OFFSET_BITS=64)
endif()
endif()
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include_directories(${LIBUV_INCLUDE_DIRS})
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if(EMBEDDED_CFG OR ${CMAKE_SYSTEM_NAME} MATCHES "Linux")
link_libatomic()
endif()
cmake refactor Refactors many things in cmake to improve and simplify: - don't use variable indirection for target names; target names are *already* a variable of sorts. (e.g. ${UTIL_LIB} is now just lokinet-util). cmake/basic_definitions.cmake is now gone. - fix LTO enabling to use the standard cmake (3.9+) LTO mechanism rather than shoving a bunch of flag hacks through link_libraries and add_compile_options. This also now enables LTO when building a shared library (because previously the -flto hacks were only turned on in the static code for some reason). - build liblokinet as *either* shared library or static library, but not both. Building both makes things more complicated because they had different names (lokinet-shared or lokinet-static) and seems pointless: you generally want one or the other. Now there is just the liblokinet target, which will be shared or static depending on the value of BUILD_SHARED_LIBS. - Simplify lokinet-cryptography AVX2 code: just build *one* library, and add in the additional AVX2 files when possible, rather than building two and needing to merge them. - Compress STATIC_LINK and STATIC_LINK_RUNTIME into just STATIC_LINK. It makes no sense to use one of these (_RUNTIME) on Windows and the other on non-Windows when they appear to try to do the same thing. - remove a bunch of annotations from `endif(FOO)` -> `endif()`. - move all the tuntap compilation code (including OS-specific source file selection) into vendor/CMakeLists.txt and build tuntap as an intermediate OBJECT library rather than keeping a global variable in 5 different files. - move release motto define to root cmake; it made no sense being duplicated in both unix.cmake and win32.cmake - fix add_log_tag to not stomp on any existing source compile flags with its definition. Also use proper compile definition property instead of cramming it into compile flags. - make optimization/linker flags less hacky. There's no reason for us to force particular optimization flags because the cmake build type already does that (e.g. -DCMAKE_BUILD_TYPE=Release does -O3). Not doing that also silences a bunch of cmake warnings because it thinks "-O0 -g3" etc. are link libraries (which is reasonable: that's what the code was telling cmake they are). - sets the default build type to RelWithDebInfo which gives us `-O2 -g` if you don't specify a build type. - Move PIC up (so that the things loaded in unix.cmake, notably libuv, have it set). - Add a custom `curl` interface library that carries the correct link target and include paths for curl (system or bundled).
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if (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
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add_definitions(-D_BSD_SOURCE)
add_definitions(-D_GNU_SOURCE)
add_definitions(-D_XOPEN_SOURCE=700)
elseif (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
if (LIBUV_USE_STATIC)
link_libraries(-lkstat -lsendfile)
endif()
endif()