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cares.cmake
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cares.cmake
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option(USE_BUNDLED_CARES "Enable building of the bundled c-ares" ${USE_BUNDLED_DEPS})
if(CARES_INCLUDE)
# we already have c-ares
elseif(NOT USE_BUNDLED_CARES)
find_path(CARES_INCLUDE NAMES cares/ares.h ares.h)
find_library(CARES_LIB NAMES cares)
if(CARES_INCLUDE AND CARES_LIB)
message(STATUS "Found c-ares: include: ${CARES_INCLUDE}, lib: ${CARES_LIB}")
else()
message(FATAL_ERROR "Couldn't find system c-ares")
endif()
else()
if(BUILD_SHARED_LIBS)
set(CARES_LIB_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX})
set(CARES_CPPFLAGS )
set(CARES_STATIC_OPTION )
else()
set(CARES_LIB_SUFFIX ${CMAKE_STATIC_LIBRARY_SUFFIX})
set(CARES_CPPFLAGS -DCARES_STATICLIB)
set(CARES_STATIC_OPTION --disable-shared)
endif()
set(CARES_SRC "${PROJECT_BINARY_DIR}/c-ares-prefix/src/c-ares")
set(CARES_INCLUDE "${CARES_SRC}/target/include/")
set(CARES_LIB "${CARES_SRC}/target/lib/libcares${CARES_LIB_SUFFIX}")
set(CARES_INSTALL_DIR "${CARES_SRC}/target")
if(NOT TARGET c-ares)
message(STATUS "Using bundled c-ares in '${CARES_SRC}'")
ExternalProject_Add(c-ares
PREFIX "${PROJECT_BINARY_DIR}/c-ares-prefix"
URL "https://c-ares.haxx.se/download/c-ares-1.19.1.tar.gz"
URL_HASH "SHA256=321700399b72ed0e037d0074c629e7741f6b2ec2dda92956abe3e9671d3e268e"
CONFIGURE_COMMAND CPPFLAGS=${CARES_CPPFLAGS} ./configure ${CARES_STATIC_OPTION} --prefix=${CARES_INSTALL_DIR}
BUILD_COMMAND ${CMAKE_MAKE_PROGRAM}
BUILD_IN_SOURCE 1
BUILD_BYPRODUCTS ${CARES_INCLUDE} ${CARES_LIB}
INSTALL_COMMAND ${CMAKE_MAKE_PROGRAM} install)
install(FILES "${CARES_LIB}" DESTINATION "${CMAKE_INSTALL_LIBDIR}/${LIBS_PACKAGE_NAME}"
COMPONENT "libs-deps")
install(DIRECTORY "${CARES_INCLUDE}" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${LIBS_PACKAGE_NAME}"
COMPONENT "libs-deps")
endif()
endif()
if(NOT TARGET c-ares)
add_custom_target(c-ares)
endif()
include_directories("${CARES_INCLUDE}")