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include(CheckCSourceCompiles)
include(CheckPrototypeDefinition)
include(CheckSymbolExists)
include(CheckTypeSize)
set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
check_c_source_compiles("
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
int main() {
return AI_ADDRCONFIG;
}
" HAVE_AI_ADDRCONFIG)
check_prototype_definition("get_current_dir_name" "char *get_current_dir_name(void)" "NULL" "unistd.h" HAVE_GET_CURRENT_DIR_NAME)
set(RT_LIBRARY "")
check_symbol_exists("clock_gettime" "time.h" HAVE_CLOCK_GETTIME)
if(NOT HAVE_CLOCK_GETTIME)
set(RT_LIBRARY "rt")
list(APPEND CMAKE_REQUIRED_LIBRARIES "rt")
check_symbol_exists("clock_gettime" "time.h" HAVE_CLOCK_GETTIME_RT)
if(NOT HAVE_CLOCK_GETTIME_RT)
message(FATAL_ERROR "clock_gettime() not found")
endif(NOT HAVE_CLOCK_GETTIME_RT)
endif(NOT HAVE_CLOCK_GETTIME)
set(CMAKE_EXTRA_INCLUDE_FILES "netinet/if_ether.h")
check_type_size("struct ethhdr" SIZEOF_ETHHDR)
string(COMPARE NOTEQUAL "${SIZEOF_ETHHDR}" "" HAVE_ETHHDR)
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