Separate cmake files

1 files changed, 38 insertions, 0 deletions

diff --git a/cmake/checks.cmake b/cmake/checks.cmake
new file mode 100644
index 0000000..cd80856
--- /dev/null
+++ b/cmake/checks.cmake
@@ -0,0 +1,38 @@
+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)