add: cmake with llvm

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 077811428eb3e85ddcbc79e687130d60a095e108..46c0f52bcd3aec55023a107c8f7f437dede56d18 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,16 @@
 cmake_minimum_required(VERSION 3.13.4)
 
-set(CMAKE_C_COMPILER gcc)
-set(CMAKE_C_FLAGS "-Wall -lm")
+if (LLVM_BUILD_TOOLS)
+       set(CMAKE_C_COMPILER clang)
+       set(CMAKE_C_FLAGS "-Wall")
+else()
+       set(CMAKE_C_COMPILER gcc)
+       set(CMAKE_C_FLAGS "-Wall")
+endif()
 
 project(discspan)
 
 set(SOURCES discspan.c readfile.c splitter.c help.c)
+
 add_executable(discspan ${SOURCES})
+target_link_libraries(discspan m)