Add clang check for -nopie option

The -no-pie option is not available in clang until 6.0. Per the
documentation, -nopie serves the same purpose as -no-pie (but not
-fno-pie). Hence, use the -nopie option when clang is in use as the CC.

Fixes: #1237
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

src/lua/CMakeLists.txt

@@ -24,7 +24,11 @@ if (LUAJIT_LIBRARIES AND LUAJIT)
 	set_target_properties(bcc-lua PROPERTIES LINKER_LANGUAGE C)
 	target_link_libraries(bcc-lua ${LUAJIT_LIBRARIES})
 	target_link_libraries(bcc-lua -Wl,--whole-archive bcc-static -Wl,--no-whole-archive)
-	target_link_libraries(bcc-lua -no-pie)
+  if (CMAKE_C_COMPILER_ID MATCHES "Clang")
+    target_link_libraries(bcc-lua -nopie)
+  else()
+    target_link_libraries(bcc-lua -no-pie)
+  endif()
 
 	install(TARGETS bcc-lua RUNTIME DESTINATION bin)
 endif()