diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e80d7cc3..f5a61f25 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,10 +1,8 @@
+# flex
 find_package(FLEX REQUIRED)
 flex_target(scan src/scan.l ${PROJECT_SOURCE_DIR}/src/lex.yy.c COMPILE_FLAGS --header-file="src/lex.yy.h")
 
-add_library(picrin SHARED
-  src/blob.c src/bool.c src/char.c src/codegen.c src/cont.c src/error.c
-  src/file.c src/gc.c src/init.c src/lib.c src/load.c src/macro.c
-  src/number.c src/pair.c src/port.c src/proc.c src/read.c src/state.c
-  src/string.c src/symbol.c src/system.c src/time.c src/var.c src/vector.c
-  src/vm.c src/write.c ${PROJECT_SOURCE_DIR}/src/lex.yy.c)
+# build!
+file(GLOB C_SOURCES ${PROJECT_SOURCE_DIR}/src/*.c)
+add_library(picrin SHARED ${C_SOURCES} ${FLEX_scan_OUTPUTS})
 target_link_libraries(picrin m xfile)