skill issue

Makefile

@@ -8,7 +8,7 @@ CFLAGS += -I$(DEP)/include -I$(SRC)/include -I$(SRC) -D_XOPEN_SOURCE=500
 CFLAGS += -Wall -Wextra -Wno-unused-parameter -DPALERAIN_VERSION=\"2.0.0\"
 CFLAGS += -Wno-unused-variable -I$(SRC)/src -std=c99 -pedantic-errors -D_C99_SOURCE -D_POSIX_C_SOURCE=200112L
 LIBS += $(DEP)/lib/libimobiledevice-1.0.a $(DEP)/lib/libirecovery-1.0.a $(DEP)/lib/libusbmuxd-2.0.a
-LIBS += $(DEP)/lib/libimobiledevice-glue-1.0.a $(DEP)/lib/libplist-2.0.a -pthread
+LIBS += $(DEP)/lib/libimobiledevice-glue-1.0.a $(DEP)/lib/libplist-2.0.a -pthread -lm
 ifeq ($(TARGET_OS),)
 TARGET_OS = $(shell uname -s)
 endif