Without that, compiling on some systems results in the following
error:
/bin/ld: vca_canping.o: in function `print_stats':
vca_canping.c:(.text+0x138f): undefined reference to `sqrt'
bin_PROGRAMS += vca_canping
vca_canping_SOURCES = vca_canping.c
bin_PROGRAMS += vca_canping
vca_canping_SOURCES = vca_canping.c
-vca_canping_LIBS = vca ulut
+vca_canping_LIBS = vca ulut m
ifneq ($(filter linux,$(OMK_RULES_TYPE)),)
LINK_PTHREAD_LIB_NAME ?= pthread
ifneq ($(filter linux,$(OMK_RULES_TYPE)),)
LINK_PTHREAD_LIB_NAME ?= pthread