set CFLAGS only when not already defined

diff --git a/src/Makefile b/src/Makefile
index 5fe15cb5c80903b8874d67cbd425f6570dc365f6..ada69e4f4a4c33f955e78a4253d5b4c6a8283108 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,5 +1,5 @@
 CC = gcc
-CFLAGS = -O2
+CFLAGS ?= -O2
 LDLIBS = -lm
 OBJS = vnstat.o ifinfo.o dbxml.o dbshow.o dbaccess.o dbmerge.o common.o misc.o cfg.o traffic.o
 DOBJS = vnstatd.o ifinfo.o dbaccess.o dbcache.o common.o misc.o cfg.o

diff --git a/tests/Makefile b/tests/Makefile
index 9263d2ffbfeba3b0ed4ad6b2fd6c9125a5ad315e..3589a02ad2059c9baee91b86b1aeb7930b6869cb 100644 (file)
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -1,11 +1,12 @@
 CC = gcc
-CFLAGS = -Wall -Wextra -g -I../src
+CFLAGS ?= -Wall -Wextra -g
 LDLIBS = -lm -lcheck -lrt -lpthread
 OBJS = vnstat_tests.o common_tests.o database_tests.o config_tests.o ifinfo_tests.o misc_tests.o
 OBJS += common.o ifinfo.o dbaccess.o dbcache.o cfg.o misc.o
 
 vpath %.c ../src
 vpath %.h ../src
+CFLAGS += -I../src
 
 default: runtests