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-rw-r--r--rules/common.mk1
1 files changed, 1 insertions, 0 deletions
diff --git a/rules/common.mk b/rules/common.mk
index 4e0c970..a517f08 100644
--- a/rules/common.mk
+++ b/rules/common.mk
@@ -51,6 +51,7 @@ CXX.64 = g++ -m64
export PATH := \
/usr/gcc/4.4/bin:/usr/gcc/4.3/bin:/usr/gnu/bin:/usr/sbin:/usr/bin:/sbin
+export CFLAGS = -O2
# Define LOCAL_MIRROR in environment, e. g. in ~/.bash_profile:
mirrors := $(LOCAL_MIRROR) \