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-rw-r--r--tools/mapjson/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/mapjson/Makefile b/tools/mapjson/Makefile
index 9a49be5..c1f703f 100644
--- a/tools/mapjson/Makefile
+++ b/tools/mapjson/Makefile
@@ -1,4 +1,4 @@
-CXX := g++
+CXX ?= g++
CXXFLAGS := -Wall -std=c++11 -O2