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-rw-r--r--util/superiotool/Makefile6
1 files changed, 3 insertions, 3 deletions
diff --git a/util/superiotool/Makefile b/util/superiotool/Makefile
index 060dd41..900b8ae 100644
--- a/util/superiotool/Makefile
+++ b/util/superiotool/Makefile
@@ -20,9 +20,9 @@
PROGRAM = superiotool
-CC = gcc
-INSTALL = /usr/bin/install
-PREFIX = /usr/local
+CC ?= gcc
+INSTALL ?= /usr/bin/install
+PREFIX ?= /usr/local
# Set the superiotool version string to the output of 'git describe'.
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