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-rw-r--r--Makefile.posix8
1 files changed, 4 insertions, 4 deletions
diff --git a/Makefile.posix b/Makefile.posix
index b9e0b44..5439214 100644
--- a/Makefile.posix
+++ b/Makefile.posix
@@ -1,4 +1,4 @@
-GNU_INSTALL_ROOT := /opt/gcc-arm-none-eabi-4_8-2014q2
-GNU_VERSION := 4.8.4
-GNU_PREFIX := arm-none-eabi
-
+GNU_INSTALL_ROOT ?= /opt/gcc-arm-none-eabi-4_8-2014q2
+GNU_VERSION := 4.8.4
+GNU_PREFIX := arm-none-eabi
+