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authorDean Camera <dean@fourwalledcubicle.com>2012-06-21 20:06:10 +0000
committerDean Camera <dean@fourwalledcubicle.com>2012-06-21 20:06:10 +0000
commit8ccc2b2272564440cedc484b7c9cc8b5b7230ccf (patch)
tree403dfad84987d467552c534680ed590b14876aa1 /LUFA/Build/lufa.atprogram.in
parentcce71a74e79c61e3b0975ac41d13147383d257ac (diff)
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Minor build system improvements - force default shell.
Diffstat (limited to 'LUFA/Build/lufa.atprogram.in')
-rw-r--r--LUFA/Build/lufa.atprogram.in8
1 files changed, 5 insertions, 3 deletions
diff --git a/LUFA/Build/lufa.atprogram.in b/LUFA/Build/lufa.atprogram.in
index 95b0a9702..f9f5dfc9c 100644
--- a/LUFA/Build/lufa.atprogram.in
+++ b/LUFA/Build/lufa.atprogram.in
@@ -48,9 +48,11 @@ LUFA_BUILD_PROVIDED_MACROS +=
#
# -----------------------------------------------------------------------------
-ERROR_IF_UNSET = $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
-ERROR_IF_EMPTY = $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
-ERROR_IF_NONBOOL = $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
+SHELL = /bin/sh
+
+ERROR_IF_UNSET ?= $(if $(filter undefined, $(origin $(strip $(1)))), $(error Makefile $(strip $(1)) value not set))
+ERROR_IF_EMPTY ?= $(if $(strip $($(strip $(1)))), , $(error Makefile $(strip $(1)) option cannot be blank))
+ERROR_IF_NONBOOL ?= $(if $(filter Y N, $($(strip $(1)))), , $(error Makefile $(strip $(1)) option must be Y or N))
# Default values of optionally user-supplied variables
ATPROGRAM_PROGRAMMER ?= jtagice3