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authorBenoît Thébaudeau <benoit.thebaudeau@advansee.com>2013-04-11 09:35:54 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2013-04-12 07:55:07 +0200
commit120ae6091d44dae9b63f4c4e2a14ba7b15432bbb (patch)
tree79062a4b879a5268f86a09b6f3b42503a012dccf /config.mk
parent5c6db120fc184bae7a344a4e5da83b21164b59a6 (diff)
Makefile: Move SHELL setup to config.mk
make never uses the SHELL variable from the environment. Instead, it uses /bin/sh, or the value assigned to the SHELL variable by the Makefile. This makes the export of the SHELL variable useless for sub-makes (but still useful for the environment of recipes). However, we want all makes to use the same shell. This patch fixes this issue by moving the SHELL variable setup and export to the top config.mk, so that all Makefile-s including it use the same shell. Since BASH is used by default, this makes it possible to use things like 'echo -e ...' in sub-makes, which would otherwise fail e.g. with /bin/sh symlinked to /bin/dash on Ubuntu. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Reviewed-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'config.mk')
-rw-r--r--config.mk7
1 files changed, 7 insertions, 0 deletions
diff --git a/config.mk b/config.mk
index 4e6a19bd8a..1fd109f1bd 100644
--- a/config.mk
+++ b/config.mk
@@ -23,6 +23,13 @@
#########################################################################
+# Set shell to bash if possible, otherwise fall back to sh
+SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
+ else if [ -x /bin/bash ]; then echo /bin/bash; \
+ else echo sh; fi; fi)
+
+export SHELL
+
ifeq ($(CURDIR),$(SRCTREE))
dir :=
else