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 --- Changes in v12: None Changes in v11: None Changes in v10: - Rebase on current u-boot-arm/master.
Changes in v9: None Changes in v8: - New patch.
Changes in v7: None Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None
Makefile | 7 +------ config.mk | 7 +++++++ 2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/Makefile b/Makefile index 8d0e2b8..caca851 100644 --- a/Makefile +++ b/Makefile @@ -46,12 +46,7 @@ HOSTARCH := $(shell uname -m | \ HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \ sed -e 's/(cygwin).*/cygwin/')
-# 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 HOSTARCH HOSTOS SHELL +export HOSTARCH HOSTOS
# Deal with colliding definitions from tcsh etc. VENDOR= diff --git a/config.mk b/config.mk index 4e6a19b..1fd109f 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