Replace "echo -e" with "printf" to have the same behavior in dash or bash

oe-core removed the prerequisite to have sh as bash. POSIX doesn't define
any options and furthermore allows 'echo -e' to be the default behavior.
This means that in dash 'echo -e' will actually print '-e' and interpret
backslashes by default. We use instead 'printf' builtin command with or
without '\n' to simulate 'echo -e' or 'echo -n'.
'printf' needs format while 'echo' can be used without any arguments. So
'echo >' was replaced by 'printf "" >'.
'echo' without '-n' flag adds a new line by default so to keep the same
behavior of two new lines while using 'echo "\n"', 'printf "\n\n"' is
used.

[YOCTO #3138]

(From OE-Core rev: a19880ad10ccb5d7d909dcf9de5c3dc58a0ebcd3)

Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/meta/recipes-extended/libzypp/libzypp_git.bb b/meta/recipes-extended/libzypp/libzypp_git.bb
index 3a323e7e15..1729c78a20 100644
--- a/meta/recipes-extended/libzypp/libzypp_git.bb
+++ b/meta/recipes-extended/libzypp/libzypp_git.bb
@@ -106,10 +106,10 @@ do_archgen () {
                                 continue;;
                 esac
                 if [ "${AVOID_CONSTRUCTOR}" != "true" ]; then
-                  echo -n "  const Arch Arch_${each_arch} " | tr - _            >> zypp/oe-arch.h
+                  printf "  const Arch Arch_${each_arch} " | tr - _             >> zypp/oe-arch.h
                   echo "(_${each_arch});" | tr - _                              >> zypp/oe-arch.h
                 else
-                  echo -n "  const Arch Arch_${each_arch} " | tr - _            >> zypp/oe-arch.h
+                  printf "  const Arch Arch_${each_arch} " | tr - _             >> zypp/oe-arch.h
                   echo "( IdString ( \"${each_arch}\" ) );" | tr - _            >> zypp/oe-arch.h
                 fi
         done