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, 3 insertions, 3 deletions

diff --git a/meta/classes/license.bbclass b/meta/classes/license.bbclass
index 29fe93843f..ffcaf93c53 100644
--- a/meta/classes/license.bbclass
+++ b/meta/classes/license.bbclass
@@ -112,16 +112,16 @@ license_create_manifest() {
                 echo "PACKAGE NAME:" ${pkg} >> ${LICENSE_MANIFEST}
                 echo "PACKAGE VERSION:" ${pkged_pv} >> ${LICENSE_MANIFEST}
                 echo "RECIPE NAME:" ${pkged_pn} >> ${LICENSE_MANIFEST}
-                echo -n "LICENSE:" >> ${LICENSE_MANIFEST}
+                printf "LICENSE:" >> ${LICENSE_MANIFEST}
                 for lic in ${pkged_lic}; do
                         # to reference a license file trim trailing + symbol
                         if [ -e "${LICENSE_DIRECTORY}/${pkged_pn}/generic_${lic%+}" ]; then
-                                echo -n " ${lic}" >> ${LICENSE_MANIFEST}
+                                printf " ${lic}" >> ${LICENSE_MANIFEST}
                         else
                                 echo "WARNING: The license listed ${lic} was not in the licenses collected for ${pkged_pn}"
                         fi
                 done
-                echo -e "\n" >> ${LICENSE_MANIFEST}
+                printf "\n\n" >> ${LICENSE_MANIFEST}
         done
 
         # Two options here: