doc/Makefile: Replace non-portable echo(1) calls

The echo(1) behavior is system-dependent, the printf(1) behavior is not.

diff --git a/doc/Makefile b/doc/Makefile
index a67148798576d9f1603ff4319a515745582eb190..40c7a4652632a50e28ecab4e4f829676ffcf4221 100644 (file)
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -11,16 +11,16 @@ CONTRIBUTED_MODULES = ""
 all:   release pdf html
 
 release:
-       @echo "Notes for the releaser:"
-       @echo "* Do not forget to add a link to the release notes in guide.tex"
-       @echo "* Do not forget to update the version number in ebin/ejabberd.app!"
-       @echo "* Do not forget to update the features in introduction.tex (including \new{} and \improved{} tags)."
-       @echo "Press any key to continue"
+       @printf '%s\n' "Notes for the releaser:"
+       @printf '%s\n' "* Do not forget to add a link to the release notes in guide.tex"
+       @printf '%s\n' "* Do not forget to update the version number in ebin/ejabberd.app!"
+       @printf '%s\n' "* Do not forget to update the features in introduction.tex (including \new{} and \improved{} tags)."
+       @printf '%s\n' "Press any key to continue"
        ##@read foo
-       @echo "% ejabberd version (automatically generated)." > version.tex
-       @echo "\newcommand{\version}{"`sed '/vsn/!d;s/\(.*\)"\(.*\)"\(.*\)/\2/' ../ebin/ejabberd.app`"}" >> version.tex
-       @echo -n "% Contributed modules (automatically generated)."  > contributed_modules.tex
-       @echo -e "$(CONTRIBUTED_MODULES)" >> contributed_modules.tex
+       @printf '%s\n' "% ejabberd version (automatically generated)." > version.tex
+       @printf '%s\n' "\newcommand{\version}{"`sed '/vsn/!d;s/\(.*\)"\(.*\)"\(.*\)/\2/' ../ebin/ejabberd.app`"}" >> version.tex
+       @printf '%s'   "% Contributed modules (automatically generated)." > contributed_modules.tex
+       @printf '%b\n' "$(CONTRIBUTED_MODULES)" >> contributed_modules.tex
 
 html:  guide.html dev.html features.html