[libsecret] build: Make DBus code generation more portable

[Daiki Ueno <dueno src gnome org>]

commit a7f2efc4502e9eee3328502c9f7be0a3d87beb46
Author: Daiki Ueno <dueno src gnome org>
Date:   Fri Mar 30 16:30:48 2018 +0200

    build: Make DBus code generation more portable
    
    The $'...' quoting syntax is a Bash extension and might not be
    available in other Bourne Shell compatible shells:
    
https://www.gnu.org/software/bash/manual/html_node/Major-Differences-From-The-Bourne-Shell.html#Major-Differences-From-The-Bourne-Shell
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734630

 libsecret/Makefile.am |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/libsecret/Makefile.am b/libsecret/Makefile.am
index 0157b3f..1d1c489 100644
--- a/libsecret/Makefile.am
+++ b/libsecret/Makefile.am
@@ -89,10 +89,10 @@ temp-dbus-generated.c: $(DBUS_XML_DEFINITIONS) Makefile.am
        $(AM_V_GEN) gdbus-codegen --interface-prefix org.freedesktop.Secret. \
                --generate-c-code temp-dbus-generated --c-namespace SecretGen $<
 secret-dbus-generated.c: temp-dbus-generated.c Makefile.am
-       $(AM_V_GEN) sed -e $$'1i\\\n#define GLIB_DISABLE_DEPRECATION_WARNINGS' \
-               -e 's/secret_gen_/_secret_gen_/g' -e 's/type-/type/g' \
+       $(AM_V_GEN) { echo '#define GLIB_DISABLE_DEPRECATION_WARNINGS'; \
+               sed -e 's/secret_gen_/_secret_gen_/g' -e 's/type-/type/g' \
                -e 's/temp-dbus-generated.h/secret-dbus-generated.h/g' \
-               temp-dbus-generated.c > secret-dbus-generated.c
+               temp-dbus-generated.c; } > secret-dbus-generated.c
 secret-dbus-generated.h: temp-dbus-generated.c Makefile.am
        $(AM_V_GEN) sed -e 's/secret_gen_/_secret_gen_/g' -e 's/type-/type/g' \
                temp-dbus-generated.h > secret-dbus-generated.h