Releng: use previous SDK for installing the previous compiler into
diff --git a/releng/build-scripts/build/otdt_prerequisites-hipp.sh b/releng/build-scripts/build/otdt_prerequisites-hipp.sh
index cc0b37c..7742dc3 100644
--- a/releng/build-scripts/build/otdt_prerequisites-hipp.sh
+++ b/releng/build-scripts/build/otdt_prerequisites-hipp.sh
@@ -51,13 +51,22 @@
# EXPORT: Nice-level for the Ant process:
NICE="10"
-# VERSIONS:
-# Eclipse SDK build identifier (used for substitution in otdt.map.in etc.):
-SDK_QUALIFIER=${SDK_QUALIFIER:="I20190411-0625"}
-
# Architecture (as used by OSGi):
ARCH=`arch`
+# VERSIONS:
+# -- Boot:
+# used only locally (components of the ECLIPSE_BOOT_TGZ path):
+EVERSION="4.11"
+DROP="R-4.11-201903070500"
+
+# EXPORT: archive file of the boot eclipse SDK build:
+ECLIPSE_BOOT_TGZ=${DROP}/eclipse-SDK-${EVERSION}-linux-gtk-${ARCH}.tar.gz
+
+# -- Base for testing: --
+# Eclipse SDK build identifier (used for substitution in otdt.map.in etc.):
+SDK_QUALIFIER=${SDK_QUALIFIER:="I20190411-0625"}
+
# used only locally (components of the ECLIPSE_SDK_TGZ path):
EVERSION=${EVERSION:="4.12M1"}
DROP=${DROPS4}/${DROP:="S-4.12M1-201904110625"}