openjdk15-boot: add generate script and fix directory path

openjdk15-boot/Pkgfile

@@ -7,7 +7,6 @@ name=openjdk15-boot
 version=15.0.2+7
 _boot_ver=20210207
 _cert_ver=20200215
-_jdkhash=465ac9b408ca
 release=1
 source=(https://crux.ster.zone/downloads/java/openjdk-$version.tar.bz2
   https://crux.ster.zone/downloads/java/openjdk14-boot-$_boot_ver.tar.xz
@@ -40,7 +39,7 @@ build() {
   export _CFLAGS+=' -fcommon'
   export _CXXFLAGS+=' -fcommon'
   LC_ALL=C
-  /bin/bash ../jdk15u-$_jdkhash/configure $PKGMK_JDK13 \
+  /bin/bash ../jdk15u-jdk-$version/configure $PKGMK_JDK13 \
     --prefix=$SRC/build-boot/images/jdk \
     --disable-precompiled-headers \
     --disable-warnings-as-errors \
@@ -76,7 +75,7 @@ build() {
   cd $SRC/build
 
   LC_ALL=C
-  /bin/bash ../jdk15u-$_jdkhash/configure $PKGMK_JDK13 \
+  /bin/bash ../jdk15u-jdk-$version/configure $PKGMK_JDK13 \
     --prefix=/$name \
     --disable-precompiled-headers \
     --disable-warnings-as-errors \

openjdk15-boot/generate

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -e
+
+source Pkgfile
+
+echo "wget http://hg.openjdk.java.net/jdk-updates/jdk15u/archive/jdk-${version}.tar.bz2 -O openjdk-${version}.tar.bz2"
+