testing/openjdk9: reorder subpkg split and add -src

testing/openjdk9/APKBUILD

 # Contributor: Simon Frankenberger <simon-alpine@fraho.eu>
 # Maintainer: Simon Frankenberger <simon-alpine@fraho.eu>
 pkgname=openjdk9
-_pkgver=9.0.4+12
-pkgver=${_pkgver/+/.}
+pkgver=9.0.4_p12
+_pkgver=${pkgver/_p/+}
 pkgrel=0
 pkgdesc="Oracle OpenJDK 9"
 url="https://hg.openjdk.java.net/jdk-updates/jdk9u"
@@ -37,8 +37,9 @@ subpackages="$pkgname-jmods:_jmods:noarch
 $pkgname-demos:_demos:noarch
 $pkgname-doc:_doc:noarch
 $pkgname-dbg:_dbg
-$pkgname-jre-headless:_jre_headless
 $pkgname-jre:_jre
+$pkgname-src:_src
+$pkgname-jre-headless:_jre_headless
 $pkgname-jdk:_jdk
 "
 source="jdk-$_pkgver-root.tar.bz2::http://hg.openjdk.java.net/jdk-updates/jdk9u/archive/jdk-$_pkgver.tar.bz2
@@ -90,8 +91,8 @@ unpack() {
 	done
 }
 
-build() {
-	cd "$builddir"
+prepare() {
+	default_prepare
 
 	# update the config.sub file to detect alpine
 	cp $srcdir/2019-01-05_config.sub common/autoconf/build-aux/autoconf-config.sub
@@ -101,6 +102,10 @@ build() {
 	#
 	# haven't found any way to disable this module so just remove it.
 	rm -r hotspot/src/jdk.hotspot.agent
+}
+
+build() {
+	cd "$builddir"
 
 	if [ $_run_jtreg -ne 0 ]; then
 		_with_jtreg="--with-jtreg=/usr/share/java/jtreg"
@@ -108,6 +113,12 @@ build() {
 		_with_jtreg="--with-jtreg=no"
 	fi
 
+	# CFLAGS, CXXFLAGS and LDFLAGS are ignored as shown by a warning
+	# in the output of ./configure unless used like such:
+	#  --with-extra-cflags="${CFLAGS}"
+	#  --with-extra-cxxflags="${CXXFLAGS}"
+	#  --with-extra-ldflags="${LDFLAGS}"
+	# See also paragraph "Configure Control Variables from "jdk9-${_hg_tag}/common/doc/building.md
 	CFLAGS= CXXFLAGS= LDFLAGS= \
 		bash ./configure \
 		--openjdk-target=$CHOST \
@@ -137,7 +148,7 @@ build() {
 		--with-version-opt=alpine-r${pkgrel} \
 		--with-version-build=${_pkgver#*+}
 
-		MAKEFLAGS= make jdk-image
+	MAKEFLAGS= make jdk-image
 }
 
 check() {
@@ -227,6 +238,32 @@ _dbg() {
 	mv "$_fromroot"/lib/*.debuginfo "$_toroot"/lib
 }
 
+_jre() {
+	pkgdesc="Oracle OpenJDK 9 (JRE)"
+	depends="$pkgname-jre-headless"
+	_fromroot="$pkgdir/$_java_home"
+	_toroot="$subpkgdir/$_java_home"
+
+	mkdir -p "$_toroot/lib"
+	mv "$_fromroot/lib/libawt_xawt.so" \
+		"$_fromroot/lib/libfontmanager.so" \
+		"$_fromroot/lib/libjavajpeg.so" \
+		"$_fromroot/lib/libjawt.so" \
+		"$_fromroot/lib/libjsoundalsa.so" \
+		"$_fromroot/lib/liblcms.so" \
+		"$_fromroot/lib/libsplashscreen.so" \
+		"$_toroot/lib"
+}
+
+
+_src() {
+	pkgdesc="OpenJDK $_majorver Source Bundle"
+	depends="$pkgname-jre-headless"
+	mkdir -p "$subpkgdir/$_java_home"/lib
+	mv "$pkgdir"/$_java_home/lib/src.zip \
+		"$subpkgdir"/$_java_home/lib/
+}
+
 _jre_headless() {
 	pkgdesc="Oracle OpenJDK 9 (JRE headless)"
 	depends="java-common java-cacerts"
@@ -236,18 +273,6 @@ _jre_headless() {
 	mkdir -p "$_toroot"
 	mv "$_fromroot/lib" "$_toroot"
 
-	# move back unwanted libs
-	mkdir -p "$_fromroot/lib"
-	mv "$_toroot/lib/src.zip" \
-		"$_toroot/lib/libawt_xawt.so" \
-		"$_toroot/lib/libfontmanager.so" \
-		"$_toroot/lib/libjavajpeg.so" \
-		"$_toroot/lib/libjawt.so" \
-		"$_toroot/lib/libjsoundalsa.so" \
-		"$_toroot/lib/liblcms.so" \
-		"$_toroot/lib/libsplashscreen.so" \
-		"$_fromroot/lib"
-
 	mkdir -p "$_toroot/bin"
 	for i in appletviewer \
 		idlj \
@@ -281,23 +306,6 @@ _jre_headless() {
 	ln -sf . "$_toroot/jre"
 }
 
-_jre() {
-	pkgdesc="Oracle OpenJDK 9 (JRE)"
-	depends="$pkgname-jre-headless"
-	_fromroot="$pkgdir/$_java_home"
-	_toroot="$subpkgdir/$_java_home"
-
-	mkdir -p "$_toroot/lib"
-	mv "$_fromroot/lib/libawt_xawt.so" \
-		"$_fromroot/lib/libfontmanager.so" \
-		"$_fromroot/lib/libjavajpeg.so" \
-		"$_fromroot/lib/libjawt.so" \
-		"$_fromroot/lib/libjsoundalsa.so" \
-		"$_fromroot/lib/liblcms.so" \
-		"$_fromroot/lib/libsplashscreen.so" \
-		"$_toroot/lib"
-}
-
 _jdk() {
 	pkgdesc="Oracle OpenJDK 9 (JDK)"
 	depends="$pkgname-jre"
@@ -305,7 +313,6 @@ _jdk() {
 	_toroot="$subpkgdir/$_java_home"
 
 	mkdir -p "$_toroot"
-	mv "$_fromroot/lib" "$_toroot"
 	mv "$_fromroot/bin" "$_toroot"
 	mv "$_fromroot/include" "$_toroot"
 }