Building the JDK

not

<path to Cygwin setup>/setup-x86_64 -q -P autoconf -P make -P unzip -P zip
sudo apt-get install build-essential
sudo yum groupinstall "Development Tools"
sudo apk add build-base bash grep zip
xcode-select --install
AUTOCONF=<path to autoconf> configure ...
bash configure [options]
bash configure --with-freetype=/cygdrive/c/freetype-i586 --with-target-bits=32
bash configure --enable-debug --with-jvm-variants=server --enable-dtrace
bash configure --help
make run-test-tier1
bash configure --with-devkit=<devkit-path> --openjdk-target=ppc64-linux-gnu && make
make [ TARGETS="<TARGET_TRIPLET>+" ] [ BASE_OS=<OS> ] [ BASE_OS_VERSION=<VER> ]
cd make/devkit
make TARGETS="ppc64le-linux-gnu aarch64-linux-gnu" BASE_OS=Fedora BASE_OS_VERSION=21
ls -1 ../../build/devkit/result/
x86_64-linux-gnu-to-aarch64-linux-gnu
x86_64-linux-gnu-to-ppc64le-linux-gnu
cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc
dpkg-deb -x /tmp/libasound2_1.0.25-4_armhf.deb .
dpkg-deb -x /tmp/libasound2-dev_1.0.25-4_armhf.deb .
cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc/usr
mkdir X11R6
cd X11R6
for deb in /tmp/target-x11/*.deb ; do dpkg-deb -x $deb . ; done
mv usr/* .
cd lib
cp arm-linux-gnueabihf/* .
cp: cannot stat `arm-linux-gnueabihf/libICE.so': No such file or directory
cp: cannot stat `arm-linux-gnueabihf/libSM.so': No such file or directory
cp: cannot stat `arm-linux-gnueabihf/libXt.so': No such file or directory
apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu
sudo qemu-debootstrap \
  --arch=arm64 \
  --verbose \
  --include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
  --resolve-deps \
  buster \
  ~/sysroot-arm64 \
  http://httpredir.debian.org/debian/
sudo chroot ~/sysroot-arm64 symlinks -cr .
sh ./configure \
  --openjdk-target=aarch64-linux-gnu \
  --with-sysroot=~/sysroot-arm64
make images
ls build/linux-aarch64-server-release/
sh ./configure --with-jvm-variants=server \
--with-boot-jdk=$BOOT_JDK \
--with-build-jdk=$BUILD_JDK \
--openjdk-target=x86_64-unknown-linux-musl \
--with-devkit=$DEVKIT \
--with-sysroot=$SYSROOT
ERROR: Build failed for target 'hotspot' in configuration 'linux-x64' (exit code 2)

=== Output from failing command(s) repeated here ===
* For target hotspot_variant-server_libjvm_objs_psMemoryPool.o:
/localhome/git/jdk-sandbox/hotspot/src/share/vm/services/psMemoryPool.cpp:1:1: error: 'failhere' does not name a type
   ... (rest of output omitted)

* All command lines available in /localhome/git/jdk-sandbox/build/linux-x64/make-support/failure-logs.
=== End of repeated output ===

=== Make failed targets repeated here ===
lib/CompileJvm.gmk:207: recipe for target '/localhome/git/jdk-sandbox/build/linux-x64/hotspot/variant-server/libjvm/objs/psMemoryPool.o' failed
make/Main.gmk:263: recipe for target 'hotspot-server-libs' failed
=== End of repeated output ===

Hint: Try searching the build log for the name of the first failed target.
Hint: If caused by a warning, try configure --disable-warnings-as-errors.
make print-configuration > current-configuration
make dist-clean
bash configure $(cat current-configuration)
make
File 'xxx' has modification time in the future.
Clock skew detected. Your build may be incomplete.
fatal error - couldn't allocate heap
cannot create ... Permission denied
spawn failed
cat << EOT > /tmp/configure
#!/bin/bash
if [ \$(pwd) = \$(cd \$(dirname \$0); pwd) ] ; then
  echo >&2 "Abort: Trying to call configure helper recursively"
  exit 1
fi

bash \$PWD/configure "\$@"
EOT
chmod +x /tmp/configure
sudo mv /tmp/configure /usr/local/bin
buildtools/
configure-support/
hotspot/
images/
jdk/
make-support/
support/
test-results/
test-support/
$(eval $(call SetupJavaCompilation, BUILD_FOO_CLASSES, \
    SETUP := GENERATE_OLDBYTECODE, \
    SRC := $(TOPDIR)/src/jkd.foo/share/classes, \
    INCLUDES := jdk/internal/foo, \
    BIN := $(SUPPORT_OUTPUTDIR)/foo_classes, \
))
make COMPARE_BUILD=CONF=--enable-new-hotspot-feature:MAKE=hotspot

Operating system	Vendor/version used
Linux	Oracle Enterprise Linux 6.4 / 7.6
macOS	Mac OS X 10.13 (High Sierra)
Windows	Windows Server 2012 R2

Operating system	Supported toolchain
Linux	gcc, clang
macOS	Apple Xcode (using clang)
AIX	IBM XL C/C++
Windows	Microsoft Visual Studio

Operating system	Toolchain version
Linux	gcc 10.2.0
macOS	Apple Xcode 10.1 (using clang 10.0.0)
Windows	Microsoft Visual Studio 2019 update 16.7.2

Target	Debian tree	Debian arch	`--openjdk-target=...`	`--with-jvm-variants=...`
x86	buster	i386	i386-linux-gnu	(all)
arm	buster	armhf	arm-linux-gnueabihf	(all)
aarch64	buster	arm64	aarch64-linux-gnu	(all)
ppc64le	buster	ppc64el	powerpc64le-linux-gnu	(all)
s390x	buster	s390x	s390x-linux-gnu	(all)
mipsle	buster	mipsel	mipsel-linux-gnu	zero
mips64le	buster	mips64el	mips64el-linux-gnueabi64	zero
armel	buster	arm	arm-linux-gnueabi	zero
ppc	sid	powerpc	powerpc-linux-gnu	zero
ppc64be	sid	ppc64	powerpc64-linux-gnu	(all)
m68k	sid	m68k	m68k-linux-gnu	zero
alpha	sid	alpha	alpha-linux-gnu	zero
sh4	sid	sh4	sh4-linux-gnu	zero

TL;DR (Instructions for the Impatient)

Introduction

Getting the Source Code

Special Considerations

Build Hardware Requirements

Building on x86

Building on aarch64

Building on 32-bit arm

Operating System Requirements

Windows

Cygwin

Windows Subsystem for Linux (WSL)

macOS

Linux

AIX

Native Compiler (Toolchain) Requirements

gcc

clang

Apple Xcode

Microsoft Visual Studio

IBM XL C/C++

Boot JDK Requirements

Getting JDK binaries

External Library Requirements

FreeType

CUPS

X11

ALSA

libffi

Build Tools Requirements

Autoconf

GNU Make

GNU Bash

Running Configure

Common Configure Arguments

Configure Arguments for Tailoring the Build

Configure Arguments for Native Compilation

Configure Arguments for External Dependencies

Configure Control Variables

Running Make

Common Make Targets

Make Control Variables

General Make Control Variables

Test Make Control Variables

Advanced Make Control Variables

Running Tests

Cross-compiling

Cross compiling the easy way with OpenJDK devkits

Boot JDK and Build JDK

Specifying the Target Platform

Toolchain Considerations

Native Libraries

ALSA

X11

Cross compiling with Debian sysroots

Building for ARM/aarch64

Building for musl

Verifying the Build

Build Performance

Disk Speed

Virus Checking

Ccache

Precompiled Headers

Icecc / icecream

Using sjavac

Building the Right Target

Troubleshooting

Locating the Source of the Error

Build Failure Summary

Checking the Build Log File

Fixing Unexpected Build Failures

Problems with the Build Environment

Problems with Incremental Rebuilds

Specific Build Issues

Clock Skew

Out of Memory Errors

Spaces in Path

Getting Help

Hints and Suggestions for Advanced Users

Bash Completion