Use CentOS to compile openjdk and use centos to compile openjdk

Use CentOS to compile openjdk and use centos to compile openjdk

1. Overview

<Deep understanding of Java Virtual Machine-JVM advanced features and Best Practices> Chapter 1 describes how to compile jdk by yourself.

2. compiling environment

VMware12

CentOS-7-x86_64-Everything-1611

3. Software preparation

Bootstrap JDK: jdk-7u79-linux-x64.tar.gz

OpenJDK: https://jdk7.java.net/source.html

4. Compile Dependencies

4.1 install the alsa package

Yum-y install alsa-lib-devel

4.2 install cups-devel

Yum-y install cups-devel

4.3 install lib-related libraries

Yum-y install libX *

4.4 install gcc

Yum-y install gcc-c ++

4.5 install freetype

4.5.1 download http://rpm.pbone.net/index.php3/stat/4/idpl/26641422/dir/centos_7/com/freetype-2.4.11-9.el7.x86_64.rpm.htm

4.5.2 install rpm-ivh freetype-2.4.11-9.el7.x86_64.rpm

4.6 install ant

Yum-y install ant

Note: openjdk will be installed as dependencies. After installation, check whether java-version | ant-version is installed.

& Use ant.tar.gz to decompress the package. Do not install and configure jdk dependencies.

4.7 install libstdc ++

Yum-y install libstdc ++-static

Note: This installation solves compilation errors.ERROR: Cannot chcon libjvm.so

 

5. Configure the environment variable vim/etc/profile

Export CLASSPATH

Export JAVA_HOME

Export LANG = C

Export ALT_BOOTDIR =/usr/java/jdk1.7.0 _ 76

Export ALLOW_DOWNLOADS = true

Export USE_PRECOMPILED_HEADER = true

Export ARCH_DATA_MODEL = 64

Export HOTSPOT_BUILD_JOBS = 4

Export ALT_PARALLEL_COMPILE_JOBS = 4

Export SKIP_DEBUG_BUILD = false

Export SKIP_FASTDEBUG_BUILD = true

Export DEBUG_NAME = debug

Export ALT_OUTPUTDIR =/usr/java/openjdk/build

6. Compile check

Make sanity

If the output result is:Sanity check passed, Indicating that the settings are correct.

7. Execute Compilation

Make

8. Other problems that may occur during compilation

8.1./gamma: relocation error: /usr/java/jdk1.7.0_76/jre/lib/amd64/libjava.so:

Delete all test_gamma files in/usr/java/openjdk/hotspot/make/linux/Makefile
(Vim Makefile->/test_gamma search->: % s/& \. \/test_gamma/g replace all)

8.2 Error: time is more than 10 years from present:

Change all time in the/usr/java/openjdk/jdk/src/share/classes/java/util/CurrencyDate. properties file to recent

Vim command/20 ..-search-> I modify-> esc exit I-> n next position-> I until all changes are completed

8.3 others

Make clean can be compiled

9. Result chart

10. debug jdk

/Usr/java/openjdk/build-debug/the content under the j2sdk-image is the debug jdk

Overwrite the original oracle jdk as the system jdk and configure the environment variable JAVA_HOME CLASSPATH PATH