原本想在 Windows 下编译调试，但过程中遇到了诸多错误（老是报路径错误。。。），最后只好放弃。

此次记录调试的方法为 CentOS7 上编译，Windows 上使用 Clion 远程调试（也可直接在 CentOS7 桌面环境直接调试，速度快）。

一、下载源码（OpenJDK8）

yum 源使用的是阿里的 https://opsx.alibaba.com/mirror?lang=zh-CN

这里使用 mercurial（类似 Git 的版本控制系统） 下载源码，方便更新。

下面网址可以下载 mercurial 较新的版本。

https://mercurial.selenic.com/wiki/ChineseDownload

https://www.mercurial-scm.org/wiki/Download

# 或者 yum install hg -y

yum install mercurial -y

# 下载源码，目标目录需要为空

hg clone http://hg.openjdk.java.net/jdk8u/jdk8u /opt/jdk8u

# 更新代码，操作和 Git 类似

hg pull

# 获取完整源码（需要在源码目录下执行，下载时间较长，一次可能下载不成功，多试几次）

cd /opt/jdk8u/

sh get_source.sh

# 完全下载成功的打印信息。若输出中出现回滚字样，即代表下载过程中出错了，需重新执行下载脚本

No repositories to process.

# Repositories:  . corba jaxp jaxws langtools jdk hotspot nashorn

                    .:   cd . && hg pull -u

                corba:   cd corba && hg pull -u

                 jaxp:   cd jaxp && hg pull -u

                jaxws:   cd jaxws && hg pull -u

            langtools:   cd langtools && hg pull -u

                  jdk:   cd jdk && hg pull -u

              hotspot:   cd hotspot && hg pull -u

              nashorn:   cd nashorn && hg pull -u

                    .:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/

                corba:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/corba

                 jaxp:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/jaxp

                jaxws:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws

                  jdk:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/jdk

            langtools:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/langtools

              hotspot:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot

              nashorn:   正在拉自 http://hg.openjdk.java.net/jdk8u/jdk8u/nashorn

                corba:   正在搜索修改

                corba:   没有发现修改

                  jdk:   正在搜索修改

                  jdk:   没有发现修改

                jaxws:   正在搜索修改

                jaxws:   没有发现修改

                    .:   正在搜索修改

                    .:   没有发现修改

            langtools:   正在搜索修改

            langtools:   没有发现修改

              hotspot:   正在搜索修改

              hotspot:   没有发现修改

                 jaxp:   正在搜索修改

                 jaxp:   没有发现修改

              nashorn:   正在搜索修改

              nashorn:   没有发现修改

这里手动执行多次比较麻烦，自己写了个小脚本，循环执行。

#!/bin/bash

for i in {..}

do

cd /opt/jdk8u/;

sh ./get_source.sh;

done

二、编译源码

Linux 下编译比 Windows 下简单太多。

https://hg.openjdk.java.net/jdk8u/jdk8u/raw-file/tip/README-builds.html

构建 JDK 8 需要使用 Update 7 或更高版本的 JDK 7 版本。JDK 8 开发人员不应使用 JDK 8 作为引导 JDK，以确保 JDK 8 依赖关系不会引入使用 JDK 7 构建的系统部分。

# 查询

yum list installed | grep jdk

rpm -qa | grep jdk

# 卸载

yum remove -y xxxxxxx

# 验证

java -version

# -bash: java: 未找到命令

# 安装 JDK7

# https://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html

tar -zxf jdk-7u80-linux-x64.tar.gz -C /opt/

配置

cd /opt/jdk8u/

chmod +x configure

# 直接执行配置，看看缺少什么工具或参数，按照错误提示安装和添加参数即可

./configure

# 安装编译所需工具包

yum install -y unzip zip libXtst-devel libXt-devel libXrender-devel cups-devel freetype-devel alsa-lib-devel fontconfig-devel

yum groupinstall -y "Development Tools"

# 配置编译环境

./configure --with-boot-jdk=/opt/jdk1..0_80/ --with-debug-level=slowdebug --with-native-debug-symbols=internal

# --with-debug-level=slowdebug 输出更多调试信息

# --with-native-debug-symbols=internal 内链方式生成调试链接符号（可执行文件与源代码的对应关系）

# 生成调试链接符号还有以下方式，相当于 --enable-debug-symbols --disable-zip-debug-info

# ZIP_DEBUGINFO_FILES= 生成调试信息文件 libjvm.debuginfo，否则会被压缩成 libjvm.diz，debug 时只能看到汇编代码，不能跟进源码

# ENABLE_FULL_DEBUG_SYMBOLS= 生成调试符号，可不加，不影响调试

##################################### 配置生产成功打印信息 #################################

A new configuration has been successfully created in

/opt/jdk8u/build/linux-x86_64-normal-server-release

using configure arguments '--with-boot-jdk=/opt/jdk1.7.0_80/ --with-debug-level=slowdebug --with-native-debug-symbols=internal'.

Configuration summary:

* Debug level:    release

* JDK variant:    normal

* JVM variants:   server

* OpenJDK target: OS: linux, CPU architecture: x86, address length: 

Tools summary:

* Boot JDK:       java version "1.7.0_80" Java(TM) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot(TM) -Bit Server VM (build  4.80-b11, mixed mode)  (at /opt/jdk1..0_80)

* Toolchain:      gcc (GNU Compiler Collection)

* C Compiler:     Version 4.8. (at /usr/bin/gcc)

* C++ Compiler:   Version 4.8. (at /usr/bin/g++)

Build performance summary:

* Cores to use:

* Memory limit:    MB

WARNING: The result of this configuration has overridden an older

configuration. You *should* run 'make clean' to make sure you get a

proper build. Failure to do so might result in strange build problems.

configure 帮助文档

Running generated-configure.sh

`configure' configures OpenJDK jdk8 to adapt to many kinds of systems.

Usage: /opt/jdk8u/configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as

VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:

  -h, --help              display this help and exit

      --help=short        display options specific to this package

      --help=recursive    display the short help of all the included packages

  -V, --version           display version information and exit

  -q, --quiet, --silent   do not print `checking ...' messages

      --cache-file=FILE   cache test results in FILE [disabled]

  -C, --config-cache      alias for `--cache-file=config.cache'

  -n, --no-create         do not create output files

      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:

  --prefix=PREFIX         install architecture-independent files in PREFIX [/usr/local]

  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX [PREFIX]

By default, `make install' will install all the files in `/usr/local/bin', `/usr/local/lib' etc.  You can specify an installation prefix other than `/usr/local' using `--prefix', for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:

  --bindir=DIR            user executables [EPREFIX/bin]

  --sbindir=DIR           system admin executables [EPREFIX/sbin]

  --libexecdir=DIR        program executables [EPREFIX/libexec]

  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]

  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]

  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]

  --libdir=DIR            object code libraries [EPREFIX/lib]

  --includedir=DIR        C header files [PREFIX/include]

  --oldincludedir=DIR     C header files for non-gcc [/usr/include]

  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]

  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]

  --infodir=DIR           info documentation [DATAROOTDIR/info]

  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]

  --mandir=DIR            man documentation [DATAROOTDIR/man]

  --docdir=DIR            documentation root [DATAROOTDIR/doc/openjdk]

  --htmldir=DIR           html documentation [DOCDIR]

  --dvidir=DIR            dvi documentation [DOCDIR]

  --pdfdir=DIR            pdf documentation [DOCDIR]

  --psdir=DIR             ps documentation [DOCDIR]

X features:

  --x-includes=DIR    X include files are in DIR

  --x-libraries=DIR   X library files are in DIR

System types:

  --build=BUILD     configure for building on BUILD [guessed]

  --host=HOST       cross-compile to build programs to run on HOST [BUILD]

  --target=TARGET   configure for building compilers for TARGET [HOST]

Optional Features:

  --disable-option-checking  ignore unrecognized --enable/--with options

  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)

  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]

  --enable-openjdk-only   suppress building custom source even if present [disabled]

  --enable-debug          set the debug level to fastdebug (shorthand for --with-debug-level=fastdebug) [disabled]

  --disable-headful       disable building headful support (graphical UI support) [enabled]

  --enable-hotspot-test-in-build

                          run the Queens test after Hotspot build [disabled]

  --enable-unlimited-crypto

                          Enable unlimited crypto policy [disabled]

  --disable-debug-symbols disable generation of debug symbols [enabled]

  --disable-zip-debug-info

                          disable zipping of debug-info files [enabled]

  --enable-macosx-runtime-support

                          Deprecated. Option is kept for backwards compatibility and is ignored

  --disable-freetype-bundling

                          disable bundling of the freetype library with the build result [enabled on Windows or when using --with-freetype, disabled otherwise]

  --enable-sjavac         use sjavac to do fast incremental compiles [disabled]

  --disable-precompiled-headers

                          disable using precompiled headers when compiling C++ [enabled]

  --enable-ccache         enable using ccache to speed up recompilations [disabled]

Optional Packages:

  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]

  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)

  --with-custom-make-dir  use this directory for custom build/make files

  --with-target-bits      build 32-bit or 64-bit binaries (for platforms that support it), e.g. --with-target-bits=32 [guessed]

  --with-jdk-variant      JDK variant to build (normal) [normal]

  --with-jvm-interpreter  JVM interpreter to build (template, cpp) [template]

  --with-jvm-variants     JVM variants (separated by commas) to build (server, client, minimal1, kernel, zero, zeroshark, core) [server]

  --with-debug-level      set the debug level (release, fastdebug, slowdebug) [release]

  --with-devkit           use this devkit for compilers, tools and resources

  --with-sys-root         alias for --with-sysroot for backwards compatability

  --with-sysroot          use this directory as sysroot)

  --with-tools-dir        alias for --with-toolchain-path for backwards compatibility

  --with-toolchain-path   prepend these directories when searching for toolchain binaries (compilers etc)

  --with-extra-path       prepend these directories to the default path

  --with-xcode-path       explicit path to Xcode 4 (generally for building on 10.9 and later)

  --with-conf-name        use this as the name of the configuration [generated from important configuration options]

  --with-builddeps-conf   use this configuration file for the builddeps

  --with-builddeps-server download and use build dependencies from this server url

  --with-builddeps-dir    store downloaded build dependencies here [/localhome/builddeps]

  --with-builddeps-group  chgrp the downloaded build dependencies to this group

  --with-cacerts-file     specify alternative cacerts file

  --with-milestone        Set milestone value for build [internal]

  --with-update-version   Set update version value for build [b00]

  --with-user-release-suffix

                          Add a custom string to the version string if build number isn't set.[username_builddateb00]

  --with-build-number     Set build number value for build [b00]

  --with-vendor-name      Set vendor name. Among others, used to set the 'java.vendor' and 'java.vm.vendor' system properties. [not specified]

  --with-vendor-url       Set the 'java.vendor.url' system property [not specified]

  --with-vendor-bug-url   Set the 'java.vendor.url.bug' system property [not specified]

  --with-vendor-vm-bug-url

                          Sets the bug URL which will be displayed when the VM crashes [not specified]

  --with-copyright-year   Set copyright year value for build [current year]

  --with-boot-jdk         path to Boot JDK (used to bootstrap build) [probed]

  --with-boot-jdk-jvmargs specify JVM arguments to be passed to all invocations of the Boot JDK, overriding the default values, e.g --with-boot-jdk-jvmargs="-Xmx8G -enableassertions"

  --with-add-source-root  for each and every source directory, look in this additional source root for the same directory; if it exists and have files in it, include it in the build

  --with-override-source-root

                          for each and every source directory, look in this override source root for the same directory; if it exists, use that directory instead and ignore the directory in the original source root

  --with-adds-and-overrides

                          use the subdirs 'adds' and 'overrides' in the specified directory as add-source-root and override-source-root

  --with-override-langtools

                          use this langtools dir for the build

  --with-override-corba   use this corba dir for the build

  --with-override-jaxp    use this jaxp dir for the build

  --with-override-jaxws   use this jaxws dir for the build

  --with-override-hotspot use this hotspot dir for the build

  --with-override-nashorn use this nashorn dir for the build

  --with-override-jdk     use this jdk dir for the build

  --with-import-hotspot   import hotspot binaries from this jdk image or hotspot build dist dir instead of building from source

  --with-toolchain-type   the toolchain type (or family) to use, use '--help' to show possible values [platform dependent]

  --with-toolchain-version

                          the version of the toolchain to look for, use '--help' to show possible values [platform dependent]

  --with-jtreg            Regression Test Harness [probed]

  --with-extra-cflags     extra flags to be used when compiling jdk c-files

  --with-extra-cxxflags   extra flags to be used when compiling jdk c++-files

  --with-extra-ldflags    extra flags to be used when linking jdk

  --with-native-debug-symbols

                          set the native debug symbol configuration (none, internal, external, zipped) [varying]

  --with-x                use the X Window System

  --with-cups             specify prefix directory for the cups package (expecting the headers under PATH/include)

  --with-cups-include     specify directory for the cups include files

  --with-freetype         specify prefix directory for the freetype package (expecting the libraries under PATH/lib and the headers under PATH/include)

  --with-freetype-include specify directory for the freetype include files

  --with-freetype-lib     specify directory for the freetype library

  --with-freetype-src     specify directory with freetype sources to automatically build the library (experimental, Windows-only)

  --with-alsa             specify prefix directory for the alsa package (expecting the libraries under PATH/lib and the headers under PATH/include)

  --with-alsa-include     specify directory for the alsa include files

  --with-alsa-lib         specify directory for the alsa library

  --with-fontconfig       specify prefix directory for the fontconfig package (expecting the headers under PATH/include)

  --with-fontconfig-include

                          specify directory for the fontconfig include files

  --with-giflib           use giflib from build system or OpenJDK source (system, bundled) [bundled]

  --with-zlib             use zlib from build system or OpenJDK source (system, bundled) [bundled]

  --with-stdc++lib=<static>,<dynamic>,<default>

                          force linking of the C++ runtime on Linux to either static or dynamic, default is static with dynamic as fallback

  --with-msvcr-dll        path to microsoft C runtime dll (msvcr*.dll) (Windows only) [probed]

  --with-msvcp-dll        path to microsoft C++ runtime dll (msvcp*.dll) (Windows only) [probed]

  --with-ucrt-dll-dir     path to Microsoft Windows Kit UCRT DLL dir (Windows only) [probed]

  --with-dxsdk            Deprecated. Option is kept for backwards compatibility and is ignored

  --with-dxsdk-lib        Deprecated. Option is kept for backwards compatibility and is ignored

  --with-dxsdk-include    Deprecated. Option is kept for backwards compatibility and is ignored

  --with-num-cores        number of cores in the build system, e.g. --with-num-cores=8 [probed]

  --with-memory-size      memory (in MB) available in the build system, e.g. --with-memory-size=1024 [probed]

  --with-jobs             number of parallel jobs to let make run [calculated based on cores and memory]

  --with-sjavac-server-java

                          use this java binary for running the sjavac background server [Boot JDK java]

  --with-ccache-dir       where to store ccache files [~/.ccache]

Some influential environment variables:

  BASENAME    Override default value for BASENAME

  BASH        Override default value for BASH

  CAT         Override default value for CAT

  CHMOD       Override default value for CHMOD

  CMP         Override default value for CMP

  COMM        Override default value for COMM

  CP          Override default value for CP

  CUT         Override default value for CUT

  DATE        Override default value for DATE

  DIFF        Override default value for DIFF

  DIRNAME     Override default value for DIRNAME

  ECHO        Override default value for ECHO

  EXPR        Override default value for EXPR

  FILE        Override default value for FILE

  FIND        Override default value for FIND

  HEAD        Override default value for HEAD

  LN          Override default value for LN

  LS          Override default value for LS

  MKDIR       Override default value for MKDIR

  MKTEMP      Override default value for MKTEMP

  MV          Override default value for MV

  NAWK        Override default value for NAWK

  PRINTF      Override default value for PRINTF

  RM          Override default value for RM

  SH          Override default value for SH

  SORT        Override default value for SORT

  TAIL        Override default value for TAIL

  TAR         Override default value for TAR

  TEE         Override default value for TEE

  TOUCH       Override default value for TOUCH

  TR          Override default value for TR

  UNAME       Override default value for UNAME

  UNIQ        Override default value for UNIQ

  WC          Override default value for WC

  WHICH       Override default value for WHICH

  XARGS       Override default value for XARGS

  AWK         Override default value for AWK

  GREP        Override default value for GREP

  EGREP       Override default value for EGREP

  FGREP       Override default value for FGREP

  SED         Override default value for SED

  CYGPATH     Override default value for CYGPATH

  READLINK    Override default value for READLINK

  DF          Override default value for DF

  SETFILE     Override default value for SETFILE

  CPIO        Override default value for CPIO

  UNZIP       Override default value for UNZIP

  ZIP         Override default value for ZIP

  LDD         Override default value for LDD

  READELF     Override default value for READELF

  HG          Override default value for HG

  STAT        Override default value for STAT

  TIME        Override default value for TIME

  DSYMUTIL    Override default value for DSYMUTIL

  XATTR       Override default value for XATTR

  CODESIGN    Override default value for CODESIGN

  PKG_CONFIG  path to pkg-config utility

  CC          C compiler command

  CFLAGS      C compiler flags

  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a

              nonstandard directory <lib dir>

  LIBS        libraries to pass to the linker, e.g. -l<library>

  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if

              you have headers in a nonstandard directory <include dir>

  CXX         C++ compiler command

  CXXFLAGS    C++ compiler flags

  CPP         C preprocessor

  CXXCPP      C++ preprocessor

  AS          Override default value for AS

  AR          Override default value for AR

  OBJC        Objective C compiler command

  OBJCFLAGS   Objective C compiler flags

  LIPO        Override default value for LIPO

  STRIP       Override default value for STRIP

  NM          Override default value for NM

  GNM         Override default value for GNM

  MCS         Override default value for MCS

  OBJCOPY     Override default value for OBJCOPY

  OBJDUMP     Override default value for OBJDUMP

  BUILD_CC    Override default value for BUILD_CC

  BUILD_CXX   Override default value for BUILD_CXX

  BUILD_LD    Override default value for BUILD_LD

  JTREGEXE    Override default value for JTREGEXE

  XMKMF       Path to xmkmf, Makefile generator for X Window System

  FREETYPE_CFLAGS

              C compiler flags for FREETYPE, overriding pkg-config

  FREETYPE_LIBS

              linker flags for FREETYPE, overriding pkg-config

  ALSA_CFLAGS C compiler flags for ALSA, overriding pkg-config

  ALSA_LIBS   linker flags for ALSA, overriding pkg-config

  LIBFFI_CFLAGS

              C compiler flags for LIBFFI, overriding pkg-config

  LIBFFI_LIBS linker flags for LIBFFI, overriding pkg-config

  CCACHE      Override default value for CCACHE

Use these variables to override the choices made by `configure' or to help

it to find libraries and programs with nonstandard names/locations.

Report bugs to <build-dev@openjdk.java.net>.

OpenJDK home page: <http://openjdk.java.net>.

Additional (non-autoconf) OpenJDK Options:

  --openjdk-target=TARGET cross-compile with TARGET as target platform (i.e. the one you will run the resulting binary on).

                          Equivalent to --host=TARGET --target=TARGET --build=<current platform>

  --debug-configure       Run the configure script with additional debug logging enabled.

The following toolchains are available as arguments to --with-toolchain-type.

Which are valid to use depends on the build platform.

  gcc         GNU Compiler Collection

  clang       clang/LLVM

  solstudio   Oracle Solaris Studio

  xlc         IBM XL C/C++

  microsoft   Microsoft Visual Studio

Please be aware that, when cross-compiling, the OpenJDK configure script will

generally use 'target' where autoconf traditionally uses 'host'.

Also note that variables must be passed on the command line. Variables in the

environment will generally be ignored, unlike traditional autoconf scripts.

编译

make images JOBS=

# 编译成功打印信息

----- Build times -------

Start -- ::

End   -- ::

:: corba

:: demos

:: docs

:: hotspot

:: images

:: jaxp

:: jaxws

:: jdk

:: langtools

:: nashorn

:: TOTAL

-------------------------

Finished building OpenJDK for target 'all'

# 测试

 ./build/linux-x86_64-normal-server-release/jdk/bin/java -version

# openjdk version "1.8.0-internal"

# OpenJDK Runtime Environment (build 1.8.-internal-root_2019_06_27_00_56-b00)

# OpenJDK -Bit Server VM (build 25.71-b00, mixed mode)

# 查看 libjvm.debuginfo

ls ./build/linux-x86_64-normal-server-release/jdk/lib/amd64/server/

# 若编译时没有设置生成，可进入该目录（libjvm.so 所在目录）手动解压

unzip libjvm.diz

make 帮助文档

OpenJDK Makefile help

=====================

Common make targets

.  make [default]         # Compile all product in langtools, hotspot, jaxp, jaxws, corba and jdk

.  make all               # Compile everything, all repos and images

.  make images            # Create complete j2sdk and j2re images

.  make docs              # Create javadocs

.  make overlay-images    # Create limited images for sparc 64 bit platforms

.  make profiles          # Create complete j2re compact profile images

.  make bootcycle-images  # Build images twice, second time with newly build JDK

.  make install           # Install the generated images locally

.  make clean             # Remove all files generated by make, but not those generated by configure

.  make dist-clean        # Remove all files, including configuration

.  make help              # Give some help on using make

.  make test              # Run tests, default is all tests (see TEST below)

Targets for specific components

(Component is any of langtools, corba, jaxp, jaxws, hotspot, jdk, nashorn, images, overlay-images, docs or test)

.  make <component>       # Build <component> and everything it depends on.

.  make <component>-only  # Build <component> only, without dependencies. This is faster but can result in incorrect build results!

.  make clean-<component> # Remove files generated by make for <component>

Useful make variables

.  make CONF=             # Build all configurations (note, assignment is empty)

.  make CONF=<substring>  # Build the configuration(s) with a name matching <substring>

.  make LOG=<loglevel>    # Change the log level from warn to <loglevel> Available log levels are: 'warn' (default), 'info', 'debug' and 'trace' To see executed command lines, use LOG=debug

.  make JOBS=<n>          # Run <n> parallel make jobs Note that -jN does not work as expected!

.  make test TEST=<test>  # Only run the given test or tests, e.g. make test TEST="jdk_lang jdk_net"

三、Windows 远程调试

CentOS7 端

yum remove -y cmake gdb

yum install -y gcc gcc-c++ make wget

# 安装 cmake，yum 源安装的版本较低

cd /opt/

wget https://cmake.org/files/v3.14/cmake-3.14.5.tar.gz

tar -zxf cmake-3.14..tar.gz

cd cmake-3.14.

# 默认安装在 /usr/local/share/，可执行文件在 /usr/local/bin/

./bootstrap && make && make install

ln -s /usr/local/bin/cmake /usr/bin/cmake

cmake -version

# 安装 gdb

# 这里可以找到 gdb 镜像站点 https://www.gnu.org/software/gdb/download/

# 这里下载 texinfo 新版本 http://ftp.gnu.org/gnu/texinfo/

yum install -y texinfo

cd /opt/

wget https://mirrors.ustc.edu.cn/gnu/gdb/gdb-8.2.1.tar.gz

tar -zxf gdb-8.2..tar.gz

cd gdb-8.2.

# 之前若出现过编译错误需要删掉（有缓存），重新解压编译

# 默认安装在 /usr/local/share/，可执行文件在 /usr/local/bin/

./configure && make && make install

ln -s /usr/local/bin/gdb /usr/bin/gdb

gdb -ver

Windows 端

首先用 Clion 新建一个空项目

远程调试

同步代码（windows 上的代码需要和 CentOS 上的代码一样）

连接信息

对应目录，本地目录为新建的 Hello World 项目路径

同步时要排除的本地目录

下载远程代码

关闭项目，用载入的方式重新打开项目

设置远程调试，地址为 CentOS 地址，端口随意

在 CentOS 上启动 GDB，端口与上面对应

yum install gdb-gdbserver -y

gdbserver : /opt/jdk8u/build/linux-x86_64-normal-server-release/jdk/bin/java -version

打上断点，启动的 DeBug（比较慢，载入 libjvm.debuginfo 的时候）

四、CentOS 桌面本地调试

只调试 JVM 可以直接导入 hotspot 项目，速度快点

配置调试

忽略调试时的 SIGSEGV 信号，在用户目录新建 .gdbinit 文件

handle SIGSEGV pass noprint nostop

https://blog.csdn.net/tjiyu/article/details/53725247

https://my.oschina.net/u/3982963/blog/3045233

https://www.jianshu.com/p/ee7e9176632c

https://yddmax.github.io/2017/06/11/openjdk7%E4%B9%8B%E7%BC%96%E8%AF%91%E5%92%8Cdebug/

https://blog.csdn.net/lihao21/article/details/87425187

https://jiges.github.io/2017/11/10/win10%E5%88%A9%E7%94%A8Netbeans%E8%BF%9C%E7%A8%8B%E6%9E%84%E5%BB%BA%E8%B0%83%E8%AF%95OpenJDK/

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