深夜里安静的编译一个OpenJDK8，坑太多

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Mac系统安装

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利用brew search查找mercurial
➜  ~  brew search mercurial
安装
➜  ~  brew install mercuria

Linux系统安装

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sudo apt install mercurial

安装openjdk8

添加代理

一般在下载代码的时候都会很慢，故先配置好代理。我这里是V2Ray。

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vim /usr/local/etc/mercurial/hgrc

[http_proxy]
host=127.0.0.1:8001
[https_proxy]
host=127.0.0.1:8001
下载jdk8u的代码
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hg clone https://hg.openjdk.java.net/jdk8u/jdk8u openjdk8
chmod u+x get_source.sh
chmod u+x configure
./get_source.sh  # 下载全部源代码  
./configure  --with-freetype-include=/usr/local/include/freetype2 --with-freetype-lib=/usr/local/lib/      # configure 编译环境，若编译报错，需要添加 `--disable-warnings-as-errors`
make all

漫长的等待，终于等到你

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## Finished docs (build time 00:01:52)

----- Build times -------
Start 2020-05-24 03:18:37
End   2020-05-24 03:30:07
00:00:19 corba
00:00:46 demos
00:01:52 docs
00:02:53 hotspot
00:01:28 images
00:00:12 jaxp
00:00:18 jaxws
00:03:07 jdk
00:00:26 langtools
00:00:09 nashorn
00:11:30 TOTAL
-------------------------
Finished building OpenJDK for target 'all'

http://static.cyblogs.com/QQ20200524-035223@2x.jpg

如何在CLion里面做调试，后面我再详细的写一篇。敬请期待~

遇到的坑

问题一：Xcode 4 is required to build JDK 8
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configure: error: Xcode 4 is required to build JDK 8, the version found was 11.4.1. Use --with-xcode-path to specify the location of Xcode 4 or make Xcode 4 active by using xcode-select.
configure exiting with result code 1

解决方案：

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➜  openjdk8  vim common/autoconf/generated-configure.sh
# Fail-fast: verify we're building on Xcode 4, we cannot build with Xcode 5 or later
#XCODE_VERSION=`$XCODEBUILD -version | grep '^Xcode ' | sed 's/Xcode //'`
#XC_VERSION_PARTS=( ${XCODE_VERSION//./ } )
#if test ! "${XC_VERSION_PARTS[0]}" = "4"; then
#  as_fn_error $? "Xcode 4 is required to build JDK 8, the version found was $XCODE_VERSION. Use --with-xcode-path to specify the l      ocation of Xcode 4 or make Xcode 4 active by using xcode-select." "$LINENO" 5
#fi
问题二：A gcc compiler is required
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configure: error: A gcc compiler is required. Try setting --with-tools-dir.
configure exiting with result code


# 第一处代码 elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
    # gcc --version output typically looks like
    #     gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
    #     Copyright (C) 2013 Free Software Foundation, Inc.
    #     This is free software; see the source for copying conditions.  There is NO
    #     warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
    # Check that this is likely to be GCC.
    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Free Software Foundation" > /dev/null
# 条件语句注释掉
#     if test $? -ne 0; then
#       { $as_echo "$as_me:${as_lineno-$LINENO}: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&5
# $as_echo "$as_me: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&6;}
#       { $as_echo "$as_me:${as_lineno-$LINENO}: The result from running with --version was: \"$COMPILER_VERSION\"" >&5
# $as_echo "$as_me: The result from running with --version was: \"$COMPILER_VERSION\"" >&6;}
#       as_fn_error $? "A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir." "$LINENO" 5
#     fi

# 第二处代码，
  elif test  "x$TOOLCHAIN_TYPE" = xgcc; then
    # gcc --version output typically looks like
    #     gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
    #     Copyright (C) 2013 Free Software Foundation, Inc.
    #     This is free software; see the source for copying conditions.  There is NO
    #     warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    COMPILER_VERSION_OUTPUT=`$COMPILER --version 2>&1`
    # Check that this is likely to be GCC.
    $ECHO "$COMPILER_VERSION_OUTPUT" | $GREP "Free Software Foundation" > /dev/null
# 条件语句注释掉
#     if test $? -ne 0; then
#       { $as_echo "$as_me:${as_lineno-$LINENO}: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&5
# $as_echo "$as_me: The $COMPILER_NAME compiler (located as $COMPILER) does not seem to be the required $TOOLCHAIN_TYPE compiler." >&6;}
#       { $as_echo "$as_me:${as_lineno-$LINENO}: The result from running with --version was: \"$COMPILER_VERSION\"" >&5
# $as_echo "$as_me: The result from running with --version was: \"$COMPILER_VERSION\"" >&6;}
#       as_fn_error $? "A $TOOLCHAIN_TYPE compiler is required. Try setting --with-tools-dir." "$LINENO" 5

最后执行sh configure终于成功： 

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====================================================
A new configuration has been successfully created in
/Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release
using default settings.

Configuration summary:
* Debug level:    release
* JDK variant:    normal
* JVM variants:   server
* OpenJDK target: OS: macosx, CPU architecture: x86, address length: 64

Tools summary:
* Boot JDK:       java version "1.8.0_162" Java(TM) SE Runtime Environment (build 1.8.0_162-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)  (at /Library/Java/JavaVirtualMachines/jdk1.8.0_162.jdk/Contents/Home)
* Toolchain:      gcc (GNU Compiler Collection)
* C Compiler:     Version 11.0.3 (at /usr/bin/gcc)
* C++ Compiler:   Version 11.0.3 (at /usr/bin/g++)

Build performance summary:
* Cores to use:   4
* Memory limit:   16384 MB
问题三：include path for libstdc++ headers not found
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clang: clangerror: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Werror,-Wstdlibcxx-not-found]
: error: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Werror,-Wstdlibcxx-not-found]
make[6]: *** [../generated/adfiles/archDesc.o] Error 1
make[6]: *** Waiting for unfinished jobs....
make[6]: *** [../generated/adfiles/adlparse.o] Error 1
clang: error: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Werror,-Wstdlibcxx-not-found]
make[6]: *** [../generated/adfiles/arena.o] Error 1
make[5]: *** [ad_stuff] Error 2
make[4]: *** [product] Error 2
make[3]: *** [generic_build2] Error 2
make[2]: *** [product] Error 2
make[1]: *** [/Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/hotspot/_hotspot.timestamp] Error 2
make: *** [hotspot-only] Error 2

解决方法

原因：这个原因是Xcode升级到10以后就没有包含lstdc++库了。而 hotspot 居然还一直用着这个，于是编译器找不到 libstdc++ 的头文件就罢工了
解决办法：
打开:https://github.com/imkiwa/xcode-missing-libstdc- , clone 到本地，参考 install.sh 将文件链接或者复制到对应位置（慎重直接执行，请一定事先核对路径是否正确)！

问题四：fatal error: ‘iostream’ file not found
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/Users/chenyuan/Workspaces/Openjdk/openjdk8/hotspot/src/share/vm/adlc/archDesc.cpp:#include <iostream>/Users/chenyuan/Workspaces/Openjdk/openjdk8/hotspot/src/share/vm/adlc/adlc.hpp
:         ^~~~~~~~~~35:10:27
:
 fatal error/Users/chenyuan/Workspaces/Openjdk/openjdk8/hotspot/src/share/vm/adlc/adlc.hpp: :35'iostream' file not found:
10: fatal error: 'iostream' file not found
#include <iostream>
         ^~~~~~~~~~
#include <iostream>
         ^~~~~~~~~~
In file included from /Users/chenyuan/Workspaces/Openjdk/openjdk8/hotspot/src/share/vm/adlc/adlparse.cpp:27:
/Users/chenyuan/Workspaces/Openjdk/openjdk8/hotspot/src/share/vm/adlc/adlc.hpp:35:10: fatal error: 'iostream' file not found
#include <iostream>
         ^~~~~~~~~~
1 error generated.
make[6]: *** [../generated/adfiles/arena.o] Error 1
make[6]: *** Waiting for unfinished jobs....

解决方案

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xcode-select --install
问题五：unknown argument: ‘-fpch-deps’

解决方案：

hotspot/make/bsd/makefiles/gcc.make

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# Compiler warnings are treated as errors
ifneq ($(COMPILER_WARNINGS_FATAL),false)
  WARNINGS_ARE_ERRORS = -Werror
endif

这一段也要干掉，否则在后续编译中可能会出现clang: error: unknown argument: '-fpch-deps'

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ifeq ($(USE_CLANG),)
  ifneq ($(CC_VER_MAJOR), 2)
    DEPFLAGS += -fpch-deps
  endif
endif
问题六：invalid argument ‘-std=gnu++98’ not allowed with ‘C’
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Making signal interposition lib...
error: invalid argument '-std=gnu++98' not allowed with 'C'
make[6]: *** [libjsig.dylib] Error 1

解决方案

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if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
    if test "x$OPENJDK_TARGET_CPU_ARCH" = "xsparc"; then
      CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
      CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -xregs=no%appl"
    fi
  elif test "x$TOOLCHAIN_TYPE" = xxlc; then
    LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
    CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
    CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
  elif test "x$TOOLCHAIN_TYPE" = xgcc; then
    LEGACY_EXTRA_CFLAGS="$LEGACY_EXTRA_CFLAGS -fstack-protector"
    LEGACY_EXTRA_CXXFLAGS="$LEGACY_EXTRA_CXXFLAGS -fstack-protector"
    if test "x$OPENJDK_TARGET_OS" != xmacosx; then
      LDFLAGS_JDK="$LDFLAGS_JDK -Wl,-z,relro"
      LEGACY_EXTRA_LDFLAGS="$LEGACY_EXTRA_LDFLAGS -Wl,-z,relro"
    fi
#    CXXSTD_CXXFLAG="-std=gnu++98" # 注释掉这行

参考地址