學習《深入了解java虛擬機》，按照書上的步驟試著自己編譯了個jdk，耗時大半個下午，中間遇到不少問題，在這記錄下。

一、環境說明

linux 版本

[[email protected] openjdk_compile]# lsb_release -a
LSB Version::base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID:CentOS
Description:CentOS release 6.9 (Final)
Release:6.9
Codename:Final

openjdk版本

openjdk-7u75-src-b13-18_dec_2014.zip

二、構建編譯環境

安裝必要工具包

[[email protected] openjdk_compile]# yum groupinstall "Development Tools"

[[email protected] openjdk_compile]# yum install ant

設置環境變量

unset JAVA_HOME
unset CLASSPATH
export LANG=C
export ALT_BOOTDIR=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.el7_3.x86_64
#允許自動下載依賴
export ALLOW_DOWNLOADS=true
#並行編譯的線程數，設置為和cpu內核數量一致即可
export HOTSPOT_BUILD_JOBS=2
export ALT_PARALLEL_COMPIL_JOBS=2
#比較本次build出來的映像與先前版本的差異。這對我們來說沒有意義
#必須設置為false，否則sanity檢查會報缺少先前版本的JDK的映像的錯誤提示。
#如果已經設置dev或者DEV_ONLY=true,這個不顯示設置也行
export SKIP_COMPARE_IMAGES=true
#使用預編譯頭文件，不加這個編譯會更慢一些
export USE_PRECOMPILED_HEADER=true
#要編譯的內容
export BUILD_LANGTOOLS=true
#export BUILD_JAXP=false
#export BUILD_JAXWS=false
#export BUILD_CORBA=false
export BUILD_HOTSPOT=true
export BUILD_JDK=true
#要編譯的版本
#export SKIP_DEBUG_BUILD=false
#export SKIP_FASTDEBUG_BUILD=true
#export DEBUG_NAME=debug
#把它設置為false，可以避開javaws和瀏覽器java插件之類的部分的build
export BUILD_DEPLOY=false
#把它設置為false就不會build出安裝包。因為安裝包有些奇怪的依賴
#但即便不build出安裝包也能得到完整的JDK映像，所以還是別build好了
export BUILD_INSTALL=false
#編譯結果存放的路勁
export ALT_OUTPUTDIR=/root/openjdk_compile/build

切換到源代碼根路徑，執行make sanity，得到結果：

WARNING: LANG has been set to zh_CN.UTF-8, this can cause build failures. 
         Try setting LANG to ‘C‘. 
 
ERROR: Your CLASSPATH environment variable is set.  This will 
       most likely cause the build to fail.  Please unset it 
       and start your build again. 
 
ERROR: Your JAVA_HOME environment variable is set.  This will 
       most likely cause the build to fail.  Please unset it 
       and start your build again. 
 
ERROR: You seem to not have installed ALSA 0.9.1 or higher. 
       Please install ALSA (drivers and lib). You can download the 
       source distribution from http://www.alsa-project.org or go to 
       http://www.freshrpms.net/docs/alsa/ for precompiled RPM packages. 
 
ERROR: FreeType version  2.3.0  or higher is required. 
 make[2]: 進入目錄“/root/openjdk_compile/openjdk/jdk/make/tools/freetypecheck”
/bin/mkdir -p /root/openjdk_compile/openjdk/build/linux-amd64/btbins
rm -f /root/openjdk_compile/openjdk/build/linux-amd64/btbins/freetype_versioncheck
make[2]: 離開目錄“/root/openjdk_compile/openjdk/jdk/make/tools/freetypecheck”
Failed to build freetypecheck.  
ERROR: You do not have access to valid Cups header files. 
       Please check your access to 
           /usr/include/cups/cups.h 
       and/or check your value of ALT_CUPS_HEADERS_PATH, 
       CUPS is frequently pre-installed on many systems, 
       or may be downloaded from http://www.cups.org 
 
Exiting because of the above error(s). 
 
make: *** [post-sanity] 錯誤 1

分析：

1.設置環境變量方式有誤： 永久環境變量（屬於文件，比如profile以及home目錄下的），臨時環境變量（當前shell以及子線程），普通環境變量（當前shell）

解決：在當前shell執行相關export

2. FreeType 沒有安裝

解決：yum install freetype-devel

3. ALSA 沒有安裝（聲卡 應該沒什麽關系）

解決：sudo yum install alsa*

4：You do not have access to valid Cups header files.

解決：sudo yum install cups-devel.x86_64

二、開始編譯

執行命令：

make 2>&1 | tee $ALT_OUTPUTDIR/build.log

記錄下錯誤

錯誤1：

build-bootstrap-javac:
    [mkdir] Created dir: /root/openjdk_compile/build/langtools/build/bootstrap/gensrc
    [mkdir] Created dir: /root/openjdk_compile/build/langtools/build/bootstrap/classes
 [pcompile] Generating 7 resource files to /root/openjdk_compile/build/langtools/build/bootstrap/gensrc
     [copy] Copying 1 file to /root/openjdk_compile/build/langtools/build/bootstrap/gensrc
 [pcompile] Generating 1 resource files to /root/openjdk_compile/build/langtools/build/bootstrap/gensrc
    [javac] Compiling 298 source files to /root/openjdk_compile/build/langtools/build/bootstrap/classes
    [javac] /root/openjdk_compile/openjdk/langtools/src/share/classes/com/sun/tools/javac/comp/Resolve.java:2182: warning: [overrides] Class Resolve.InapplicableSymbolsError.Candidate overrides equals, but neither it nor any superclass overrides hashCode method
    [javac]         private class Candidate {
    [javac]                 ^
    [javac] error: warnings found and -Werror specified
    [javac] 1 error
    [javac] 1 warning
BUILD FAILED
/root/openjdk_compile/openjdk/langtools/make/build.xml:452: The following error occurred while executing this line:
/root/openjdk_compile/openjdk/langtools/make/build.xml:795: Compile failed; see the compiler error output for details.

解決方法：Bootstrap jdk版本換成jdk1.7

錯誤2：

/bin/ld: cannot find -lstdc++
collect2: error: ld returned 1 exit status
ln: failed to access ‘libjvm.so.1‘: Too many levels of symbolic links
/usr/bin/chcon: failed to get security context of ‘libjvm.so‘: Too many levels of symbolic links
ERROR: Cannot chcon libjvm.so
/usr/bin/objcopy --only-keep-debug libjvm.so libjvm.debuginfo
/usr/bin/objcopy: Warning: could not locate ‘libjvm.so‘.  reason: Too many levels of symbolic links
make[6]: *** [libjvm.so] Error 1
make[6]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir/linux_amd64_compiler2/product‘
make[5]: *** [the_vm] Error 2
make[5]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir/linux_amd64_compiler2/product‘
make[4]: *** [product] Error 2
make[4]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir‘
make[3]: *** [generic_build2] Error 2
make[3]: Leaving directory `/root/openjdk_compile/openjdk/hotspot/make‘
make[2]: *** [product] Error 2
make[2]: Leaving directory `/root/openjdk_compile/openjdk/hotspot/make‘
make[1]: *** [hotspot-build] Error 2
make[1]: Leaving directory `/root/openjdk_compile/openjdk‘
make: *** [build_product_image] Error 2

解決方案：sudo yum install libstdc++-static.x86_64

錯誤3：

Linking vm...
/usr/bin/objcopy --only-keep-debug libjvm.so libjvm.debuginfo
/usr/bin/objcopy --add-gnu-debuglink=libjvm.debuginfo libjvm.so
strip -g libjvm.so
[ -f libjvm.debuginfo ] || ln -s libjvm.debuginfo libjvm.debuginfo
zip -q -y libjvm.diz libjvm.debuginfo libjvm.debuginfo
rm -f libjvm.debuginfo libjvm.debuginfo
[ -f libjvm.diz ] || { ln -s libjvm.diz libjvm.diz; }
echo Linking launcher...
Linking launcher...
gcc -m64 -Xlinker -O1 -Wl,--hash-style=both  -Xlinker -z -Xlinker noexecstack -m64 -Xlinker -export-dynamic  -L `pwd` -o gamma launcher/java_md.o launcher/jli_util.o launcher/wildcard.o launcher/java.o -ljvm -lm -ldl -lpthread
make[6]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir/linux_amd64_compiler2/product‘
All done.
make[5]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir/linux_amd64_compiler2/product‘
cd linux_amd64_compiler2/product && ./test_gamma
./gamma: relocation error: /usr/java/jdk1.7.0_80/jre/lib/amd64/libjava.so: symbol JVM_FindClassFromCaller, version SUNWprivate_1.1 not defined in file libjvm.so with link time reference
make[4]: *** [product] Error 127
make[4]: Leaving directory `/root/openjdk_compile/build/hotspot/outputdir‘
make[3]: *** [generic_build2] Error 2
make[3]: Leaving directory `/root/openjdk_compile/openjdk/hotspot/make‘
make[2]: *** [product] Error 2
make[2]: Leaving directory `/root/openjdk_compile/openjdk/hotspot/make‘
make[1]: *** [hotspot-build] Error 2
make[1]: Leaving directory `/root/openjdk_compile/openjdk‘
make: *** [build_product_image] Error 2

解決方案：去掉hotspot/make/linux/Makefile 文件中所有的test_gamma即可

錯誤4：

/bin/mkdir -p /root/openjdk_compile/build/lib
rm -f /root/openjdk_compile/build/lib/content-types.properties
/bin/cp ../../../src/solaris/lib/content-types.properties /root/openjdk_compile/build/lib/content-types.properties
/bin/mkdir -p /root/openjdk_compile/build/lib
rm -f /root/openjdk_compile/build/lib/calendars.properties
/bin/cp ../../../src/share/lib/calendars.properties /root/openjdk_compile/build/lib/calendars.properties
rm -f /root/openjdk_compile/build/lib/currency.data
/usr/java/jdk1.7.0_80/bin/java -XX:-PrintVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -Xmx512m -Xms512m -XX:PermSize=32m -XX:MaxPermSize=160m -jar /root/openjdk_compile/build/btjars/generatecurrencydata.jar -o /root/openjdk_compile/build/lib/currency.data.temp < ../../../src/share/classes/java/util/CurrencyData.properties
Error: time is more than 10 years from present: 1136059200000
java.lang.RuntimeException: time is more than 10 years from present: 1136059200000
at build.tools.generatecurrencydata.GenerateCurrencyData.makeSpecialCaseEntry(GenerateCurrencyData.java:285)
at build.tools.generatecurrencydata.GenerateCurrencyData.buildMainAndSpecialCaseTables(GenerateCurrencyData.java:225)
at build.tools.generatecurrencydata.GenerateCurrencyData.main(GenerateCurrencyData.java:154)
make[4]: *** [/root/openjdk_compile/build/lib/currency.data] Error 1
make[4]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/java/java‘
make[3]: *** [all] Error 1
make[3]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/java‘
make[2]: *** [all] Error 1
make[2]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make‘
make[1]: *** [jdk-build] Error 2
make[1]: Leaving directory `/root/openjdk_compile/openjdk‘
make: *** [build_product_image] Error 2

解決方案：修改/jdk/src/share/classes/java/util/CurrencyData.properties文件,將其中10年以前的時間都設置到10年以內

錯誤5：

/usr/bin/gcc  -O2   -fno-strict-aliasing -fPIC -W -Wall  -Wno-unused -Wno-parentheses -pipe -fno-omit-frame-pointer -D_LITTLE_ENDIAN   -DNDEBUG -DARCH=‘"amd64"‘ -Damd64 -DLINUX -DRELEASE=‘"1.7.0-internal"‘ -DFULL_VERSION=‘"1.7.0-internal-root_2017_09_02_18_24-b00"‘ -DJDK_MAJOR_VERSION=‘"1"‘ -DJDK_MINOR_VERSION=‘"7"‘ -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_REENTRANT -D_LP64=1 -I. -I/root/openjdk_compile/build/tmp/sun/launcher/policytool/CClassHeaders -I../../src/solaris/javavm/export -I../../src/share/javavm/export -I../../src/share/bin -I../../src/solaris/bin -I../../src/share/native/java/util/zip/zlib-1.1.3 -DMAIN_CLASS=‘"sun.security.tools.policytool.PolicyTool"‘ -DJAVA_ARGS=‘{ "-J-ms8m", "sun.security.tools.policytool.PolicyTool",  }‘ -DLAUNCHER_NAME=‘"openjdk"‘ -DPROGNAME=‘"policytool"‘    -c -o /root/openjdk_compile/build/tmp/sun/launcher/policytool/obj64/main.o -DRELEASE=‘"1.7.0-internal"‘ -DFULL_VERSION=‘"1.7.0-internal-root_2017_09_02_18_24-b00"‘ -DJDK_MAJOR_VERSION=‘"1"‘ -DJDK_MINOR_VERSION=‘"7"‘ ../../src/share/bin/main.c
Rebuilding /root/openjdk_compile/build/bin/policytool because of /root/openjdk_compile/build/tmp/sun/launcher/policytool/obj64/main.o
/usr/bin/gcc -o /root/openjdk_compile/build/bin/policytool -Xlinker -O1 -Xlinker -version-script=../java/main/java/mapfile-amd64  -Wl,--hash-style=both -Xlinker -z -Xlinker defs -L/root/openjdk_compile/build/lib/amd64 -Wl,-soname=lib.so  -L /root/openjdk_compile/build/lib/amd64/jli  -Wl,--allow-shlib-undefined -Wl,-rpath -Wl,\$ORIGIN/../lib/amd64/jli -Wl,-rpath -Wl,\$ORIGIN/../jre/lib/amd64/jli /root/openjdk_compile/build/tmp/sun/launcher/policytool/obj64/main.o -lpthread  -L/usr/X11R6//lib64 -lX11 -ljli  -ldl -lc
/bin/ld: cannot find -lX11
collect2: error: ld returned 1 exit status
make[6]: *** [/root/openjdk_compile/build/bin/policytool] Error 1
make[6]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/launchers‘
make[5]: *** [build] Error 2
make[5]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/sun/security/tools‘
make[4]: *** [all] Error 1
make[4]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/sun/security‘
make[3]: *** [all] Error 1
make[3]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make/sun‘
make[2]: *** [all] Error 1
make[2]: Leaving directory `/root/openjdk_compile/openjdk/jdk/make‘
make[1]: *** [jdk-build] Error 2
make[1]: Leaving directory `/root/openjdk_compile/openjdk‘
make: *** [build_product_image] Error 2

解決方案：缺少X11包，yun instal *X11*

錯誤6：

../../../src/solaris/native/sun/awt/awt.h:38:27: fatal error: X11/Intrinsic.h: No such file or directory
 #include <X11/Intrinsic.h>

解決方案啊：yum install libXt-devel

錯誤7

 ../../../src/solaris/native/sun/awt/splashscreen/splashscreen_config.h:33:34: fatal error: X11/extensions/shape.h: No such file or directory

解決方案啊：yum install libXtst-devel

錯誤8

../../../src/solaris/native/sun/awt/awt_p.h:51:36: fatal error: X11/extensions/Xrender.h: No such file or directory

解決方案：yum install libXrender-devel

編譯結果：

#-- Build times ----------
Target all_product_build
Start 2017-09-02 20:39:54
End   2017-09-02 20:50:04
00:00:05 corba
00:00:08 hotspot
00:00:02 jaxp
00:00:04 jaxws
00:09:46 jdk
00:00:04 langtools
00:10:10 TOTAL
-------------------------
make[1]: Leaving directory `/root/openjdk_compile/openjdk‘

[[email protected] bin]#./java -version
openjdk version "1.7.0-internal"
OpenJDK Runtime Environment (build 1.7.0-internal-root_2017_09_02_18_24-b00)
OpenJDK 64-Bit Server VM (build 24.0-b56, mixed mode)

centos 6.9 編譯open jdk