编译时出现以下错误：
build-bootstrap-javac: [javac] Compiling 95 source files to /home/xlf/jdk7u-dev/build/langtools/build/bootstrap/classes [javac] /home/xlf/jdk7u-dev/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 /home/xlf/jdk7u-dev/langtools/make/build.xml:452: The following error occurred while executing this line: /home/xlf/jdk7u-dev/langtools/make/build.xml:795: Compile failed; see the compiler error output for details. Total time: 3 seconds make[2]: *** [build] Error 1 make[2]: Leaving directory `/home/xlf/jdk7u-dev/langtools/make' make[1]: *** [langtools-build] Error 2 make[1]: Leaving directory `/home/xlf/jdk7u-dev' make: *** [build_product_image] Error 2 原因是bootstrap jdk错误，自己从新下了个jdk7，ok #!/usr/bin/env bash #语言选项，这个必须设置，否则编译好后会出现一个HashTable的NPE错 export LANG=C #Bootstrap JDK的安装路径。必须设置。 export ALT_BOOTDIR=/usr/lib/jvm/jdk1.7 #允许自动下载依赖 export ALLOW_DOWNLOADS=true #并行编译的线程数，设置为和CPU内核数量一致即可 export HOTSPOT_BUILD_JOBS=4 export ALT_PARALLEL_COMPILE_JOBS=4 #比较本次build出来的映像与先前版本的差异。这个对我们来说没有意义，必须设置为false，否则sanity检查会报缺少先前版本JDK的映像。如果有设置dev或者DEV_ONLY=true的话这个不显式设置也行。 export SKIP_COMPARE_IMAGES=true #使用预编译头文件，不加这个编译会更慢一些 export USE_PRECOMPILED_HEADER=true #要编译的内容 export BUILD_LANGTOOLS=true #export BUILD_JAXP=false #export BUILD_JAXWS=false #export BUILD_CORBA=false export BUILD_HOTSPOT=true export BUILD_JDK=true #要编译的版本 #export SKIP_DEBUG_BUILD=false #export SKIP_FASTDEBUG_BUILD=true #export DEBUG_NAME=debug #把它设置为false可以避开javaws和浏览器Java插件之类的部分的build。 BUILD_DEPLOY=false #把它设置为false就不会build出安装包。因为安装包里有些奇怪的依赖，但即便不build出它也已经能得到完整的JDK映像，所以还是别build它好了。 BUILD_INSTALL=false #编译结果所存放的路径 export ALT_OUTPUTDIR=~/openjdk7/build #这两个环境变量必须去掉，不然会有很诡异的事情发生（我没有具体查过这些“”诡异的事情”，Makefile脚本检查到有这2个变量就会提示警告“） unset JAVA_HOME unset CLASSPATH make 2>&1 | tee $ALT_OUTPUTDIR/build.log编译过程出现错误 http://blog.csdn.net/zitong_ccnu/article/details/50149757
home/hadoopuser1/openjdk7/build/btjars/generatecurrencydata.jar -o /home/hadoopuser1/openjdk7/build/lib/currency.data.temp \ < ../../../src/share/classes/java/util/CurrencyData.properties Error: time is more than 10 years from present: 1136059200000 java.lang.RuntimeException: time is more than 10 years from present: 1136059200000 at build.tools.generatecurrencydata.GenerateCurrencyData.makeSpecialCaseEntry(GenerateCurrencyData.java:285) at build.tools.generatecurrencydata.GenerateCurrencyData.buildMainAndSpecialCaseTables(GenerateCurrencyData.java:225) at build.tools.generatecurrencydata.GenerateCurrencyData.main(GenerateCurrencyData.java:154) make[4]: *** [/home/hadoopuser1/openjdk7/build/lib/currency.data] Error 1 make[4]: Leaving directory `/home/hadoopuser1/openjdk7/openjdk-7u40-fcs-src-b43-26_aug_2013/jdk/make/java/java' make[3]: *** [all] Error 1 make[3]: Leaving directory `/home/hadoopuser1/openjdk7/openjdk-7u40-fcs-src-b43-26_aug_2013/jdk/make/java' make[2]: *** [all] Error 1 make[2]: Leaving directory `/home/hadoopuser1/openjdk7/openjdk-7u40-fcs-src-b43-26_aug_2013/jdk/make' 解决方法： CurrencyData.properties 中的时间改成10年内ok
#-- Build times ---------- Target all_product_build Start 2016-08-15 22:38:53 End 2016-08-15 23:33:37 00:04:32 corba 00:22:31 hotspot 00:00:48 jaxp 00:01:01 jaxws 00:24:11 jdk 00:01:41 langtools 00:54:44 TOTAL
hadoopuser1@master:/exapp/openjdk7/build/j2sdk-image/jre/bin$ l java* orbd* policytool* rmiregistry* tnameserv* keytool* pack200* rmid* servertool* unpack200* hadoopuser1@master:/exapp/openjdk7/build/j2sdk-image/jre/bin$ ./java -version openjdk version "1.7.0-internal" OpenJDK Runtime Environment (build 1.7.0-internal-hadoopuser1_2016_08_15_22_38-b00) OpenJDK 64-Bit Server VM (build 24.0-b56, mixed mode) hadoopuser1@master:/exapp/openjdk7/build/j2sdk-image/jre/bin$
