编译jdk
2021-07-16
问题
Gcc版本过高
问题描述：
gcc 版本 11.1.0 (GCC) ，而提示gcc版本低于4.8.
问题原因：
Not Support compilers with multi-digit major version numbers
解决方案：
jdk13修改提交-8233880: Support compilers with multi-digit major version numbers
Make-没有规则可制作目标
问题描述：
Building target 'images' in configuration 'linux-x86_64-server-fastdebug'
make[3]: *** 没有规则可制作目标“/jdk12/build/linux-x86_64-server-fastdebug/buildtools/langtools_tools_classes/_the.BUILD_TOOLS_LANGTOOLS.vardeps”，由“/jdk12/build/linux-x86_64-server-fastdebug/buildtools/langtools_tools_classes/_the.BUILD_TOOLS_LANGTOOLS_batch” 需求。 停止。
make[3]: *** 正在等待未完成的任务....
make[2]: *** [make/Main.gmk:73：buildtools-langtools] 错误 2
ERROR: Build failed for target 'images' in configuration 'linux-x86_64-server-fastdebug' (exit code 2)
No indication of failed target found.
Hint: Try searching the build log for '] Error'.
Hint: See doc/building.html#troubleshooting for assistance.
问题原因：
make 4.3 breaks build
解决方案：
jdk15修改提交-8237879: make 4.3 breaks build
重定义parentPathv
问题描述：
* For target support_native_java.base_libjava_BUILD_LIBJAVA_link:
/usr/bin/ld: jdk12/build/linux-x86_64-server-fastdebug/support/native/java.base/libjava/childproc.o:/jdk12/src/java.base/unix/native/libjava/childproc.h:121: multiple definition of `parentPathv'; /jdk12/build/linux-x86_64-server-fastdebug/support/native/java.base/libjava/ProcessImpl_md.o:/jdk12/src/java.base/unix/native/libjava/childproc.h:121: first defined here
问题原因：
A recent GCC patch (will be in GCC 10) exposes a couple of "multiple definition" link errors when building the jdk tip.
解决方案：
Moving forward, building jdk with latest versions of GCC will trigger this error. Specifying "--with-extra-cflags='-fcommon'" can make it work, but it just got things hidden again.
（2021-07-16）未彻底解决-GCC default -fno-common exposes “multiple definition” link errors
初步成功
openjdk 12-internal 2019-03-19
OpenJDK Runtime Environment (fastdebug build 12-internal+0-adhoc.haoge.jdk12)
OpenJDK 64-Bit Server VM (fastdebug build 12-internal+0-adhoc.haoge.jdk12, mixed mode)