我想对JDK里面的核心API进行一些修改，于是下了openjdk，全部编译一遍。
用的是centos(Red Hat 4.1.2-46)
我先试了编译openjdk7，不成功，然后又试了6，JDK7的一些环境我都装好，测试正确。

编译 openjdk6 (openjdk-6-src-b24-14_nov_2011.tar)
缺少一个Motif，readme上面提供了那个版本下载链接已经失效了，所以装了
openMotif-2.2.3，随便找的一个。


最后make的时候报错:

make[2]: Entering directory `/root/soft/openMotif-2.2.3/config/util'
gcc -DHAVE_CONFIG_H -I. -I. -I../../include     -g -O2 -Wall -Wno-unused -Wno-comment -c makestrs.c
makestrs.c:51:21: error: X11/Xos.h: No such file or directory
makestrs.c: In function 'WriteHeaderProlog':
makestrs.c:115: warning: implicit declaration of function 'strcmp'
makestrs.c: In function 'CopyTmplProlog':
makestrs.c:228: warning: implicit declaration of function 'strlen'
makestrs.c:228: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c:231: warning: implicit declaration of function 'strncmp'
makestrs.c: In function 'WriteHeader':
makestrs.c:275: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c:279: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c: In function 'DoLine':
makestrs.c:480: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c:510: warning: implicit declaration of function 'strcpy'
makestrs.c:510: warning: incompatible implicit declaration of built-in function 'strcpy'
makestrs.c:529: warning: incompatible implicit declaration of built-in function 'strcpy'
makestrs.c:544: warning: incompatible implicit declaration of built-in function 'strcpy'
makestrs.c:586: warning: implicit declaration of function 'index'
makestrs.c:586: warning: incompatible implicit declaration of built-in function 'index'
makestrs.c:592: warning: implicit declaration of function 'strcat'
makestrs.c:592: warning: incompatible implicit declaration of built-in function 'strcat'
makestrs.c: In function 'IntelABIIndexEntries':
makestrs.c:628: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c: In function 'DefaultIndexEntries':
makestrs.c:643: warning: incompatible implicit declaration of built-in function 'strlen'
makestrs.c: In function 'DoComment':
makestrs.c:673: warning: incompatible implicit declaration of built-in function 'index'
makestrs.c:678: warning: implicit declaration of function 'strncpy'
makestrs.c:678: warning: incompatible implicit declaration of built-in function 'strncpy'
makestrs.c: In function 'main':
makestrs.c:733: warning: incompatible implicit declaration of built-in function 'strlen'
make[2]: *** [makestrs.o] Error 1
make[2]: Leaving directory `/root/soft/openMotif-2.2.3/config/util'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/soft/openMotif-2.2.3/config'
make: *** [all-recursive] Error 1

后来直接用yum安装一个，虽然成功了，但是
make sanity  报错

ERROR: You do not have access to valid Motif 2.1 header files. 
       Please check your access to (for example) 
           /root/soft/openMotif-2.2.3/include/Xm/AtomMgr.h 
       and/or check your value of ALT_MOTIF_DIR. 

按照编译readme上说的，如果安装了openMotif，则会有
/usr/include/Xm
这个目录，但我装了没有。




编译openjdk7 (openjdk-7-fcs-src-b147-27_jun_2011)
make sanity 正确，不过最后编译的时候报错了。
错误日志在这里：
http://michael9527.iteye.com/blog/1481620
错误提示看的莫名其妙。

/usr/bin/ld: cannot find -lX11 

找不到 X11 库啊

不知道这帖的笔记有没有帮助：http://rednaxelafx.iteye.com/blog/875957

yum install libXtst
yum install libXtst-devel
即可