Posted on 2012-10-12 15:46
卡洛shll 阅读(548)
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Unix系统相关
在AIX上编译64位的库基本上有两个方法一个是设置OBJECT_MODE环境变量，另一个是使用-q64的编译选项。
关于OBJECT_MODE环境变量：
The AIX operating system provides support for the OBJECT_MODE environment variable to enable the user to obtain a 64-bit development environment. AIX tools use the setting of OBJECT_MODE to determine the type of object to be used or created. The OBJECT_MODE environment variable has three recognized settings:
- OBJECT_MODE=32
- Works with 32-bit objects
- OBJECT_MODE=64
- Works with 64-bit objects
- OBJECT_MODE=32_64
- Works with either 32-bit or 64-bit objects
关于-q64:
-q32, -q64
Description
Selects either 32-bit or 64-bit compiler mode.
Notes
The -q32 and -q64 options override the compiler mode set by the value of the OBJECT_MODE environment variable, if it exists. If this option is not explicitly specified on the command line, and the OBJECT_MODE environment variable is not set, the compiler will default to 32-bit output mode.
If the compiler is invoked in 64-bit mode, the __64BIT__ preprocessor macro is defined.