如何在x86-64机器上为i386目标构建rpm？

我正在使用rpmbuild命令构建一个rpm ：

rpmbuild -bb --root <DIRECTORY> --target i386 --define "_topdir <DIRECTORY>" <specfile>.spec

当我使用SLED 10 SP3 x86计算机时，它可以成功运行。但是在我的SLES 10 SP3 x64虚拟机上，它显示以下错误：

error: No compatible architectures found for build

最初我没有使用--targetoption，它仍然在x86机器上运行，但是x64机器上存在相同的错误。

请帮助我解决此错误

从Fedora文档中获取rpm，spec文件和rpmbuild：

The --target option sets the target architecture at build time. Chapter 3,
Using RPM covers how you can use the --ignoreos and --ignorearch options 
when installing RPMs to ignore the operating system and architecture that 
is flagged within the RPM. Of course, this works only if you are installing 
on a compatible architecture.

On the surface level, the --target option overrides some of the macros in 
the spec file, %_target, %_target_arch, and %_target_os. This flags the RPM 
for the new target platform.

Under the covers, setting the architecture macros is not enough. You really 
cannot create a PowerPC executable, for example, on an Intel-architecture 
machine, unless you have a PowerPC cross compiler, a compiler that can make 
PowerPC executables.

http://docs.fedoraproject.org/zh-CN/Fedora_Draft_Documentation/0.1/html/RPM_Guide/ch-rpmbuild.html

因此，请确保已安装其他编译器（例如gcc.i686和gcc.x86_64）。

由于您正在使用“ -bb”标志，这意味着您是从二进制进行构建的，因此您无需为其他体系结构安装编译器。

只需删除规范文件中的“ Buildarch”行，然后从命令行传递它即可

--target i386

要么

--target x86_64

它应该为您创建rpm。