Difference between revisions of "Cross compilation"
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Put simply, a compiler takes source code as input and produces a binary executable as output. Cross compilation refers to the case where the binary code produced is designed to execute on a different machine architecture than the host system. | Put simply, a compiler takes source code as input and produces a binary executable as output. Cross compilation refers to the case where the binary code produced is designed to execute on a different machine architecture than the host system. | ||
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*The build process can be run as a non-root user on the host unix system, preventing damage to the host system if the toolchain misbehaves | *The build process can be run as a non-root user on the host unix system, preventing damage to the host system if the toolchain misbehaves | ||
| − | =Host enviroment= | + | == Host enviroment == |
*[[Enviroment variables affecting cross toolchains]] | *[[Enviroment variables affecting cross toolchains]] | ||
*a version of ''gcc'' and ''binutils'' that supports cross compilation is required in the ''host'' enviroment | *a version of ''gcc'' and ''binutils'' that supports cross compilation is required in the ''host'' enviroment | ||
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*libraries are required to be present that are compatible with the ''target'' system. | *libraries are required to be present that are compatible with the ''target'' system. | ||
| − | =See also= | + | == See also == |
*[http://buildroot.uclibc.org buildroot] | *[http://buildroot.uclibc.org buildroot] | ||
*Wikipedia: [[w:Cross-compiling|Cross-compiling]] | *Wikipedia: [[w:Cross-compiling|Cross-compiling]] | ||
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*[http://kegel.com/crosstool/crosstool-0.42/buildlogs/ gcc toolchain cross compilation matrix] | *[http://kegel.com/crosstool/crosstool-0.42/buildlogs/ gcc toolchain cross compilation matrix] | ||
*[[Wikipedia:Eat one's own dog food|Eating one's own dog food]] | *[[Wikipedia:Eat one's own dog food|Eating one's own dog food]] | ||
| + | [[Category:Peerix]][[Category:Linux]] | ||
Latest revision as of 09:23, 17 January 2009
Put simply, a compiler takes source code as input and produces a binary executable as output. Cross compilation refers to the case where the binary code produced is designed to execute on a different machine architecture than the host system.
For example: Using a C compiler on a PPC system to produce code to run on an Intel.
A cross-compilation environment (refered to as the toolchain) provides a number of advantages, even when the host and target architectures are the same.
- Strict control of the version on cc, libc and binutils used
- The build process can be run as a non-root user on the host unix system, preventing damage to the host system if the toolchain misbehaves
Host enviroment
- Enviroment variables affecting cross toolchains
- a version of gcc and binutils that supports cross compilation is required in the host enviroment
- headers to link against are required
- libraries are required to be present that are compatible with the target system.
