Using the LLVM static compiler (llc), you can compile the LLVM IR into object files for a specific target triple. Though the target triples are not documented very well, the LLVM infrastructure is all open source, so a quick search through the source code will lead you here.
Unfortunately, there is no documentation for a discrete list of possible target triples you can use. However, if you know exactly what system you’re targeting, constructing a triple is fairly easy. Taken from the target triple documentation, you can see :
The triple has the general format
<arch><sub>-<vendor>-<sys>-<abi>,
where:
arch=x86_64,i386,arm,thumb,mips, etc.sub= for ex. on ARM:v5,v6m,v7a,v7m, etc.vendor=pc,apple,nvidia,ibm, etc.sys=none,linux,win32,darwin,cuda, etc.abi=eabi,gnu,android,macho,elf, etc.
Once you figure out what target triple you’re using, you specify it as a string using the -mtriple flag. Here are some examples:
- Windows:
-mtriple=i686-pc-win32-gnu - Linux:
-mtriple=i686-pc-linux-gnu - IOS:
-mtriple=armv7-apple-ios - Android:
-mtriple=arm-linux-androideabi
Next, you need to specify that you want to compile an object file using the filetype flag:
-filetype=obj
This should be enough if I understand your question correctly.
If you’re expecting to use a single file on all platforms and operating systems, while this is possible, it would take a lot of work and I wouldn’t expect an answer regarding that here on stackoverflow.