[LLVMbugs] [Bug 375] NEW: Building Should Honor Build/Host/Target Triplet

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=375

           Summary: Building Should Honor Build/Host/Target Triplet
           Product: Build scripts
           Version: cvs
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Makefiles
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rspencer at x10sys.com
                CC: sabre at nondot.org


autoconf supports three options specifically tailored for compilers:

System types:
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
  --target=TARGET   configure for building compilers for TARGET [HOST]

These configuration options should be honored in LLVM so that cross-compilers
and compilers for different hosts can be built. In particular, a good first
approximation of this would be to ensure that if build == host == target that
the only backends to be compiled/used are for the "target" platform. This will
save significant compilation time and allow tailored binaries to be compiled.



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