I am compiling my program like this,
clang++ -O4 -emit-llvm file1.cpp -c -o file1.bc -pthread
clang++ -O4 -emit-llvm file2.cpp -c -o file2.bc -pthread
llvm-link file1.bc file2.bc -o main.ll -S
How do I specify linking with -ldl
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pythonic
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Did you try `clang++ -o main.ll file1.bc file2.vs -ldl` ? – ismail Dec 10 '12 at 13:59
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No that doesn't work, it says unknown command line – pythonic Dec 10 '12 at 14:20
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file2.vs is a typo on my side but I guess you fixed it. You should post the whole error log because clang is able to link. – ismail Dec 10 '12 at 14:22
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It says this: llvm-link: Unknown command line argument '-ldl'. Try: 'llvm-link -help' llvm-link: Did you mean '-d'? – pythonic Dec 10 '12 at 14:27
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Could you show exactly what you typed? @İsmail'cartman'Dönmez 's suggestion should work. – Useless Dec 10 '12 at 14:43
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llvm-link is a program which "links" together LLVM IR files into a single IR file; you can read more about it here. It does not have any relation to ld or to linking object files together.
If you do want to generate object code and/or executables, see these related questions:
In short, you should be using native tools for assembling and linking (as and ld, for instance), though there is currently some experimental support for generating object files and for linking in LLVM.
In any case, Clang itself can invoke a platform linker - that is actually the default, but of course you have overridden by providing -c.
