How to add and link new library to the existing clang libraries?

Clang Frontend
1

Hello All,

I want to add and link a new library like libClangOmp.a to the existing clang libraries like libClangLex.a/libClangLex.a/etc so that it finally becomes a part of libclang.so. What is the basic procedure to do so? Currently, I am getting ‘undefined reference’ linker error to a function defined in libClangOmp.a and which is called from libClangLex.a. I must be missing something to mention in makefiles?

2

You have to tweak clang/tools/*/Makefile(s).

For example, tools/libclang/Makefile,

USEDLIBS = clangARCMigrate.a clangRewriteCore.a clangRewriteFrontend.a \
           clangFrontend.a clangDriver.a \
           clangSerialization.a \
           clangParse.a clangSema.a clangEdit.a clangAnalysis.a \
           clangAST.a clangLex.a clangTooling.a clangBasic.a

You may put your clangOmp.a after clangLex.a, as long as clangLex.a
depends on your clangOmp.a.

           clangAST.a clangLex.a clangOmp.a clangTooling.a clangBasic.a

It should be done for each tools/*/Makefile(s).
Note, USELIBS is sensitive to linking order.

...Takumi

3

Thanks Takumi and Umesh Kalappa for your reply. Yes, you right.