如何从多个来源生成单个LLVM IR

Question

Compiling .c files to a single LLVM IR and link multiple libraries during the compilation.

An example here with gcc:

gcc -c -Wall -g3 -DVERSION=\"1.1.2\" ssl_proxy.c -o ssl_proxy.o
gcc -o ssl_proxy ssl_proxy.o  -lssl -lcrypto

Now, I want to compile the ssl_proxy.c to ssl_proxy.ll , simply using llvm-gcc -S -emit-llvm won't work as it will not let me link -lssl -lcrypto libraries.

Through this example I hope people can explain a bit more details about compilation with llvm-gcc (not clang), so that all visitors can learn from it and know how to compile complex multiple sources into one LLVM IR.

Answer 1

将源文件编译到LLVM IR中不会执行链接，因此它不需要任何库-它只需要标头。