발표자료 {7. Linking} {CSAPP}

Linking

• Static linking at compile time
• Dynamic linking at load time
• Dynamic linking at runtime

Compiler Drivers

Static linking

• Symbol resolution
• Relocation

Object files

• relocatable object files
• executable object files
• shared object files

Relocatable object files

Symbols and Symbol Tables

같은 이름의 다른 함수에 있는 static 변수는 에러 난다? 아니다?

Symbol Resolution

Linker Symbol Entry

Relocation

Executable Object Files

Loading Executable Files

Dynamic Linking with Shared Libraries

• -fpic
• -shared

PIC?

• Position
• Independent
• Code

Library Interpositioning

실습

Library {C}
ldd로 필요 library 확인하기