在AIX系统中，xlc编译器是否有对应GCC -rdynamic的等价标志？

Great question! If you're working with IBM's xlc compiler on AIX and need the same functionality as GCC's -rdynamic flag, you'll use a combination of two linker flags—since xlc splits this behavior into separate options instead of packing it into a single flag.

Here's what each flag does:

• -brtl: This instructs the linker to generate a runtime-linkable executable. This is the foundational step that allows the executable to interact with dynamic libraries and makes symbols available for dynamic lookup, matching part of -rdynamic's role.
• -bexpall: This tells the linker to export all global symbols from the executable to the dynamic symbol table. This is the critical piece that mirrors -rdynamic's core purpose—ensuring symbols are visible to dynamically loaded code (like plugins loaded via dlopen()) or debugging tools such as gdb.

For most use cases where you'd use -rdynamic in GCC, you'll want to use both flags together. A sample compilation command would look like:

xlc -brtl -bexpall my_source.c -o my_executable

I’ve relied on this flag combination extensively when porting GCC-based codebases to AIX, and it consistently delivers the symbol visibility and dynamic linking behavior you’d expect from -rdynamic.

内容的提问来源于stack exchange，提问作者Bob