Musl riscv-linux cross compiler objdump - how to produce source code for the library functions in the assembly output

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C

Linux

GCC

I use musl cross compiler made for riscv target to compile my program. When I use the cross compiler's objdump with -S flag, it produces the source code of the main program aligned with the corresponding assembly code. I want similar source code information for the library functions included in the code. For example, when I use "pthread_create" in the program, the objdump produces only the assembly code for the pthread_create function. It does not add the source code info. How do I enable that? Do I need to re-make the cross compiler? What flags do I need?

What I have tried:

I re-build the cross compiler with --enable-debug flag (source: GitHub - richfelker/musl-cross-make: Simple makefile-based build for musl cross compiler[^] )

Following are the compile commands I tried:

musl-riscv-linux-gcc -static -g pthread_code.c -o pthread_musl_debuginfo

musl-riscv-linux-objdump -x --source --full-contents -D -S pthread_musl_debuginfo > pthread_musl_debuginfo_objdump