GDB Not stepping in to library source even though debug build - c++

Question

I am building a C library from source and linking to my C++ application. The library's CMake output confirms Clang 14 and debug build:
CC=clang cmake ..
-- Build type: Debug
-- The C compiler identification is Clang 14.0.0
make shows no optimization:
-O0 -g3 -std=c99 -Wall -Wextra -Wwrite-strings -Wformat=2 -Wno-format-nonliteral -Wvla -Wlogical-op -Wshadow -Wformat-signedness -Wformat-overflow=2 -Wformat-truncation -Werror
sudo make install shows debug and the install path:
Install the project...
-- Install configuration: "Debug"
-- Installing: /usr/local/lib/the_library.a
I have checked the libraries were modified.
My application, my compiler flags showing debug/optimization:
-Wall -Wextra -pedantic -march=native -Werror=return-type -Wswitch-enum -Wconversion -Werror=attributes -Werror=unused-variable -Werror=unused-parameter -Werror=unused-result -Werror=address -Werror=unused-but-set-variable -Werror=unused-function -Werror=unused-but-set-parameter -Werror=uninitialized -Werror=sign-compare -Werror=float-conversion -Werror=unknown-warning-option -Werror=unused-private-field -Werror=return-stack-address -Wno-bitwise-instead-of-logical -Werror=reorder-ctor -Wshorten-64-to-32 -g -O0 -fPIE -fno-omit-frame-pointer -std=c++20
And my linker showing the correct library:
-ldl /usr/local/lib/the_library.a
I then start GDB:
gdb --args ./my_application
b SomeFile.h:200
Breakpoint 1 at 0x13d7c4: SomeFile.h:200. (3 locations)
Line 200 is a function call to the library but in my application. It hits the breakpoint:
layout src
s
but won't step in to the library
HOWEVER, if I set the breakpoint to the name of the library's function, it steps SUCCESSFULLY.
Is the problem this (3 locations) on the breakpoint? The library function is not inlined, nor is SomeFile.h:200.