This is an attempt to fix the issue #30978 .
To briefly summarize, @Sjors found that while compiling dependencies on macOS 15.0 the following “No such file or directory” are generated while these tools are installed.
0$ cd depends
1$ make
2/bin/sh: command -v llvm-ranlib: No such file or directory
3/bin/sh: command -v llvm-strip: No such file or directory
4/bin/sh: command -v llvm-nm: No such file or directory
5/bin/sh: command -v llvm-objdump: No such file or directory
6/bin/sh: command -v dsymutil: No such file or directory
The proposed fix conditionally defines the necessary variables for these tools in the ./depends/Makefile when building on macOS. The rationale is described in more detail in #30978 (comment) as the Solution number 3.
cc @hebasto
