os: use _dyld_get_image_name() to increase compatibility with older versions of Mac OS X

[programmingkidx]

The libproc.h header is not available on Mac OS 10.4 and older. It prevents V from being built on these operating systems. The solution is to replace the functions from libproc.h with the function _dyld_get_image_name() to get the path of the program.

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[programmingkidx]

I am currently seeing this error:

2026-02-16T22:48:24.190085Z [INFO ] cmd: v -cg -cstrict -o vstrict1 cmd/v
builder error: 
Error: /tmp/v_501/vstrict1.01KHMA7ZW22YXPAT0297Q21JMH.tmp.c:27543:9: error: initializing 'char *' with an expression of type 'const char *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .
                char* const_path = _dyld_get_image_name(current_application);
                      ^            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

According to https://docs.vlang.io/v-and-c.html it mentions how to handle this issue:

"Note also the second parameter const char *format, which was redeclared as const_format &char . The const_ prefix in that redeclaration may seem arbitrary, but it is important, if you want to compile your code with -cstrict or thirdparty C static analysis tools. V currently does not have another way to express that this parameter is a const (this will probably change in V 1.0)."

I am pretty sure I followed the rules. Does anyone have a suggestion on how to fix this issue?

[programmingkidx]

Thank you for the help spytheman. Is it ok to change 'charptr' back to '&char'? I only made the change to see if I could fix the problem I was having. The change did not work.