[BUG] Receiving 'vfork' is deprecated: warnings while compiling Kakoune from source

[VKondakoff]

Version of Kakoune

2024.05.09

Reproducer

1. Clone https://github.com/mawww/kakoune.git
2. cd to kakoune
3. sudo make install

Outcome

c++   -I/opt/local/include  -std=c++2a -Wall -Wextra -pedantic -Wno-unused-parameter -Wno-sign-compare -O3 -g3  -fsized-deallocation  -MD -MP -MF src/.shell_manager.opt.d -c -o src/shell_manager.opt.o src/shell_manager.cc
src/shell_manager.cc:118:21: warning: 'vfork' is deprecated: Use posix_spawn or fork [-Wdeprecated-declarations]
    if (pid_t pid = vfork())
                    ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/unistd.h:604:1: note: 'vfork' has been explicitly marked deprecated here
__deprecated_msg("Use posix_spawn or fork")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
1 warning generated.

Expectations

No warnings (in an ideal world). ;)

Additional information

MacOS 12.7.4, zsh,
Apple clang version 14.0.0 (clang-1400.0.29.202)
Target: x86_64-apple-darwin21.6.0
Thread model: posix

[mawww]

vfork is indeed deprecated according to POSIX but is a nice performance optimization on most platforms and the posix_spawn family of function is pretty bad as it enforces dynamic allocations for the file actions even though their number is statically known as compile time.

There might be a way to silence the warning but at the moment I do not intend to replace the uses of vfork.

[VKondakoff]

Thanks for the info. Closing the issue.