PROPOSAL: Remove 32-bit binaries from the distribution (Linux and Windows)

[tlimoncelli]

Is your feature request related to a problem? Please describe.

Is anyone still using 32-bit binaries? I propose we remove them from the distribution. Folks have until Sept 10 to speak up if they are still needed.

Specifically, we'll remove the following builds:

    • building                                       binary=dist/build_linux_386/dnscontrol
    • building                                       binary=dist/build_windows_386/dnscontrol.exe
    • building                                       binary=dist/build_freebsd_386/dnscontrol

Why?

• It slows down build times (testing finds it will reduce builds from ~11 to ~8 minutes)
• We don't believe they are used.

NOTE: The code should still build for 32-bit systems. We don't do anything to prevent someone from doing their own 32-bit builds.

Describe the solution you'd like

No longer build 32-bit binaries.

Describe alternatives you've considered
n/a

Additional context
n/a

[tlimoncelli]

Compare the build time for:

• master: 11m 28s
• removed 32-bit items: 8m 4s
• Using "ignore": 8m 18s

[Firefishy]

The 386 docker build immediately throws a segfault for me (under emulation) ;-) No loss

 % docker run --platform linux/386 ghcr.io/stackexchange/dnscontrol:4.1.1 version
fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x4f0 pc=0x808dfbf]

runtime stack:
runtime.throw({0x938205a, 0x2a})
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/panic.go:1047 +0x4d fp=0x40800da0 sp=0x40800d8c pc=0x807e41d
runtime.sigpanic()
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/signal_unix.go:821 +0x2b8 fp=0x40800db8 sp=0x40800da0 pc=0x8094698
runtime.runqput(0x0, 0xa0063c0, 0x1)
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/proc.go:5969 +0xaf fp=0x40800dd8 sp=0x40800db8 pc=0x808dfbf
runtime.newproc.func1()
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/proc.go:4248 +0x56 fp=0x40800dec sp=0x40800dd8 pc=0x8089be6
runtime.systemstack()
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/asm_386.s:370 +0x41 fp=0x40800df0 sp=0x40800dec pc=0x80ada31

goroutine 1 [running, locked to thread]:
	goroutine running on other thread; stack unavailable

goroutine 2 [runnable]:
runtime.forcegchelper()
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/proc.go:296 fp=0xa04bff0 sp=0xa04bfec pc=0x80812c0
runtime.goexit()
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/asm_386.s:1326 +0x1 fp=0xa04bff4 sp=0xa04bff0 pc=0x80aedc1
created by runtime.init.5
	/opt/hostedtoolcache/go/1.20.4/x64/src/runtime/proc.go:293 +0x23