pcre2: JIT not enabled in 10.43

[JustinAzoff]

Describe the bug

A bug in pcre2 configure scripts cause the JIT not to be enabled. This makes apps that use pcre2 heavily, like suricata, extremely slow.

Steps To Reproduce

Steps to reproduce the behavior:

$ nix build -L 'nixpkgs#pcre2' --rebuild
...
pcre2> pcre2-10.43 configuration summary:
...
pcre2>     Enable JIT compiling support ....... : no

or

$ nix shell 'nixpkgs#pcre2' -c pcre2grep --help|grep jit
      --no-jit                 ignored: this pcre2grep does not support JIT

Expected behavior

JIT should be enabled

Additional context

This was fixed upstream 6 days ago:

PCRE2Project/pcre2@ab7f871

As part of digging into this issue I looked to see how this may be broken on other distributions, and noticed that debian takes a different approach, instead of using auto, they do this:

#enable JIT only on architectures that support it (see pcre2jit.3)
ifneq ($(filter amd64 armel armhf arm64 i386 mips mipsel mips64el powerpc ppc64 ppc64el riscv64 s390x, $(DEB_HOST_ARCH)),)
deb_maint_conf_args +=--enable-jit
else
deb_maint_conf_args +=--disable-jit
endif

So I'm not sure if the preferred approach here would be to include the upstream patch, or use the more explicit --enable-jit option on supported platforms.

Notify maintainers

@ttuegel

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[JustinAzoff]

noticed i linked to the commit, the MR might be more useful: PCRE2Project/pcre2#396