libressl: fix build on macOS < 10.14

[aeiouaeiouaeiouaeiouaeiouaeiou]

Closes: https://trac.macports.org/ticket/68770

Description

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.6.8 10K549 x86_64
Xcode 3.2.6 10M2518

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL?
• checked your Portfile with port lint --nitpick?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@neverpanic for port libressl.
@artkiver for port libressl.

[aeiouaeiouaeiouaeiouaeiouaeiou]

These changes should be synchronized with libressl-devel portfile, but I'm assigning that job to @artkiver; I also want to see how this works on other buildbots.

[neverpanic]

LG2M, but let's wait for @artkiver to provide feedback.

[artkiver]

LG2M, but let's wait for @artkiver to provide feedback.

I don't have older systems running those versions of OS X and XCode to test at the moment, but I will take your word that this is tested and functioning there.

Thank you for the improvement! I'm happy to make changes to the libressl-devel Portfile as well, though again I won't be able to do much testing on my end with my present resources (possibly I could try spinning up a VM on an older laptop, but that will take me some time).

[artkiver]

I submitted a PR to update libressl-devel here: #21556

Basically just copy and pasted the pertinent changes for the Portfile based upon this PR, but as stated previously I do not at the moment have an older OS X system running < 10.14 to test; but I am guessing it is OK?

Thank you again to @aeiouaeiouaeiouaeiouaeiouaeiou for the improvements!

[TheRealKeto]

I decided to test this change and it seems to have built just fine on macOS 10.7.5 11G63 x86_64 running Xcode 4.6.3 4H1503.