redis @7.0.1: builds failing for 10.14 and earlier: fatal error: 'jemalloc/jemalloc.h' file not found

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-10.11_x86_64-builder/builds/185098/steps/install-port/logs/stdio

/bin/sh: pkg-config: command not found

In file included from quicklist.c:34:
./zmalloc.h:50:10: fatal error: 'jemalloc/jemalloc.h' file not found
#include <jemalloc/jemalloc.h>
         ^

[mascguy (Christopher Nielsen)]

Of note, this failure is occurring for macOS 10.14 and earlier. Whereas previously, this port was building essentially across-the-board.

If we can't fix this quickly, I'd like to suggest that this change be reverted.

[mascguy (Christopher Nielsen)]

It looks like a fix is pending, via the following PR. Tested locally on 10.12 through 10.14, and this does the trick:

​PR 15092 - redis: only link libatomic on i386

While a minor fix is needed for Universal builds - per an outstanding comment from @ryandesign - otherwise it looks good.

[kencu (Ken)]

clang doesn’t use libatomic.

It’s a gcc-only thing.

[mascguy (Christopher Nielsen)]

Fixed via aforementioned PR; commit:

[96579f7915115798abdd5ff8c69d5d7b3b5464fd/macports-ports]