Re: error trying to compile ca-gateway on macOS mojave

["Johnson, Andrew N. via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Vivian,

On Aug 27, 2020, at 1:23 PM, Vivian O'Dell via Tech-talk <tech-talk at aps.anl.gov> wrote:

I get the same error message with more recent versions of ca-gateway as well. I'm using EPICS 3.15.7.

This version of gateway compiles fine on the beagle bone. Is there an obvious fix for this?

I get the same errors as you on Mojave; after some investigation I assume there’s something in the Linux (glibc) implementation of regex.h which gateway is using that isn’t present in Apple’s version, so the header exists but doesn’t define those structures.

A fix that works for me is to switch to using PCRE; there’s a configuration option you use to do that:

diff --git a/configure/CONFIG_SITE b/configure/CONFIG_SITE

index 5dee672..8588491 100644

--- a/configure/CONFIG_SITE

+++ b/configure/CONFIG_SITE

@@ -13,7 +13,7 @@

 #######################################################################

 

 # Use Perl compatible regular expressions (PCRE) instead of basic regex

-#USE_PCRE=YES

+USE_PCRE=YES

 

 # For PCRE on Linux

 #    requires package pcre-devel (or libpcre3-dev) for compiling

My version of pcre seems to be from homebrew. I’m not sure what installed it but there are probably a few versions available that should work if you don’t have that. There are some configuration variables that follow the USE_PCRE setting in the above file that you might have to fiddle with, but hopefully this will get you going again.

- Andrew

-- 

Complexity comes for free, simplicity you have to work for.