Re: undefined reference to `pcre_jit_exec'

> On Thu, Oct 12, 2017 at 04:06:11PM -0400, Jeffrey Walton wrote:
>
>> I have a script to build Git on some old platforms to ease testing.
>> Old platforms include CentOS 5. The script is available at
>> https://github.com/noloader/Build-Scripts/blob/master/build-ssh.sh.
>>
>> It looks like something got knocked loose recently. I'm seeing several
>> of these when building with PCRE 8.41 with Git 2.14.2. Old and new
>> platforms are witnessing it. I observe it on CentOS 5 with GCC 4.1;
>> and Fedora 26 with GCC 7.2.
>>
>>     ...
>>     LINK git-credential-store
>> libgit.a(grep.o): In function `pcre1match':
>> grep.c:(.text+0x1219): undefined reference to `pcre_jit_exec'
>> collect2: error: ld returned 1 exit status
>> make: *** [Makefile:2145: git-credential-store] Error 1
>
> Maybe:
>
>   $ git grep -h -B5 -A1 pcre_jit Makefile
>   # When using USE_LIBPCRE1, define NO_LIBPCRE1_JIT if the PCRE v1
>   # library is compiled without --enable-jit. We will auto-detect
>   # whether the version of the PCRE v1 library in use has JIT support at
>   # all, but we unfortunately can't auto-detect whether JIT support
>   # hasn't been compiled in in an otherwise JIT-supporting version. If
>   # you have link-time errors about a missing `pcre_jit_exec` define
>   # this, or recompile PCRE v1 with --enable-jit.