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Merge of r4961: configure: better check for PCRE JIT.
On Mac OS X system toolchain by default prefers include files
from /usr/local/include, but libraries from /usr/lib. This might result in
various problems, in particular the one outlined below.
If the PCRE library is installed into /usr/local/, this results in pcre.h
being used from /usr/local/include (with PCRE_CONFIG_JIT defined), but
libpcre from /usr/lib (as shipped with the OS, without pcre_free_study()
symbol). As a result build fails as we use pcre_free_study() function
if we try to compile with PCRE JIT support.
Obvious workaround to the root cause is to ask compiler to prefer
library from /usr/local/lib via ./configure --with-ld-opt="-L/usr/local/lib".
On the other hand, in any case it would be good to check if the function
we are going to use is available, hence the change.
See thread here for details:
http://mailman.nginx.org/pipermail/nginx-devel/2012-December/003074.html
Prodded by Piotr Sikora.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Sun, 10 Feb 2013 03:18:08 +0000 |
parents | d620f497c50f |
children | 434548349838 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for $ngx_lib ...$ngx_c" cat << END >> $NGX_AUTOCONF_ERR ---------------------------------------- checking for $ngx_lib END ngx_found=no cat << END > $NGX_AUTOTEST.c $ngx_lib_incs int main() { $ngx_lib_test; return 0; } eval "$CC $cc_test_flags $ngx_lib_cflags \ -o $NGX_AUTOTEST $NGX_AUTOTEST.c $ngx_libs \ >> $NGX_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then echo " found" ngx_found=yes else echo " not found" fi rm $NGX_AUTOTEST*