From 8ae9e7903fb26771068896d9b301f275e50053b9 Mon Sep 17 00:00:00 2001 From: Maxim Dounin Date: Wed, 12 Dec 2012 13:50:07 +0000 Subject: [PATCH] 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 is 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. --- auto/lib/pcre/conf | 1 + 1 file changed, 1 insertion(+) diff --git a/auto/lib/pcre/conf b/auto/lib/pcre/conf index 6a8c326c4..345860053 100644 --- a/auto/lib/pcre/conf +++ b/auto/lib/pcre/conf @@ -172,6 +172,7 @@ else ngx_feature="PCRE JIT support" ngx_feature_name="NGX_HAVE_PCRE_JIT" ngx_feature_test="int jit = 0; + pcre_free_study(NULL); pcre_config(PCRE_CONFIG_JIT, &jit); if (jit != 1) return 1;" . auto/feature -- 2.47.3