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.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


CFLAGS =	-c -zq -bt=nt -ot -op -oi -oe -s -bm $(CPU_OPT)
PCREFLAGS =	-DHAVE_CONFIG_H -DPCRE_STATIC -DPOSIX_MALLOC_THRESHOLD=10


pcre.lib:
	cd $(PCRE)

	wcl386 $(CFLAGS) -i=. $(PCREFLAGS) pcre_*.c

	dir /b *.obj > pcre.lst

	wlib -n pcre.lib @pcre.lst

pcre.h:
	cd $(PCRE)

	copy /y pcre.h.generic pcre.h
	copy /y config.h.generic config.h
	copy /y pcre_chartables.c.dist pcre_chartables.c