contrib: don't trust pkg-config for pcre on OSX

Refs #56954

Change-Id: I1db4fe3ae0e011562b551efd1808cb7aec3490e1

daemon/contrib/src/pcre/rules.mak

@@ -4,9 +4,13 @@ PCRE_VERSION := 8.35
 PCRE_URL := ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-$(PCRE_VERSION).tar.bz2
 
 PKGS += pcre
+
+# OS X ships with improperly packaged libpcre, so we can't rely on pkg-config
+ifndef HAVE_MACOSX
 ifeq ($(call need_pkg,"libpcre"),)
 PKGS_FOUND += pcre
 endif
+endif
 
 $(TARBALLS)/pcre-$(PCRE_VERSION).tar.bz2:
 	$(call download,$(PCRE_URL))