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PCRE_OBJ=""
AC_SUBST(PCRE_OBJ)
AC_SUBST(PCRE_LIBS)
AC_SUBST(PCRE_CFLAGS)
PKG_CHECK_MODULES(PCRE, libpcre)
PKG_CHECK_EXISTS(libpcre >= 7,
[AC_MSG_NOTICE([PCRE version is 7 or higher])],
[AC_MSG_NOTICE([PCRE version is below 7])
AC_DEFINE([HAVE_LIBPCRE_LESSER_THAN_7],
1,
[Define if libpcre version is less than 7])])
AC_CHECK_HEADERS(pcre.h)
AC_CHECK_LIB(pcre, pcre_compile, [ PCRE_LIBS="-lpcre" ], [AC_MSG_ERROR([PCRE is required])])
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