AC_SUBST(PCRE_LIBS)
AC_SUBST(PCRE_CFLAGS)

PKG_CHECK_MODULES([PCRE], [libpcre], [found_libpcre=yes], [found_libpcre=no])
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])])

SSS_AC_EXPAND_LIB_DIR()
AS_IF([test x"$found_libpcre" != xyes],
    [AC_CHECK_HEADERS([pcre.h],
        [AC_CHECK_LIB([pcre],
                      [pcre_compile],
                      [PCRE_LIBS="-L$sss_extra_libdir -lpcre"],
                      [AC_MSG_ERROR([No usable PCRE library found])],
                      [-L$sss_extra_libdir])],
        [AC_MSG_ERROR([pcre header files are not installed])])]
)