root/m4.include/mc-check-search-type.m4

/*   */

dnl @synopsis mc_CHECK_SEARCH_TYPE
dnl
dnl Check search type in mc. Currently used glib-regexp or pcre
dnl
dnl @author Slava Zanko <slavazanko@gmail.com>
dnl @author Andrew Borodin <aborodin@vmail.ru>
dnl @version 2023-03-22
dnl @license GPL
dnl @copyright Free Software Foundation, Inc.
 
AC_DEFUN([mc_CHECK_SEARCH_TYPE_PCRE],[
    AX_PATH_LIB_PCRE
 
    if test x"${PCRE_LIBS}" = x; then
        AC_MSG_ERROR([$1])
    fi
 
    SEARCH_TYPE="pcre"
])
 
AC_DEFUN([mc_CHECK_SEARCH_TYPE_PCRE2],[
    AX_CHECK_PCRE2([8], [], [:])
 
    if test $pcre2_cv_libpcre2 = yes; then
        SEARCH_TYPE="pcre2"
    else
        dnl pcre2 not found -- try pcre
        AC_MSG_WARN([Cannot find pcre2 library, trying pcre one...])
        mc_CHECK_SEARCH_TYPE_PCRE([$1])
    fi
])
 
 
AC_DEFUN([mc_CHECK_SEARCH_TYPE],[
 
    AC_ARG_WITH([search-engine],
        AS_HELP_STRING([--with-search-engine=type],
        [Select low-level search engine @<:@glib|pcre|pcre2@:>@])
      )
 
    case x$with_search_engine in
    xglib)
        SEARCH_TYPE="glib-regexp"
        ;;
    xpcre)
        mc_CHECK_SEARCH_TYPE_PCRE([Cannot find pcre library])
        ;;
    xpcre2)
        mc_CHECK_SEARCH_TYPE_PCRE2([Neither pcre2 nor pcre library found!])
        ;;
    x)
        SEARCH_TYPE="glib-regexp"
        ;;
    *)
        AC_MSG_ERROR([Value of the search-engine is incorrect])
        ;;
    esac
 
    if test x"$SEARCH_TYPE" = x"glib-regexp"; then
        AC_DEFINE(SEARCH_TYPE_GLIB, 1, [Define to select 'glib-regexp' search type])
    else
        AC_DEFINE(SEARCH_TYPE_PCRE, 1, [Define to select 'pcre2' or 'pcre' search type])
    fi
])

/*   */