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https://gitlab.freedesktop.org/NetworkManager/NetworkManager
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bf86f51c9e
- `m4/ax_lib_readline.m4` was already aware of "$with_readline". Move the entire handling of the parameter inside the AX_LIB_READLINE macro. This lets our fork of ax_lib_readline.m4 further deviate from upstream version, but it's already so different that this is no new problem. - raise an error if the user requested --with-readline=libreadline|libedit but the library was not found. - only allow yes|no for --with-nmcli argument. But still default to "yes", which will always require one libreadline library to be detected. In particular, don't automatically disable nmcli if libreadline is not available, because building without nmcli should be an explicit choice. That is like before. - update the "$with_readline" variable for the "auto" case to reflect what was detected.
159 lines
5.5 KiB
Plaintext
159 lines
5.5 KiB
Plaintext
# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_lib_readline.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_LIB_READLINE
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#
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# DESCRIPTION
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#
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# Searches for a readline compatible library. If found, defines
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# `HAVE_LIBREADLINE'. If the found library has the `add_history' function,
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# sets also `HAVE_READLINE_HISTORY'. Also checks for the locations of the
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# necessary include files and sets `HAVE_READLINE_H' or
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# `HAVE_READLINE_READLINE_H' and `HAVE_READLINE_HISTORY_H' or
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# 'HAVE_HISTORY_H' if the corresponding include files exists.
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#
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# The libraries that may be readline compatible are `libedit',
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# `libeditline' and `libreadline'. Sometimes we need to link a termcap
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# library for readline to work, this macro tests these cases too by trying
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# to link with `libtermcap', `libcurses' or `libncurses' before giving up.
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#
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# Here is an example of how to use the information provided by this macro
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# to perform the necessary includes or declarations in a C file:
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#
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# #ifdef HAVE_LIBREADLINE
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# # if defined(HAVE_READLINE_READLINE_H)
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# # include <readline/readline.h>
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# # elif defined(HAVE_READLINE_H)
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# # include <readline.h>
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# # else /* !defined(HAVE_READLINE_H) */
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# extern char *readline ();
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# # endif /* !defined(HAVE_READLINE_H) */
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# char *cmdline = NULL;
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# #else /* !defined(HAVE_READLINE_READLINE_H) */
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# /* no readline */
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# #endif /* HAVE_LIBREADLINE */
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#
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# #ifdef HAVE_READLINE_HISTORY
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# # if defined(HAVE_READLINE_HISTORY_H)
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# # include <readline/history.h>
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# # elif defined(HAVE_HISTORY_H)
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# # include <history.h>
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# # else /* !defined(HAVE_HISTORY_H) */
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# extern void add_history ();
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# extern int write_history ();
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# extern int read_history ();
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# # endif /* defined(HAVE_READLINE_HISTORY_H) */
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# /* no history */
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# #endif /* HAVE_READLINE_HISTORY */
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#
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# LICENSE
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#
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# Copyright (c) 2008 Ville Laurikari <vl@iki.fi>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 8
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AU_ALIAS([VL_LIB_READLINE], [AX_LIB_READLINE])
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AC_DEFUN([AX_LIB_READLINE], [
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AC_ARG_WITH(readline,
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AS_HELP_STRING([--with-readline=auto|libreadline|libedit|none], [Using libreadline (auto) or libedit]),
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[],
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[with_readline=auto])
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if test "$with_readline" != "none"; then
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AC_CACHE_CHECK([for a readline compatible library],
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ax_cv_lib_readline, [
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ORIG_LIBS="$LIBS"
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if test "$with_readline" = "libreadline"; then
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search_readlines="readline"
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elif test "$with_readline" = "libedit"; then
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search_readlines="edit"
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elif test "$with_readline" = "auto"; then
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search_readlines="readline edit"
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else
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AC_MSG_ERROR([invalid --with-readline option. Valid options are --with-readline=auto|libreadline|libedit|none])
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fi
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for readline_lib in $search_readlines; do
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# prefer ncurses since we use it for nmtui too
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for termcap_lib in "" termcap curses ncurses; do
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if test -z "$termcap_lib"; then
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TRY_LIB="-l$readline_lib"
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else
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TRY_LIB="-l$readline_lib -l$termcap_lib"
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fi
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LIBS="$ORIG_LIBS $TRY_LIB"
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AC_LINK_IFELSE([AC_LANG_CALL([], [readline])], [ax_cv_lib_readline="$TRY_LIB"])
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if test -n "$ax_cv_lib_readline"; then
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break
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fi
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done
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if test -n "$ax_cv_lib_readline"; then
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if test "$with_readline" = auto; then
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if test "$readline_lib" = readline; then
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with_readline=libreadline
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else
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with_readline=libedit
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fi
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fi
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break
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fi
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done
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if test -z "$ax_cv_lib_readline"; then
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if test "$with_readline" != auto; then
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AC_MSG_ERROR([libreadline not found for --with-readline=$with_readline"])
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fi
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with_readline=none
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ax_cv_lib_readline="no"
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fi
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LIBS="$ORIG_LIBS"
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])
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if test "$ax_cv_lib_readline" != "no"; then
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READLINE_LIBS="$ax_cv_lib_readline"
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AC_SUBST(READLINE_LIBS)
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AC_DEFINE(HAVE_LIBREADLINE, 1,
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[Define if you have a readline compatible library])
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if test "$with_readline" = "libedit"; then
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AC_DEFINE(HAVE_EDITLINE_READLINE, 1,
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[Explicitly set to 1 when libedit shall be used])
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else
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AC_DEFINE(HAVE_EDITLINE_READLINE, 0,
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[By default the libreadline is used as readline library])
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fi
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ORIG_LIBS="$LIBS"
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LIBS="$ORIG_LIBS $ax_cv_lib_readline"
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AC_CACHE_CHECK([whether readline supports history],
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ax_cv_lib_readline_history, [
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ax_cv_lib_readline_history="no"
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AC_LINK_IFELSE([AC_LANG_CALL([], [history_set_history_state])],
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[ax_cv_lib_readline_history="yes"])
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])
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LIBS=$ORIG_LIBS
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if test "$ax_cv_lib_readline_history" = "yes"; then
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AC_DEFINE(HAVE_READLINE_HISTORY, 1,
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[Define if your readline library has \`history_set_history_state'])
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AC_CHECK_HEADERS(readline/history.h histedit.h)
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else
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AC_DEFINE(HAVE_READLINE_HISTORY, 0,
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[Explicitly set to 0 when libreadline shall not be used])
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fi
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fi
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fi
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])dnl
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