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107 lines
3.8 KiB
107 lines
3.8 KiB
# =========================================================================== |
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# http://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 6 |
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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_CACHE_CHECK([for a readline compatible library], |
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ax_cv_lib_readline, [ |
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ORIG_LIBS="$LIBS" |
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for readline_lib in readline edit editline; do |
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for termcap_lib in "" termcap curses ncurses; do |
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if test -z "$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 $TRY_LIB" |
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AC_TRY_LINK_FUNC(readline, ax_cv_lib_readline="$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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break |
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fi |
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done |
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if test -z "$ax_cv_lib_readline"; then |
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ax_cv_lib_readline="no" |
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fi |
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LIBS="$ORIG_LIBS" |
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]) |
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if test "$ax_cv_lib_readline" != "no"; then |
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LIBS="$LIBS $ax_cv_lib_readline" |
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AC_DEFINE(HAVE_LIBREADLINE, 1, |
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[Define if you have a readline compatible library]) |
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AC_CHECK_HEADERS(readline.h readline/readline.h) |
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AC_CACHE_CHECK([whether readline supports history], |
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ax_cv_lib_readline_history, [ |
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ax_cv_lib_readline_history="no" |
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AC_TRY_LINK_FUNC(add_history, ax_cv_lib_readline_history="yes") |
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]) |
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if test "$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 \`add_history']) |
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AC_CHECK_HEADERS(history.h readline/history.h) |
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fi |
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fi |
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])dnl
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