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23e7fa38 VB |
1 | # =========================================================================== |
2 | # http://www.gnu.org/software/autoconf-archive/ax_lib_readline.html | |
3 | # =========================================================================== | |
4 | # | |
5 | # SYNOPSIS | |
6 | # | |
7 | # AX_LIB_READLINE | |
8 | # | |
9 | # DESCRIPTION | |
10 | # | |
11 | # Searches for a readline compatible library. If found, defines | |
12 | # `HAVE_LIBREADLINE'. If the found library has the `add_history' function, | |
13 | # sets also `HAVE_READLINE_HISTORY'. Also checks for the locations of the | |
14 | # necessary include files and sets `HAVE_READLINE_H' or | |
15 | # `HAVE_READLINE_READLINE_H' and `HAVE_READLINE_HISTORY_H' or | |
16 | # 'HAVE_HISTORY_H' if the corresponding include files exists. | |
17 | # | |
18 | # The libraries that may be readline compatible are `libedit', | |
19 | # `libeditline' and `libreadline'. Sometimes we need to link a termcap | |
20 | # library for readline to work, this macro tests these cases too by trying | |
21 | # to link with `libtermcap', `libcurses' or `libncurses' before giving up. | |
22 | # | |
23 | # Here is an example of how to use the information provided by this macro | |
24 | # to perform the necessary includes or declarations in a C file: | |
25 | # | |
26 | # #ifdef HAVE_LIBREADLINE | |
27 | # # if defined(HAVE_READLINE_READLINE_H) | |
28 | # # include <readline/readline.h> | |
29 | # # elif defined(HAVE_READLINE_H) | |
30 | # # include <readline.h> | |
31 | # # else /* !defined(HAVE_READLINE_H) */ | |
32 | # extern char *readline (); | |
35f6f4fb | 33 | # extern int rl_insert_text(const char*); |
35f6f4fb VB |
34 | # extern void rl_forced_update_display(void); |
35 | # extern int rl_bind_key(int, int(*f)(int, int)); | |
23e7fa38 VB |
36 | # # endif /* !defined(HAVE_READLINE_H) */ |
37 | # char *cmdline = NULL; | |
38 | # #else /* !defined(HAVE_READLINE_READLINE_H) */ | |
39 | # /* no readline */ | |
40 | # #endif /* HAVE_LIBREADLINE */ | |
41 | # | |
42 | # #ifdef HAVE_READLINE_HISTORY | |
43 | # # if defined(HAVE_READLINE_HISTORY_H) | |
44 | # # include <readline/history.h> | |
45 | # # elif defined(HAVE_HISTORY_H) | |
46 | # # include <history.h> | |
47 | # # else /* !defined(HAVE_HISTORY_H) */ | |
48 | # extern void add_history (); | |
49 | # extern int write_history (); | |
50 | # extern int read_history (); | |
51 | # # endif /* defined(HAVE_READLINE_HISTORY_H) */ | |
52 | # /* no history */ | |
53 | # #endif /* HAVE_READLINE_HISTORY */ | |
54 | # | |
55 | # LICENSE | |
56 | # | |
57 | # Copyright (c) 2008 Ville Laurikari <vl@iki.fi> | |
58 | # | |
59 | # Copying and distribution of this file, with or without modification, are | |
60 | # permitted in any medium without royalty provided the copyright notice | |
61 | # and this notice are preserved. This file is offered as-is, without any | |
62 | # warranty. | |
63 | ||
35f6f4fb VB |
64 | # Modified version. Original version is available here: |
65 | # http://www.gnu.org/software/autoconf-archive/ax_lib_readline.html | |
66 | ||
23e7fa38 VB |
67 | #serial 6 |
68 | ||
69 | AU_ALIAS([VL_LIB_READLINE], [AX_LIB_READLINE]) | |
70 | AC_DEFUN([AX_LIB_READLINE], [ | |
71 | AC_CACHE_CHECK([for a readline compatible library], | |
72 | ax_cv_lib_readline, [ | |
73 | _save_LIBS="$LIBS" | |
74 | for readline_lib in readline edit editline; do | |
75 | for termcap_lib in "" termcap curses ncurses; do | |
76 | if test -z "$termcap_lib"; then | |
77 | TRY_LIB="-l$readline_lib" | |
78 | else | |
79 | TRY_LIB="-l$readline_lib -l$termcap_lib" | |
80 | fi | |
81 | LIBS="$ORIG_LIBS $TRY_LIB" | |
07f2c567 | 82 | for readline_func in readline rl_insert_text rl_forced_update_display; do |
35f6f4fb VB |
83 | AC_TRY_LINK_FUNC($readline_func, ax_cv_lib_readline="$TRY_LIB", ax_cv_lib_readline="") |
84 | if test -z "$ax_cv_lib_readline"; then | |
85 | break | |
86 | fi | |
87 | done | |
23e7fa38 VB |
88 | if test -n "$ax_cv_lib_readline"; then |
89 | break | |
90 | fi | |
91 | done | |
92 | if test -n "$ax_cv_lib_readline"; then | |
93 | break | |
94 | fi | |
95 | done | |
96 | if test -z "$ax_cv_lib_readline"; then | |
97 | ax_cv_lib_readline="no" | |
98 | fi | |
99 | LIBS="$_save_LIBS" | |
100 | ]) | |
101 | ||
102 | if test "$ax_cv_lib_readline" != "no"; then | |
103 | READLINE_LIBS="$ax_cv_lib_readline" | |
104 | AC_SUBST(READLINE_LIBS) | |
105 | ||
106 | _save_LIBS="$LIBS" | |
107 | LIBS="$LIBS $READLINE_LIBS" | |
108 | AC_DEFINE(HAVE_LIBREADLINE, 1, | |
109 | [Define if you have a readline compatible library]) | |
110 | AC_CHECK_HEADERS(readline.h readline/readline.h) | |
111 | AC_CACHE_CHECK([whether readline supports history], | |
112 | ax_cv_lib_readline_history, [ | |
113 | ax_cv_lib_readline_history="no" | |
114 | AC_TRY_LINK_FUNC(add_history, ax_cv_lib_readline_history="yes") | |
115 | ]) | |
116 | if test "$ax_cv_lib_readline_history" = "yes"; then | |
117 | AC_DEFINE(HAVE_READLINE_HISTORY, 1, | |
118 | [Define if your readline library has \`add_history']) | |
119 | AC_CHECK_HEADERS(history.h readline/history.h) | |
120 | fi | |
121 | ||
122 | LIBS="$_save_LIBS" | |
123 | fi | |
124 | ])dnl |