25 lines
800 B
Diff
25 lines
800 B
Diff
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--- configure.in
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+++ configure.in
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@@ -3153,9 +3153,18 @@ then
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fi
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# check for readline 4.0
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-AC_CHECK_LIB(readline, rl_pre_input_hook,
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- AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1,
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- [Define if you have readline 4.0]), , )
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+AC_MSG_CHECKING([for rl_pre_input_hook in -lreadline])
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+AC_CACHE_VAL(ac_cv_have_rl_re_input_hook, [
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+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>
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+#include <readline/readline.h>],
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+ [return rl_pre_input_hook != 0])],
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+ ac_cv_have_rl_re_input_hook=yes,
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+ ac_cv_have_rl_re_input_hook=no)])
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+AC_MSG_RESULT($ac_cv_have_rl_re_input_hook)
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+if test "$ac_cv_have_rl_re_input_hook" = yes; then
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+ AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1,
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+ [Define if you have readline 4.0])
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+fi
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# check for readline 4.2
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AC_CHECK_LIB(readline, rl_completion_matches,
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