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build: ensure rl_echo_signal_char() exists in the readline library

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This commit is contained in:
Dan Williams 2014-10-14 14:30:44 -05:00
parent d5ceb0af15
commit b69143b508
1 changed files with 13 additions and 0 deletions
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13
m4/ax_lib_readline.m4
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@ -92,6 +92,8 @@ AC_DEFUN([AX_LIB_READLINE], [
LIBS="$LIBS $ax_cv_lib_readline"
AC_CHECK_HEADERS(readline.h readline/readline.h)
# Check history
AC_CACHE_CHECK([whether readline supports history],
ax_cv_lib_readline_history, [
ax_cv_lib_readline_history="no"
@ -101,6 +103,17 @@ AC_DEFUN([AX_LIB_READLINE], [
AC_MSG_ERROR(readline history support is required)
fi
AC_CHECK_HEADERS(history.h readline/history.h)
# check rl_echo_signal_char()
AC_CACHE_CHECK([whether readline supports rl_echo_signal_char()],
ax_cv_lib_readline_echo_signal_char, [
ax_cv_lib_readline_echo_signal_char="no"
AC_TRY_LINK_FUNC(rl_echo_signal_char, ax_cv_lib_readline_echo_signal_char="yes")
])
if test "$ax_cv_lib_readline_echo_signal_char" != "yes"; then
AC_MSG_ERROR(rl_echo_signal_char() is required (install readline6?))
fi
READLINE_LIBS="$ax_cv_lib_readline"
AC_SUBST(READLINE_LIBS)
])dnl