Mercurial > gnulib
view m4/readline.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
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# readline.m4 serial 10 dnl Copyright (C) 2005-2006, 2009-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Simon Josefsson, with help from Bruno Haible and Oskar dnl Liljeblad. AC_DEFUN([gl_FUNC_READLINE], [ dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) AC_REQUIRE([AC_LIB_RPATH]) dnl Search for libreadline and define LIBREADLINE, LTLIBREADLINE and dnl INCREADLINE accordingly. AC_LIB_LINKFLAGS_BODY([readline]) dnl Add $INCREADLINE to CPPFLAGS before performing the following checks, dnl because if the user has installed libreadline and not disabled its use dnl via --without-libreadline-prefix, he wants to use it. The AC_LINK_IFELSE dnl will then succeed. am_save_CPPFLAGS="$CPPFLAGS" AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCREADLINE]) AC_CACHE_CHECK([for readline], [gl_cv_lib_readline], [ gl_cv_lib_readline=no am_save_LIBS="$LIBS" dnl On some systems, -lreadline doesn't link without an additional dnl -lncurses or -ltermcap. dnl Try -lncurses before -ltermcap, because libtermcap is insecure dnl by design and obsolete since 1994. Try -lcurses last, because dnl libcurses is unusable on some old Unices. for extra_lib in "" ncurses termcap curses; do LIBS="$am_save_LIBS $LIBREADLINE" if test -n "$extra_lib"; then LIBS="$LIBS -l$extra_lib" fi AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h> #include <readline/readline.h>]], [[readline((char*)0);]])], [if test -n "$extra_lib"; then gl_cv_lib_readline="yes, requires -l$extra_lib" else gl_cv_lib_readline="yes" fi ]) if test "$gl_cv_lib_readline" != no; then break fi done LIBS="$am_save_LIBS" ]) if test "$gl_cv_lib_readline" != no; then AC_DEFINE([HAVE_READLINE], [1], [Define if you have the readline library.]) extra_lib=`echo "$gl_cv_lib_readline" | sed -n -e 's/yes, requires //p'` if test -n "$extra_lib"; then LIBREADLINE="$LIBREADLINE $extra_lib" LTLIBREADLINE="$LTLIBREADLINE $extra_lib" fi AC_MSG_CHECKING([how to link with libreadline]) AC_MSG_RESULT([$LIBREADLINE]) else dnl If $LIBREADLINE didn't lead to a usable library, we don't dnl need $INCREADLINE either. CPPFLAGS="$am_save_CPPFLAGS" LIBREADLINE= LTLIBREADLINE= fi AC_SUBST([LIBREADLINE]) AC_SUBST([LTLIBREADLINE]) AC_CHECK_HEADERS([readline/readline.h readline/history.h]) ]) # Prerequisites of lib/readline.c. AC_DEFUN([gl_PREREQ_READLINE], [ : ])