1# configure.ac for libdecnumber -*- Autoconf -*- 2# Process this file with autoconf to generate a configuration script. 3 4# Copyright 2005, 2006, 2009 Free Software Foundation, Inc. 5 6# This file is part of GCC. 7 8# GCC is free software; you can redistribute it and/or modify it under 9# the terms of the GNU General Public License as published by the Free 10# Software Foundation; either version 3, or (at your option) any 11# later #version. 12 13# GCC is distributed in the hope that it will be useful, but WITHOUT 14# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16# License #for more details. 17 18# You should have received a copy of the GNU General Public License 19# along with GCC; see the file COPYING3. If not see 20# <http://www.gnu.org/licenses/>. 21 22AC_PREREQ(2.64) 23AC_INIT(libdecnumber, [ ], gcc-bugs@gcc.gnu.org, libdecnumber) 24AC_CONFIG_SRCDIR(decNumber.h) 25AC_CONFIG_MACRO_DIR(../config) 26 27# Checks for programs. 28AC_PROG_MAKE_SET 29AC_PROG_CC 30AC_PROG_RANLIB 31 32MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing 33AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal]) 34AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf]) 35AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader]) 36 37# Figure out what compiler warnings we can enable. 38# See config/warnings.m4 for details. 39 40ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \ 41 -Wmissing-prototypes -Wold-style-definition \ 42 -Wmissing-format-attribute -Wcast-qual]) 43ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long]) 44 45# Only enable with --enable-werror-always until existing warnings are 46# corrected. 47ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual]) 48 49# Checks for header files. 50AC_CHECK_HEADERS(ctype.h stddef.h string.h stdio.h) 51GCC_HEADER_STDINT(gstdint.h) 52 53# Checks for typedefs, structures, and compiler characteristics. 54AC_C_CONST 55AC_TYPE_OFF_T 56AC_CHECK_SIZEOF(int) 57AC_CHECK_SIZEOF(long) 58 59# Checks for library functions. 60AC_HEADER_STDC 61 62AC_ARG_ENABLE(maintainer-mode, 63[ --enable-maintainer-mode enable rules only needed by maintainers],, 64enable_maintainer_mode=no) 65 66if test "x$enable_maintainer_mode" = xno; then 67 MAINT='#' 68else 69 MAINT= 70fi 71AC_SUBST(MAINT) 72 73AC_CANONICAL_TARGET 74 75# Default decimal format 76# If you change the defaults here, be sure to change them in the GCC directory also 77AC_MSG_CHECKING([for decimal floating point]) 78AC_ARG_ENABLE(decimal-float, 79[ --enable-decimal-float={no,yes,bid,dpd} 80 enable decimal float extension to C. Selecting 'bid' 81 or 'dpd' choses which decimal floating point format 82 to use], 83[ 84 case $enable_decimal_float in 85 yes | no | bid | dpd) ;; 86 *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. 87Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; 88 esac 89], 90[ 91 case $target in 92 powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*) 93 enable_decimal_float=yes 94 ;; 95 *) 96 enable_decimal_float=no 97 ;; 98 esac 99]) 100 101# x86's use BID format instead of DPD 102# In theory --enable-decimal-float=no should not compile anything 103# For the sake of simplicity, just use the default format in this directory 104if test x$enable_decimal_float = xyes -o x$enable_decimal_float = xno; then 105 case $target in 106 i?86*-*-linux* | x86_64*-*-linux*) 107 enable_decimal_float=bid 108 ;; 109 *) 110 enable_decimal_float=dpd 111 ;; 112 esac 113fi 114 115# If BID is being used, additional objects should be linked in. 116if test x$enable_decimal_float = xbid; then 117 ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(bid_OBJS)" 118else 119 ADDITIONAL_OBJS= 120fi 121 122AC_MSG_RESULT($enable_decimal_float) 123AC_SUBST(enable_decimal_float) 124AC_SUBST(ADDITIONAL_OBJS) 125 126AC_C_BIGENDIAN 127 128# Output. 129 130AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1]) 131AC_CONFIG_FILES(Makefile) 132AC_OUTPUT 133