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1 | # configure.ac for libdecnumber -*- Autoconf -*- |
2 | # Process this file with autoconf to generate a configuration script. | |
3 | ||
4 | # Copyright 2005, 2006 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 2, 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 COPYING. If not, write to the Free | |
20 | # Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA | |
21 | # 02110-1301, USA. | |
22 | ||
23 | AC_PREREQ(2.59) | |
24 | AC_INIT(libdecnumber, [ ], gcc-bugs@gcc.gnu.org, libdecnumber) | |
25 | AC_CONFIG_SRCDIR(decNumber.h) | |
26 | AC_CONFIG_MACRO_DIR(../config) | |
27 | ||
28 | # Checks for programs. | |
29 | AC_PROG_MAKE_SET | |
30 | AC_PROG_CC | |
31 | AC_PROG_RANLIB | |
32 | ||
33 | MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing | |
34 | AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal]) | |
35 | AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf]) | |
36 | AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader]) | |
37 | ||
38 | # Figure out what compiler warnings we can enable. | |
39 | # See config/warnings.m4 for details. | |
40 | ||
41 | ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \ | |
42 | -Wmissing-prototypes -Wold-style-definition \ | |
43 | -Wmissing-format-attribute -Wcast-qual]) | |
44 | ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long]) | |
45 | ||
46 | # Only enable with --enable-werror-always until existing warnings are | |
47 | # corrected. | |
48 | ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual]) | |
49 | ||
50 | # Checks for header files. | |
51 | AC_CHECK_HEADERS(ctype.h stddef.h string.h stdio.h) | |
52 | GCC_HEADER_STDINT(gstdint.h) | |
53 | ||
54 | # Checks for typedefs, structures, and compiler characteristics. | |
55 | AC_C_CONST | |
56 | AC_TYPE_OFF_T | |
57 | AC_CHECK_SIZEOF(int) | |
58 | AC_CHECK_SIZEOF(long) | |
59 | ||
60 | # Checks for library functions. | |
61 | AC_HEADER_STDC | |
62 | ||
63 | AC_ARG_ENABLE(maintainer-mode, | |
64 | [ --enable-maintainer-mode enable rules only needed by maintainers],, | |
65 | enable_maintainer_mode=no) | |
66 | ||
67 | if test "x$enable_maintainer_mode" = xno; then | |
68 | MAINT='#' | |
69 | else | |
70 | MAINT= | |
71 | fi | |
72 | AC_SUBST(MAINT) | |
73 | ||
74 | AC_CANONICAL_TARGET | |
75 | ||
76 | # Default decimal format | |
77 | # If you change the defaults here, be sure to change them in the GCC directory also | |
78 | AC_MSG_CHECKING([for decimal floating point]) | |
79 | AC_ARG_ENABLE(decimal-float, | |
80 | [ --enable-decimal-float={no,yes,bid,dpd} | |
81 | enable decimal float extension to C. Selecting 'bid' | |
82 | or 'dpd' choses which decimal floating point format | |
83 | to use], | |
84 | [ | |
85 | case $enable_decimal_float in | |
86 | yes | no | bid | dpd) ;; | |
87 | *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. | |
88 | Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; | |
89 | esac | |
90 | ], | |
91 | [ | |
92 | case $target in | |
93 | powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*) | |
94 | enable_decimal_float=yes | |
95 | ;; | |
96 | *) | |
97 | enable_decimal_float=no | |
98 | ;; | |
99 | esac | |
100 | ]) | |
101 | ||
102 | # x86's use BID format instead of DPD | |
103 | # In theory --enable-decimal-float=no should not compile anything | |
104 | # For the sake of simplicity, just use the default format in this directory | |
105 | if test x$enable_decimal_float = xyes -o x$enable_decimal_float = xno; then | |
106 | case $target in | |
107 | i?86*-*-linux* | x86_64*-*-linux*) | |
108 | enable_decimal_float=bid | |
109 | ;; | |
110 | *) | |
111 | enable_decimal_float=dpd | |
112 | ;; | |
113 | esac | |
114 | fi | |
115 | ||
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116 | # If BID is being used, additional objects should be linked in. |
117 | if test x$enable_decimal_float = xbid; then | |
118 | ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(bid_OBJS)" | |
119 | else | |
120 | ADDITIONAL_OBJS= | |
121 | fi | |
122 | ||
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123 | AC_MSG_RESULT($enable_decimal_float) |
124 | AC_SUBST(enable_decimal_float) | |
8f3bca32 | 125 | AC_SUBST(ADDITIONAL_OBJS) |
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126 | |
127 | AC_C_BIGENDIAN | |
128 | ||
129 | # Output. | |
130 | ||
131 | AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1]) | |
132 | AC_CONFIG_FILES(Makefile) | |
133 | AC_OUTPUT |