Bug 465640: Use autoconf to declare stdint types on platforms that don't have stdint.h r=bsmedberg
At configure time, check for <stdint.h>. If we don't have it, find
integer types of various sizes. On Windows, where we can't run
compilation tests in configure, hard-code definitions suggesting the
use of the built-in __intN types for the exact-size types, and
<stddef.h> for the pointer-sized types.
Use namespace-clean names for the preprocessor macros we define.
Since these types are used in the public JavaScript API, the configure
script needs to place the definitions it finds in js-config.h, the
installed configure-generated header, so it can be used by jsapi.h and
that gang.
New header js/src/jsstdint.h does what it takes to get definitions for
the exact-size and pointer-size integral types. It includes
<stdint.h> when available, uses the types found by configure.in to
define the {,u}int{8,16,32,64,ptr}_t types itself, or uses the __intN
types and the <stddef.h> header.
Remove now-unnecessary and possibly conflicting definitions of intN_t
types from js/src/nanojit/avmplus.h.
2009-01-13 21:50:24 +03:00
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dnl ***** BEGIN LICENSE BLOCK *****
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dnl Version: MPL 1.1/GPL 2.0/LGPL 2.1
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dnl
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dnl The contents of this file are subject to the Mozilla Public License Version
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dnl 1.1 (the "License"); you may not use this file except in compliance with
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dnl the License. You may obtain a copy of the License at
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dnl http://www.mozilla.org/MPL/
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dnl Software distributed under the License is distributed on an "AS IS" basis,
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dnl WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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dnl for the specific language governing rights and limitations under the
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dnl License.
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dnl
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dnl The Original Code is mozilla.org code.
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dnl
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dnl The Initial Developer of the Original Code is
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dnl The Mozilla Foundation
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dnl Portions created by the Initial Developer are Copyright (C) 2008
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dnl the Initial Developer. All Rights Reserved.
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dnl
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dnl Contributor(s):
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dnl Jim Blandy
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dnl
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dnl Alternatively, the contents of this file may be used under the terms of
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dnl either of the GNU General Public License Version 2 or later (the "GPL"),
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dnl or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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dnl in which case the provisions of the GPL or the LGPL are applicable instead
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dnl of those above. If you wish to allow use of your version of this file only
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dnl under the terms of either the GPL or the LGPL, and not to allow others to
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dnl use your version of this file under the terms of the MPL, indicate your
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dnl decision by deleting the provisions above and replace them with the notice
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dnl and other provisions required by the GPL or the LGPL. If you do not delete
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dnl the provisions above, a recipient may use your version of this file under
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dnl the terms of any one of the MPL, the GPL or the LGPL.
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dnl
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dnl ***** END LICENSE BLOCK *****
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2009-01-22 01:34:28 +03:00
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dnl MOZ_N_BYTE_TYPE(TYPENAME, SIZE, POSSIBLE-TYPES)
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Bug 465640: Use autoconf to declare stdint types on platforms that don't have stdint.h r=bsmedberg
At configure time, check for <stdint.h>. If we don't have it, find
integer types of various sizes. On Windows, where we can't run
compilation tests in configure, hard-code definitions suggesting the
use of the built-in __intN types for the exact-size types, and
<stddef.h> for the pointer-sized types.
Use namespace-clean names for the preprocessor macros we define.
Since these types are used in the public JavaScript API, the configure
script needs to place the definitions it finds in js-config.h, the
installed configure-generated header, so it can be used by jsapi.h and
that gang.
New header js/src/jsstdint.h does what it takes to get definitions for
the exact-size and pointer-size integral types. It includes
<stdint.h> when available, uses the types found by configure.in to
define the {,u}int{8,16,32,64,ptr}_t types itself, or uses the __intN
types and the <stddef.h> header.
Remove now-unnecessary and possibly conflicting definitions of intN_t
types from js/src/nanojit/avmplus.h.
2009-01-13 21:50:24 +03:00
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dnl
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dnl Check to see which of POSSIBLE-TYPES has a size of SIZE. If we
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2009-01-22 01:34:28 +03:00
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dnl find one, define TYPENAME to be the size-BYTE type. If no type
|
Bug 465640: Use autoconf to declare stdint types on platforms that don't have stdint.h r=bsmedberg
At configure time, check for <stdint.h>. If we don't have it, find
integer types of various sizes. On Windows, where we can't run
compilation tests in configure, hard-code definitions suggesting the
use of the built-in __intN types for the exact-size types, and
<stddef.h> for the pointer-sized types.
Use namespace-clean names for the preprocessor macros we define.
Since these types are used in the public JavaScript API, the configure
script needs to place the definitions it finds in js-config.h, the
installed configure-generated header, so it can be used by jsapi.h and
that gang.
New header js/src/jsstdint.h does what it takes to get definitions for
the exact-size and pointer-size integral types. It includes
<stdint.h> when available, uses the types found by configure.in to
define the {,u}int{8,16,32,64,ptr}_t types itself, or uses the __intN
types and the <stddef.h> header.
Remove now-unnecessary and possibly conflicting definitions of intN_t
types from js/src/nanojit/avmplus.h.
2009-01-13 21:50:24 +03:00
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dnl matches, exit the configure script with an error message. Types
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dnl whose written form contains spaces should appear in POSSIBLE-TYPES
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dnl enclosed by shell quotes.
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dnl
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2009-01-22 01:34:28 +03:00
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dnl The cache variable moz_cv_n_byte_type_TYPENAME gets set to the
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Bug 465640: Use autoconf to declare stdint types on platforms that don't have stdint.h r=bsmedberg
At configure time, check for <stdint.h>. If we don't have it, find
integer types of various sizes. On Windows, where we can't run
compilation tests in configure, hard-code definitions suggesting the
use of the built-in __intN types for the exact-size types, and
<stddef.h> for the pointer-sized types.
Use namespace-clean names for the preprocessor macros we define.
Since these types are used in the public JavaScript API, the configure
script needs to place the definitions it finds in js-config.h, the
installed configure-generated header, so it can be used by jsapi.h and
that gang.
New header js/src/jsstdint.h does what it takes to get definitions for
the exact-size and pointer-size integral types. It includes
<stdint.h> when available, uses the types found by configure.in to
define the {,u}int{8,16,32,64,ptr}_t types itself, or uses the __intN
types and the <stddef.h> header.
Remove now-unnecessary and possibly conflicting definitions of intN_t
types from js/src/nanojit/avmplus.h.
2009-01-13 21:50:24 +03:00
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dnl type, if found.
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dnl
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dnl for example:
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dnl MOZ_N_BYTE_TYPE([JS_INT32_T], [4], [int long 'long long' short])
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dnl
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AC_DEFUN(MOZ_N_BYTE_TYPE,
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[
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dnl The simplest approach would simply be to run a program that says
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dnl printf ("%d\n", sizeof ($type));
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dnl But that won't work when cross-compiling; this will.
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AC_CACHE_CHECK([for a $2-byte type], moz_cv_n_byte_type_$1, [
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moz_cv_n_byte_type_$1=
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for type in $3; do
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AC_TRY_COMPILE([],
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[
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int a[sizeof ($type) == $2 ? 1 : -1];
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return;
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],
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[moz_cv_n_byte_type_$1=$type; break], [])
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done
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if ! test "$moz_cv_n_byte_type_$1"; then
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AC_MSG_ERROR([Couldn't find a $2-byte type])
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fi
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])
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AC_DEFINE_UNQUOTED($1, [$moz_cv_n_byte_type_$1],
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[a $2-byte type on the target machine])
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])
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