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[devel] Added appropriate feature test macros (_POSIX_SOURCE, _ISOC99_SOURCE)

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to ensure libpng sees the correct API.
This commit is contained in:
Glenn Randers-Pehrson 2011-05-03 22:30:19 -05:00
parent 1384c048e4
commit b3b7168077
5 changed files with 32 additions and 3 deletions
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9
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.5.3beta05 - April 29, 2011
Libpng 1.5.3beta05 - May 4, 2011
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -76,7 +76,12 @@ Version 1.5.3beta04 [April 27, 2011]
Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
avoid a clash with the png_jmpbuf macro on some platforms.
Version 1.5.3beta05 [April 29, 2011]
Version 1.5.3beta05 [May 4, 2011]
Added appropriate feature test macros to ensure libpng sees the correct API
_POSIX_SOURCE is defined in pngpriv.h, pngtest.c and pngvalid.c to ensure
that POSIX conformant systems disable non-POSIX APIs. _ISOC99_SOURCE is
defined in pngpriv.h to obtain the ISO C99 snprintf definition, when
available.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
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7
CHANGES
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@ -3337,7 +3337,12 @@ Version 1.5.3beta04 [April 27, 2011]
Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
avoid a possible clash with the png_jmpbuf macro on some platforms.
Version 1.5.3beta05 [April 29, 2011]
Version 1.5.3beta05 [May 4, 2011]
Added appropriate feature test macros to ensure libpng sees the correct API
_POSIX_SOURCE is defined in pngpriv.h, pngtest.c and pngvalid.c to ensure
that POSIX conformant systems disable non-POSIX APIs. _ISOC99_SOURCE is
defined in pngpriv.h to obtain the ISO C99 snprintf definition, when
available.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

15
pngpriv.h
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@ -25,6 +25,21 @@
#ifndef PNGPRIV_H
#define PNGPRIV_H
/* Feature Test Macros. The following are defined here to ensure that correctly
* implemented libraries reveal the APIs libpng needs to build and hide those
* that are not needed and potentially damaging to the compilation.
*
* Feature Test Macros must be defined before any system header is included (see
* POSIX 1003.1 2.8.2 "POSIX Symbols."
*
* These macros only have an effect if the operating system supports either
* POSIX 1003.1 or C99, or both. On other operating systems (particularly
* Windows/Visual Studio) there is no effect; the OS specific tests below are
* still required (as of 2011-05-02.)
*/
#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
#define _ISOC99_SOURCE 1 /* for snprintf */
/* This is required for the definition of abort(), used as a last ditch
* error handler when all else fails.
*/

2
pngtest.c
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@ -31,6 +31,8 @@
* of files at once by typing "pngtest -m file1.png file2.png ..."
*/
#define _POSIX_SOURCE 1
#include "zlib.h"
#include "png.h"
/* Copied from pngpriv.h but only used in error messages below. */

2
pngvalid.c
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@ -19,6 +19,8 @@
* transformations performed by libpng.
*/
#define _POSIX_SOURCE 1
#include "png.h"
#if PNG_LIBPNG_VER < 10500
/* This delibarately lacks the PNG_CONST. */