diff --git a/ANNOUNCE b/ANNOUNCE
index d7b9bdfd..7fd944a3 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.43rc01 - February 18, 2010
+Libpng 1.2.43rc02 - February 20, 2010
 
 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.
@@ -9,36 +9,36 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.43rc01.tar.xz (LZMA-compressed, recommended)
-   libpng-1.2.43rc01.tar.gz
-   libpng-1.2.43rc01.tar.bz2
+   libpng-1.2.43rc02.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.43rc02.tar.gz
+   libpng-1.2.43rc02.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.43rc01-no-config.tar.xz (LZMA-compressed, recommended)
-   libpng-1.2.43rc01-no-config.tar.gz
-   libpng-1.2.43rc01-no-config.tar.bz2
+   libpng-1.2.43rc02-no-config.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.43rc02-no-config.tar.gz
+   libpng-1.2.43rc02-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1243r01.zip
-   lp1243r01.7z
-   lp1243r01.tar.bz2
+   lp1243r02.zip
+   lp1243r02.7z
+   lp1243r02.tar.bz2
 
 Project files
 
-   libpng-1.2.43rc01-project-netware.zip
-   libpng-1.2.43rc01-project-wince.zip
+   libpng-1.2.43rc02-project-netware.zip
+   libpng-1.2.43rc02-project-wince.zip
 
 Other information:
 
-   libpng-1.2.43rc01-README.txt
-   libpng-1.2.43rc01-KNOWNBUGS.txt
-   libpng-1.2.43rc01-LICENSE.txt
-   libpng-1.2.43rc01-Y2K-compliance.txt
-   libpng-1.2.43rc01-[previous version]-diff.txt
+   libpng-1.2.43rc02-README.txt
+   libpng-1.2.43rc02-KNOWNBUGS.txt
+   libpng-1.2.43rc02-LICENSE.txt
+   libpng-1.2.43rc02-Y2K-compliance.txt
+   libpng-1.2.43rc02-[previous version]-diff.txt
 
 Changes since the last public release (1.2.42):
 
@@ -67,9 +67,12 @@ version 1.2.43beta04 [February 8, 2010]
 version 1.2.43beta05 [February 8, 2010]
   Ported rewritten png_decompress_chunk() by John Bowler from libpng-1.4.1.
 
-version 1.0.53rc01 and 1.2.43rc01 [February 18, 2010]
+version 1.0.53rc01 and 1.2.43rc01 [February 20, 2010]
   No changes.
 
+version 1.0.53rc02 and 1.2.43rc02 [February 20, 2010]
+  Define _ALL_SOURCE in pngconf.h when building with AIX compiler.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index 9f235db4..8ccd4757 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2672,6 +2672,9 @@ version 1.2.43beta05 [February 8, 2010]
 version 1.0.53rc01 and 1.2.43rc01 [February 18, 2010]
   No changes.
 
+version 1.0.53rc02 and 1.2.43rc02 [February 20, 2010]
+  Define _ALL_SOURCE in pngconf.h when building with AIX compiler.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/configure b/configure
index 0692f64e..bcac4641 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for libpng 1.2.43rc01.
+# Generated by GNU Autoconf 2.65 for libpng 1.2.43rc02.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -701,8 +701,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.2.43rc01'
-PACKAGE_STRING='libpng 1.2.43rc01'
+PACKAGE_VERSION='1.2.43rc02'
+PACKAGE_STRING='libpng 1.2.43rc02'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1435,7 +1435,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.2.43rc01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.43rc02 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1505,7 +1505,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.2.43rc01:";;
+     short | recursive ) echo "Configuration of libpng 1.2.43rc02:";;
    esac
   cat <<\_ACEOF
 
@@ -1612,7 +1612,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.2.43rc01
+libpng configure 1.2.43rc02
 generated by GNU Autoconf 2.65
 
 Copyright (C) 2009 Free Software Foundation, Inc.
@@ -2037,7 +2037,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.2.43rc01, which was
+It was created by libpng $as_me 1.2.43rc02, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   $ $0 $@
@@ -2845,7 +2845,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.2.43rc01'
+ VERSION='1.2.43rc02'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2909,7 +2909,7 @@ fi
 
 
 
-PNGLIB_VERSION=1.2.43rc01
+PNGLIB_VERSION=1.2.43rc02
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=43
@@ -11420,7 +11420,12 @@ else
 fi
 
 
-LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
+case $host_os in
+  aix*)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;;
+  *)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
+esac
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE" >&5
 $as_echo_n "checking if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -12074,7 +12079,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.2.43rc01, which was
+This file was extended by libpng $as_me 1.2.43rc02, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -12140,7 +12145,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.2.43rc01
+libpng config.status 1.2.43rc02
 configured by $0, generated by GNU Autoconf 2.65,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index e40fd83c..7488a480 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.43rc01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.43rc02], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.43rc01
+PNGLIB_VERSION=1.2.43rc02
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
 PNGLIB_RELEASE=43
@@ -59,7 +59,12 @@ AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
 AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
 AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))
 
-LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
+case $host_os in
+  aix*)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;;
+  *)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
+esac
 AC_MSG_CHECKING(
   [if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE])
 AC_TRY_COMPILE(
diff --git a/pngconf.h b/pngconf.h
index 7b80692d..e2e808a3 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.43rc01 - February 18, 2010
+ * libpng version 1.2.43rc02 - February 20, 2010
  * Copyright (c) 1998-2010 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -40,6 +40,16 @@
 #endif
 #endif
 
+/* Added at libpng-1.2.43 */
+#if ((defined(_AIX)) && \
+     (!defined (_XOPEN_SOURCE)) &&  \
+     (!defined (_POSIX_SOURCE)) && \
+     (!defined (_ANSI_C_SOURCE)))
+#  ifndef _ALL_SOURCE
+#    define _ALL_SOURCE
+#  endif
+#endif
+
 /*
  * Added at libpng-1.2.8
  *
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index f1ccfc4b..e475ef3c 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -23,7 +23,7 @@ LN_SF = ln -f -s
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.43rc01
+PNGMIN = 1.2.43rc02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
@@ -48,7 +48,7 @@ LDDEBUG =
 CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-W -Wall
-CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+CFLAGS = -D_ALL_SOURCE -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
 LDFLAGS = -L. -L$(ZLIBLIB) -lpng12 -lz -lm $(LDRELEASE)
 
 # File extensions