[libpng15] Imported from libpng-1.5.16beta06.tar

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for libpng 1.5.15beta06.
+# Generated by GNU Autoconf 2.69 for libpng 1.5.16beta06.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.15beta06'
-PACKAGE_STRING='libpng 1.5.15beta06'
+PACKAGE_VERSION='1.5.16beta06'
+PACKAGE_STRING='libpng 1.5.16beta06'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -637,7 +637,6 @@ am__EXEEXT_TRUE
 LTLIBOBJS
 PNG_ARM_NEON_FALSE
 PNG_ARM_NEON_TRUE
-AM_CCASFLAGS
 binconfigs
 pkgconfigdir
 PNGLIB_RELEASE
@@ -1343,7 +1342,7 @@ 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 1.5.15beta06 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.16beta06 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1413,7 +1412,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.15beta06:";;
+     short | recursive ) echo "Configuration of libpng 1.5.16beta06:";;
    esac
   cat <<\_ACEOF
 
@@ -1435,8 +1434,12 @@ Optional Features:
   --enable-fast-install[=PKGS]
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
-  --enable-arm-neon     Enable ARM NEON optimizations: use 'always' to turn
-                          off run-time checks
+  --enable-arm-neon     Enable ARM NEON optimizations: =no/off, check, api,
+                          yes/on: no/off: disable the optimizations; check:
+                          use internal checking code (deprecated and poorly
+                          supported); api: disable by default, enable by a
+                          call to png_set_option; yes/on: turn on
+                          unconditionally.
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -1530,7 +1533,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.5.15beta06
+libpng configure 1.5.16beta06
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1953,7 +1956,7 @@ 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 1.5.15beta06, which was
+It was created by libpng $as_me 1.5.16beta06, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2816,7 +2819,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.5.15beta06'
+ VERSION='1.5.16beta06'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2886,10 +2889,10 @@ fi
 
 
 
-PNGLIB_VERSION=1.5.15beta06
+PNGLIB_VERSION=1.5.16beta06
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=15
+PNGLIB_RELEASE=16
 
 
 
@@ -12804,30 +12807,51 @@ fi
 
 
 
-# Because GCC by default assembles code with an executable stack, even though it
-# compiles C code with a non-executable stack, it is necessary to do a fixup
-# here (this may by GCC specific)
-AM_CCASFLAGS=-Wa,--noexecstack
-
+# HOST SPECIFIC OPTIONS
+# =====================
+#
+# ARM
+# ===
+#
+# ARM NEON (SIMD) support.
 
 # Check whether --enable-arm-neon was given.
 if test "${enable_arm_neon+set}" = set; then :
-  enableval=$enable_arm_neon; if test "${enableval}" = "yes" -o "${enableval}" = "always"; then
+  enableval=$enable_arm_neon; case "$enableval" in
+      no|off)
+         # disable the default enabling on __ARM_NEON__ systems:
 
-$as_echo "#define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon" >>confdefs.h
+$as_echo "#define PNG_NO_ARM_NEON /**/" >>confdefs.h
 
+         # Prevent inclusion of the assembler files below:
+         enable_arm_neon=no;;
+      check)
 
-$as_echo "#define PNG_ALIGNED_MEMORY_SUPPORTED 1" >>confdefs.h
+$as_echo "#define PNG_ARM_NEON_CHECK_SUPPORTED /**/" >>confdefs.h
+;;
+      api)
 
-      if test "${enableval}" = "always"; then
+$as_echo "#define PNG_ARM_NEON_API_SUPPORTED /**/" >>confdefs.h
+;;
+      yes|on)
 
-$as_echo "#define PNG_NO_ARM_NEON_CHECK /**/" >>confdefs.h
-
-      fi
-    fi
+$as_echo "#define PNG_ARM_NEON_SUPPORTED /**/" >>confdefs.h
+;;
+      *)
+         as_fn_error $? "--enable-arm-neon=${enable_arm_neon}: invalid value" "$LINENO" 5
+   esac
 fi
 
- if test "${enable_arm_neon:-no}" != "no"; then
+
+# Add ARM specific files to all builds where the host_cpu is arm ('arm*') or
+# where ARM optimizations were explicitly requested (this allows a fallback if a
+# future host CPU does not match 'arm*')
+
+ if test "$enable_arm_neon" != 'no' &&
+    case "$host_cpu" in
+      arm*) :;;
+      *)    test "$enable_arm_neon" != '';;
+    esac; then
   PNG_ARM_NEON_TRUE=
   PNG_ARM_NEON_FALSE='#'
 else
@@ -12836,7 +12860,7 @@ else
 fi
 
 
- { $as_echo "$as_me:${as_lineno-$LINENO}: Extra options for compiler: $PNG_COPTS" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: Extra options for compiler: $PNG_COPTS" >&5
 $as_echo "$as_me: Extra options for compiler: $PNG_COPTS" >&6;}
 
 # Config files, substituting as above
@@ -13395,7 +13419,7 @@ 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 1.5.15beta06, which was
+This file was extended by libpng $as_me 1.5.16beta06, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -13461,7 +13485,7 @@ _ACEOF
 cat >>$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 1.5.15beta06
+libpng config.status 1.5.16beta06
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"