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diff --git a/Build/source/libs/zziplib/zziplib-0.13.62/m4/ax_cflags_no_writable_strings.m4 b/Build/source/libs/zziplib/zziplib-0.13.62/m4/ax_cflags_no_writable_strings.m4
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index 00000000000..db9997ea6fd
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+++ b/Build/source/libs/zziplib/zziplib-0.13.62/m4/ax_cflags_no_writable_strings.m4
@@ -0,0 +1,145 @@
+dnl /usr/share/aclocal/guidod-cvs/ax_cflags_no_writable_strings.m4
+dnl @synopsis AX_CFLAGS_NO_WRITABLE_STRINGS [(shellvar [,default, [A/NA]])]
+dnl
+dnl Try to find a compiler option that makes all stringliteral
+dnl readonly.
+dnl
+dnl The sanity check is done by looking at string.h which has a set of
+dnl strcpy definitions that should be defined with const-modifiers to
+dnl not emit a warning in all so many places.
+dnl
+dnl For the GNU CC compiler it will be -fno-writable-strings
+dnl -Wwrite-strings The result is added to the shellvar being CFLAGS by
+dnl default.
+dnl
+dnl DEFAULTS:
+dnl
+dnl - $1 shell-variable-to-add-to : CFLAGS
+dnl - $2 add-value-if-not-found : nothing
+dnl - $3 action-if-found : add value to shellvariable
+dnl - $4 action-if-not-found : nothing
+dnl
+dnl @category C
+dnl @author Guido U. Draheim <guidod@gmx.de>
+dnl @version 2006-12-12
+dnl @license GPLWithACException
+
+AC_DEFUN([AX_CFLAGS_NO_WRITABLE_STRINGS],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_no_writable_strings])dnl
+AC_CACHE_CHECK([m4_ifval([$1],[$1],FLAGS) making strings readonly],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+# IRIX C compiler:
+# -use_readonly_const is the default for IRIX C,
+# puts them into .rodata, but they are copied later.
+# need to be "-G0 -rdatashared" for strictmode but
+# I am not sure what effect that has really. - guidod
+for ac_arg dnl
+in "-pedantic % -fno-writable-strings -Wwrite-strings" dnl GCC
+ "-pedantic % -fconst-strings -Wwrite-strings" dnl newer GCC
+ "-v -Xc % -xstrconst" dnl Solaris C - strings go into readonly segment
+ "+w1 -Aa % +ESlit" dnl HP-UX C - strings go into readonly segment
+ "-w0 -std1 % -readonly_strings" dnl Digital Unix - again readonly segment
+ "-fullwarn -use_readonly_const %% ok, its the default" dnl IRIX C
+ #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+ AC_TRY_COMPILE([],[return 0;],
+ [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+ .|.no|.no,*) ;;
+ *) # sanity check - testing strcpy() from string.h
+ cp config.log config.tmp
+ AC_TRY_COMPILE([#include <string.h>],[
+ char test[16];
+ if (strcpy (test, "test")) return 1;],
+ dnl the original did use test -n `$CC testprogram.c`
+ [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+ then VAR="no, suppressed, string.h," ; fi],
+ [VAR="no, suppressed, string.h"])
+ rm config.tmp
+ ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+ .ok|.ok,*) m4_ifvaln($3,$3) ;;
+ .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+ AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+ *) m4_ifvaln($3,$3,[
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_NO_WRITABLE_STRINGS],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_no_writable_strings])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) making strings readonly],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+# IRIX C compiler:
+# -use_readonly_const is the default for IRIX C,
+# puts them into .rodata, but they are copied later.
+# need to be "-G0 -rdatashared" for strictmode but
+# I am not sure what effect that has really. - guidod
+for ac_arg dnl
+in "-pedantic -Werror % -fno-writable-strings -Wwrite-strings" dnl GCC
+ "-pedantic -Werror % -fconst-strings -Wwrite-strings" dnl newer GCC
+ "-pedantic % -fconst-strings %% no, const-strings is default" dnl newer GCC
+ "-v -Xc % -xstrconst" dnl Solaris C - strings go into readonly segment
+ "+w1 -Aa % +ESlit" dnl HP-UX C - strings go into readonly segment
+ "-w0 -std1 % -readonly_strings" dnl Digital Unix - again readonly segment
+ "-fullwarn -use_readonly_const %% ok, its the default" dnl IRIX C
+ #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+ AC_TRY_COMPILE([],[return 0;],
+ [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+ .|.no|.no,*) ;;
+ *) # sanity check - testing strcpy() from string.h
+ cp config.log config.tmp
+ AC_TRY_COMPILE([#include <string.h>],[
+ char test[16];
+ if (strcpy (test, "test")) return 1;],
+ dnl the original did use test -n `$CC testprogram.c`
+ [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+ then VAR="no, suppressed, string.h," ; fi],
+ [VAR="no, suppressed, string.h"])
+ rm config.tmp
+ ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+ .ok|.ok,*) m4_ifvaln($3,$3) ;;
+ .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+ AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+ *) m4_ifvaln($3,$3,[
+ if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+ then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+ else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+ m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+ fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+