Revert "Add Configure question for taint support"

This reverts commit 39f8eb4a21670e6b973dcfc86d0b1339064f5642.

This is because of a variety of issues discussed #19657 and at the PSC
meeting 064 2022-04-22

https://www.nntp.perl.org/group/perl.perl5.porters/2022/04/msg263670.html

12 files changed, 2 insertions, 54 deletions

diff --git a/Configure b/Configure
index 279844e004..bd96249c07 100755
--- a/Configure
+++ b/Configure
@@ -1333,7 +1333,6 @@ stdchar=''
 d_stdio_stream_array=''
 stdio_stream_array=''
 sysman=''
-taint_support=''
 sGMTIME_max=''
 sGMTIME_min=''
 sLOCALTIME_max=''
@@ -7306,40 +7305,6 @@ esac
 : confusing anyway.
 installstyle=$dflt
 
-: U/perl/taint_support.U - do we want taint support?
-case "$taint_support" in
-    $undef|false|[Nn]*)
-       dflt="n"
-       ;;
-    *)
-       dflt="y"
-       ;;
-esac
-cat >&4 <<EOM
-
-
-Perl can provide a set of special security checks, which are known
-as taint mode.  The most well-known of these is that data derived
-from outside your program should not be trusted ("is tainted")
-until you have checked it.
-
-These days there are many more security considerations, and as a result
-taint mode isn't widely used. But support for it adds a runtime overhead,
-whether or not you use it.  As a result, you can choose to build Perl
-without taint support.
-
-EOM
-rp='Do you want to build Perl with taint support?'
-. ./myread
-case "$ans" in
-$undef|false|n|N)    val="$undef"
-        ccflags="$ccflags -DSILENT_NO_TAINT_SUPPORT"
-        ;;
-*)      val="$define" ;;
-esac
-set taint_support
-eval $setvar
-
 : determine where public executables go
 echo " "
 set dflt bin bin
@@ -7365,13 +7330,7 @@ cat <<EOM
 Would you like to build Perl so that the installation is relocatable, so that
 library paths in @INC are determined relative to the path of the perl binary?
 This is not advised for system Perl installs, or if you need to run setid
-EOM
-if test "X$taint_support" = "X$define"; then
-    echo "scripts or scripts under taint mode." >&4
-else
-    echo "scripts." >&4
-fi
-cat <<EOM
+scripts or scripts under taint mode.
 
 If this doesn't make any sense to you, just accept the default '$dflt'.
 EOM
@@ -25612,7 +25571,6 @@ subversion='$subversion'
 sysman='$sysman'
 sysroot='$sysroot'
 tail='$tail'
-taint_support='$taint_support'
 tar='$tar'
 targetarch='$targetarch'
 targetdir='$targetdir'
diff --git a/Cross/config.sh-arm-linux b/Cross/config.sh-arm-linux
index d57f2fb915..7f898cc78f 100644
--- a/Cross/config.sh-arm-linux
+++ b/Cross/config.sh-arm-linux
@@ -1100,7 +1100,6 @@ submit=''
 subversion='12'
 sysman='/usr/share/man/man1'
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetsh='/bin/sh'
diff --git a/Cross/config.sh-arm-linux-n770 b/Cross/config.sh-arm-linux-n770
index 39dc40bc94..13454eb986 100644
--- a/Cross/config.sh-arm-linux-n770
+++ b/Cross/config.sh-arm-linux-n770
@@ -1098,7 +1098,6 @@ submit=''
 subversion='12'
 sysman='/usr/share/man/man1'
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetsh='/bin/sh'
diff --git a/Porting/config.sh b/Porting/config.sh
index 527d65bba5..318de875dd 100644
--- a/Porting/config.sh
+++ b/Porting/config.sh
@@ -1129,7 +1129,6 @@ subversion='12'
 sysman='/usr/share/man/man1'
 sysroot=''
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetdir=''
diff --git a/configure.com b/configure.com
index 783c28f2c5..1ea419785b 100644
--- a/configure.com
+++ b/configure.com
@@ -7181,7 +7181,6 @@ $ WC "srandom_r_proto='0'"
 $ WC "strerror_r_proto='0'"
 $ WC "tmpnam_r_proto='0'"
 $ WC "ttyname_r_proto='" + ttyname_r_proto + "'"
-$ WC "taint_support='define'"
 $!
 $! ##END WRITE NEW CONSTANTS HERE##
 $!
diff --git a/metaconfig.h b/metaconfig.h
index 0743175c33..46d4ab1a8b 100644
--- a/metaconfig.h
+++ b/metaconfig.h
@@ -18,6 +18,5 @@
  * HAS_NL_LANGINFO_L
  * HAS_FFS
  * HAS_FFSL
- * HAS_TAINT_SUPPORT
  *
  */
diff --git a/plan9/config_sh.sample b/plan9/config_sh.sample
index 83511d144d..bc3adbfeec 100644
--- a/plan9/config_sh.sample
+++ b/plan9/config_sh.sample
@@ -1071,7 +1071,6 @@ submit=''
 subversion='12'
 sysman='/sys/man/1pub'
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetsh='/bin/sh'
diff --git a/uconfig.h b/uconfig.h
index 24248c5406..9265bc647d 100644
--- a/uconfig.h
+++ b/uconfig.h
@@ -5341,5 +5341,5 @@
 
 /* Generated from:
  * 87e5998978daf803d19866c43bca24d7c01dc74119650db16f8d18d83f355da9 config_h.SH
- * d2b99db76a1e672884635a578054d9dde08fa174910b94d55fa0698706334ee3 uconfig.sh
+ * 192cfd7d6b90e7961582dadbf7e6ae6de3e4fa6ffde19a0f7148a8572ec635f9 uconfig.sh
  * ex: set ro: */
diff --git a/uconfig.sh b/uconfig.sh
index c2ed9d1ba0..08ff3dae1d 100644
--- a/uconfig.sh
+++ b/uconfig.sh
@@ -865,7 +865,6 @@ stdio_filbuf=''
 stdio_ptr='((fp)->_IO_read_ptr)'
 stdio_stream_array=''
 strerror_r_proto='0'
-taint_support='define'
 targetarch=''
 targetsh='/bin/sh'
 timetype=time_t
diff --git a/uconfig64.sh b/uconfig64.sh
index 238dcc94e9..c64ef0f015 100644
--- a/uconfig64.sh
+++ b/uconfig64.sh
@@ -865,7 +865,6 @@ stdio_filbuf=''
 stdio_ptr='((fp)->_IO_read_ptr)'
 stdio_stream_array=''
 strerror_r_proto='0'
-taint_support='define'
 targetarch=''
 targetsh='/bin/sh'
 timetype=time_t
diff --git a/win32/config.gc b/win32/config.gc
index 9d44768f64..271627a2d2 100644
--- a/win32/config.gc
+++ b/win32/config.gc
@@ -1095,7 +1095,6 @@ submit=''
 subversion='~PERL_SUBVERSION~'
 sysman='/usr/man/man1'
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetsh='cmd /x /c'
diff --git a/win32/config.vc b/win32/config.vc
index 50ba5c16cf..ced877942a 100644
--- a/win32/config.vc
+++ b/win32/config.vc
@@ -1094,7 +1094,6 @@ submit=''
 subversion='~PERL_SUBVERSION~'
 sysman='/usr/man/man1'
 tail=''
-taint_support='define'
 tar=''
 targetarch=''
 targetsh='cmd /x /c'