diff --git a/macosx/configure b/macosx/configure
index 88868dd..c926daa 100644
--- a/macosx/configure
+++ b/macosx/configure
@@ -5375,7 +5375,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10487,7 +10487,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10527,7 +10527,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
diff --git a/pkgs/itcl4.3.5/configure b/pkgs/itcl4.3.5/configure
index 5801c54..d81b6cb 100644
--- a/pkgs/itcl4.3.5/configure
+++ b/pkgs/itcl4.3.5/configure
@@ -6514,7 +6514,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -6822,7 +6822,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/itcl4.3.5/tclconfig/tcl.m4 b/pkgs/itcl4.3.5/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/itcl4.3.5/tclconfig/tcl.m4
+++ b/pkgs/itcl4.3.5/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/itcl4.3.5/win/rules.vc b/pkgs/itcl4.3.5/win/rules.vc
index 3d98892..dfe710f 100644
--- a/pkgs/itcl4.3.5/win/rules.vc
+++ b/pkgs/itcl4.3.5/win/rules.vc
@@ -1518,10 +1518,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/sqlite3.51.0/configure b/pkgs/sqlite3.51.0/configure
index c8299a6..7cae86c 100644
--- a/pkgs/sqlite3.51.0/configure
+++ b/pkgs/sqlite3.51.0/configure
@@ -6551,7 +6551,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -6859,7 +6859,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/sqlite3.51.0/tclconfig/tcl.m4 b/pkgs/sqlite3.51.0/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/sqlite3.51.0/tclconfig/tcl.m4
+++ b/pkgs/sqlite3.51.0/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/sqlite3.51.0/win/rules.vc b/pkgs/sqlite3.51.0/win/rules.vc
index 3d98892..dfe710f 100644
--- a/pkgs/sqlite3.51.0/win/rules.vc
+++ b/pkgs/sqlite3.51.0/win/rules.vc
@@ -1518,10 +1518,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/tdbc1.1.13/configure b/pkgs/tdbc1.1.13/configure
index 026a4ab..700ff3a 100644
--- a/pkgs/tdbc1.1.13/configure
+++ b/pkgs/tdbc1.1.13/configure
@@ -6632,7 +6632,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -6940,7 +6940,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbc1.1.13/tclconfig/tcl.m4 b/pkgs/tdbc1.1.13/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/tdbc1.1.13/tclconfig/tcl.m4
+++ b/pkgs/tdbc1.1.13/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbc1.1.13/win/rules.vc b/pkgs/tdbc1.1.13/win/rules.vc
index 3d98892..dfe710f 100644
--- a/pkgs/tdbc1.1.13/win/rules.vc
+++ b/pkgs/tdbc1.1.13/win/rules.vc
@@ -1518,10 +1518,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/tdbcmysql1.1.13/configure b/pkgs/tdbcmysql1.1.13/configure
index 5d579de..d500c2f 100644
--- a/pkgs/tdbcmysql1.1.13/configure
+++ b/pkgs/tdbcmysql1.1.13/configure
@@ -6998,7 +6998,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -7306,7 +7306,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcmysql1.1.13/tclconfig/tcl.m4 b/pkgs/tdbcmysql1.1.13/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/tdbcmysql1.1.13/tclconfig/tcl.m4
+++ b/pkgs/tdbcmysql1.1.13/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcmysql1.1.13/win/rules.vc b/pkgs/tdbcmysql1.1.13/win/rules.vc
index 1c5f8f2..5982b80 100644
--- a/pkgs/tdbcmysql1.1.13/win/rules.vc
+++ b/pkgs/tdbcmysql1.1.13/win/rules.vc
@@ -1517,10 +1517,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/tdbcodbc1.1.13/configure b/pkgs/tdbcodbc1.1.13/configure
index 4d7ff51..f40ed2b 100644
--- a/pkgs/tdbcodbc1.1.13/configure
+++ b/pkgs/tdbcodbc1.1.13/configure
@@ -6998,7 +6998,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -7306,7 +7306,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcodbc1.1.13/tclconfig/tcl.m4 b/pkgs/tdbcodbc1.1.13/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/tdbcodbc1.1.13/tclconfig/tcl.m4
+++ b/pkgs/tdbcodbc1.1.13/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcodbc1.1.13/win/rules.vc b/pkgs/tdbcodbc1.1.13/win/rules.vc
index 1c5f8f2..5982b80 100644
--- a/pkgs/tdbcodbc1.1.13/win/rules.vc
+++ b/pkgs/tdbcodbc1.1.13/win/rules.vc
@@ -1517,10 +1517,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/tdbcpostgres1.1.13/configure b/pkgs/tdbcpostgres1.1.13/configure
index 1959357..bfa3007 100644
--- a/pkgs/tdbcpostgres1.1.13/configure
+++ b/pkgs/tdbcpostgres1.1.13/configure
@@ -6998,7 +6998,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -7306,7 +7306,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcpostgres1.1.13/tclconfig/tcl.m4 b/pkgs/tdbcpostgres1.1.13/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/tdbcpostgres1.1.13/tclconfig/tcl.m4
+++ b/pkgs/tdbcpostgres1.1.13/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcpostgres1.1.13/win/rules.vc b/pkgs/tdbcpostgres1.1.13/win/rules.vc
index 1c5f8f2..5982b80 100644
--- a/pkgs/tdbcpostgres1.1.13/win/rules.vc
+++ b/pkgs/tdbcpostgres1.1.13/win/rules.vc
@@ -1517,10 +1517,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/tdbcsqlite3-1.1.13/configure b/pkgs/tdbcsqlite3-1.1.13/configure
index 9435d82..60aaf9e 100644
--- a/pkgs/tdbcsqlite3-1.1.13/configure
+++ b/pkgs/tdbcsqlite3-1.1.13/configure
@@ -4870,7 +4870,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -5178,7 +5178,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcsqlite3-1.1.13/tclconfig/tcl.m4 b/pkgs/tdbcsqlite3-1.1.13/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/tdbcsqlite3-1.1.13/tclconfig/tcl.m4
+++ b/pkgs/tdbcsqlite3-1.1.13/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/tdbcsqlite3-1.1.13/win/rules.vc b/pkgs/tdbcsqlite3-1.1.13/win/rules.vc
index 1c5f8f2..5982b80 100644
--- a/pkgs/tdbcsqlite3-1.1.13/win/rules.vc
+++ b/pkgs/tdbcsqlite3-1.1.13/win/rules.vc
@@ -1517,10 +1517,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/pkgs/thread3.0.4/configure b/pkgs/thread3.0.4/configure
index aaa9aed..52588d3 100644
--- a/pkgs/thread3.0.4/configure
+++ b/pkgs/thread3.0.4/configure
@@ -6531,7 +6531,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -6839,7 +6839,7 @@ fi
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/thread3.0.4/tclconfig/tcl.m4 b/pkgs/thread3.0.4/tclconfig/tcl.m4
index 1b7fb44..eb05d5a 100644
--- a/pkgs/thread3.0.4/tclconfig/tcl.m4
+++ b/pkgs/thread3.0.4/tclconfig/tcl.m4
@@ -1118,7 +1118,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],[tcl_cv_cc_visibility_hidden=yes],
@@ -1225,7 +1225,7 @@ AC_DEFUN([TEA_CONFIG_CFLAGS], [
 		    RC="rc"
 		    lflags="${lflags} -nologo"
 		    LINKBIN="link"
-		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 -WX ${runtime}d"
+		    CFLAGS_DEBUG="-nologo -Z7 -Od -W3 ${runtime}d"
 		    CFLAGS_OPTIMIZE="-nologo -O2 -W2 ${runtime}"
 		fi
 	    fi
diff --git a/pkgs/thread3.0.4/win/rules.vc b/pkgs/thread3.0.4/win/rules.vc
index 3d98892..dfe710f 100644
--- a/pkgs/thread3.0.4/win/rules.vc
+++ b/pkgs/thread3.0.4/win/rules.vc
@@ -1518,10 +1518,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/unix/configure b/unix/configure
index 56bf3e3..dc0501e 100644
--- a/unix/configure
+++ b/unix/configure
@@ -5369,7 +5369,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10481,7 +10481,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -10521,7 +10521,7 @@ then :
   printf %s "(cached) " >&6
 else case e in #(
   e)
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
diff --git a/unix/configure.ac b/unix/configure.ac
index 5eff9a2..d24975f 100644
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -539,7 +539,7 @@ if test "`uname -s`" = "Darwin" ; then
     AC_DEFINE(TCL_WIDE_CLICKS, 1,
 	[Does this platform have wide high-resolution clicks?])
 	AC_CACHE_CHECK([if weak import is available], tcl_cv_cc_weak_import, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 		int rand(void) __attribute__((weak_import));
 	    ]], [[rand();]])],
@@ -550,7 +550,7 @@ if test "`uname -s`" = "Darwin" ; then
     fi
     AC_CACHE_CHECK([if Darwin SUSv3 extensions are available],
 	tcl_cv_cc_darwin_c_source, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 		#define _DARWIN_C_SOURCE 1
 		#include <sys/cdefs.h>
diff --git a/unix/dltest/Makefile.in b/unix/dltest/Makefile.in
index 06d0e30..5c39f8c 100644
--- a/unix/dltest/Makefile.in
+++ b/unix/dltest/Makefile.in
@@ -17,7 +17,7 @@ TCL_VERSION=		@TCL_VERSION@
 
 CFLAGS_DEBUG		= @CFLAGS_DEBUG@
 CFLAGS_OPTIMIZE		= @CFLAGS_OPTIMIZE@
-CFLAGS			= @CFLAGS_DEFAULT@ @CFLAGS@ -DTCL_NO_DEPRECATED=1 -Wall -Wextra -Wc++-compat -Wconversion -Werror
+CFLAGS			= @CFLAGS_DEFAULT@ @CFLAGS@ -DTCL_NO_DEPRECATED=1 -Wall -Wextra -Wc++-compat -Wconversion
 LDFLAGS_DEBUG		= @LDFLAGS_DEBUG@
 LDFLAGS_OPTIMIZE	= @LDFLAGS_OPTIMIZE@
 LDFLAGS			= @LDFLAGS_DEFAULT@ @LDFLAGS@
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index d03f15b..d415086 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -906,7 +906,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 
     AC_CACHE_CHECK([if compiler supports visibility "hidden"],
 	tcl_cv_cc_visibility_hidden, [
-	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS"
 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 	    extern __attribute__((__visibility__("hidden"))) void f(void);
 	    void f(void) {}]], [[f();]])],
diff --git a/win/configure b/win/configure
index 73d5892..1f73e9c 100644
--- a/win/configure
+++ b/win/configure
@@ -4585,8 +4585,7 @@ printf "%s\n" "   Using 64-bit $MACHINE mode" >&6; }
 	else
 	    RC="rc"
 	    # -Od - no optimization
-	    # -WX - warnings as errors
-	    CFLAGS_DEBUG="-nologo -Z7 -Od -WX ${runtime}d"
+	    CFLAGS_DEBUG="-nologo -Z7 -Od ${runtime}d"
 	    # -O2 - create fast code (/Og /Oi /Ot /Oy /Ob2 /Gs /GF /Gy)
 	    CFLAGS_OPTIMIZE="-nologo -O2 ${runtime}"
 	    lflags="${lflags} -nologo"
diff --git a/win/rules.vc b/win/rules.vc
index 9500431..b6e1238 100644
--- a/win/rules.vc
+++ b/win/rules.vc
@@ -1521,10 +1521,6 @@ carch =
 carch = $(carch) /DHAVE_CPUID=1
 !endif
 
-!if $(DEBUG)
-# Turn warnings into errors
-cwarn = $(cwarn) -WX
-!endif
 
 INCLUDES = $(TCL_INCLUDES) $(TK_INCLUDES) $(PRJ_INCLUDES)
 !if !$(DOING_TCL) && !$(DOING_TK)
diff --git a/win/tcl.m4 b/win/tcl.m4
index 96c1c81..d2c065a 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -843,8 +843,7 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	else
 	    RC="rc"
 	    # -Od - no optimization
-	    # -WX - warnings as errors
-	    CFLAGS_DEBUG="-nologo -Z7 -Od -WX ${runtime}d"
+	    CFLAGS_DEBUG="-nologo -Z7 -Od ${runtime}d"
 	    # -O2 - create fast code (/Og /Oi /Ot /Oy /Ob2 /Gs /GF /Gy)
 	    CFLAGS_OPTIMIZE="-nologo -O2 ${runtime}"
 	    lflags="${lflags} -nologo"