--- src/configure.ac	2021-04-05 15:12:49.000000000 +0200
+++ src/configure.ac	2021-04-05 15:17:45.000000000 +0200
@@ -2023,14 +2015,7 @@
       tcldll=`echo 'puts libtcl[[info tclversion]][[info sharedlibextension]]' | $vi_cv_path_tcl -`
 
       AC_MSG_CHECKING(for location of Tcl include)
-      if test "x$MACOS_X" != "xyes"; then
-	tclinc="$tclloc/include $tclloc/include/tcl $tclloc/include/tcl$tclver /usr/local/include /usr/local/include/tcl$tclver /usr/include /usr/include/tcl$tclver"
-      else
-	dnl For all macOS, use the value from TCL in case use of, say, homebrew
-	dnl For Mac OS X 10.3, use the OS-provided framework location
-	dnl For Mac OS X 10.14, the OS-provided framework location doesn't contain the headers, so also check the Xcode SDK
-	tclinc="$tclloc/include $tclloc/include/tcl $tclloc/include/tcl$tclver /System/Library/Frameworks/Tcl.framework/Headers `xcrun --show-sdk-path`/System/Library/Frameworks/Tcl.framework/Versions/Current/Headers"
-      fi
+      tclinc="$tclloc/include $tclloc/include/tcl $tclloc/include/tcl$tclver"
       TCL_INC=
       for try in $tclinc; do
 	if test -f "$try/tcl.h"; then
@@ -2045,16 +2030,8 @@
       fi
       if test -z "$SKIP_TCL"; then
 	AC_MSG_CHECKING(for location of tclConfig.sh script)
-	if test "x$MACOS_X" != "xyes"; then
-	  tclcnf=`echo $tclinc | sed s/include/lib/g`
-	  tclcnf="$tclcnf `echo $tclinc | sed s/include/lib64/g`"
-	else
-	  dnl For all macOS, use the value from TCL in case use of, say, homebrew
-	  dnl For Mac OS X 10.3, use the OS-provided framework location
-	  dnl For Mac OS X 10.14, the OS-provided framework location doesn't contain the headers, so also check the Xcode SDK
-	  tclcnf=`echo $tclinc | sed s/include/lib/g`
-	  tclcnf="$tclcnf /System/Library/Frameworks/Tcl.framework `xcrun --show-sdk-path`/System/Library/Frameworks/Tcl.framework"
-	fi
+	tclcnf=`echo $tclinc | sed s/include/lib/g`
+	tclcnf="$tclcnf `echo $tclinc | sed s/include/lib64/g`"
 	for try in $tclcnf; do
 	  if test -f "$try/tclConfig.sh"; then
 	    AC_MSG_RESULT($try/tclConfig.sh)