diff -r 5f9e07d3dd6c -r b0c4750cecd8 make/configure.vm
--- a/make/configure.vm	Wed Jan 17 21:01:50 2024 +0100
+++ b/make/configure.vm	Sat Jan 20 16:02:04 2024 +0100
@@ -93,11 +93,7 @@
 #if( $features.size() > 0 )
 Optional Features:
 #foreach( $feature in $features )
-#if( $feature.auto )
-  --disable-${feature.arg}
-#else
-  --enable-${feature.arg}
-#end
+${feature.helpText}
 #end
 
 #end
@@ -190,17 +186,17 @@
 printf "detect platform... "
 if [ "$OS" = "SunOS" ]; then
     PLATFORM="solaris sunos unix svr4"
-fi
-if [ "$OS" = "Linux" ]; then
+elif [ "$OS" = "Linux" ]; then
     PLATFORM="linux unix"
-fi
-if [ "$OS" = "FreeBSD" ]; then
+elif [ "$OS" = "FreeBSD" ]; then
     PLATFORM="freebsd bsd unix"
-fi
-if [ "$OS" = "Darwin" ]; then
+elif [ "$OS" = "OpenBSD" ]; then
+    PLATFORM="openbsd bsd unix"
+elif [ "$OS" = "NetBSD" ]; then
+    PLATFORM="netbsd bsd unix"
+elif [ "$OS" = "Darwin" ]; then
     PLATFORM="macos osx bsd unix"
-fi
-if echo "$OS" | grep -i "MINGW" > /dev/null; then
+elif echo "$OS" | grep -i "MINGW" > /dev/null; then
     PLATFORM="windows mingw"
 fi
 : ${PLATFORM:="unix"}
@@ -228,6 +224,26 @@
     done
     return 0
 }
+istoolchain()
+{
+    for t in $TOOLCHAIN
+    do
+        if [ "$t" = "$1" ]; then
+            return 0
+        fi
+    done
+    return 1
+}
+notistoolchain()
+{
+    for t in $TOOLCHAIN
+    do
+        if [ "$t" = "$1" ]; then
+            return 1
+        fi
+    done
+    return 0
+}
 ]]#
 ## End of unparsed content **
 
@@ -307,8 +323,13 @@
             break
         fi
         #end
+        #if( $sub.toolchain )
+        if notistoolchain "${sub.toolchain}"; then
+            break
+        fi
+        #end
         #foreach( $np in $sub.notList )
-        if isplatform "${np}"; then
+        if isplatform "${np}" || istoolchain "${np}"; then
             break
         fi
         #end
@@ -384,8 +405,13 @@
         break
     fi
     #end
+    #if( $dependency.toolchain )
+    if notistoolchain "${dependency.toolchain}"; then
+        break
+    fi
+    #end
     #foreach( $np in $dependency.notList )
-    if isplatform "${np}"; then
+    if isplatform "${np}" || istoolchain "${np}"; then
         break
     fi
     #end
@@ -444,10 +470,10 @@
 
 # add general dependency flags to flags.mk
 echo "# general flags" >> "$TEMP_DIR/flags.mk"
-if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+if [ -n "${TEMP_CFLAGS}" ] && [ -n "$lang_c" ]; then
     echo "CFLAGS += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
-if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+if [ -n "${TEMP_CXXFLAGS}" ] && [ -n "$lang_cpp" ]; then
     echo "CXXFLAGS += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
 if [ -n "${TEMP_LDFLAGS}" ]; then
@@ -578,10 +604,10 @@
 fi
 #end
 
-if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+if [ -n "${TEMP_CFLAGS}" ] && [ -n "$lang_c" ]; then
     echo "${target.cFlags}  += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
-if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+if [ -n "${TEMP_CXXFLAGS}" ] && [ -n "$lang_cpp" ]; then
     echo "${target.cxxFlags}  += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
 if [ "$BUILD_TYPE" = "debug" ]; then
@@ -645,6 +671,3 @@
 write_toolchain_defaults "$TEMP_DIR/toolchain.mk"
 cat "$TEMP_DIR/vars.mk" "$TEMP_DIR/toolchain.mk" "$TEMP_DIR/flags.mk" "$TEMP_DIR/make.mk" > config.mk
 rm -Rf "$TEMP_DIR"
-
-
-