diff -r 5f9e07d3dd6c -r b0c4750cecd8 make/uwproj.xsd
--- a/make/uwproj.xsd	Wed Jan 17 21:01:50 2024 +0100
+++ b/make/uwproj.xsd	Sat Jan 20 16:02:04 2024 +0100
@@ -3,7 +3,7 @@
            xmlns="http://unixwork.de/uwproj"
            targetNamespace="http://unixwork.de/uwproj"
            elementFormDefault="qualified"
-           version="0.1"
+           version="0.2"
 >
     <xs:element name="project" type="ProjectType"/>
 
@@ -102,9 +102,11 @@
                 </p>
                 <p>
                     The optional <code>platform</code> attribute may specify a <em>single</em> platform identifier and
-                    the optional <code>not</code> attribute may specify a comma-separated list of platform identifiers.
-                    The configure script shall skip this dependency declaration if the detected platform is not
-                    matching the filter specification of these attributes.
+                    the optional <code>toolchain</code> attribute may specify a <em>single</em> toolchain.
+                    The optional <code>not</code> attribute may specify a comma-separated list of platform and/or
+                    toolchain identifiers.
+                    The configure script shall skip this dependency declaration if the detected platform and toolchain
+                    is not matching the filter specification of these attributes.
                 </p>
             </xs:documentation>
         </xs:annotation>
@@ -125,6 +127,7 @@
         </xs:choice>
         <xs:attribute name="name" type="xs:string"/>
         <xs:attribute name="platform" type="xs:string"/>
+        <xs:attribute name="toolchain" type="xs:string"/>
         <xs:attribute name="not" type="xs:string"/>
     </xs:complexType>
 
@@ -186,6 +189,8 @@
                 and is supposed to be automatically disabled (without error) when the dependencies are not satisfied.
                 The name that is supposed to be used for the --enable and --disable arguments can be optionally
                 specified with the <code>arg</code> attribute. Otherwise, the <code>name</code> is used by default.
+                Optionally, a description for the help text of the resulting configure script can be specified by
+                adding a <code>desc</code> element.
             </xs:documentation>
         </xs:annotation>
         <xs:choice minOccurs="0" maxOccurs="unbounded">
@@ -194,6 +199,7 @@
         <xs:attribute name="name" type="xs:string" use="required"/>
         <xs:attribute name="arg" type="xs:string"/>
         <xs:attribute name="default" type="xs:boolean" default="false"/>
+        <xs:element name="desc" type="xs:string"/>
     </xs:complexType>
 
     <xs:complexType name="OptionType">
@@ -278,4 +284,4 @@
         </xs:annotation>
         <xs:restriction base="xs:string"/>
     </xs:simpleType>
-</xs:schema>
\ No newline at end of file
+</xs:schema>