1

     2

          <xsd:attribute name="Compiler" type="xsd:string" use="optional" default="gcc"/>

     3

          <xsd:attribute name="CFLAGS" type="xsd:string" use="required"/>

     4

          <xsd:attribute name="Linker" type="xsd:string" use="optional" default="ld"/>

     5

          <xsd:attribute name="LDFLAGS" type="xsd:string" use="required"/>