docbook: fix rm'ed files mentioned in .d build error

When some .xml include file is deleted or removed, but the .d
already exists, the build will fail trying to build the apparently
missing file, requiring a make proper.
This fix enclosed the prerequisites in $(wildcard ...), when
generating the .d file.

diff --git a/docbook/dep.xsl b/docbook/dep.xsl
index 0415f96..f65480d 100644 (file)
--- a/docbook/dep.xsl
+++ b/docbook/dep.xsl
@@ -8,8 +8,9 @@
        <xsl:template match="/">
                <xsl:document href="{$output}" method="text" indent="no" 
                                          omit-xml-declaration="yes">
        <xsl:template match="/">
                <xsl:document href="{$output}" method="text" indent="no" 
                                          omit-xml-declaration="yes">

-                       <xsl:value-of select="concat($output, ': ')"/>
+                       <xsl:value-of select="concat($output, ':$(wildcard  ')"/>

                        <xsl:apply-templates mode="subroot"/>
                        <xsl:apply-templates mode="subroot"/>

+                       <xsl:text>)&#xA;</xsl:text>

                </xsl:document>
        </xsl:template>
        
                </xsl:document>
        </xsl:template>