[gtk-doc] make: Automatically clean sections.txt if --rebuild-sections is used

[Stefan Kost <stefkost src gnome org>]

commit bea2c3639b429e043ccff89f868cf77556c87c88
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri Dec 19 11:29:55 2014 +0000

    make: Automatically clean sections.txt if --rebuild-sections is used
    
    Rather than documenting it in a comment in the example Makefile.am;
    might as well automate it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741763

 examples/Makefile.am |    5 -----
 gtk-doc.make         |    3 +++
 gtk-doc.notmpl.make  |    3 +++
 3 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/examples/Makefile.am b/examples/Makefile.am
index b6496d8..2fccb63 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -78,11 +78,6 @@ GTKDOC_LIBS=
 # This includes the standard gtk-doc make rules, copied by gtkdocize.
 include $(top_srcdir)/gtk-doc.make
 
-# Files not to distribute
-# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types
-# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt
-#DISTCLEANFILES +=
-
 # Comment this out if you want 'make check' to test you doc status
 # and run some sanity checks
 if ENABLE_GTK_DOC
diff --git a/gtk-doc.make b/gtk-doc.make
index dd31993..374c08e 100644
--- a/gtk-doc.make
+++ b/gtk-doc.make
@@ -246,6 +246,9 @@ clean-local:
        @if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-types" ; then \
          rm -f $(DOC_MODULE).types; \
        fi
+       @if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-sections" ; then \
+         rm -f $(DOC_MODULE)-sections.txt; \
+       fi
 
 distclean-local:
        @rm -rf xml html $(REPORT_FILES) $(DOC_MODULE).pdf \
diff --git a/gtk-doc.notmpl.make b/gtk-doc.notmpl.make
index e791656..30f4eb2 100644
--- a/gtk-doc.notmpl.make
+++ b/gtk-doc.notmpl.make
@@ -223,6 +223,9 @@ clean-local:
        @if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-types" ; then \
          rm -f $(DOC_MODULE).types; \
        fi
+       @if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-sections" ; then \
+         rm -f $(DOC_MODULE)-sections.txt; \
+       fi
 
 distclean-local:
        @rm -rf xml html $(REPORT_FILES) $(DOC_MODULE).pdf \