[gspell] build: override gtk-doc.make recipe for the -sections.txt target

[Sébastien Wilmet <swilmet src gnome org>]

commit d5e3ee65635a8785bc5d0b2ed39eab09b5b44e68
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Mar 13 11:17:19 2016 +0100

    build: override gtk-doc.make recipe for the -sections.txt target

 configure.ac               |    1 -
 docs/reference/Makefile.am |    5 +++++
 2 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a29ce2a..4ee1d68 100644
--- a/configure.ac
+++ b/configure.ac
@@ -206,7 +206,6 @@ AC_CONFIG_FILES([
        Makefile
        docs/Makefile
        docs/reference/gspell-docs.xml
-       docs/reference/gspell-${GSPELL_API_VERSION}.0-sections.txt:docs/reference/gspell-sections.txt.in
        docs/reference/Makefile
        gspell/Makefile
        gspell/resources/Makefile
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index 67bf7ae..2dfab5d 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -60,6 +60,11 @@ MAINTAINERCLEANFILES =                       \
 # include common portion ...
 include $(top_srcdir)/gtk-doc.make
 
+# gtk-doc.make has already a recipe for the $(DOC_MODULE)-sections.txt target.
+# So override it here.
+$(builddir)/$(DOC_MODULE)-sections.txt: Makefile $(srcdir)/gspell-sections.txt.in
+       $(AM_V_GEN) cp $(srcdir)/gspell-sections.txt.in $@
+
 EXTRA_DIST +=                  \
        gspell-docs.xml.in      \
        gspell-sections.txt.in