[libxslt] Streamline and fix documentation installation

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 84c329e4517b250e24412fb8887ed68b4433a239
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sat Apr 2 16:47:09 2022 +0200

    Streamline and fix documentation installation
    
    Use Automake variables to install and distribute files. Remove
    check-extra-dist.

 doc/Makefile.am | 61 ++++++++++++++++++---------------------------------------
 1 file changed, 19 insertions(+), 42 deletions(-)
---
diff --git a/doc/Makefile.am b/doc/Makefile.am
index d4ef7d7a..2f637b84 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -5,21 +5,7 @@ SUBDIRS = devhelp EXSLT/devhelp
 # A file in win32 depends upon two of the doc files
 WIN32_DIR=$(top_srcdir)/win32
 
-EXTRA_DIST =                           \
-       EXSLT/libexslt-api.xml          \
-       EXSLT/libexslt-refs.xml         \
-       apibuild.py                     \
-       checkapisym.xsl                 \
-       libxslt-api.xml                 \
-       libxslt-refs.xml                \
-       symbols.xml                     \
-       syms.xsl                        \
-       tutorial/libxslttutorial.xml    \
-       tutorial2/libxslt_pipes.xml     \
-       xsltproc.1                      \
-       xsltproc.xml
-
-nobase_doc_DATA =                      \
+nobase_dist_doc_DATA =                 \
        tutorial/images/callouts/1.png  \
        tutorial/images/callouts/10.png \
        tutorial/images/callouts/2.png  \
@@ -36,41 +22,32 @@ nobase_doc_DATA =                   \
        tutorial2/libxslt_pipes.html    \
        xsltproc.html
 
-man_MANS = xsltproc.1
+dist_man_MANS = xsltproc.1
+
+EXTRA_DIST =                           \
+       EXSLT/libexslt-api.xml          \
+       EXSLT/libexslt-refs.xml         \
+       apibuild.py                     \
+       checkapisym.xsl                 \
+       libxslt-api.xml                 \
+       libxslt-refs.xml                \
+       symbols.xml                     \
+       syms.xsl                        \
+       tutorial/libxslttutorial.xml    \
+       tutorial2/libxslt_pipes.xml     \
+       xsltproc.xml
+
+DOCBOOK_HTML = http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl
 
 rebuild:
        cd $(srcdir) && ./apibuild.py
        cd $(srcdir) && $(XSLTPROC) checkapisym.xsl libxslt-api.xml
        cd $(srcdir) && $(XSLTPROC) -o ../libxslt/libxslt.syms syms.xsl symbols.xml
        cd $(srcdir) && $(XSLTPROC) --nonet xsltproc.xml
-       cd $(srcdir) && $(XSLTPROC) --nonet -o xsltproc.html 
http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl xsltproc.xml
+       cd $(srcdir) && $(XSLTPROC) --nonet -o xsltproc.html $(DOCBOOK_HTML) xsltproc.xml
        cd $(srcdir) && $(XSLTPROC) -o $(WIN32_DIR)/libxslt.def.src \
          --nonet $(WIN32_DIR)/defgen.xsl libxslt-api.xml
        cd $(srcdir) && $(XSLTPROC) -o $(WIN32_DIR)/libexslt.def.src \
          --nonet $(WIN32_DIR)/defgen.xsl EXSLT/libexslt-api.xml
 
-wildcards =                            \
-       *.1                             \
-       *.html                          \
-       *.xsl                           \
-       tutorial/images/callouts/*.png  \
-       tutorial*/libxslt*
-
-# This target verifies that EXTRA_DIST contains all the files matched by
-# the above list of wildcards. Note that this will only work properly when
-# srcdir = builddir.
-#
-check-extra-dist:
-       @for a in $(wildcards) ; do \
-               if test ! -f "$$a" ; then \
-                       echo "not found: $$a" ; \
-                       continue ; \
-               fi ; \
-               present= ; \
-               for b in $(EXTRA_DIST) ; do \
-                       test "$$a" = "$$b" && present=1 && break ; \
-               done ; \
-               test -n "$$present" || echo "not in EXTRA_DIST: $$a" ; \
-       done
-
-.PHONY : rebuild check-extra-dist
+.PHONY: rebuild