doc: make stylesheets configurable

Before this change, all stylesheets were hardcoded.
With this change, stylesheets can be defined at configure stage.

* configure.ac: Add new options to configure stylesheets:
--enable-html-stylesheet=FILE
--enable-txt-stylesheet=FILE
--enable-pdf-stylesheet=FILE
--enable-man-stylesheet=FILE
* doc/custom-html.xsl: Rename to doc/custom-html.xsl.in, parametrize html
stylesheet.
* doc/custom-man.xsl: Rename to doc/custom-man.xsl.in, parametrize man
stylesheet.
* doc/.gitignore: Add custom-man.xsl and custom-html.xsl.
* doc/adg/Makefile.am: Use stylesheet variables.
* doc/mwg/Makefile.am: Likewise.
* doc/sag/Makefile.am: Likewise.

Resolves: https://github.com/linux-pam/linux-pam/pull/499

6 files changed, 13 insertions, 11 deletions

diff --git a/doc/.gitignore b/doc/.gitignore
index e04c8de3..ab4604bf 100644
--- a/doc/.gitignore
+++ b/doc/.gitignore
@@ -2,3 +2,5 @@ pam.sgml
 MODULES-SGML
 /*/*.txt
 /*/html/
+custom-man.xsl
+custom-html.xsl
diff --git a/doc/adg/Makefile.am b/doc/adg/Makefile.am
index 77bd7a99..b795b1a4 100644
--- a/doc/adg/Makefile.am
+++ b/doc/adg/Makefile.am
@@ -21,7 +21,7 @@ if ENABLE_GENERATE_PDF
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
-	http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_ADG.fo
+	$(PDF_STYLESHEET) $< > Linux-PAM_ADG.fo
 	$(FO2PDF) Linux-PAM_ADG.fo $@
 else
 	echo "No fo2pdf processor installed, skip PDF generation"
@@ -33,7 +33,7 @@ Linux-PAM_ADG.txt: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
-	  http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@
+	  $(TXT_STYLESHEET) $< | $(BROWSER) > $@
 
 html/Linux-PAM_ADG.html: $(XMLS) $(DEP_XMLS)
 	@test -d html || mkdir -p html
@@ -46,7 +46,7 @@ html/Linux-PAM_ADG.html: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
 	  --stringparam chunker.output.encoding UTF-8 \
-	  http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $<
+	  $(HTML_STYLESHEET) $<
 
 distclean-local:
 	-rm -rf html Linux-PAM_ADG.txt Linux-PAM_ADG.pdf
diff --git a/doc/custom-html.xsl b/doc/custom-html.xsl.in
index fdd5df7d..b2eaf150 100644
--- a/doc/custom-html.xsl
+++ b/doc/custom-html.xsl.in
@@ -3,7 +3,7 @@
   xmlns:ss="http://docbook.sf.net/xmlns/string.subst/1.0"
   xmlns:exsl="http://exslt.org/common" version="1.0">
 
-  <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl"/>
+  <xsl:import href="HTML_STYLESHEET"/>
   <xsl:param name="vendordir"/>
 
   <xsl:template match="filename">
diff --git a/doc/custom-man.xsl b/doc/custom-man.xsl.in
index a3408e6c..258627bf 100644
--- a/doc/custom-man.xsl
+++ b/doc/custom-man.xsl.in
@@ -1,6 +1,6 @@
 <?xml version='1.0'?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ss="http://docbook.sf.net/xmlns/string.subst/1.0" version="1.0">
-  <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/manpages/profile-docbook.xsl"/>
+  <xsl:import href="MAN_STYLESHEET"/>
   <xsl:param name="vendordir"/>
 
   <xsl:param name="man.string.subst.map.local.pre">
diff --git a/doc/mwg/Makefile.am b/doc/mwg/Makefile.am
index 2bbb2d0b..688e6cb3 100644
--- a/doc/mwg/Makefile.am
+++ b/doc/mwg/Makefile.am
@@ -21,7 +21,7 @@ if ENABLE_GENERATE_PDF
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
-	http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_MWG.fo
+	$(PDF_STYLESHEET) $< > Linux-PAM_MWG.fo
 	$(FO2PDF) Linux-PAM_MWG.fo $@
 else
 	echo "No fo2pdf processor installed, skip PDF generation"
@@ -33,7 +33,7 @@ Linux-PAM_MWG.txt: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
-	  http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@
+	  $(TXT_STYLESHEET) $< | $(BROWSER) > $@
 
 html/Linux-PAM_MWG.html: $(XMLS) $(DEP_XMLS)
 	@test -d html || mkdir -p html
@@ -46,7 +46,7 @@ html/Linux-PAM_MWG.html: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 3 --xinclude --nonet \
 	  --stringparam chunker.output.encoding UTF-8 \
-	  http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $<
+	  $(HTML_STYLESHEET) $<
 
 distclean-local:
 	-rm -rf html Linux-PAM_MWG.txt Linux-PAM_MWG.pdf
diff --git a/doc/sag/Makefile.am b/doc/sag/Makefile.am
index 31816aa0..84fd383f 100644
--- a/doc/sag/Makefile.am
+++ b/doc/sag/Makefile.am
@@ -22,7 +22,7 @@ if ENABLE_GENERATE_PDF
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 2 --xinclude --nonet \
-	http://docbook.sourceforge.net/release/xsl/current/fo/docbook.xsl $< > Linux-PAM_SAG.fo
+	$(PDF_STYLESHEET) $< > Linux-PAM_SAG.fo
 	$(FO2PDF) Linux-PAM_SAG.fo $@
 else
 	echo "No fo2pdf processor installed, skip PDF generation"
@@ -34,7 +34,7 @@ Linux-PAM_SAG.txt: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.autolabel 1 \
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 2 --xinclude --nonet \
-	  http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl $< | $(BROWSER) > $@
+	  $(TXT_STYLESHEET) $< | $(BROWSER) > $@
 
 html/Linux-PAM_SAG.html: $(XMLS) $(DEP_XMLS)
 	@test -d html || mkdir -p html
@@ -47,7 +47,7 @@ html/Linux-PAM_SAG.html: $(XMLS) $(DEP_XMLS)
 	  --stringparam section.label.includes.component.label 1 \
 	  --stringparam toc.max.depth 2 --xinclude --nonet \
 	  --stringparam chunker.output.encoding UTF-8 \
-	  http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl $<
+	  $(HTML_STYLESHEET) $<
 
 distclean-local:
 	-rm -rf html Linux-PAM_SAG.txt Linux-PAM_SAG.pdf