Issue 5000/1: Add checking Ghostscript 9.20+ and Extract PDFmark

This commit adds checking Ghostscript 9.20+ and Extract PDFmark.
They can reduce the disk space required for document building.
They also can reduce the size of generated PDF document files.

Even if they are missing, you can build documents.

Ghostscript 9.20+:
It is necessary for string named destinations.
Ghostscript 9.19 and prior cannot handle them.
http://bugs.ghostscript.com/show_bug.cgi?id=696974

Extract PDFmark:
It is necessary for preserving named destinations and page mode.
https://github.com/trueroad/extractpdfmark
http://www.ctan.org/pkg/extractpdfmark

diff --git a/config.make.in b/config.make.in
index d376a59f481c18a385d8b9703617d94ab8aa4662..3bf17671a029f0b3123277d98e0afb322fe415d9 100644 (file)
--- a/config.make.in
+++ b/config.make.in
@@ -38,6 +38,8 @@ PACKAGE_NAME = @PACKAGE_NAME@
 
 HOST_ARCH=@HOST_ARCH@
 
+USE_EXTRACTPDFMARK=@USE_EXTRACTPDFMARK@
+
 ################################################################
 ## FILESYSTEM
 ################################################################
@@ -110,12 +112,14 @@ DBLATEX = @DBLATEX@
 DEFINES = @DEFS@ @DEFINES@
 DEFS = @DEFS@
 DOCUMENTATION = @DOCUMENTATION@
+EXTRACTPDFMARK = @EXTRACTPDFMARK@
 FIND = @FIND@
 FCLIST = @FCLIST@
 FLEX = @FLEX@
 FLEXLEXER_FILE = @FLEXLEXER_FILE@
 FONTFORGE = @FONTFORGE@
 GROFF = @GROFF@
+GS920 = @GS920@
 GUILE = @GUILE@
 GUILE_CFLAGS = @GUILE_CFLAGS@
 GUILE_CONFIG = @GUILE_CONFIG@

diff --git a/configure.ac b/configure.ac
index 19ffd18bf31663cda5177993589e8f7d6edcb405..d77ea1588120c1dccbf0980cded2798251579cc5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -281,6 +281,30 @@ fi
 
 STEPMAKE_PATH_PROG(GHOSTSCRIPT, gs, $DOCUMENTATION_REQUIRED, 8.60)
 
+AC_SUBST(GS920)
+AC_SUBST(EXTRACTPDFMARK)
+AC_SUBST(USE_EXTRACTPDFMARK)
+STEPMAKE_PROGS(GS920, gs, OPTIONAL, 9.20)
+STEPMAKE_PROGS(EXTRACTPDFMARK, extractpdfmark, OPTIONAL)
+req=`STEPMAKE_NUMERIC_VERSION(9.20)`
+USE_EXTRACTPDFMARK=yes
+if test "$GS920_VERSION" -lt "$req"; then
+    GS920=
+    USE_EXTRACTPDFMARK=no
+fi
+if test "$EXTRACTPDFMARK" != "extractpdfmark"; then
+    EXTRACTPDFMARK=
+    USE_EXTRACTPDFMARK=no
+fi
+if test "$USE_EXTRACTPDFMARK" != "yes"; then
+    STEPMAKE_ADD_ENTRY(OPTIONAL,
+        ["(Optionally using Ghostscript >= 9.20 together with"])
+    STEPMAKE_ADD_ENTRY(OPTIONAL,
+        [" Extract PDFmark can significantly reduce the disk space required"])
+    STEPMAKE_ADD_ENTRY(OPTIONAL,
+        [" for building the documentation and the final PDF files.)"])
+fi
+
 STEPMAKE_PROGS(MAKEINFO, makeinfo, REQUIRED, 4.11)
 STEPMAKE_PROGS(TEXI2HTML, texi2html, $DOCUMENTATION_REQUIRED, 1.82)
 STEPMAKE_PROGS(DBLATEX, dblatex, $DOCUMENTATION_REQUIRED, 0.1.4)