If libjpeg-turbo is configured with a non-default prefix, such as /usr, then use the docdir variable defined by autoconf 2.60 and later, if available.  This will, for instance, install the documentation under /usr/share/doc/libjpeg-turbo by default if prefix=/usr, unless docdir is overridden.  When using earlier versions of autoconf, docdir is set to ${datadir}/doc, as it always has been.


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1535 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/Makefile.am b/Makefile.am
index 956f30d..fe5c319 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -158,11 +158,10 @@
 DOCS= coderules.txt jconfig.txt change.log rdrle.c wrrle.c BUILDING.txt \
 	ChangeLog.txt
 
-docdir = $(datadir)/doc
 dist_doc_DATA = README README-turbo.txt libjpeg.txt structure.txt usage.txt \
 	wizard.txt
 
-exampledir = $(datadir)/doc
+exampledir = $(docdir)
 dist_example_DATA = example.c