From c88f81de2643ef14dbf9bde42055b468d85e45a1 Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Sun, 10 Feb 2013 20:44:43 +0100
Subject: make building docs optional. use --enable-docs to build docs.

---
 Makefile.am  |  2 +-
 configure.ac | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 2bfe1c6..21ad378 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,3 @@
-SUBDIRS = src vformat test doc
+SUBDIRS = src vformat test $(DOC_SUB)
 
 
diff --git a/configure.ac b/configure.ac
index ab68899..9d46ceb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,6 +23,20 @@ AC_FUNC_MKTIME
 AC_FUNC_STAT
 AC_CHECK_FUNCS([atexit memset strstr])
 
+AC_ARG_ENABLE([docs],
+            [AS_HELP_STRING([--enable-docs],
+            [build documentation (default is no)])],
+            [build_docs=true],
+            [build_docs=false])
+if test "$build_docs" = true; then
+            DOC_SUB=doc
+else
+            DOC_SUB=
+fi
+
+AM_CONDITIONAL([ENABLE_DOCS],[test "x$DOC_SUB" = "xdoc"])
+AC_SUBST([DOC_SUB])
+
 AC_OUTPUT([Makefile src/Makefile vformat/Makefile test/Makefile doc/Makefile])
 #AC_CONFIG_FILES([])
 
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