[babl] Add --disable-docs option to configure

[Daniel Sabo <daniels src gnome org>]

commit 31dd292736dc2ebf461d61f29b984fa84550fd15
Author: Daniel Sabo <DanielSabo gmail com>
Date:   Thu Feb 7 11:24:12 2013 -0800

    Add --disable-docs option to configure

 Makefile.am  |    7 +++++--
 configure.ac |    7 +++++++
 2 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 19df326..7008414 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,8 +4,11 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 SUBDIRS = \
        babl            \
        extensions      \
-       tests           \
-       docs
+       tests
+
+if ENABLE_DOCS
+SUBDIRS+= docs
+endif
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = babl.pc
diff --git a/configure.ac b/configure.ac
index b0697ab..ce5a872 100644
--- a/configure.ac
+++ b/configure.ac
@@ -172,6 +172,13 @@ AM_CONDITIONAL(HAVE_RSVG, test "x$RSVG" != "xno")
 AC_PATH_PROG(W3M, w3m, no)
 AM_CONDITIONAL(HAVE_W3M, test "x$W3M" != "xno")
 
+dnl disable docs generation.
+AC_ARG_ENABLE([docs],
+              [  --disable-docs          disable docs generation (default=no)],,
+              enable_docs="yes")
+
+AM_CONDITIONAL(ENABLE_DOCS, test "x$enable_docs" = "xyes")
+
 ###########################
 # Check target architecture
 ###########################