* build extensions last since this seems to be most likely to fail

[rrdtool.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index c9732df..3af4293 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,3 +1,4 @@
+
 dnl RRDtool AutoConf script ... 
 dnl ---------------------------
 dnl
@@ -496,18 +497,22 @@ AC_PATH_PROG(RUBY, ruby, no)
 AC_ARG_ENABLE(ruby,[  --disable-ruby          do not build the ruby modules],
 [],[enable_ruby=yes])
 
+AC_MSG_CHECKING(if ruby modules can be built)
 
 if test "x$RUBY" = "xno" -o  x$enable_ruby = xno; then
        COMP_RUBY=
+       AC_MSG_RESULT(No .. Ruby not found or disabled)
 else
-       COMP_RUBY="ruby"
-
+       if $RUBY -e 'require "mkmf"' >/dev/null 2>&1; then
+               COMP_RUBY="ruby"
+               AC_MSG_RESULT(YES)
+       else
+               COMP_RUBY=
+               AC_MSG_RESULT(Ruby found but mkmf is missing! Install the -dev package)         
+       fi                              
 fi
 
 
-AC_MSG_CHECKING(Ruby Modules to build)
-AC_MSG_RESULT(${COMP_RUBY:-No Ruby Modules will be built})
-
 dnl pass additional ruby options when generating Makefile from Makefile.PL
 AC_ARG_ENABLE(ruby-site-install,
 [  --enable-ruby-site-install   by default the rrdtool ruby modules are installed