ruby: use in-tree notmuch library

Currently it simply finds any library available, and if notmuch is
installed in the system, it would give priority to that library.

Let's implement our own helper functions to link directly to the local
library, and give priority to the local header file.

Also, add an option to properly check if there are missing symbols.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

diff --git a/bindings/ruby/extconf.rb b/bindings/ruby/extconf.rb
index 7b9750f2e4aadbed705d968f8654a34f0b65bebd..6160db26e2ea10286fb16065c2c030ea90a0c07e 100644 (file)
--- a/bindings/ruby/extconf.rb
+++ b/bindings/ruby/extconf.rb
@@ -5,9 +5,26 @@
 
 require 'mkmf'
 
-# Notmuch Library
-find_header('notmuch.h', '../../lib')
-find_library('notmuch', 'notmuch_database_create', '../../lib')
+dir = File.join('..', '..', 'lib')
+
+# includes
+$INCFLAGS = "-I#{dir} #{$INCFLAGS}"
+
+# make sure there are no undefined symbols
+$LDFLAGS += ' -Wl,--no-undefined'
+
+def have_local_library(lib, path, func, headers = nil)
+  checking_for checking_message(func, lib) do
+    lib = File.join(path, lib)
+    if try_func(func, lib, headers)
+      $LOCAL_LIBS += lib
+    end
+  end
+end
+
+if not have_local_library('libnotmuch.so', dir, 'notmuch_database_create', 'notmuch.h')
+  exit 1
+end
 
 # Create Makefile
 dir_config('notmuch')