virtualpg 1.0.1

- Upgrade to version 1.0.1
- Take advantage of compile options for non-canonical postgresql
  installs
- Fix link file extension to use dylib
- Add test of loading extension for sqlite3
- Closes Homebrew/legacy-homebrew#32042

Formula/virtualpg.rb

@@ -2,16 +2,31 @@
 
 class Virtualpg < Formula
   homepage 'https://www.gaia-gis.it/fossil/virtualpg/index'
-  url 'http://www.gaia-gis.it/gaia-sins/virtualpg-1.0.0.tar.gz'
-  sha1 '8c7959beb1cff78d3c00255fe73c748d1a5b250b'
+  url 'http://www.gaia-gis.it/gaia-sins/virtualpg-1.0.1.tar.gz'
+  sha1 '20849c368a2bef3e8532765589d0b6b445d56908'
 
   depends_on 'libspatialite'
   depends_on 'postgis'
 
   def install
+
+    # New SQLite3 extension won't load via SELECT load_extension('mod_virtualpg');
+    # unless named mod_virtualpg.dylib (should actually be mod_virtualpg.bundle)
+    # See: https://groups.google.com/forum/#!topic/spatialite-users/EqJAB8FYRdI
+    # needs upstream fixes in both SQLite and libtool
+    inreplace "configure",
+    "shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'",
+    "shrext_cmds='.dylib'"
+
     system "./configure", "--enable-shared=yes",
                           "--disable-dependency-tracking",
+                          "--with-pgconfig=#{Formula["postgresql"].opt_bin}/pg_config",
                           "--prefix=#{prefix}"
     system "make", "install"
   end
+
+  test do
+    # Verify mod_virtualpg extension can be loaded using Homebrew's SQLite
+    system "echo \"SELECT load_extension('#{opt_lib}/mod_virtualpg');\" | #{Formula["sqlite"].opt_bin}/sqlite3"
+  end
 end