improved z3py installation

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

python/README-linux.txt

@@ -1,26 +0,0 @@
-In your Python application you should include:
-
-   from z3 import *
-
-Installing the Z3 Python bindings
-
-Option 1: Install Z3 Python bindings in your python distribution
-----------------------------------------------------------------
-
-To install the Z3 python bindings in your system, use
-   sudo make install-python 
-in the Z3 root directory.
-After installing the Z3 python bindings, you can try the example application
-   python example.py
-
-Option 2: Set PYTHONPATH
-------------------------
-
-You may also use Z3Py by including this directory in your PYTHONPATH.
-Z3Py searches for libz3.so in set of predefined places that includes the directory where Z3Py is stored.
-You may also manually initialize Z3Py using the command z3.init(path-to-libz3.so)
-
-Learn more about Z3Py at:
-http://rise4fun.com/Z3Py/tutorial/guide
-
-

python/README-osx.txt

@@ -1,24 +0,0 @@
-In your Python application you should include:
-
-   from z3 import *
-
-Installing the Z3 Python bindings
-
-Option 1: Install Z3 Python bindings in your python distribution
-----------------------------------------------------------------
-
-To install the Z3 python bindings in your system, use
-   sudo make install-python 
-in the Z3 root directory.
-After installing the Z3 python bindings, you can try the example application
-   python example.py
-
-Option 2: Set PYTHONPATH
-------------------------
-
-You may also use Z3Py by including this directory in your PYTHONPATH.
-Z3Py searches for libz3.dylib in set of predefined places that includes the directory where Z3Py is stored.
-You may also manually initialize Z3Py using the command z3.init(path-to-libz3.dylib)
-
-Learn more about Z3Py at:
-http://rise4fun.com/Z3Py/tutorial/guide

python/README-win.txt

@@ -1,16 +0,0 @@
-To run the test script execute:
-python example.py
-
-To create scripts using Z3Py, the Z3 python directory must be in your PYTHONPATH.
-If you copy the z3*.py files to a different directory, you must also copy the z3.dll.
-Remark: if you are using python 32-bit, you must copy the z3.dll in the bin directory. 
-If you are using python 64-bit, you must copy the z3.dll in the x64 directory.
-
-You may also manually initialize Z3Py using the command z3.init(path-to-z3.dll)
-
-In your Python application you should include:
-
-   from z3 import *
-
-Learn more about Z3Py at:
-http://rise4fun.com/Z3Py/tutorial/guide

python/README.txt

@@ -1,5 +1,20 @@
-To run the test script execute:
-python example.py
-
-Learn more about Z3Py at:
+You can learn more about Z3Py at:
 http://rise4fun.com/Z3Py/tutorial/guide
+
+On Windows, you must build Z3 before using Z3Py.
+To build Z3, you should executed the following command
+in the Z3 root directory at the Visual Studio Command Prompt
+
+       msbuild /p:configuration=external
+
+If you are using a 64-bit Python interpreter, you should use
+
+       msbuild /p:configuration=external /p:platform=x64
+
+
+On Linux and OSX, you must install Z3Py, before trying example.py.
+To install Z3Py on Linux and OSX, you should execute the following 
+command in the Z3 root directory
+
+        sudo make install-z3py
+

python/exec-linux.sh

@@ -1,2 +0,0 @@
-export PYTHONPATH=../../python:$PYTHONPATH
-python example.py

python/exec-osx.sh

@@ -1,2 +0,0 @@
-export PYTHONPATH=../../python:$PYTHONPATH
-python example.py

python/run-linux.sh

@@ -1,2 +0,0 @@
-export LD_LIBRARY_PATH=.
-python example.py

python/run-osx.sh

@@ -1,2 +0,0 @@
-export LD_LIBRARY_PATH=.
-python example.py

python/run.sh

@@ -1,2 +0,0 @@
-export LD_LIBRARY_PATH=.
-python example.py

python/z3core.py

@@ -8,10 +8,9 @@ def _find_lib():
   _dir = os.path.dirname(os.path.abspath(__file__))
   libs = ['z3.dll', 'libz3.so', 'libz3.dylib']
   if sys.maxsize > 2**32:
-     winlibdir = 'x64'
+    locs = [_dir, '%s%s..%sx64%sexternal' % (_dir, os.sep, os.sep, os.sep), '%s%s..%sbin%sexternal' % (_dir, os.sep, os.sep, os.sep)]
   else:
-     winlibdir = 'bin'
-  locs = [_dir, '%s%s..%s%s' % (_dir, os.sep, os.sep, winlibdir), '%s%s..%slib' % (_dir, os.sep, os.sep), '%s%s..%sexternal' % (_dir, os.sep, os.sep), '%s%s..%sbin%sexternal' % (_dir, os.sep, os.sep, os.sep)]
+    locs = [_dir, '%s%s..%sexternal' % (_dir, os.sep, os.sep), '%s%s..%sbin%sexternal' % (_dir, os.sep, os.sep, os.sep)]
   for loc in locs:
     for lib in libs:
       f = '%s%s%s' % (loc, os.sep, lib)