Fixes to build with Python 3.13 only.

Remove old visual studio vars (Python 2.7 & 3.4).

Update build instructions.

Author: cztomczak

docs/Build-instructions.md

@@ -281,16 +281,21 @@ mkdir build/
 cd build/
 ```
 
-2) Download CEF binaries from [Spotify Automated Builds](https://cef-builds.spotifycdn.com/index.html).
+2) Install python dependencies:
+```
+pip install --upgrade -r ../tools/requirements.txt
+````
+
+3) Download CEF binaries from [Spotify Automated Builds](https://cef-builds.spotifycdn.com/index.html).
    The version of the binaries must match exactly the CEF version
    from the "cefpython/src/version/" directory (look for CEF_VERSION
    constant in .h file).
 
-3) Extract the downloaded archive eg.
+4) Extract the downloaded archive eg.
    "cef_binary_3.2883.1553.g80bd606_windows32.tar.bz2"
    in the build/ directory (using "extract here" option)
 
-4) Run the automate.py tool. After it completes you should see a new
+5) Run the automate.py tool. After it completes you should see a new
    directory eg. "cef55_3.2883.1553.g80bd606_win32/".
 ```
 python ../tools/automate.py --prebuilt-cef

tools/automate.py

@@ -677,10 +677,6 @@ def prepare_build_command(build_lib=False, vcvars=None):
     command = list()
     if platform.system() == "Windows":
         if build_lib:
-            if vcvars == VS2010_VCVARS:
-                # When using WinSDK 7.1 vcvarsall.bat is broken. Instead
-                # env variables are queried using setuptools.msvc.
-                return command
             if vcvars:
                 command.append(vcvars)
             else:
@@ -689,8 +685,6 @@ def prepare_build_command(build_lib=False, vcvars=None):
         else:
             if int(Options.cef_branch) >= 2704:
                 command.append(VS2015_VCVARS)
-            else:
-                command.append(VS2013_VCVARS)
             command.append(VS_PLATFORM_ARG)
         command.append("&&")
     return command
@@ -867,8 +861,6 @@ def copy_app(app):
 
 def get_available_python_compilers():
     all_python_compilers = OrderedDict([
-        ("2008", VS2008_VCVARS),
-        ("2010", VS2010_VCVARS),
         ("2015", VS2015_VCVARS),
     ])
     ret_compilers = OrderedDict()

tools/common.py

@@ -221,22 +221,6 @@
 
 VS2015_VCVARS = (r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat")
 
-# Required for building old CEF branches < 2704
-VS2013_VCVARS = ("C:\\Program Files (x86)\\Microsoft Visual Studio 12.0"
-                 "\\VC\\vcvarsall.bat")
-
-# Python 3.4
-VS2010_VCVARS = ("C:\\Program Files (x86)\\Microsoft Visual Studio 10.0"
-                 "\\VC\\vcvarsall.bat")
-
-# Python 2.7
-VS2008_VCVARS = ("C:\\Program Files (x86)\\Microsoft Visual Studio 9.0"
-                 "\\VC\\vcvarsall.bat")
-
-if WINDOWS and not os.path.exists(VS2008_VCVARS):
-    VS2008_VCVARS = (os.environ["LOCALAPPDATA"]+"\\Programs\\Common\\Microsoft"
-                     "\\Visual C++ for Python\\9.0\\vcvarsall.bat")
-
 # -----------------------------------------------------------------------------