use LIBDIR for win buildbots

.jenkins/jenkins_buildbot_windows.bat

 set BUILDBOT_DIR=%WORKSPACE%\nightly_build
-set COMPILEDIR=C:\\Jenkins\\theano_cache\\buildbot_windows
+set COMPILEDIR=C:\Jenkins\theano_cache\buildbot_windows
 
 REM Set test reports using nosetests xunit
 set XUNIT=--with-xunit --xunit-file=
@@ -23,7 +23,7 @@ rmdir %LIBDIR% /s/q
 mkdir %LIBDIR%
 
 REM Build libgpuarray
-set PATH=%PATH%;C:\Program Files\CMake\bin
+set PATH=%PATH%;C:\Program Files\CMake\bin;C:\lib\cuda\bin
 mkdir libgpuarray\build
 cd libgpuarray\build
 cmake .. -DCMAKE_BUILD_TYPE=%GPUARRAY_CONFIG% -G "NMake Makefiles"
@@ -31,8 +31,8 @@ nmake
 cd ..\..
 
 REM Copy lib and export paths
-C:\Windows\System32\robocopy /E libgpuarray C:\Jenkins\lib\buildbot_win\libgpuarray > nul
-set PATH=%PATH%;C:\Jenkins\lib\buildbot_win\libgpuarray\lib;C:\lib\cuda\bin
+C:\Windows\System32\robocopy /E libgpuarray $LIBDIR$\libgpuarray > nul
+set PATH=%PATH%;$LIBDIR$\libgpuarray\lib
 
 REM Set conda python path
 set PATH=%PATH%;C:\ProgramData\Miniconda2;C:\ProgramData\Miniconda2\Library\mingw-w64\bin;C:\ProgramData\Miniconda2\Library\usr\bin;C:\ProgramData\Miniconda2\Library\bin;C:\ProgramData\Miniconda2\Scripts
@@ -52,5 +52,5 @@ echo "Directory of stdout/stderr %BUILDBOT_DIR%"
 REM Fast run and float32
 set FILE=%BUILDBOT_DIR%\theano_python2_fastrun_f32_tests.xml
 set NAME=fastrun_f32
-set THEANO_FLAGS=%THEANO_FLAGS%,compiledir=%COMPILEDIR%,mode=FAST_RUN,warn.ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise,floatX=float32,dnn.include_path=C:\\lib\\cuda\\include,dnn.library_path=C:\\lib\\cuda\\lib\\x64,gcc.cxxflags='-I"C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include" -I"C:\\Jenkins\\lib\\buildbot_win\\libgpuarray\\src" -L"C:\\Program Files\\NVIDIA GPU Computing Toolkit\CUDA\\v8.0\\lib\\x64" -LC:\\Jenkins\\lib\\buildbot_win\\libgpuarray\\lib'
+set THEANO_FLAGS=%THEANO_FLAGS%,compiledir=%COMPILEDIR:\=\\%,mode=FAST_RUN,warn.ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise,floatX=float32,dnn.include_path=C:\\lib\\cuda\\include,dnn.library_path=C:\\lib\\cuda\\lib\\x64,gcc.cxxflags='-I"C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include" -I%LIBDIR:\=\\%\\src -L"C:\\Program Files\\NVIDIA GPU Computing Toolkit\CUDA\\v8.0\\lib\\x64" -L%LIBDIR:\=\\%\\lib'
 python bin\theano-nose %THEANO_PARAM% %XUNIT%%FILE% %SUITE%%NAME%

.jenkins/jenkins_pr_win.bat

 REM Set cache dir and copy from master
-set COMPILEDIR=C:\\Jenkins\\theano_cache\\pr_win
-C:\Windows\System32\robocopy /E/purge C:\Jenkins\theano_cache\buildbot_windows C:\Jenkins\theano_cache\pr_win > nul
+set COMPILEDIR=%WORKSPACE%\cache
+C:\Windows\System32\robocopy /E/purge C:\Jenkins\theano_cache\buildbot_windows %COMPILEDIR% > nul
 
 set THEANO_FLAGS=init_gpu_device=cuda
 
@@ -18,7 +18,7 @@ rmdir %LIBDIR% /s/q
 mkdir %LIBDIR%
 
 REM Build libgpuarray
-set PATH=%PATH%;C:\Program Files\CMake\bin
+set PATH=%PATH%;C:\Program Files\CMake\bin;C:\lib\cuda\bin
 mkdir libgpuarray\build
 cd libgpuarray\build
 cmake .. -DCMAKE_BUILD_TYPE=%GPUARRAY_CONFIG% -G "NMake Makefiles"
@@ -26,15 +26,15 @@ nmake
 cd ..\..
 
 REM Copy lib and export paths
-C:\Windows\System32\robocopy /E libgpuarray C:\Jenkins\lib\pr_win\libgpuarray > nul
-set PATH=%PATH%;C:\Jenkins\lib\pr_win\libgpuarray\lib;C:\lib\cuda\bin
+C:\Windows\System32\robocopy /E libgpuarray %LIBDIR%\libgpuarray > nul
+set PATH=%PATH%;%LIBDIR%\libgpuarray\lib
 
 REM Set conda python path
 set PATH=%PATH%;C:\ProgramData\Miniconda2;C:\ProgramData\Miniconda2\Library\mingw-w64\bin;C:\ProgramData\Miniconda2\Library\usr\bin;C:\ProgramData\Miniconda2\Library\bin;C:\ProgramData\Miniconda2\Scripts
 
 REM Build the pygpu modules
 cd libgpuarray
-python setup.py build_ext --inplace -I%LIBDIR%\include -L%LIBDIR%\lib
+python setup.py build_ext --inplace
 mkdir %LIBDIR%\lib\python
 set PYTHONPATH=%PYTHONPATH%;%LIBDIR%\lib\python
 REM Then install
@@ -44,5 +44,5 @@ cd ..
 
 set THEANO_PARAM=theano --with-timer --timer-top-n 10 --with-xunit --xunit-file=theano_win_pr_tests.xml
 set NAME=pr_win
-set THEANO_FLAGS=%THEANO_FLAGS%,mode=FAST_RUN,floatX=float32,on_opt_error=raise,on_shape_error=raise,cmodule.age_thresh_use=604800,compiledir=%COMPILEDIR%,dnn.include_path=C:\\lib\\cuda\\include,dnn.library_path=C:\\lib\\cuda\\lib\\x64,gcc.cxxflags='-I"C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include" -I"C:\\Jenkins\\lib\\pr_win\\libgpuarray\\src" -L"C:\\Program Files\\NVIDIA GPU Computing Toolkit\CUDA\\v8.0\\lib\\x64" -LC:\\Jenkins\\lib\\pr_win\\libgpuarray\\lib'
+set THEANO_FLAGS=%THEANO_FLAGS%,mode=FAST_RUN,floatX=float32,on_opt_error=raise,on_shape_error=raise,cmodule.age_thresh_use=604800,compiledir=%COMPILEDIR:\=\\%,dnn.include_path=C:\\lib\\cuda\\include,dnn.library_path=C:\\lib\\cuda\\lib\\x64,gcc.cxxflags='-I"C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v8.0\\include" -I%LIBDIR:\=\\%\\src -L"C:\\Program Files\\NVIDIA GPU Computing Toolkit\CUDA\\v8.0\\lib\\x64" -L%LIBDIR:\=\\%\\lib'
 python bin\theano-nose %THEANO_PARAM% --xunit-testsuite-name=%NAME%
\ No newline at end of file