Use KICAD_DATA for data path lookup in scripting

Fixes https://gitlab.com/kicad/code/kicad/issues/7036

CMakeLists.txt

@@ -490,8 +490,14 @@ if( NOT APPLE )
     set( KICAD_BIN bin
         CACHE PATH "Location of KiCad binaries." )
 
+    # Do not make these variables "PATH" b/c cmake will truncate them and we need the full path
+    if( NOT IS_ABSOLUTE ${CMAKE_INSTALL_DATADIR} )
+        set( KICAD_DATA ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_DATADIR}/kicad
+            CACHE STRING "Location of KiCad data files." )
+    else()
         set( KICAD_DATA ${CMAKE_INSTALL_DATADIR}/kicad
-        CACHE PATH "Location of KiCad data files." )
+            CACHE STRING "Location of KiCad data files." )
+    endif()
 
     if( WIN32 )
         set( KICAD_PLUGINS ${KICAD_BIN}/scripting/plugins

CMakeModules/config.h.cmake

@@ -77,6 +77,9 @@
 /// Allows scripts install directory to be referenced by the program code.
 #define PYTHON_DEST                     "@PYTHON_DEST@"
 
+/// Allows scripts install directory to be referenced by the program code.
+#define KICAD_DATA                     "@KICAD_DATA@"
+
 /// ngspice version string detected by pkg-config when available.
 #cmakedefine NGSPICE_BUILD_VERSION           "@NGSPICE_BUILD_VERSION@"
 

pcbnew/swig/python_scripting.cpp

@@ -41,6 +41,8 @@
 
 #include <wx/app.h>
 
+#include <config.h>
+
 /* init functions defined by swig */
 
 #if PY_MAJOR_VERSION >= 3
@@ -658,7 +660,7 @@ wxString PyScriptingPath( bool aUserPath )
 #if defined( __WXMAC__ )
             path = GetOSXKicadDataDir() + wxT( "/scripting" );
 #else
-            path = Pgm().GetExecutablePath() + wxT( "../share/kicad/scripting" );
+            path = Pgm().GetExecutablePath() + KICAD_DATA + wxS( "/scripting" );
 #endif
         }
     }