[Lldb-commits] [lldb] 3f03877 - [LLDB] Don't use the local python to set a default for LLDB_PYTHON_RELATIVE_PATH when cross compiling.

[Martin Storsjö via lldb-commits]

Author: Martin Storsjö
Date: 2021-05-11T14:04:41+03:00
New Revision: 3f03877f5a838973d0d22f6b45c112228319f4da

URL: https://github.com/llvm/llvm-project/commit/3f03877f5a838973d0d22f6b45c112228319f4da
DIFF: https://github.com/llvm/llvm-project/commit/3f03877f5a838973d0d22f6b45c112228319f4da.diff

LOG: [LLDB] Don't use the local python to set a default for LLDB_PYTHON_RELATIVE_PATH when cross compiling.

Differential Revision: https://reviews.llvm.org/D101903

Added: 
    

Modified: 
    lldb/CMakeLists.txt

Removed: 
    


################################################################################
diff  --git a/lldb/CMakeLists.txt b/lldb/CMakeLists.txt
index b5633e21c56a3..2bb05c1e220b3 100644
--- a/lldb/CMakeLists.txt
+++ b/lldb/CMakeLists.txt
@@ -31,13 +31,22 @@ if (WIN32)
 endif()
 
 if (LLDB_ENABLE_PYTHON)
-  execute_process(
-    COMMAND ${Python3_EXECUTABLE}
-        -c "import distutils.sysconfig; print(distutils.sysconfig.get_python_lib(True, False, ''))"
-    OUTPUT_VARIABLE LLDB_PYTHON_DEFAULT_RELATIVE_PATH
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
+  if (NOT CMAKE_CROSSCOMPILING)
+    execute_process(
+      COMMAND ${Python3_EXECUTABLE}
+          -c "import distutils.sysconfig; print(distutils.sysconfig.get_python_lib(True, False, ''))"
+      OUTPUT_VARIABLE LLDB_PYTHON_DEFAULT_RELATIVE_PATH
+      OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+    file(TO_CMAKE_PATH ${LLDB_PYTHON_DEFAULT_RELATIVE_PATH} LLDB_PYTHON_DEFAULT_RELATIVE_PATH)
+  else ()
+    if ("${LLDB_PYTHON_RELATIVE_PATH}" STREQUAL "")
+      message(FATAL_ERROR
+        "Crosscompiling LLDB with Python requires manually setting
+        LLDB_PYTHON_RELATIVE_PATH.")
+    endif ()
+  endif ()
 
-  file(TO_CMAKE_PATH ${LLDB_PYTHON_DEFAULT_RELATIVE_PATH} LLDB_PYTHON_DEFAULT_RELATIVE_PATH)
   set(LLDB_PYTHON_RELATIVE_PATH ${LLDB_PYTHON_DEFAULT_RELATIVE_PATH}
     CACHE STRING "Path where Python modules are installed, relative to install prefix")
 endif ()