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[py3] Teach the CMake build to reject Python versions older than 2.7.

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Continue to require Python 2 however as recent experiments suggest
LLDB's build requires it.

llvm-svn: 224948
This commit is contained in:
Chandler Carruth 2014-12-29 19:36:05 +00:00
parent ded9e91a9b
commit d8d7fb64ee
1 changed files with 7 additions and 1 deletions
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8
CMakeLists.txt
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@ -344,7 +344,9 @@ set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}")
include(HandleLLVMOptions)
# Verify that we can find a Python 2 interpreter. Python 3 is unsupported.
set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
# FIXME: We should support systems with only Python 3, but that requires work
# on LLDB.
set(Python_ADDITIONAL_VERSIONS 2.7)
include(FindPythonInterp)
if( NOT PYTHONINTERP_FOUND )
message(FATAL_ERROR
@ -353,6 +355,10 @@ if( NOT PYTHONINTERP_FOUND )
Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
endif()
if( ${PYTHON_VERSION_STRING} VERSION_LESS 2.7 )
message(FATAL_ERROR "Python 2.7 or newer is required")
endif()
######
# LLVMBuild Integration
#