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ENH: Clarify documentation of policy CMP0000 and its relationship with cmake_minimum_required.

This commit is contained in:
Brad King 2008-03-13 17:32:13 -04:00
parent 9a83ce6efc
commit a340fd42b8
2 changed files with 16 additions and 9 deletions
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4
Source/cmCMakeMinimumRequired.h
View File

@ -69,11 +69,11 @@ public:
" cmake_minimum_required(VERSION major[.minor[.patch]]\n"
" [FATAL_ERROR])\n"
"If the current version of CMake is lower than that required "
"it will stop processing the project and report an error.\n"
"it will stop processing the project and report an error. "
"When a version higher than 2.4 is specified the command implicitly "
"invokes\n"
" cmake_policy(VERSION major[.minor[.patch]])\n"
"which sets the cmake policy version level to the version specified.\n"
"which sets the cmake policy version level to the version specified. "
"When version 2.4 or lower is given the command implicitly invokes\n"
" cmake_policy(VERSION 2.4)\n"
"which enables compatibility features for CMake 2.4 and lower.\n"

21
Source/cmPolicies.cxx
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@ -90,15 +90,22 @@ cmPolicies::cmPolicies()
"A policy version number must be specified.",
"CMake requires that projects specify the version of CMake to which "
"they have been written. "
"This policy has been put in place to help CMake maintain backwards "
"compatibility with existing projects while allowing it to evolve "
"more rapidly.\n"
"This policy has been put in place to help existing projects build with "
"new CMake versions as it evolves. "
"The easiest way to specify a policy version number is to "
"call the cmake_policy command at the top of your CMakeLists file:\n"
"call the cmake_minimum_required command at the top of "
"your CMakeLists.txt file:\n"
" cmake_minimum_required(VERSION <major>.<minor>)\n"
"where \"<major>.<minor>\" is the version of CMake you want to support "
"(such as \"2.6\"). "
"The command will ensure that at least the given version of CMake is "
"running and set the policy version. "
"See documentation of cmake_minimum_required for details. "
"The cmake_policy command may be used at any time to set the "
"policy version:\n"
" cmake_policy(VERSION <major>.<minor>)\n"
"where <major>.<minor> is the version of CMake you want to support. "
"The cmake_minimum_required command may also be used; see its "
"documentation for details.",
"This is the recommended way to set the policy version except at "
"the very top of a project.",
2,6,0, cmPolicies::WARN
);