[Plplot-cvs] SF.net SVN: plplot:[12000] trunk/CMakeLists.txt

[<ai...@us...>]

Revision: 12000
          http://plplot.svn.sourceforge.net/plplot/?rev=12000&view=rev
Author:   airwin
Date:     2011-10-26 22:36:55 +0000 (Wed, 26 Oct 2011)
Log Message:
-----------
Bump minimum version of CMake to 2.8.2 for Linux and 2.8.6 for
all other platforms as discussed on the plplot-devel mailing list.

I have just confirmed that CMake-2.8.6 gives good results on Linux
(using the ctest test), but that also needs to be tested on our other
platforms.  As soon as that platform testing is complete, I plan to
remove the CMake-2.6.x logic and files that are currently part of our
build system.

Modified Paths:
--------------
    trunk/CMakeLists.txt

Modified: trunk/CMakeLists.txt
===================================================================
--- trunk/CMakeLists.txt	2011-10-21 12:37:41 UTC (rev 11999)
+++ trunk/CMakeLists.txt	2011-10-26 22:36:55 UTC (rev 12000)
@@ -38,13 +38,25 @@
 project(plplot C)
 
 message(STATUS "CMake version = ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}")
+message(STATUS "CMAKE_SYSTEM_NAME = ${CMAKE_SYSTEM_NAME}")
 
-# Note that the variable MSYS is first known at this point in the
-# build process in case have different minimum version for that case.
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  # We prefer to support only the latest CMake version because it
+  # tends to be more free of issues and more consistent with recent
+  # software releases of software that PLplot depends on than earlier versions.
+  # However, as a special concession to our modern (not enterprise or
+  # LTS) Linux distro users so they can avoid a download of recent CMake,
+  # we allow them to use the system version of
+  # CMake which at this time (2011-10) is typically 2.8.2 or later.
+  cmake_minimum_required(VERSION 2.8.2 FATAL_ERROR)
+else(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  # For non-Linux platforms we prefer to support only the most recent
+  # CMake version since that tends to be most free of issues and most
+  # consistent with releases of software that PLplot depends on.  The
+  # most recently released CMake is 2.8.6 at this time (2011-10).
+  cmake_minimum_required(VERSION 2.8.6 FATAL_ERROR)
+endif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
 
-# Version 2.6.4 or above of cmake is currently required for all platforms.
-cmake_minimum_required(VERSION 2.6.4 FATAL_ERROR)
-
 #foreach(policy RANGE 0 9)
 #  cmake_policy(GET CMP000${policy} policy_result)
 #  message(STATUS "Policy CMP000${policy} is ${policy_result}")

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