Here is a simple CMakeList.txt:

# ====================================================[
cmake_minimum_required(VERSION 2.8)
project(vectorcast)

if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
  if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "x86_64")
    set(LINUX64 1)
  else()
    set(LINUX32 1)
  endif()
endif()

if ((${CMAKE_SYSTEM_NAME} MATCHES "SunOS") or (DEFINED LINUX64))
  message(STATUS "On Solaris or 64 bit Linux")
endif()
# ====================================================[

I'm using cmake version 2.8.11.2 built from source on

Linux localhost.localdomain 2.6.18-8.el5 #1 SMP Thu Mar 15 19:46:53 EDT
2007 x86_64 x86_64 x86_64 GNU/Linux

This doesn't work.  I get this error message is:

CMake Error at CMakeLists.txt:12 (if):
  if given arguments:

    "(" "Linux" "MATCHES" "SunOS" ")" "or" "(" "DEFINED" "LINUX64" ")"

  Unknown arguments specified


What am I doing wrong?  Is this syntax not supported until the 3.x series?

Thanks,

Tom
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