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cmake_minimum_required(VERSION 2.8)
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project(CheckCompilerRelatedVariables)
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function(echo_var var)
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if(DEFINED ${var})
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message("${var}='${${var}}' is defined")
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else()
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message("${var}='${${var}}' is NOT defined")
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endif()
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endfunction()
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#
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# Check that the correct number of MSVC** variables are defined...
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#
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set(msvc_total 0)
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if(DEFINED MSVC60)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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if(DEFINED MSVC70)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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if(DEFINED MSVC71)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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if(DEFINED MSVC80)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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if(DEFINED MSVC90)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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if(DEFINED MSVC10)
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math(EXPR msvc_total "${msvc_total} + 1")
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endif()
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echo_var(MSVC)
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echo_var(MSVC60)
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echo_var(MSVC70)
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echo_var(MSVC71)
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echo_var(MSVC80)
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echo_var(MSVC90)
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echo_var(MSVC10)
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if(MSVC)
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#
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# MSVC is set in cl.cmake when cl is the compiler...
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#
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# Exactly one of the numbered variables should also be set
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# indicating which version of the cl compiler / Visual Studio
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# is in use...
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#
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if(msvc_total EQUAL 1)
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message("test passes: exactly one MSVC** variable is defined...")
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else()
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message(FATAL_ERROR "error: ${msvc_total} MSVC** variables are defined -- exactly 1 expected")
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endif()
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else()
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#
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# The compiler is something other than cl... None of the MSVC** variables
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# should be defined...
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#
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if(msvc_total EQUAL 0)
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message("test passes: no MSVC** variables are defined on non-MSVC build...")
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else()
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message(FATAL_ERROR "error: ${msvc_total} MSVC** variables are defined -- exactly 0 expected")
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|
endif()
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endif()
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#
|
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# This is a no-op executable... If this test is going to fail, it fails during
|
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|
|
# the configure step while cmake is configuring this CMakeLists.txt file...
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#
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file(WRITE
|
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|
|
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
|
|
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|
|
"int main() { return 0; }
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"
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)
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|
|
add_executable(
|
|
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|
|
CheckCompilerRelatedVariables
|
|
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|
|
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
|
|
|
|
|
)
|
