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cmake_minimum_required(VERSION 2.8)
project(CheckCompilerRelatedVariables)
function(echo_var var)
if(DEFINED ${var})
message("${var}='${${var}}' is defined")
else()
message("${var}='${${var}}' is NOT defined")
endif()
endfunction()
#
# Check that the correct number of MSVC** variables are defined...
#
set(msvc_total 0)
if(DEFINED MSVC60)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC70)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC71)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC80)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC90)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC10)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
if(DEFINED MSVC11)
math(EXPR msvc_total "${msvc_total} + 1")
endif()
echo_var(MSVC)
echo_var(MSVC60)
echo_var(MSVC70)
echo_var(MSVC71)
echo_var(MSVC80)
echo_var(MSVC90)
echo_var(MSVC10)
echo_var(MSVC11)
if(MSVC)
#
# MSVC is set in cl.cmake when cl is the compiler...
#
# Exactly one of the numbered variables should also be set
# indicating which version of the cl compiler / Visual Studio
# is in use...
#
if(msvc_total EQUAL 1)
message("test passes: exactly one MSVC** variable is defined...")
else()
message(FATAL_ERROR "error: ${msvc_total} MSVC** variables are defined -- exactly 1 expected")
endif()
else()
#
# The compiler is something other than cl... None of the MSVC** variables
# should be defined...
#
if(msvc_total EQUAL 0)
message("test passes: no MSVC** variables are defined on non-MSVC build...")
else()
message(FATAL_ERROR "error: ${msvc_total} MSVC** variables are defined -- exactly 0 expected")
endif()
endif()
#
# This is a no-op executable... If this test is going to fail, it fails during
# the configure step while cmake is configuring this CMakeLists.txt file...
#
file(WRITE
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
"int main() { return 0; }
"
)
add_executable(
CheckCompilerRelatedVariables
"${CMAKE_CURRENT_BINARY_DIR}/main.cxx"
)
|
