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cmake switch for dynamic or static CRT in Visual Studio #25

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6 changes: 6 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,12 @@ project (CMT)
cmake_minimum_required (VERSION 2.6)

option(BUILD_TRAX_CLIENT "Build the trax client." OFF)
set(BUILD_WITH_STATIC_CRT "Manual flags" CACHE STRING "Use statically linked CRT")
set_property(CACHE BUILD_WITH_STATIC_CRT PROPERTY STRINGS "Manual flags" "Yes" "No")

if(MSVC)
include(cmake/msvc_crt.cmake)
endif(MSVC)

find_package(OpenCV REQUIRED)

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37 changes: 37 additions & 0 deletions cmake/msvc_crt.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,37 @@
if(NOT MSVC)
message(FATAL_ERROR "CRT options are available only for MSVC")
endif()

if(${BUILD_WITH_STATIC_CRT} MATCHES "Yes")
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif()
if(${flag_var} MATCHES "/MDd")
string(REGEX REPLACE "/MDd" "/MTd" ${flag_var} "${${flag_var}}")
endif()
set(${flag_var} "${${flag_var}}" CACHE STRING "" FORCE)
endforeach(flag_var)

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:msvcrt.lib /NODEFAULTLIB:msvcrtd.lib")
set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} /NODEFAULTLIB:libcmt.lib")
set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /NODEFAULTLIB:libcmtd.lib")
elseif(${BUILD_WITH_STATIC_CRT} MATCHES "No")
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MT")
string(REGEX REPLACE "/MT" "/MD" ${flag_var} "${${flag_var}}")
endif()
if(${flag_var} MATCHES "/MTd")
string(REGEX REPLACE "/MTd" "/MDd" ${flag_var} "${${flag_var}}")
endif()
set(${flag_var} "${${flag_var}}" CACHE STRING "" FORCE)
endforeach(flag_var)
endif()