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cmake_minimum_required(VERSION 3.23)
cmake_policy(SET CMP0136 NEW)
project(WatcomRuntimeLibrary)
function(verify_combinations threads lang src)
set(verify_def_MultiThreaded -DVERIFY_MT)
set(verify_def_DLL -DVERIFY_DLL)
foreach(dll "" DLL)
# Construct the name of this runtime library combination.
set(rtl "${threads}${dll}")
# Test that try_compile builds with this RTL.
set(CMAKE_WATCOM_RUNTIME_LIBRARY "${rtl}")
set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY")
try_compile(${rtl}_COMPILES
${CMAKE_CURRENT_BINARY_DIR}/try_compile/${rtl}
${CMAKE_CURRENT_SOURCE_DIR}/${src}
COMPILE_DEFINITIONS ${verify_def_${threads}} ${verify_def_${dll}}
OUTPUT_VARIABLE ${rtl}_OUTPUT
)
if(${rtl}_COMPILES)
message(STATUS "try_compile with ${rtl} worked")
else()
string(REPLACE "\n" "\n " ${rtl}_OUTPUT " ${${rtl}_OUTPUT}")
message(SEND_ERROR "try_compile with ${rtl} failed:\n${${rtl}_OUTPUT}")
endif()
# Test that targets build with this RTL.
set(CMAKE_WATCOM_RUNTIME_LIBRARY "$<$<BOOL:$<TARGET_PROPERTY:BOOL_TRUE>>:${rtl}>$<$<BOOL:$<TARGET_PROPERTY:BOOL_FALSE>>:BadContent>")
add_library(${rtl}-${lang} ${src})
set_property(TARGET ${rtl}-${lang} PROPERTY BOOL_TRUE TRUE)
target_compile_definitions(${rtl}-${lang} PRIVATE ${verify_def_${threads}} ${verify_def_${dll}})
endforeach()
endfunction()
function(verify lang src)
add_library(default-${lang} ${src})
target_compile_definitions(default-${lang} PRIVATE VERIFY_MT VERIFY_DLL)
verify_combinations(SingleThreaded ${lang} ${src})
verify_combinations(MultiThreaded ${lang} ${src})
# Test known default behavior when no flag is given.
set(CMAKE_WATCOM_RUNTIME_LIBRARY "")
add_library(empty-${lang} ${src})
endfunction()
verify(C verify.c)
verify(CXX verify.cxx)
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