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Fixed build errors resulting from upgrading to VS2019 compilers #3894

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Merged
merged 3 commits into from
Jun 21, 2019
Merged

Fixed build errors resulting from upgrading to VS2019 compilers #3894

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8749a10
Merge pull request #1 from dotnet/master
harishsk Jun 20, 2019
fe25bf6
Fixed build errors resulting from upgrade to VS2019 compilers
harishsk Jun 21, 2019
cb446be
Added additional message describing the previous fix
harishsk Jun 21, 2019
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13 changes: 12 additions & 1 deletion src/Native/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,17 @@ set(RESOURCES)
include_directories("${CMAKE_BINARY_DIR}/../../")

if(WIN32)
# Clobber and reset the default C and CXX flags because
# CMake uses /ZI (Edit and Continue) for generating pdbs
# which is incompatible with the /guard:cf flag we set below
# for security. So we use the default flags set by CMake
# and reset /ZI with /Zi
message("CMAKE_C_FLAGS_DEBUG is ${CMAKE_C_FLAGS_DEBUG}")
message("CMAKE_CXX_FLAGS_DEBUG is ${CMAKE_CXX_FLAGS_DEBUG}")
message("In a future version, If the default compiler flags no longer contain the /ZI flag, delete this message block and the two lines below.")
set(CMAKE_C_FLAGS_DEBUG "/MDd /Zi /Ob0 /Od /RTC1 /JMC")
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Where do those flags /MDd /Zi /Ob0 /Od /RTC1 /JMC come from? Are they default flags in CMake? Could you please add more details for maintaining them in the future?

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Yes, those are the default flags in CMake. I will add a bit more detail and submit another PR soon.

set(CMAKE_CXX_FLAGS_DEBUG "/MDd /Zi /Ob0 /Od /RTC1 /JMC")

add_definitions(-DWIN32)
add_definitions(-D_WIN32=1)
add_definitions(-DUNICODE -D_UNICODE)
Expand All @@ -22,7 +33,7 @@ if(WIN32)
add_compile_options($<$<CONFIG:Release>:/MT>)
add_compile_options($<$<CONFIG:RelWithDebInfo>:/MT>)
add_compile_options(/guard:cf)
add_compile_options(/d2Zi+) # make optimized builds debugging easier
add_compile_options(/Zo) # make optimized builds debugging easier. /Zo is the newer documented flag.
add_compile_options(/nologo) # Suppress Startup Banner
add_compile_options(/W3) # set warning level to 3
add_compile_options(/WX) # treat warnings as errors
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