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CMake: Build flags for MSVC

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Signed-off-by: TheLastRar <TheLastRar@users.noreply.github.com>
This commit is contained in:
TheLastRar 2022-10-26 01:44:30 +01:00
parent e777c26a14
commit 12632ec404
1 changed files with 30 additions and 4 deletions
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34
CMakeLists.txt
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@ -27,11 +27,37 @@ set(CMAKE_C_STANDARD_REQUIRED true)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_C_STANDARD 11)
include(GenerateExportHeader)
set(CMAKE_CXX_FLAGS "-Wall -pedantic -fstack-protector-strong --param=ssp-buffer-size=4 ${CMAKE_CXX_FLAGS}")
if(MSVC)
# Use /W4 as /Wall includes unnesserey warnings such as added padding to structs
# /permissive- specify standards-conforming compiler behavior, also enabled by Qt6, default on with std:c++20
# /GS Adds buffer security checks, default on but incuded anyway to mirror gcc's fstack-protector flag
set(CMAKE_CXX_FLAGS "/W4 /permissive- /GS ${CMAKE_CXX_FLAGS}")
# ATL's packlist needs more than the default 1 Mib stack on windows
if(WIN32)
set(CMAKE_EXE_LINKER_FLAGS "-Wl,--stack,8388608 ${CMAKE_EXE_LINKER_FLAGS}")
# LINK accepts /SUBSYSTEM whics sets if we are a WINDOWS (gui) or a CONSOLE programs
# This implicitly selects an entrypoint specific to the subsystem selected
# qtmain/QtEntryPointLib provides the correct entrypoint (wWinMain) for gui programs
# Additinaly LINK autodetects we use a GUI so we can omit /SUBSYSTEM
# This allows tests to still use have console without using seperate linker flags
# /MANIFEST:NO disables generating a manifest file, we instead provide our own
# /STACK sets the stack reserve size, ATL's pack list needs 3-4 MiB as of November 2022, provide 8 MiB
set(CMAKE_EXE_LINKER_FLAGS "/MANIFEST:NO /STACK:8388608 ${CMAKE_EXE_LINKER_FLAGS}")
# See https://github.com/ccache/ccache/issues/1040
# Note, CMake 3.25 replaces this with CMAKE_MSVC_DEBUG_INFORMATION_FORMAT
# See https://cmake.org/cmake/help/v3.25/variable/CMAKE_MSVC_DEBUG_INFORMATION_FORMAT.html
foreach(config DEBUG RELWITHDEBINFO)
foreach(lang C CXX)
set(flags_var "CMAKE_${lang}_FLAGS_${config}")
string(REGEX REPLACE "/Z[Ii]" "/Z7" ${flags_var} "${${flags_var}}")
endforeach()
endforeach()
else()
set(CMAKE_CXX_FLAGS "-Wall -pedantic -fstack-protector-strong --param=ssp-buffer-size=4 ${CMAKE_CXX_FLAGS}")
# ATL's pack list needs more than the default 1 Mib stack on windows
if(WIN32)
set(CMAKE_EXE_LINKER_FLAGS "-Wl,--stack,8388608 ${CMAKE_EXE_LINKER_FLAGS}")
endif()
endif()
# Fix build with Qt 5.13