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z3/cmake/compiler_flags_override.cmake

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CMake

# This file overrides the default compiler flags for CMake's built-in
# configurations (CMAKE_BUILD_TYPE). Most compiler flags should not be set here.
# The main purpose is to make sure ``-DNDEBUG`` is never set by default.
if (CMAKE_C_COMPILER_ID)
set(_lang C)
elseif(CMAKE_CXX_COMPILER_ID)
set(_lang CXX)
else()
message(FATAL_ERROR "Unknown language")
endif()
if (("${CMAKE_${_lang}_COMPILER_ID}" MATCHES "Clang") OR ("${CMAKE_${_lang}_COMPILER_ID}" MATCHES "GNU"))
# Taken from Modules/Compiler/GNU.cmake but -DNDEBUG is removed
set(CMAKE_${_lang}_FLAGS_INIT "")
# FIXME: should we have -D_DEBUG here to match MSVC build?
set(CMAKE_${_lang}_FLAGS_DEBUG_INIT "-g -O0")
set(CMAKE_${_lang}_FLAGS_MINSIZEREL_INIT "-Os")
set(CMAKE_${_lang}_FLAGS_RELEASE_INIT "-O3")
set(CMAKE_${_lang}_FLAGS_RELWITHDEBINFO_INIT "-O2 -g")
# FIXME: Remove "x.." when CMP0054 is set to NEW
elseif ("x${CMAKE_${_lang}_COMPILER_ID}" STREQUAL "xMSVC")
set(CMAKE_${_lang}_FLAGS_DEBUG_INIT "/D_DEBUG /MTd /Zi /Ob0 /Od /RTC1")
set(CMAKE_${_lang}_FLAGS_MINSIZEREL_INIT "/MT /O1 /Ob1")
set(CMAKE_${_lang}_FLAGS_RELEASE_INIT "/MT /O2 /Ob2")
set(CMAKE_${_lang}_FLAGS_RELWITHDEBINFO_INIT "/MT /Zi /O2 /Ob1")
else()
message(FATAL_ERROR "Overrides not set for ${_lang} compiler \"${CMAKE_${_lang}_COMPILER_ID}\"")
endif()
unset(_lang)