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# Set a default build type if none was specified
# Based on https://blog.kitware.com/cmake-and-the-default-build-type/
if(NOT default_build_type)
set(default_build_type "Release")
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
set(default_build_type "RelWithDebInfo")
endif()
endif()
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${default_build_type}' as none was specified.")
set(CMAKE_BUILD_TYPE "${default_build_type}" CACHE
STRING "Choose the type of build." FORCE)
# Set the possible values of build type for cmake-gui
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
"Debug" "Release" "MinSizeRel" "RelWithDebInfo" "DEB")
endif()
if(CMAKE_BUILD_TYPE STREQUAL "DEB")
message("-- Setting up flags for Debian based distro packaging")
function(dpkg_buildflags var flags)
execute_process(COMMAND dpkg-buildflags --get ${flags}
OUTPUT_VARIABLE ${var}
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(var ${var} PARENT_SCOPE)
endfunction()
dpkg_buildflags(CMAKE_C_FLAGS_DEB CFLAGS)
dpkg_buildflags(CMAKE_CXX_FLAGS_DEB CPPFLAGS)
dpkg_buildflags(CMAKE_SHARED_LINKER_FLAGS_DEP LDFLAGS)
dpkg_buildflags(CMAKE_EXE_LINKER_FLAGS_DEP LDFLAGS)
endif()
# Using gdwarf-2 -g3 allows using macros in gdb, which helps a lot
# when debugging the Prolog internals.
if(CMAKE_COMPILER_IS_GNUCC)
set(CMAKE_C_FLAGS_DEBUG "-DO_DEBUG -DO_DEBUG_ATOMGC -gdwarf-2 -g3"
CACHE STRING "CFLAGS for a Debug build" FORCE)
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -gdwarf-2 -g3"
CACHE STRING "CFLAGS for a RelWithDebInfo build" FORCE)
set(CMAKE_C_FLAGS_RELEASE "-O2"
CACHE STRING "CFLAGS for a Release build" FORCE)
set(CMAKE_C_FLAGS_SANITIZE
"-O0 -gdwarf-2 -g3 -fsanitize=address -fno-omit-frame-pointer"
CACHE STRING "CFLAGS for a Sanitize build" FORCE)
elseif(CMAKE_C_COMPILER_ID STREQUAL AppleClang)
set(CMAKE_C_FLAGS_DEBUG "-DO_DEBUG -gdwarf-2 -g3"
CACHE STRING "CFLAGS for a Debug build" FORCE)
else()
message("Unknown C compiler. ${CMAKE_C_COMPILER_ID}")
endif()
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