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# -*- cmake -*-
#
# Compilation options shared by all Second Life components.
#*****************************************************************************
# It's important to realize that CMake implicitly concatenates
# CMAKE_CXX_FLAGS with (e.g.) CMAKE_CXX_FLAGS_RELEASE for Release builds. So
# set switches in CMAKE_CXX_FLAGS that should affect all builds, but in
# CMAKE_CXX_FLAGS_RELEASE or CMAKE_CXX_FLAGS_RELWITHDEBINFO for switches
# that should affect only that build variant.
#
# Also realize that CMAKE_CXX_FLAGS may already be partially populated on
# entry to this file.
#*****************************************************************************
include_guard()
include(Variables)
include(Linker)
# We go to some trouble to set LL_BUILD to the set of relevant compiler flags.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} $ENV{LL_BUILD}")
# Given that, all the flags you see added below are flags NOT present in
# https://bitbucket.org/lindenlab/viewer-build-variables/src/tip/variables.
# Before adding new ones here, it's important to ask: can this flag really be
# applied to the viewer only, or should/must it be applied to all 3p libraries
# as well?
# Portable compilation flags.
add_compile_definitions( ADDRESS_SIZE=${ADDRESS_SIZE})
# Because older versions of Boost.Bind dumped placeholders _1, _2 et al. into
# the global namespace, Boost now requires either BOOST_BIND_NO_PLACEHOLDERS
# to avoid that or BOOST_BIND_GLOBAL_PLACEHOLDERS to state that we require it
# -- which we do. Without one or the other, we get a ton of Boost warnings.
add_compile_definitions(BOOST_BIND_GLOBAL_PLACEHOLDERS)
# Configure crash reporting
set(RELEASE_CRASH_REPORTING OFF CACHE BOOL "Enable use of crash reporting in release builds")
set(NON_RELEASE_CRASH_REPORTING OFF CACHE BOOL "Enable use of crash reporting in developer builds")
if(RELEASE_CRASH_REPORTING)
add_compile_definitions( LL_SEND_CRASH_REPORTS=1)
endif()
if(NON_RELEASE_CRASH_REPORTING)
add_compile_definitions( LL_SEND_CRASH_REPORTS=1)
endif()
# Don't bother with a MinSizeRel or Debug builds.
set(CMAKE_CONFIGURATION_TYPES "RelWithDebInfo;Release" CACHE STRING "Supported build types." FORCE)
# Platform-specific compilation flags.
if (WINDOWS)
# Don't build DLLs.
set(BUILD_SHARED_LIBS OFF)
# for "backwards compatibility", cmake sneaks in the Zm1000 option which royally
# screws incredibuild. this hack disables it.
# for details see: http://connect.microsoft.com/VisualStudio/feedback/details/368107/clxx-fatal-error-c1027-inconsistent-values-for-ym-between-creation-and-use-of-precompiled-headers
# http://www.ogre3d.org/forums/viewtopic.php?f=2&t=60015
# http://www.cmake.org/pipermail/cmake/2009-September/032143.html
string(REPLACE "/Zm1000" " " CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
# zlib has assembly-language object files incompatible with SAFESEH
add_link_options(/LARGEADDRESSAWARE
/SAFESEH:NO
/NODEFAULTLIB:LIBCMT
/IGNORE:4099)
add_definitions(
-DNOMINMAX
# /DDOM_DYNAMIC # For shared library colladadom
)
add_compile_options(
/Zo
/GS
/TP
/W3
/c
/Zc:forScope
/nologo
/Oy-
/fp:fast
/MP
)
# Nicky: x64 implies SSE2
if( ADDRESS_SIZE EQUAL 32 )
add_compile_options( /arch:SSE2 )
endif()
# Are we using the crummy Visual Studio KDU build workaround?
if (NOT VS_DISABLE_FATAL_WARNINGS)
add_compile_options(/WX)
endif (NOT VS_DISABLE_FATAL_WARNINGS)
#ND: When using something like buildcache (https://github.com/mbitsnbites/buildcache)
# to make those wrappers work /Zi must be changed to /Z7, as /Zi due to it's nature is not compatible with caching
if( ${CMAKE_CXX_COMPILER_LAUNCHER} MATCHES ".*cache.*")
add_compile_options( /Z7 )
string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
string(REPLACE "/Zi" "/Z7" CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
string(REPLACE "/Zi" "/Z7" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
endif()
# workaround for github runner image breakage:
# https://github.com/actions/runner-images/issues/10004#issuecomment-2153445161
# can be removed after the above issue is resolved and deployed across GHA
add_compile_definitions(_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR)
# Allow use of sprintf etc
add_compile_definitions(_CRT_SECURE_NO_WARNINGS)
endif (WINDOWS)
if (LINUX OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
set( CMAKE_BUILD_WITH_INSTALL_RPATH TRUE )
set( CMAKE_INSTALL_RPATH $ORIGIN $ORIGIN/../lib )
set(CMAKE_EXE_LINKER_FLAGS "-Wl,--exclude-libs,ALL")
find_program(CCACHE_EXE ccache)
if(CCACHE_EXE AND NOT DISABLE_CCACHE)
set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_EXE} )
set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_EXE} )
endif()
# LL_IGNORE_SIGCHLD
# don't catch SIGCHLD in our base application class for the viewer - some of
# our 3rd party libs may need their *own* SIGCHLD handler to work. Sigh! The
# viewer doesn't need to catch SIGCHLD anyway.
add_compile_definitions(
_REENTRANT
APPID=megapahit
LL_IGNORE_SIGCHLD
)
if( ENABLE_ASAN )
add_compile_options(-U_FORTIFY_SOURCE
-fsanitize=address
--param asan-stack=0
)
add_link_options(-fsanitize=address)
else()
add_compile_definitions( _FORTIFY_SOURCE=2 )
endif()
if (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
add_compile_definitions(EXTERNAL_TOS)
endif (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
add_compile_options(
-fexceptions
-fno-math-errno
-fno-strict-aliasing
-fsigned-char
-msse2
-mfpmath=sse
-pthread
)
if (NOT BUILD_SHARED_LIBS)
add_compile_options(-fvisibility=hidden)
endif (NOT BUILD_SHARED_LIBS)
set(GCC_CLANG_COMPATIBLE_WARNINGS
-Wno-parentheses
-Wno-deprecated
-Wno-c++20-compat
-Wno-pessimizing-move
)
set(CLANG_WARNINGS
${GCC_CLANG_COMPATIBLE_WARNINGS}
# Put clang specific warning configuration here
)
set(GCC_WARNINGS
${GCC_CLANG_COMPATIBLE_WARNINGS}
-Wno-dangling-pointer
)
add_link_options(
-Wl,--no-keep-memory
-Wl,--build-id
-Wl,--no-undefined
)
if (NOT GCC_DISABLE_FATAL_WARNINGS)
add_compile_options( -Werror )
endif (NOT GCC_DISABLE_FATAL_WARNINGS)
# this stops us requiring a really recent glibc at runtime
add_compile_options(-fno-stack-protector)
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# ND: clang is a bit more picky than GCC, the latter seems to auto include -lstdc++ and -lm. The former not so and thus fails to link
add_link_options(
-lstdc++
-lm
)
add_compile_options(${CLANG_WARNINGS})
else()
add_compile_options(${GCC_WARNINGS})
endif()
endif (LINUX OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
if (DARWIN)
# Warnings should be fatal -- thanks, Nicky Perian, for spotting reversed default
set(CLANG_DISABLE_FATAL_WARNINGS OFF)
set(CMAKE_CXX_LINK_FLAGS "-Wl,-headerpad_max_install_names,-search_paths_first")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_CXX_LINK_FLAGS}")
set(DARWIN_extra_cstar_flags "-Wno-unused-local-typedef -Wno-deprecated-declarations")
# Ensure that CMAKE_CXX_FLAGS has the correct -g debug information format --
# see Variables.cmake.
string(REPLACE "-gdwarf-2" "-g${CMAKE_XCODE_ATTRIBUTE_DEBUG_INFORMATION_FORMAT}"
CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${DARWIN_extra_cstar_flags}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${DARWIN_extra_cstar_flags}")
# NOTE: it's critical that the optimization flag is put in front.
# NOTE: it's critical to have both CXX_FLAGS and C_FLAGS covered.
## Really?? On developer machines too?
##set(ENABLE_SIGNING TRUE)
##set(SIGNING_IDENTITY "Developer ID Application: Linden Research, Inc.")
# required for clang-15/xcode-15 since our boost package still uses deprecated std::unary_function/binary_function
# see https://developer.apple.com/documentation/xcode-release-notes/xcode-15-release-notes#C++-Standard-Library
add_compile_definitions(_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION)
set(GCC_WARNINGS -Wall -Wno-sign-compare -Wno-trigraphs)
list(APPEND GCC_WARNINGS -Wno-reorder -Wno-non-virtual-dtor )
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 13)
list(APPEND GCC_WARNINGS -Wno-unused-but-set-variable -Wno-unused-variable )
endif()
add_compile_options(${GCC_WARNINGS})
add_compile_options(-m${ADDRESS_SIZE})
endif ()
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