diff options
Diffstat (limited to 'cmake/QtTargetHelpers.cmake')
| -rw-r--r-- | cmake/QtTargetHelpers.cmake | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/cmake/QtTargetHelpers.cmake b/cmake/QtTargetHelpers.cmake index da210820bb2..10d60807212 100644 --- a/cmake/QtTargetHelpers.cmake +++ b/cmake/QtTargetHelpers.cmake @@ -2023,3 +2023,61 @@ function(qt_internal_apply_dynamic_list_linker_flags target dynlist_template) target_link_options(${target} PRIVATE "LINKER:--dynamic-list=${dynlist_file_abspath}") endfunction() + +function(qt_internal_workaround_static_lib_gcc_lto_issue target) + get_target_property(target_type "${target}" TYPE) + get_target_property(target_lto_enabled "${target}" INTERPROCEDURAL_OPTIMIZATION) + get_target_property(target_lto_enabled_debug "${target}" INTERPROCEDURAL_OPTIMIZATION_DEBUG) + set(target_lto_enabled_debug_unset FALSE) + + if(target_lto_enabled_debug MATCHES "-NOTFOUND") + set(target_lto_enabled_debug_unset TRUE) + endif() + + set(general_lto_enabled FALSE) + + if(FEATURE_ltcg + OR QT_FEATURE_ltcg + OR CMAKE_INTERPROCEDURAL_OPTIMIZATION + OR target_lto_enabled) + set(general_lto_enabled TRUE) + endif() + + if((general_lto_enabled OR target_lto_enabled_debug) + AND GCC + AND target_type STREQUAL "STATIC_LIBRARY") + # CMake <= 3.19 appends -fno-fat-lto-objects for all library types if + # CMAKE_INTERPROCEDURAL_OPTIMIZATION is enabled. Static libraries need + # the opposite compiler option. + # (https://gitlab.kitware.com/cmake/cmake/-/issues/21696) + set(flag_name -ffat-lto-objects) + + if((general_lto_enabled AND target_lto_enabled_debug_unset) + OR (general_lto_enabled AND target_lto_enabled) + ) + set(flag_wrapped "${flag_name}") + elseif(general_lto_enabled AND NOT target_lto_enabled_debug) + set(flag_wrapped "$<$<NOT:$<CONFIG:Debug>>:${flag_name}>") + elseif(target_lto_enabled_debug) + set(flag_wrapped "$<$<CONFIG:Debug>:${flag_name}>") + endif() + + target_compile_options("${target}" PRIVATE "${flag_wrapped}") + endif() +endfunction() + +# Enable LTO for the debug configuration of optimized tool or library targets. +# Can be opted out via various options. +function(qt_internal_enable_optimized_tools_lto target) + string(TOLOWER "${PROJECT_NAME}" project_name_lower) + + if(QT_FEATURE_optimized_tools + AND NOT QT_FORCE_NO_OPTIMIZED_TOOLS_LTO + AND NOT QT_FORCE_NO_OPTIMIZE_${target} + AND NOT QT_FORCE_NO_OPTIMIZE_${project_name_lower} + AND NOT QT_FORCE_NO_LTO_${target} + AND NOT QT_FORCE_NO_LTO_${project_name_lower} + ) + set_target_properties("${target}" PROPERTIES INTERPROCEDURAL_OPTIMIZATION_DEBUG ON) + endif() +endfunction() |