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[FIXUP] cmake: Rework compile/link flags summary
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@hebasto
hebasto committed Jun 4, 2024
1 parent 2594742 commit 50f9f3b
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Showing 4 changed files with 122 additions and 52 deletions.
32 changes: 9 additions & 23 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -198,11 +198,11 @@ add_library(core_interface INTERFACE)
# include the warn_interface as subtree's warnings are not fixable
# in our tree.
add_library(core_base_interface INTERFACE)
add_library(core_depends_release_interface INTERFACE)
add_library(core_depends_debug_interface INTERFACE)
add_library(core_interface_relwithdebinfo INTERFACE)
add_library(core_interface_debug INTERFACE)
target_link_libraries(core_base_interface INTERFACE
$<$<CONFIG:RelWithDebInfo>:core_depends_release_interface>
$<$<CONFIG:Debug>:core_depends_debug_interface>
$<$<CONFIG:RelWithDebInfo>:core_interface_relwithdebinfo>
$<$<CONFIG:Debug>:core_interface_debug>
)
target_link_libraries(core_interface INTERFACE core_base_interface)

Expand Down Expand Up @@ -419,7 +419,7 @@ include(ProcessConfigurations)
set_default_config(RelWithDebInfo)

# Redefine/adjust per-configuration flags.
target_compile_definitions(core_depends_debug_interface INTERFACE
target_compile_definitions(core_interface_debug INTERFACE
DEBUG
DEBUG_LOCKORDER
DEBUG_LOCKCONTENTION
Expand Down Expand Up @@ -564,8 +564,8 @@ else()
endif()

target_compile_definitions(core_base_interface INTERFACE ${DEPENDS_COMPILE_DEFINITIONS})
target_compile_definitions(core_depends_release_interface INTERFACE ${DEPENDS_COMPILE_DEFINITIONS_RELWITHDEBINFO})
target_compile_definitions(core_depends_debug_interface INTERFACE ${DEPENDS_COMPILE_DEFINITIONS_DEBUG})
target_compile_definitions(core_interface_relwithdebinfo INTERFACE ${DEPENDS_COMPILE_DEFINITIONS_RELWITHDEBINFO})
target_compile_definitions(core_interface_debug INTERFACE ${DEPENDS_COMPILE_DEFINITIONS_DEBUG})

# If {C,CXX,LD}FLAGS variables are defined during building depends and
# configuring this build system, their content might be duplicated.
Expand All @@ -591,12 +591,6 @@ add_maintenance_targets()
add_windows_deploy_target()
add_macos_deploy_target()


include(GetTargetInterface)
get_target_interface(definitions core_interface COMPILE_DEFINITIONS)
get_target_interface(definitions_RELWITHDEBINFO core_depends_release_interface COMPILE_DEFINITIONS)
get_target_interface(definitions_DEBUG core_depends_debug_interface COMPILE_DEFINITIONS)

message("\n")
message("Configure summary")
message("=================")
Expand Down Expand Up @@ -642,18 +636,10 @@ else()
set(cross_status "FALSE")
endif()
message("Cross compiling ....................... ${cross_status}")
message("Preprocessor defined macros ........... ${definitions}")
message("C compiler ............................ ${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION}, ${CMAKE_C_COMPILER}")
message("CFLAGS ................................ ${CMAKE_C_FLAGS} ${APPEND_CPPFLAGS} ${APPEND_CFLAGS}")
message("C++ compiler .......................... ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}, ${CMAKE_CXX_COMPILER}")
message("CXXFLAGS .............................. ${CMAKE_CXX_FLAGS} ${APPEND_CPPFLAGS} ${APPEND_CXXFLAGS}")
get_target_interface(common_compile_options core_interface COMPILE_OPTIONS)
message("Common compile options ................ ${common_compile_options}")
get_target_interface(common_link_options core_interface LINK_OPTIONS)
message("Common link options ................... ${common_link_options}")
message("Linker flags for executables .......... ${CMAKE_EXE_LINKER_FLAGS} ${APPEND_LDFLAGS}")
message("Linker flags for shared libraries ..... ${CMAKE_SHARED_LINKER_FLAGS} ${APPEND_LDFLAGS}")
print_config_flags()
include(FlagsSummary)
flags_summary()
message("Attempt to harden executables ......... ${ENABLE_HARDENING}")
message("Treat compiler warnings as errors ..... ${WERROR}")
message("Use ccache for compiling .............. ${WITH_CCACHE}")
Expand Down
84 changes: 84 additions & 0 deletions cmake/module/FlagsSummary.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,84 @@
# Copyright (c) 2024-present The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or https://opensource.org/license/mit/.

include_guard(GLOBAL)

function(indent_message header content indent_num)
if(indent_num GREATER 0)
string(REPEAT " " ${indent_num} indentation)
string(REPEAT "\\." ${indent_num} dots)
string(REGEX REPLACE "${dots}$" "" header "${header}")
endif()
message("${indentation}${header} ${content}")
endfunction()

function(print_flags_per_config config indent_num)
string(TOUPPER "${config}" config_uppercase)

include(GetTargetInterface)
get_target_interface(definitions ${config} core_interface COMPILE_DEFINITIONS)
indent_message("Preprocessor defined macros ..........." "${definitions}" ${indent_num})

string(STRIP "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${config_uppercase}}" combined_c_flags)
if(CMAKE_INTERPROCEDURAL_OPTIMIZATION)
string(JOIN " " combined_c_flags ${combined_c_flags} ${CMAKE_C_COMPILE_OPTIONS_IPO})
endif()
if(CMAKE_POSITION_INDEPENDENT_CODE)
string(JOIN " " combined_c_flags ${combined_c_flags} ${CMAKE_C_COMPILE_OPTIONS_PIC})
endif()
get_target_interface(core_c_flags ${config} core_base_interface COMPILE_OPTIONS)
string(STRIP "${combined_c_flags} ${core_c_flags}" combined_c_flags)
string(STRIP "${combined_c_flags} ${APPEND_CPPFLAGS}" combined_c_flags)
string(STRIP "${combined_c_flags} ${APPEND_CFLAGS}" combined_c_flags)
indent_message("C flags ..............................." "${combined_c_flags}" ${indent_num})

string(STRIP "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${config_uppercase}}" combined_cxx_flags)
if(CMAKE_INTERPROCEDURAL_OPTIMIZATION)
string(JOIN " " combined_cxx_flags ${combined_cxx_flags} ${CMAKE_CXX_COMPILE_OPTIONS_IPO})
endif()
if(CMAKE_POSITION_INDEPENDENT_CODE)
string(JOIN " " combined_cxx_flags ${combined_cxx_flags} ${CMAKE_CXX_COMPILE_OPTIONS_PIC})
endif()
get_target_interface(core_cxx_flags ${config} core_interface COMPILE_OPTIONS)
string(STRIP "${combined_cxx_flags} ${core_cxx_flags}" combined_cxx_flags)
string(STRIP "${combined_cxx_flags} ${APPEND_CPPFLAGS}" combined_cxx_flags)
string(STRIP "${combined_cxx_flags} ${APPEND_CXXFLAGS}" combined_cxx_flags)
indent_message("C++ flags ............................." "${combined_cxx_flags}" ${indent_num})

string(STRIP "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${config_uppercase}}" combined_linker_flags)
if(CMAKE_INTERPROCEDURAL_OPTIMIZATION)
string(JOIN " " combined_linker_flags ${combined_linker_flags} ${CMAKE_CXX_COMPILE_OPTIONS_IPO})
endif()
string(STRIP "${combined_linker_flags} ${CMAKE_EXE_LINKER_FLAGS}" combined_linker_flags)
get_target_interface(common_link_options ${config} core_interface LINK_OPTIONS)
string(STRIP "${combined_linker_flags} ${common_link_options}" combined_linker_flags)
if(CMAKE_CXX_LINK_PIE_SUPPORTED)
string(JOIN " " combined_linker_flags ${combined_linker_flags} ${CMAKE_CXX_LINK_OPTIONS_PIE})
endif()
string(STRIP "${combined_linker_flags} ${APPEND_LDFLAGS}" combined_linker_flags)
indent_message("Linker flags .........................." "${combined_linker_flags}" ${indent_num})
endfunction()

function(flags_summary)
get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(is_multi_config)
list(JOIN CMAKE_CONFIGURATION_TYPES ", " configs)
message("Available build configurations ........ ${configs}")
if(CMAKE_GENERATOR MATCHES "Visual Studio")
set(default_config "Debug")
else()
list(GET CMAKE_CONFIGURATION_TYPES 0 default_config)
endif()
message("Default build configuration ........... ${default_config}")
foreach(config IN LISTS CMAKE_CONFIGURATION_TYPES)
message("")
message("'${config}' build configuration:")
print_flags_per_config(${config} 2)
endforeach()
message("")
else()
message("CMAKE_BUILD_TYPE ...................... ${CMAKE_BUILD_TYPE}")
print_flags_per_config(${CMAKE_BUILD_TYPE} 0)
endif()
endfunction()
33 changes: 29 additions & 4 deletions cmake/module/GetTargetInterface.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -4,21 +4,46 @@

include_guard(GLOBAL)

# Get target's interface properties recursively.
function(get_target_interface var target property)
# Evaluates config-specific generator expressions in a list.
# Recognizable patterns are:
# - $<$<CONFIG:[config]>:[value]>
# - $<$<NOT:$<CONFIG:[config]>>:[value]>
function(evaluate_generator_expressions list config)
set(input ${${list}})
set(result)
foreach(token IN LISTS input)
if(token MATCHES "\\$<\\$<CONFIG:([^>]+)>:([^>]+)>")
if(CMAKE_MATCH_1 STREQUAL config)
list(APPEND result ${CMAKE_MATCH_2})
endif()
elseif(token MATCHES "\\$<\\$<NOT:\\$<CONFIG:([^>]+)>>:([^>]+)>")
if(NOT CMAKE_MATCH_1 STREQUAL config)
list(APPEND result ${CMAKE_MATCH_2})
endif()
else()
list(APPEND result ${token})
endif()
endforeach()
set(${list} ${result} PARENT_SCOPE)
endfunction()


# Gets target's interface properties recursively.
function(get_target_interface var config target property)
get_target_property(result ${target} INTERFACE_${property})
if(result)
string(GENEX_STRIP "${result}" result)
evaluate_generator_expressions(result "${config}")
list(JOIN result " " result)
else()
set(result)
endif()

get_target_property(dependencies ${target} INTERFACE_LINK_LIBRARIES)
if(dependencies)
evaluate_generator_expressions(dependencies "${config}")
foreach(dependency IN LISTS dependencies)
if(TARGET ${dependency})
get_target_interface(dep_result ${dependency} ${property})
get_target_interface(dep_result "${config}" ${dependency} ${property})
string(STRIP "${result} ${dep_result}" result)
endif()
endforeach()
Expand Down
25 changes: 0 additions & 25 deletions cmake/module/ProcessConfigurations.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -139,28 +139,3 @@ function(replace_cxx_flag_in_config config old_flag new_flag)
FORCE
)
endfunction()

function(print_config_flags)
macro(print_flags config)
string(TOUPPER "${config}" config_uppercase)
message(" - Preprocessor defined macros ........ ${definitions_${config_uppercase}}")
message(" - CFLAGS ............................. ${CMAKE_C_FLAGS_${config_uppercase}}")
message(" - CXXFLAGS ........................... ${CMAKE_CXX_FLAGS_${config_uppercase}}")
message(" - LDFLAGS for executables ............ ${CMAKE_EXE_LINKER_FLAGS_${config_uppercase}}")
message(" - LDFLAGS for shared libraries ....... ${CMAKE_SHARED_LINKER_FLAGS_${config_uppercase}}")
endmacro()

get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(is_multi_config)
list(JOIN CMAKE_CONFIGURATION_TYPES " " configs)
message("Available build types (configurations) ${configs}")
foreach(config IN LISTS CMAKE_CONFIGURATION_TYPES)
message("'${config}' build type (configuration):")
print_flags(${config})
endforeach()
else()
message("Build type (configuration):")
message(" - CMAKE_BUILD_TYPE ................... ${CMAKE_BUILD_TYPE}")
print_flags(${CMAKE_BUILD_TYPE})
endif()
endfunction()

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