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cmake: Add ccache support

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This commit is contained in:
Hennadii Stepanov 2024-06-30 11:02:05 +01:00
parent cedfdf6c72
commit dbb7ed14e8
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2 changed files with 45 additions and 0 deletions
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9
CMakeLists.txt
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@ -61,6 +61,12 @@ set(CMAKE_CXX_EXTENSIONS OFF)
list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/module)
#=============================
# Configurable options
#=============================
# When adding a new option, end the <help_text> with a full stop for consistency.
option(WITH_CCACHE "Attempt to use ccache for compiling." ON)
set(configure_warnings)
include(CheckPIESupported)
@ -184,6 +190,8 @@ target_link_libraries(core_interface INTERFACE
include(cmake/introspection.cmake)
include(cmake/ccache.cmake)
# Don't allow extended (non-ASCII) symbols in identifiers. This is easier for code review.
try_append_cxx_flags("-fno-extended-identifiers" TARGET core_interface SKIP_LINK)
@ -209,6 +217,7 @@ message("=================")
message("C++ compiler .......................... ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}, ${CMAKE_CXX_COMPILER}")
include(FlagsSummary)
flags_summary()
message("Use ccache for compiling .............. ${WITH_CCACHE}")
message("\n")
if(configure_warnings)
message(" ******\n")

36
cmake/ccache.cmake Normal file
View File

@ -0,0 +1,36 @@
# Copyright (c) 2023-present The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or https://opensource.org/license/mit/.
if(NOT MSVC)
find_program(CCACHE_EXECUTABLE ccache)
if(CCACHE_EXECUTABLE)
execute_process(
COMMAND readlink -f ${CMAKE_CXX_COMPILER}
OUTPUT_VARIABLE compiler_resolved_link
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(CCACHE_EXECUTABLE STREQUAL compiler_resolved_link AND NOT WITH_CCACHE)
list(APPEND configure_warnings
"Disabling ccache was attempted using -DWITH_CCACHE=${WITH_CCACHE}, but ccache masquerades as the compiler."
)
set(WITH_CCACHE ON)
elseif(WITH_CCACHE)
list(APPEND CMAKE_C_COMPILER_LAUNCHER ${CCACHE_EXECUTABLE})
list(APPEND CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_EXECUTABLE})
endif()
else()
set(WITH_CCACHE OFF)
endif()
if(WITH_CCACHE)
try_append_cxx_flags("-fdebug-prefix-map=A=B" TARGET core_interface SKIP_LINK
IF_CHECK_PASSED "-fdebug-prefix-map=${PROJECT_SOURCE_DIR}=."
)
try_append_cxx_flags("-fmacro-prefix-map=A=B" TARGET core_interface SKIP_LINK
IF_CHECK_PASSED "-fmacro-prefix-map=${PROJECT_SOURCE_DIR}=."
)
endif()
endif()
mark_as_advanced(CCACHE_EXECUTABLE)