diff options
| author | Hennadii Stepanov <32963518+hebasto@users.noreply.github.com> | 2024-01-09 20:40:43 +0000 |
|---|---|---|
| committer | Hennadii Stepanov <32963518+hebasto@users.noreply.github.com> | 2024-08-16 19:27:37 +0100 |
| commit | f98327931bd0b5d90678ddd1770e9862266b396e (patch) | |
| tree | 4799a86d98655319b12f1821779eb77d0237c5e7 /cmake | |
| parent | 4a0af29697b62d32af6f60d3ec70cd2ed4d7243c (diff) | |
cmake: Add `TryAppendLinkerFlag` module
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/module/TryAppendLinkerFlag.cmake | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/cmake/module/TryAppendLinkerFlag.cmake b/cmake/module/TryAppendLinkerFlag.cmake new file mode 100644 index 0000000000..749120d445 --- /dev/null +++ b/cmake/module/TryAppendLinkerFlag.cmake @@ -0,0 +1,85 @@ +# 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/. + +include_guard(GLOBAL) +include(CheckCXXSourceCompiles) + +#[=[ +Usage example: + + try_append_linker_flag("-Wl,--major-subsystem-version,6" TARGET core_interface) + + +In configuration output, this function prints a string by the following pattern: + + -- Performing Test LINKER_SUPPORTS_[flag] + -- Performing Test LINKER_SUPPORTS_[flag] - Success + +]=] +function(try_append_linker_flag flag) + cmake_parse_arguments(PARSE_ARGV 1 + TALF # prefix + "" # options + "TARGET;VAR;SOURCE;RESULT_VAR" # one_value_keywords + "IF_CHECK_PASSED;IF_CHECK_FAILED" # multi_value_keywords + ) + + string(MAKE_C_IDENTIFIER "${flag}" result) + string(TOUPPER "${result}" result) + string(PREPEND result LINKER_SUPPORTS_) + + set(source "int main() { return 0; }") + if(DEFINED TALF_SOURCE AND NOT TALF_SOURCE STREQUAL source) + set(source "${TALF_SOURCE}") + string(SHA256 source_hash "${source}") + string(SUBSTRING ${source_hash} 0 4 source_hash_head) + string(APPEND result _${source_hash_head}) + endif() + + # This forces running a linker. + set(CMAKE_TRY_COMPILE_TARGET_TYPE EXECUTABLE) + set(CMAKE_REQUIRED_LINK_OPTIONS ${flag} ${working_linker_werror_flag}) + check_cxx_source_compiles("${source}" ${result}) + + if(${result}) + if(DEFINED TALF_IF_CHECK_PASSED) + if(DEFINED TALF_TARGET) + target_link_options(${TALF_TARGET} INTERFACE ${TALF_IF_CHECK_PASSED}) + endif() + if(DEFINED TALF_VAR) + string(STRIP "${${TALF_VAR}} ${TALF_IF_CHECK_PASSED}" ${TALF_VAR}) + endif() + else() + if(DEFINED TALF_TARGET) + target_link_options(${TALF_TARGET} INTERFACE ${flag}) + endif() + if(DEFINED TALF_VAR) + string(STRIP "${${TALF_VAR}} ${flag}" ${TALF_VAR}) + endif() + endif() + elseif(DEFINED TALF_IF_CHECK_FAILED) + if(DEFINED TALF_TARGET) + target_link_options(${TALF_TARGET} INTERFACE ${TACXXF_IF_CHECK_FAILED}) + endif() + if(DEFINED TALF_VAR) + string(STRIP "${${TALF_VAR}} ${TACXXF_IF_CHECK_FAILED}" ${TALF_VAR}) + endif() + endif() + + if(DEFINED TALF_VAR) + set(${TALF_VAR} "${${TALF_VAR}}" PARENT_SCOPE) + endif() + + if(DEFINED TALF_RESULT_VAR) + set(${TALF_RESULT_VAR} "${${result}}" PARENT_SCOPE) + endif() +endfunction() + +if(MSVC) + try_append_linker_flag("/WX" VAR working_linker_werror_flag) +elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin") + try_append_linker_flag("-Wl,-fatal_warnings" VAR working_linker_werror_flag) +else() + try_append_linker_flag("-Wl,--fatal-warnings" VAR working_linker_werror_flag) +endif() |