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Code Issues Projects Releases Wiki Activity

fix AppleClang linker flags

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olszomal 2022-07-29 15:38:35 +02:00 committed by Michał Trojnara
parent d7daf98db8
commit 7871e28141
1 changed files with 18 additions and 42 deletions
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60
cmake/SetCompilerFlags.cmake
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@ -1,39 +1,5 @@
include(CheckCCompilerFlag) include(CheckCCompilerFlag)
function(add_linker_flag_if_supported flagname targets)
check_c_compiler_flag("${flagname}" HAVE_FLAG_${flagname})
if (HAVE_FLAG_${flagname})
foreach(target ${targets})
target_link_options(${target} PRIVATE ${flagname})
endforeach()
endif()
endfunction()
function(add_compile_flag_if_supported flagname targets)
check_c_compiler_flag("${flagname}" HAVE_FLAG_${flagname})
if (HAVE_FLAG_${flagname})
foreach(target ${targets})
target_compile_options(${target} PRIVATE ${flagname})
endforeach()
endif()
endfunction()
function(add_linker_flag_to_targets targets)
set(CHECKED_FLAGS
"-fstack-protector-all"
"-fstack-protector"
"-fstack-check"
"-fPIE"
"-pie"
"-Wl,-z,relro"
"-Wl,-z,now"
"-Wl,-z,noexecstack"
)
foreach(flag ${CHECKED_FLAGS})
add_linker_flag_if_supported(${flag} "${targets}")
endforeach()
endfunction()
function(add_debug_flag_if_supported flagname targets) function(add_debug_flag_if_supported flagname targets)
check_c_compiler_flag("${flagname}" HAVE_FLAG_${flagname}) check_c_compiler_flag("${flagname}" HAVE_FLAG_${flagname})
if (HAVE_FLAG_${flagname}) if (HAVE_FLAG_${flagname})
@ -44,10 +10,6 @@ function(add_debug_flag_if_supported flagname targets)
endfunction() endfunction()
function(add_compile_flag_to_targets targets) function(add_compile_flag_to_targets targets)
set(CHECKED_FLAGS
# Support address space layout randomization (ASLR)
"-fPIE"
)
set(CHECKED_DEBUG_FLAGS set(CHECKED_DEBUG_FLAGS
"-ggdb" "-ggdb"
"-g" "-g"
@ -82,9 +44,6 @@ function(add_compile_flag_to_targets targets)
"-Wunused-parameter" "-Wunused-parameter"
"-Wunused-function" "-Wunused-function"
) )
foreach(flag ${CHECKED_FLAGS})
add_compile_flag_if_supported(${flag} ${targets})
endforeach()
foreach(flag ${CHECKED_DEBUG_FLAGS}) foreach(flag ${CHECKED_DEBUG_FLAGS})
add_debug_flag_if_supported(${flag} ${targets}) add_debug_flag_if_supported(${flag} ${targets})
endforeach() endforeach()
@ -125,7 +84,24 @@ function(add_compile_flags target)
# Unrecognized compiler options are errors # Unrecognized compiler options are errors
target_compile_options(${target} PRIVATE $<$<CONFIG:DEBUG>:/options:strict>) target_compile_options(${target} PRIVATE $<$<CONFIG:DEBUG>:/options:strict>)
else() else()
add_linker_flag_to_targets(${target}) check_c_compiler_flag("-fstack-protector-all" HAVE_STACK_PROTECTOR_ALL)
if(HAVE_STACK_PROTECTOR_ALL)
target_link_options(${target} PRIVATE -fstack-protector-all)
else()
check_c_compiler_flag("-fstack-protector" HAVE_STACK_PROTECTOR)
if(HAVE_STACK_PROTECTOR)
target_link_options(${target} PRIVATE -fstack-protector)
else()
message(WARNING "No stack protection supported")
endif()
endif()
# Support address space layout randomization (ASLR)
target_compile_options(${target} PRIVATE $<$<NOT:$<C_COMPILER_ID:AppleClang>>:-fPIE>)
target_link_options(${target} PRIVATE $<$<NOT:$<C_COMPILER_ID:AppleClang>>:-fPIE -pie>)
target_link_options(${target} PRIVATE $<$<NOT:$<C_COMPILER_ID:AppleClang>>:-Wl,-z,relro>)
target_link_options(${target} PRIVATE $<$<NOT:$<C_COMPILER_ID:AppleClang>>:-Wl,-z,now>)
target_link_options(${target} PRIVATE $<$<NOT:$<C_COMPILER_ID:AppleClang>>:-Wl,-z,noexecstack>)
target_link_options(${target} PRIVATE -fstack-check)
add_compile_flag_to_targets(${target}) add_compile_flag_to_targets(${target})
endif() endif()
endfunction() endfunction()