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serenity/Userland/Libraries/LibC/CMakeLists.txt
Gunnar Beutner 06883ed8a3 Kernel+Userland: Make the stack alignment comply with the System V ABI
The System V ABI for both x86 and x86_64 requires that the stack pointer
is 16-byte aligned on entry. Previously we did not align the stack
pointer properly.

As far as "main" was concerned the stack alignment was correct even
without this patch due to how the C++ _start function and the kernel
interacted, i.e. the kernel misaligned the stack as far as the ABI
was concerned but that misalignment (read: it was properly aligned for
a regular function call - but misaligned in terms of what the ABI
dictates) was actually expected by our _start function.
2021-07-10 01:41:57 +02:00

125 lines
3.5 KiB
CMake

set(LIBC_SOURCES
arpa/inet.cpp
assert.cpp
ctype.cpp
cxxabi.cpp
dirent.cpp
dlfcn.cpp
fcntl.cpp
fenv.cpp
getopt.cpp
grp.cpp
inttypes.cpp
ioctl.cpp
libcinit.cpp
libgen.cpp
link.cpp
locale.cpp
malloc.cpp
mntent.cpp
net.cpp
netdb.cpp
poll.cpp
pthread_forward.cpp
pthread_integration.cpp
pthread_tls.cpp
pty.cpp
pwd.cpp
qsort.cpp
scanf.cpp
sched.cpp
serenity.cpp
shadow.cpp
signal.cpp
spawn.cpp
stat.cpp
stdio.cpp
stdlib.cpp
string.cpp
strings.cpp
stubs.cpp
syslog.cpp
sys/mman.cpp
sys/prctl.cpp
sys/ptrace.cpp
sys/select.cpp
sys/socket.cpp
sys/uio.cpp
sys/wait.cpp
sys/statvfs.cpp
termcap.cpp
termios.cpp
time.cpp
times.cpp
ulimit.cpp
unistd.cpp
utime.cpp
utsname.cpp
wchar.cpp
wctype.cpp
)
file(GLOB AK_SOURCES CONFIGURE_DEPENDS "../../../AK/*.cpp")
file(GLOB ELF_SOURCES CONFIGURE_DEPENDS "../LibELF/*.cpp")
if ("${SERENITY_ARCH}" STREQUAL "i686")
set(ASM_SOURCES "arch/i386/setjmp.S")
set(ELF_SOURCES ${ELF_SOURCES} ../LibELF/Arch/i386/entry.S ../LibELF/Arch/i386/plt_trampoline.S)
elseif ("${SERENITY_ARCH}" STREQUAL "x86_64")
set(ASM_SOURCES "arch/x86_64/setjmp.S")
set(ELF_SOURCES ${ELF_SOURCES} ../LibELF/Arch/x86_64/entry.S ../LibELF/Arch/x86_64/plt_trampoline.S)
endif()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -DSERENITY_LIBC_BUILD")
add_library(crt0 STATIC crt0.cpp)
add_custom_command(
TARGET crt0
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_OBJECTS:crt0> ${CMAKE_INSTALL_PREFIX}/usr/lib/crt0.o
)
add_library(crt0_shared STATIC crt0_shared.cpp)
add_custom_command(
TARGET crt0_shared
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_OBJECTS:crt0_shared> ${CMAKE_INSTALL_PREFIX}/usr/lib/crt0_shared.o
)
set_source_files_properties (ssp.cpp PROPERTIES COMPILE_FLAGS
"-fno-stack-protector")
add_library(ssp STATIC ssp.cpp)
add_custom_command(
TARGET ssp
COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_OBJECTS:ssp> ${CMAKE_INSTALL_PREFIX}/usr/lib/ssp.o
)
set(SOURCES ${LIBC_SOURCES} ${AK_SOURCES} ${ELF_SOURCES} ${ASM_SOURCES})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libstdc++")
add_library(LibCStaticWithoutDeps STATIC ${SOURCES})
target_link_libraries(LibCStaticWithoutDeps ssp)
add_dependencies(LibCStaticWithoutDeps LibM LibSystem LibUBSanitizer)
add_custom_target(LibCStatic
COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibCStaticWithoutDeps>
COMMAND ${CMAKE_AR} -x $<TARGET_FILE:ssp>
COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibSystemStatic>
COMMAND ${CMAKE_AR} -x $<TARGET_FILE:LibUBSanitizerStatic>
COMMAND ${CMAKE_AR} -qcs ${CMAKE_CURRENT_BINARY_DIR}/libc.a *.o
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS LibCStaticWithoutDeps ssp LibSystemStatic LibUBSanitizerStatic
)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libc.a DESTINATION ${CMAKE_INSTALL_PREFIX}/usr/lib/)
file(GLOB TEMP_OBJ_FILES ${CMAKE_CURRENT_BINARY_DIR}/*.o)
set_property(
TARGET LibCStatic
APPEND
PROPERTY ADDITIONAL_CLEAN_FILES ${TEMP_OBJ_FILES}
)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libstdc++")
serenity_libc(LibC c)
add_dependencies(LibC crt0 crt0_shared)
target_link_libraries(LibC ssp system)
# We mark LibCStatic as a dependency of LibC because this triggers the build of the LibCStatic target
add_dependencies(LibC LibM LibSystem LibCStatic)