llvm-project/libc/lib/CMakeLists.txt
Siva Chandra Reddy b875defc55 [libc] Build two different static archives libc.a and libm.a under full build.
We currently put everything in one single archive libc.a which breaks in
certain situations where the compiler drivers expect libm.a also. With
this change, we separate out libc.a and libm.a functions as is done
conventionally and put them in two different static archives.

One will now have to build two targets, `libc` and `libm` which produce
`libc.a` and `libm.a` respectively. Under default build, one still builds only
one target named `libc` which produces `libllvmlibc.a`.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D143005
2023-01-31 21:45:08 +00:00

59 lines
1.6 KiB
CMake

set(libc_archive_targets "")
set(libc_archive_names "")
set(libc_archive_entrypoint_lists "")
if(LLVM_LIBC_FULL_BUILD)
if(LIBC_TARGET_ARCHITECTURE_IS_GPU)
list(APPEND libc_archive_names cgpu mgpu)
else()
list(APPEND libc_archive_names c m)
endif()
list(APPEND libc_archive_targets libc libm)
list(APPEND libc_archive_entrypoint_lists
TARGET_LIBC_ENTRYPOINTS TARGET_LIBM_ENTRYPOINTS)
else()
list(APPEND libc_archive_names llvmlibc)
list(APPEND libc_archive_targets libc)
list(APPEND libc_archive_entrypoint_lists TARGET_LLVMLIBC_ENTRYPOINTS)
endif()
set(added_archive_targets "")
foreach(archive IN ZIP_LISTS
libc_archive_names libc_archive_targets libc_archive_entrypoint_lists)
if(NOT ${archive_2})
# If an entrypoint list is missing, then skip adding targets for it.
continue()
endif()
add_entrypoint_library(
${archive_1}
DEPENDS
${${archive_2}}
)
set_target_properties(
${archive_1}
PROPERTIES
ARCHIVE_OUTPUT_NAME ${archive_0}
)
list(APPEND added_archive_targets ${archive_1})
endforeach()
if(LIBC_TARGET_TRIPLE)
set(LIBC_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LIBC_TARGET_TRIPLE})
elseif(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT LIBC_GPU_BUILD)
set(LIBC_INSTALL_LIBRARY_DIR
lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE})
else()
set(LIBC_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX})
endif()
install(
TARGETS ${added_archive_targets}
ARCHIVE DESTINATION ${LIBC_INSTALL_LIBRARY_DIR}
COMPONENT libc-static-archives
)
add_llvm_install_targets(
install-libc-static-archives
DEPENDS ${added_archive_targets}
COMPONENT libc-static-archives
)