2a65d0388c
This is an alternate approach to the patches proposed in D153897 and D153794. Rather than exporting a single header that can be included on the GPU in all circumstances, this patch chooses to instead generate a separate set of headers that only provides the declarations. This can then be used by external tooling to set up what's on the GPU. This leaves room for header hacks for offloading languages without needing to worry about the `libc` implementation. Currently this generates a set of headers that only contain the declarations. These will then be installed to a new clang resource directory called `llvm_libc_wrappers/` which will house the shim code. We can then automaticlaly include this from `clang` when offloading to wrap around the headers while specifying what's on the GPU. Reviewed By: jdoerfert, JonChesterfield Differential Revision: https://reviews.llvm.org/D154036
565 lines
12 KiB
CMake
565 lines
12 KiB
CMake
set(LIBC_INCLUDE_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
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set(LIBC_INCLUDE_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
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include(LLVMLibCHeaderRules)
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# The GPU build wants to install files in the compiler's resource directory.
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if(LIBC_TARGET_ARCHITECTURE_IS_GPU)
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include(GetClangResourceDir)
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endif()
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add_subdirectory(llvm-libc-macros)
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add_subdirectory(llvm-libc-types)
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add_header(
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llvm_libc_common_h
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HDR
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__llvm-libc-common.h
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)
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add_gen_header(
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ctype
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DEF_FILE ctype.h.def
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GEN_HDR ctype.h
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DEPENDS
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.llvm_libc_common_h
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)
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add_gen_header(
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dirent
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DEF_FILE dirent.h.def
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GEN_HDR dirent.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.ino_t
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.llvm-libc-types.DIR
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.llvm-libc-types.struct_dirent
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)
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add_gen_header(
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fcntl
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DEF_FILE fcntl.h.def
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GEN_HDR fcntl.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.fcntl_macros
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.llvm-libc-types.mode_t
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)
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add_gen_header(
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fenv
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DEF_FILE fenv.h.def
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GEN_HDR fenv.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.fenv_macros
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.llvm-libc-types.fenv_t
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.llvm-libc-types.fexcept_t
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)
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add_gen_header(
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inttypes
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DEF_FILE inttypes.h.def
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GEN_HDR inttypes.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.imaxdiv_t
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)
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add_gen_header(
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math
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DEF_FILE math.h.def
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GEN_HDR math.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.math_macros
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.llvm-libc-types.double_t
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.llvm-libc-types.float_t
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)
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# TODO: This should be conditional on POSIX networking being included.
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file(MAKE_DIRECTORY "arpa")
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add_gen_header(
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arpa_inet
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DEF_FILE arpa/inet.h.def
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GEN_HDR arpa/inet.h
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DEPENDS
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.llvm_libc_common_h
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)
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add_gen_header(
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assert
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DEF_FILE assert.h.def
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GEN_HDR assert.h
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DEPENDS
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.llvm_libc_common_h
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)
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add_gen_header(
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setjmp
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DEF_FILE setjmp.h.def
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GEN_HDR setjmp.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.jmp_buf
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)
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add_gen_header(
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string
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DEF_FILE string.h.def
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GEN_HDR string.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.null_macro
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.llvm-libc-types.size_t
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)
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add_gen_header(
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strings
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DEF_FILE strings.h.def
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GEN_HDR strings.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.size_t
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)
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add_gen_header(
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time
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DEF_FILE time.h.def
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GEN_HDR time.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.time_macros
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.llvm-libc-types.clock_t
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.llvm-libc-types.time_t
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.llvm-libc-types.struct_tm
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.llvm-libc-types.struct_timespec
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.llvm-libc-types.struct_timeval
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.llvm-libc-types.clockid_t
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)
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add_gen_header(
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threads
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DEF_FILE threads.h.def
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GEN_HDR threads.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.__call_once_func_t
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.llvm-libc-types.once_flag
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.llvm-libc-types.cnd_t
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.llvm-libc-types.mtx_t
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.llvm-libc-types.thrd_t
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.llvm-libc-types.thrd_start_t
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.llvm-libc-types.tss_t
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.llvm-libc-types.tss_dtor_t
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)
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add_gen_header(
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errno
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DEF_FILE errno.h.def
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GEN_HDR errno.h
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DEPENDS
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.llvm-libc-macros.generic_error_number_macros
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)
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add_gen_header(
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signal
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DEF_FILE signal.h.def
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PARAMS
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platform_signal=../config/${LIBC_TARGET_OS}/signal.h.in
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GEN_HDR signal.h
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DATA_FILES
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../config/${LIBC_TARGET_OS}/signal.h.in
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DEPENDS
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.llvm-libc-macros.signal_macros
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.llvm-libc-types.sig_atomic_t
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.llvm-libc-types.sigset_t
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.llvm-libc-types.struct_sigaction
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.llvm-libc-types.union_sigval
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.llvm-libc-types.siginfo_t
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.llvm-libc-types.stack_t
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.llvm-libc-types.pid_t
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)
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add_gen_header(
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stdio
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DEF_FILE stdio.h.def
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GEN_HDR stdio.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.file_seek_macros
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.llvm-libc-macros.stdio_macros
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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.llvm-libc-types.FILE
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.llvm-libc-types.cookie_io_functions_t
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)
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add_gen_header(
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stdlib
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DEF_FILE stdlib.h.def
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GEN_HDR stdlib.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.stdlib_macros
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.llvm-libc-types.div_t
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.llvm-libc-types.ldiv_t
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.llvm-libc-types.lldiv_t
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.llvm-libc-types.size_t
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.llvm-libc-types.__bsearchcompare_t
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.llvm-libc-types.__qsortcompare_t
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.llvm-libc-types.__qsortrcompare_t
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.llvm-libc-types.__atexithandler_t
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)
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add_gen_header(
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unistd
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DEF_FILE unistd.h.def
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GEN_HDR unistd.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.file_seek_macros
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.llvm-libc-macros.unistd_macros
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.llvm-libc-types.__exec_argv_t
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.llvm-libc-types.__exec_envp_t
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.llvm-libc-types.off_t
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.llvm-libc-types.pid_t
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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.llvm-libc-types.uid_t
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.llvm-libc-types.__getoptargv_t
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)
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add_gen_header(
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pthread
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DEF_FILE pthread.h.def
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GEN_HDR pthread.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.__atfork_callback_t
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.llvm-libc-types.__pthread_once_func_t
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.llvm-libc-types.__pthread_start_t
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.llvm-libc-types.__pthread_tss_dtor_t
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.llvm-libc-types.pthread_attr_t
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.llvm-libc-types.pthread_mutex_t
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.llvm-libc-types.pthread_mutexattr_t
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.llvm-libc-types.pthread_t
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.llvm-libc-types.pthread_key_t
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.llvm-libc-types.pthread_once_t
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)
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add_gen_header(
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sched
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DEF_FILE sched.h.def
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GEN_HDR sched.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sched_macros
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.llvm-libc-types.cpu_set_t
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.llvm-libc-types.pid_t
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.llvm-libc-types.size_t
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.llvm-libc-types.struct_sched_param
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# Needed according to posix standard
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.llvm-libc-types.time_t
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.llvm-libc-types.struct_timespec
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)
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add_gen_header(
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spawn
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DEF_FILE spawn.h.def
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GEN_HDR spawn.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.mode_t
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.llvm-libc-types.pid_t
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.llvm-libc-types.posix_spawnattr_t
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.llvm-libc-types.posix_spawn_file_actions_t
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)
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# TODO: Not all platforms will have a include/sys directory. Add the sys
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# directory and the targets for sys/*.h files conditional to the OS requiring
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# them.
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file(MAKE_DIRECTORY "sys")
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add_gen_header(
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sys_auxv
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DEF_FILE sys/auxv.h.def
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GEN_HDR sys/auxv.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_auxv_macros
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)
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add_gen_header(
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sys_ioctl
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DEF_FILE sys/ioctl.h.def
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GEN_HDR sys/ioctl.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_ioctl_macros
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)
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add_gen_header(
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sys_mman
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DEF_FILE sys/mman.h.def
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GEN_HDR sys/mman.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_mman_macros
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.llvm-libc-types.off_t
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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)
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add_gen_header(
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sys_prctl
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DEF_FILE sys/prctl.h.def
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GEN_HDR sys/prctl.h
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DEPENDS
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.llvm_libc_common_h
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)
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add_gen_header(
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sys_random
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DEF_FILE sys/random.h.def
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GEN_HDR sys/random.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_random_macros
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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)
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add_gen_header(
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sys_resource
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DEF_FILE sys/resource.h.def
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GEN_HDR sys/resource.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_resource_macros
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.llvm-libc-types.rlim_t
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.llvm-libc-types.struct_rlimit
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)
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add_gen_header(
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sys_stat
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DEF_FILE sys/stat.h.def
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GEN_HDR sys/stat.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_stat_macros
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.llvm-libc-types.mode_t
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.llvm-libc-types.dev_t
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.llvm-libc-types.ino_t
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.llvm-libc-types.nlink_t
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.llvm-libc-types.uid_t
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.llvm-libc-types.gid_t
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.llvm-libc-types.off_t
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.llvm-libc-types.struct_timespec
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.llvm-libc-types.struct_timeval
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.llvm-libc-types.blksize_t
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.llvm-libc-types.blkcnt_t
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.llvm-libc-types.struct_stat
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)
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add_gen_header(
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sys_select
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DEF_FILE sys/select.h.def
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GEN_HDR sys/select.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_select_macros
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.llvm-libc-types.fd_set
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.llvm-libc-types.sigset_t
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.llvm-libc-types.suseconds_t
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.llvm-libc-types.time_t
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.llvm-libc-types.struct_timespec
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.llvm-libc-types.struct_timeval
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)
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add_gen_header(
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sys_sendfile
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DEF_FILE sys/sendfile.h.def
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GEN_HDR sys/sendfile.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.off_t
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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)
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add_gen_header(
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sys_socket
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DEF_FILE sys/socket.h.def
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GEN_HDR sys/socket.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_socket_macros
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.llvm-libc-types.struct_sockaddr
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.llvm-libc-types.sa_family_t
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)
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add_gen_header(
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sys_syscall
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DEF_FILE sys/syscall.h.def
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GEN_HDR sys/syscall.h
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PARAMS
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syscall_numbers=../config/${LIBC_TARGET_OS}/syscall_numbers.h.inc
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DATA_FILES
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../config/${LIBC_TARGET_OS}/syscall_numbers.h.inc
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)
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add_gen_header(
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sys_time
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DEF_FILE sys/time.h.def
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GEN_HDR sys/time.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.struct_timeval
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.llvm-libc-macros.sys_time_macros
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)
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add_gen_header(
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sys_types
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DEF_FILE sys/types.h.def
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GEN_HDR sys/types.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.blkcnt_t
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.llvm-libc-types.blksize_t
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.llvm-libc-types.clockid_t
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.llvm-libc-types.dev_t
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.llvm-libc-types.gid_t
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.llvm-libc-types.ino_t
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.llvm-libc-types.mode_t
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.llvm-libc-types.nlink_t
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.llvm-libc-types.off_t
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.llvm-libc-types.pid_t
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.llvm-libc-types.pthread_attr_t
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.llvm-libc-types.pthread_key_t
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.llvm-libc-types.pthread_mutex_t
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.llvm-libc-types.pthread_mutexattr_t
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.llvm-libc-types.pthread_once_t
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.llvm-libc-types.pthread_t
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.llvm-libc-types.size_t
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.llvm-libc-types.ssize_t
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.llvm-libc-types.suseconds_t
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.llvm-libc-types.time_t
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.llvm-libc-types.uid_t
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)
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add_gen_header(
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sys_utsname
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DEF_FILE sys/utsname.h.def
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GEN_HDR sys/utsname.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.struct_utsname
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)
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add_gen_header(
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sys_wait
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DEF_FILE sys/wait.h.def
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GEN_HDR sys/wait.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.sys_wait_macros
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.llvm-libc-types.pid_t
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.llvm-libc-types.struct_rusage
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)
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add_gen_header(
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termios
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DEF_FILE termios.h.def
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GEN_HDR termios.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.termios_macros
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.llvm-libc-types.cc_t
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.llvm-libc-types.pid_t
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.llvm-libc-types.speed_t
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.llvm-libc-types.struct_termios
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.llvm-libc-types.tcflag_t
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)
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add_gen_header(
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wchar
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DEF_FILE wchar.h.def
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GEN_HDR wchar.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-macros.wchar_macros
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.llvm-libc-types.size_t
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.llvm-libc-types.wint_t
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.llvm-libc-types.wchar_t
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)
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if(LIBC_TARGET_ARCHITECTURE_IS_GPU)
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file(MAKE_DIRECTORY "gpu")
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add_gen_header(
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gpu_rpc
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DEF_FILE gpu/rpc.h.def
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GEN_HDR gpu/rpc.h
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DEPENDS
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.llvm_libc_common_h
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.llvm-libc-types.rpc_opcodes_t
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)
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endif()
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if(NOT LLVM_LIBC_FULL_BUILD)
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# We don't install headers in non-fullbuild mode.
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return()
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endif()
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function(get_all_install_header_targets out_var)
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set(all_deps ${ARGN})
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foreach(target IN LISTS ARGN)
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get_target_property(deps ${target} DEPS)
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if(NOT deps)
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continue()
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endif()
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list(APPEND all_deps ${deps})
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get_all_install_header_targets(nested_deps ${deps})
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list(APPEND all_deps ${nested_deps})
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|
endforeach()
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list(REMOVE_DUPLICATES all_deps)
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|
set(${out_var} ${all_deps} PARENT_SCOPE)
|
|
endfunction(get_all_install_header_targets)
|
|
|
|
get_all_install_header_targets(all_install_header_targets ${TARGET_PUBLIC_HEADERS})
|
|
add_library(libc-headers INTERFACE)
|
|
add_dependencies(libc-headers ${all_install_header_targets})
|
|
target_include_directories(libc-headers SYSTEM INTERFACE ${LIBC_INCLUDE_DIR})
|
|
|
|
foreach(target IN LISTS all_install_header_targets)
|
|
get_target_property(header_file ${target} HEADER_FILE_PATH)
|
|
if(NOT header_file)
|
|
message(FATAL_ERROR "Installable header file '${target}' does not have the "
|
|
"HEADER_FILE_PATH property set.")
|
|
endif()
|
|
file(RELATIVE_PATH relative_path ${LIBC_INCLUDE_BINARY_DIR} ${header_file})
|
|
get_filename_component(nested_dir ${relative_path} DIRECTORY)
|
|
install(FILES ${header_file}
|
|
DESTINATION ${LIBC_INSTALL_INCLUDE_DIR}/${nested_dir}
|
|
COMPONENT libc-headers)
|
|
# The GPU optionally provides the supported declarations externally so
|
|
# offloading languages like CUDA and OpenMP know what is supported by libc. We
|
|
# install these in the compiler's resource directory at a preset location.
|
|
if(LIBC_TARGET_ARCHITECTURE_IS_GPU AND PACKAGE_VERSION)
|
|
get_target_property(decls_file ${target} DECLS_FILE_PATH)
|
|
if(NOT decls_file)
|
|
continue()
|
|
endif()
|
|
get_clang_resource_dir(resource_dir SUBDIR include)
|
|
file(RELATIVE_PATH relative_path ${LIBC_INCLUDE_BINARY_DIR} ${decls_file})
|
|
get_filename_component(nested_dir ${relative_path} DIRECTORY)
|
|
set(install_dir
|
|
${CMAKE_INSTALL_PREFIX}/${resource_dir}/llvm_libc_wrappers/${nested_dir})
|
|
install(FILES ${decls_file}
|
|
DESTINATION ${install_dir}
|
|
COMPONENT libc-headers)
|
|
endif()
|
|
endforeach()
|