c140c80f0c
This allocator uses mmap for every allocation, performs explicit checks on the given arguments, adds a guard page after every allocation (while placing the allocation as close to it as possible), and, if configured to do so, will never release virtual addresses to catch a certain category of use-after-free bugs.
374 lines
13 KiB
Meson
374 lines
13 KiB
Meson
project('mlibc', default_options: ['warning_level=2', 'cpp_std=c++20'])
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fs = import('fs')
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rtdl_include_dirs = [
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include_directories('options/internal/include'),
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include_directories('options/internal' / host_machine.cpu_family() + '-include'),
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include_directories('options/rtdl/include'),
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]
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libc_include_dirs = [
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include_directories('options/internal/include'),
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include_directories('options/elf/include'),
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include_directories('options/lsb/include'),
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include_directories('options/rtdl/include'),
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include_directories('options/internal' / host_machine.cpu_family() + '-include')
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]
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rtdl_sources = [ ]
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rtdl_dso_sources = [ ]
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libc_sources = [ ]
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libc_sublibs = [ ]
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libc_deps = [ ]
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rtdl_deps = [ ]
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headers_only = get_option('headers_only')
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no_headers = get_option('mlibc_no_headers')
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library_type = get_option('default_library')
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build_tests = get_option('build_tests')
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build_tests_host_libc = get_option('build_tests_host_libc')
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disable_ansi_option = get_option('disable_ansi_option')
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disable_posix_option = get_option('disable_posix_option')
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disable_linux_option = get_option('disable_linux_option')
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disable_linux_headers = get_option('disable_linux_headers_option')
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disable_iconv_option = get_option('disable_iconv_option')
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disable_intl_option = get_option('disable_intl_option')
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disable_glibc_option = get_option('disable_glibc_option')
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disable_crypt_option = get_option('disable_crypt_option')
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disable_bsd_option = get_option('disable_bsd_option')
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internal_conf = configuration_data()
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mlibc_conf = configuration_data()
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if not headers_only
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cxxshim_dep = dependency('cxxshim', fallback: ['cxxshim', 'cxxshim_dep'])
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libc_deps += cxxshim_dep
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rtdl_deps += cxxshim_dep
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frigg_dep = dependency(
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'frigg',
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default_options: ['frigg_no_install=true'],
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fallback: ['frigg', 'frigg_dep'],
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)
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libc_deps += frigg_dep
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rtdl_deps += frigg_dep
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add_languages('c', 'cpp')
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c_compiler = meson.get_compiler('c')
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add_project_arguments('-Wno-unused-function', language: ['c', 'cpp'])
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add_project_arguments('-nostdinc', '-fno-builtin', language: ['c', 'cpp'])
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add_project_arguments('-fno-rtti', '-fno-exceptions', language: 'cpp')
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add_project_link_arguments('-nostdlib', language: ['c', 'cpp'])
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searchdirs = run_command(c_compiler.cmd_array(), '-print-search-dirs',
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check: true).stdout()
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searchdirs_arr = searchdirs.split('\n')
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searchline = 'install: '
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ccdir = ''
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if c_compiler.get_id() == 'clang'
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searchline = 'libraries: ='
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endif
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foreach line : searchdirs_arr
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if line.startswith(searchline)
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ccdir = line.strip(searchline)
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ccdir = ccdir.split(':')[0]
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break
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endif
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endforeach
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if ccdir == ''
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error('could not find compiler-specific header directory')
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endif
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if c_compiler.get_id() == 'gcc' and fs.exists(ccdir / 'include-fixed')
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rtdl_include_dirs += include_directories(ccdir / 'include-fixed')
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libc_include_dirs += include_directories(ccdir / 'include-fixed')
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endif
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rtdl_include_dirs += include_directories(ccdir / 'include')
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libc_include_dirs += include_directories(ccdir / 'include')
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endif
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internal_conf.set_quoted('MLIBC_SYSTEM_NAME', host_machine.system())
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internal_conf.set('MLIBC_MAP_DSO_SEGMENTS', false)
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internal_conf.set('MLIBC_MAP_FILE_WINDOWS', false)
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internal_conf.set('MLIBC_DEBUG_ALLOCATOR', get_option('debug_allocator'))
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#----------------------------------------------------------------------------------------
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# Configuration based on sysdeps.
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#----------------------------------------------------------------------------------------
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# Process sysdeps first, as sysdeps might want to disable unsupported options.
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if host_machine.system() == 'linux'
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disable_linux_headers = true
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rtdl_include_dirs += include_directories('sysdeps/linux/include')
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libc_include_dirs += include_directories('sysdeps/linux/include')
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subdir('sysdeps/linux')
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elif host_machine.system() == 'aero'
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rtdl_include_dirs += include_directories('sysdeps/aero/include')
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libc_include_dirs += include_directories('sysdeps/aero/include')
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subdir('sysdeps/aero')
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elif host_machine.system() == 'managarm'
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# TODO: Adopt the include_directories() commands from the managarm meson.build.
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rtdl_include_dirs += include_directories('sysdeps/managarm/include')
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libc_include_dirs += include_directories('sysdeps/managarm/include')
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internal_conf.set('MLIBC_MAP_DSO_SEGMENTS', true)
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internal_conf.set('MLIBC_MAP_FILE_WINDOWS', true)
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subdir('sysdeps/managarm')
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elif host_machine.system() == 'ironclad'
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# disable_linux_option = true
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rtdl_include_dirs += include_directories('sysdeps/ironclad/include')
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libc_include_dirs += include_directories('sysdeps/ironclad/include')
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subdir('sysdeps/ironclad')
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elif host_machine.system() == 'vinix'
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rtdl_include_dirs += include_directories('sysdeps/vinix/include')
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libc_include_dirs += include_directories('sysdeps/vinix/include')
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subdir('sysdeps/vinix')
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elif host_machine.system() == 'lemon'
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rtdl_include_dirs += include_directories('sysdeps/lemon/include')
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libc_include_dirs += include_directories('sysdeps/lemon/include')
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subdir('sysdeps/lemon')
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elif host_machine.system() == 'dripos'
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disable_linux_option = true
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rtdl_include_dirs += include_directories('sysdeps/dripos/include')
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libc_include_dirs += include_directories('sysdeps/dripos/include')
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subdir('sysdeps/dripos')
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else
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error('No sysdeps defined for OS: ' + host_machine.system())
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endif
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#----------------------------------------------------------------------------------------
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# Configuration based on enabled options.
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#----------------------------------------------------------------------------------------
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mlibc_conf.set('__MLIBC_ANSI_OPTION', not disable_ansi_option)
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mlibc_conf.set('__MLIBC_POSIX_OPTION', not disable_posix_option)
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mlibc_conf.set('__MLIBC_LINUX_OPTION', not disable_linux_option)
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mlibc_conf.set('__MLIBC_INTL_OPTION', not disable_intl_option)
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mlibc_conf.set('__MLIBC_ICONV_OPTION', not disable_iconv_option)
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mlibc_conf.set('__MLIBC_GLIBC_OPTION', not disable_glibc_option)
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mlibc_conf.set('__MLIBC_CRYPT_OPTION', not disable_crypt_option)
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mlibc_conf.set('__MLIBC_BSD_OPTION', not disable_bsd_option)
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if not disable_ansi_option
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rtdl_include_dirs += include_directories('options/ansi/include')
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libc_include_dirs += include_directories('options/ansi/include')
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endif
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if not disable_posix_option
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rtdl_include_dirs += include_directories('options/posix/include')
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libc_include_dirs += include_directories('options/posix/include')
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endif
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if not disable_iconv_option
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rtdl_include_dirs += include_directories('options/iconv/include')
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libc_include_dirs += include_directories('options/iconv/include')
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endif
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if not disable_intl_option
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libc_include_dirs += include_directories('options/intl/include')
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endif
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if not disable_linux_option
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rtdl_include_dirs += include_directories('options/linux/include')
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libc_include_dirs += include_directories('options/linux/include')
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endif
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if not disable_glibc_option
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rtdl_include_dirs += include_directories('options/glibc/include')
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libc_include_dirs += include_directories('options/glibc/include')
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endif
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if not disable_crypt_option
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libc_include_dirs += include_directories('options/crypt/include')
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endif
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if not disable_bsd_option
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libc_include_dirs += include_directories('options/bsd/include')
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endif
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rtdl_include_dirs += include_directories('options/linux-headers/include')
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libc_include_dirs += include_directories('options/linux-headers/include')
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rtdl_include_dirs += include_directories('options/elf/include')
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libc_include_dirs += include_directories('options/elf/include')
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libc_include_dirs += include_directories('.')
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#----------------------------------------------------------------------------------------
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configure_file(input: 'internal-config.h.in',
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output: 'internal-config.h',
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configuration: internal_conf)
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configure_file(input: 'mlibc-config.h.in',
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output: 'mlibc-config.h',
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configuration: mlibc_conf,
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install: not no_headers,
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install_dir: get_option('includedir'))
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internal_sources = [
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'options/internal/generic/allocator.cpp',
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'options/internal/generic/charcode.cpp',
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'options/internal/generic/charset.cpp',
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'options/internal/generic/debug.cpp',
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'options/internal/generic/ensure.cpp',
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'options/internal/generic/essential.cpp',
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'options/internal/generic/frigg.cpp',
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'options/internal/generic/global-config.cpp',
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'options/internal/generic/inline-emitter.cpp',
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'options/internal/generic/locale.cpp',
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'options/internal/generic/sigset.cpp',
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'options/internal/generic/strings.cpp',
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'options/internal/generic/ubsan.cpp',
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'options/internal/gcc/stack_protector.cpp',
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'options/internal/gcc/guard-abi.cpp',
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'options/internal/gcc/initfini.cpp',
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'options/internal/gcc-extra/cxxabi.cpp',
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'options/internal' / host_machine.cpu_family() / 'setjmp.S',
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]
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internal_dso_sources = [
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'options/internal/gcc-extra/mlibc_crtbegin.S',
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'options/internal' / host_machine.cpu_family() / 'mlibc_crtend.S',
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]
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if not no_headers
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install_headers(
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'options/internal/include/stdint.h'
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)
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install_headers(
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'options/internal/include/bits/wchar_t.h',
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'options/internal/include/bits/wchar.h',
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'options/internal/include/bits/wint_t.h',
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'options/internal/include/bits/size_t.h',
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'options/internal/include/bits/types.h',
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'options/internal/include/bits/ensure.h',
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'options/internal/include/bits/machine.h',
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'options/internal/include/bits/mbstate.h',
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'options/internal/include/bits/nl_item.h',
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'options/internal/include/bits/null.h',
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'options/internal/include/bits/off_t.h',
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'options/internal/include/bits/ssize_t.h',
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'options/internal/include/bits/sigset_t.h',
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'options/internal/include/bits/inline-definition.h',
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subdir: 'bits'
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)
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endif
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rtdl_sources += [
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'options/internal/gcc/stack_protector.cpp',
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'options/internal/gcc/guard-abi.cpp',
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'options/internal/generic/allocator.cpp',
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'options/internal/generic/debug.cpp',
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'options/internal/generic/ensure.cpp',
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'options/internal/generic/essential.cpp',
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'options/internal/generic/inline-emitter.cpp',
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'options/internal/generic/frigg.cpp',
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'options/internal/generic/ubsan.cpp',
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'options/rtdl/generic/main.cpp',
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'options/rtdl/generic/linker.cpp',
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'options/rtdl' / host_machine.cpu_family() / 'runtime.S'
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]
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rtdl_dso_sources += ['options/rtdl' / host_machine.cpu_family() / 'entry.S']
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subdir('options/elf')
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subdir('options/ansi')
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subdir('options/posix')
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subdir('options/lsb')
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subdir('options/glibc')
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subdir('options/linux')
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subdir('options/linux-headers')
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subdir('options/iconv')
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subdir('options/intl')
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subdir('options/crypt')
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subdir('options/bsd')
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rtlib_deps = []
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if not headers_only
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if host_machine.cpu_family() == 'aarch64' or host_machine.cpu_family() == 'riscv64'
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# Some architectures require us to link with libgcc or compiler_rt
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libgcc = meson.get_compiler('c').find_library('gcc', required: false)
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compiler_rt_name = 'libclang_rt.builtins-' + host_machine.cpu_family()
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compiler_rt = meson.get_compiler('c').find_library(compiler_rt_name, required: false)
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if libgcc.found()
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rtlib_deps += libgcc
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elif compiler_rt.found()
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rtlib_deps += compiler_rt
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else
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error('neither libgcc nor ' + compiler_rt_name + ' was found')
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endif
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endif
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ld_cpp_args = [
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'-fvisibility=hidden',
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'-fno-stack-protector',
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'-DMLIBC_BUILDING_RTDL'
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]
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libc_all_sources = [
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libc_sources,
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internal_sources,
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ansi_sources,
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lsb_sources,
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]
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# Our library have different behaviour when built as static and shared libraries.
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# Hence we need to rebuild the object files with a different define for each mode.
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if library_type in ['static', 'both']
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static_cpp_args = [
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'-DMLIBC_STATIC_BUILD',
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'-DFRIGG_HAVE_LIBC',
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]
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ld_static_lib = static_library('ld', rtdl_sources,
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name_prefix: '',
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cpp_args: ld_cpp_args + static_cpp_args,
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include_directories: rtdl_include_dirs,
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dependencies: rtdl_deps + rtlib_deps,
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install: false
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)
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libc_static = static_library('c', libc_all_sources,
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cpp_args: static_cpp_args + ['-fno-stack-protector'],
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include_directories: libc_include_dirs,
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dependencies: libc_deps + rtlib_deps,
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link_with: [ld_static_lib],
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link_whole: [libc_sublibs, ld_static_lib],
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install: true
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)
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endif
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if library_type in ['shared', 'both']
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ld_shared_lib = shared_library('ld', rtdl_sources + rtdl_dso_sources,
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name_prefix: '',
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cpp_args: ld_cpp_args,
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include_directories: rtdl_include_dirs,
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dependencies: rtdl_deps + rtlib_deps,
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install: true
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)
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libc_shared = shared_library('c', libc_all_sources + internal_dso_sources,
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include_directories: libc_include_dirs,
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dependencies: libc_deps + rtlib_deps,
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link_with: [ld_shared_lib],
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link_whole: libc_sublibs,
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install: true
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)
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endif
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library('pthread', 'dummy-libs/libpthread/src/dummy.cpp', install: true)
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library('rt', 'dummy-libs/librt/src/dummy.cpp', install: true)
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library('util', 'dummy-libs/libutil/src/dummy.cpp', install: true)
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library('m', 'dummy-libs/libm/src/dummy.cpp', install: true)
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if not disable_crypt_option
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library('crypt', 'dummy-libs/libcrypt/src/dummy.cpp', install: true)
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endif
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library('resolv', 'dummy-libs/libresolv/src/dummy.cpp', install: true)
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library('dl', 'dummy-libs/libdl/src/dummy.cpp', install: true)
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endif
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if build_tests
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subdir('tests/')
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endif
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