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building glibc from source

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This commit is contained in:
Andrew Kelley 2019-03-05 13:26:43 -05:00
parent aeb16010f3
commit c5fdea59d3
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GPG Key ID: 7C5F548F728501A9
8 changed files with 363 additions and 87 deletions
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4
CMakeLists.txt
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@ -1270,7 +1270,6 @@ set(ZIG_LIBC_FILES
"glibc/csu/elf-init.c" "glibc/csu/elf-init.c"
"glibc/csu/init.c" "glibc/csu/init.c"
"glibc/debug/stack_chk_fail_local.c" "glibc/debug/stack_chk_fail_local.c"
"glibc/debug/warning-nop.c"
"glibc/include/alloca.h" "glibc/include/alloca.h"
"glibc/include/bits/types.h" "glibc/include/bits/types.h"
"glibc/include/bits/types/__locale_t.h" "glibc/include/bits/types/__locale_t.h"
@ -1399,6 +1398,9 @@ set(ZIG_LIBC_FILES
"glibc/bits/signum-generic.h" "glibc/bits/signum-generic.h"
"glibc/include/bits/types/sig_atomic_t.h" "glibc/include/bits/types/sig_atomic_t.h"
"glibc/signal/bits/types/sig_atomic_t.h" "glibc/signal/bits/types/sig_atomic_t.h"
"glibc/sysdeps/unix/sysv/linux/x86/bits/stat.h"
"glibc/sysdeps/unix/sysv/linux/generic/bits/stat.h"
"glibc/sysdeps/unix/sysv/linux/bits/stat.h"
"symbols.zig" "symbols.zig"
) )

70
libc/glibc/debug/warning-nop.c
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@ -1,70 +0,0 @@
/* Dummy nop functions to elicit link-time warnings.
Copyright (C) 2005-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
In addition to the permissions in the GNU Lesser General Public
License, the Free Software Foundation gives you unlimited
permission to link the compiled version of this file with other
programs, and to distribute those programs without any restriction
coming from the use of this file. (The GNU Lesser General Public
License restrictions do apply in other respects; for example, they
cover modification of the file, and distribution when not linked
into another program.)
Note that people who make modified versions of this file are not
obligated to grant this special exception for their modified
versions; it is their choice whether to do so. The GNU Lesser
General Public License gives permission to release a modified
version without this exception; this exception also makes it
possible to release a modified version which carries forward this
exception.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/cdefs.h>
static void
__attribute__ ((used))
nop (void)
{
}
/* Don't insert any other #include's before this #undef! */
#undef __warndecl
#define __warndecl(name, msg) \
extern void name (void) __attribute__ ((alias ("nop"))) attribute_hidden; \
link_warning (name, msg)
#undef __USE_FORTIFY_LEVEL
#define __USE_FORTIFY_LEVEL 99
/* Following here we need an #include for each public header file
that uses __warndecl. */
/* Define away to avoid warnings with compilers that do not have these
builtins. */
#define __builtin___memcpy_chk(dest, src, len, bos) NULL
#define __builtin___memmove_chk(dest, src, len, bos) NULL
#define __builtin___mempcpy_chk(dest, src, len, bos) NULL
#define __builtin___memset_chk(dest, ch, len, bos) NULL
#define __builtin___stpcpy_chk(dest, src, bos) NULL
#define __builtin___strcat_chk(dest, src, bos) NULL
#define __builtin___strcpy_chk(dest, src, bos) NULL
#define __builtin___strncat_chk(dest, src, len, bos) NULL
#define __builtin___strncpy_chk(dest, src, len, bos) NULL
#define __builtin_object_size(bos, level) 0
#include <string.h>

11
libc/glibc/nptl/pthread_atfork.c
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@ -33,9 +33,14 @@
License along with the GNU C Library; if not, see License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */ <http://www.gnu.org/licenses/>. */
#include "pthreadP.h" extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
#include <fork.h> void (*child) (void));
#include <dso_handle.h> extern int __register_atfork (void (*__prepare) (void),
void (*__parent) (void),
void (*__child) (void),
void *dso_handle);
libc_hidden_proto (__register_atfork)
extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
/* Hide the symbol so that no definition but the one locally in the /* Hide the symbol so that no definition but the one locally in the

8
libc/glibc/stdlib/at_quick_exit.c
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@ -32,14 +32,12 @@
License along with the GNU C Library; if not, see License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */ <http://www.gnu.org/licenses/>. */
#include <stdlib.h> extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
#include <dso_handle.h> extern int __cxa_at_quick_exit (void (*func) (void *), void *d);
#include "exit.h"
/* Register FUNC to be executed by `quick_exit'. */ /* Register FUNC to be executed by `quick_exit'. */
int int
attribute_hidden __attribute__ ((__visibility__ ("hidden")))
at_quick_exit (void (*func) (void)) at_quick_exit (void (*func) (void))
{ {
return __cxa_at_quick_exit ((void (*) (void *)) func, __dso_handle); return __cxa_at_quick_exit ((void (*) (void *)) func, __dso_handle);

12
libc/glibc/stdlib/atexit.c
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@ -32,16 +32,14 @@
License along with the GNU C Library; if not, see License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */ <http://www.gnu.org/licenses/>. */
#include <stdlib.h> extern int __cxa_atexit (void (*func) (void *), void *arg, void *d);
#include <dso_handle.h> libc_hidden_proto (__cxa_atexit);
#include "exit.h" extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
/* Register FUNC to be executed by `exit'. */ /* Register FUNC to be executed by `exit'. */
int int
#ifndef atexit __attribute__ ((__visibility__ ("hidden")))
attribute_hidden
#endif
atexit (void (*func) (void)) atexit (void (*func) (void))
{ {
return __cxa_atexit ((void (*) (void *)) func, NULL, __dso_handle); return __cxa_atexit ((void (*) (void *)) func, 0, __dso_handle);
} }

172
libc/glibc/sysdeps/unix/sysv/linux/bits/stat.h Normal file
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@ -0,0 +1,172 @@
/* Copyright (C) 1992-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#if !defined _SYS_STAT_H && !defined _FCNTL_H
# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
#endif
#ifndef _BITS_STAT_H
#define _BITS_STAT_H 1
/* Versions of the `struct stat' data structure. */
#define _STAT_VER_LINUX_OLD 1
#define _STAT_VER_KERNEL 1
#define _STAT_VER_SVR4 2
#define _STAT_VER_LINUX 3
#define _STAT_VER _STAT_VER_LINUX /* The one defined below. */
/* Versions of the `xmknod' interface. */
#define _MKNOD_VER_LINUX 1
#define _MKNOD_VER_SVR4 2
#define _MKNOD_VER _MKNOD_VER_LINUX /* The bits defined below. */
struct stat
{
__dev_t st_dev; /* Device. */
unsigned short int __pad1;
#ifndef __USE_FILE_OFFSET64
__ino_t st_ino; /* File serial number. */
#else
__ino_t __st_ino; /* 32bit file serial number. */
#endif
__mode_t st_mode; /* File mode. */
__nlink_t st_nlink; /* Link count. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
__dev_t st_rdev; /* Device number, if device. */
unsigned short int __pad2;
#ifndef __USE_FILE_OFFSET64
__off_t st_size; /* Size of file, in bytes. */
#else
__off64_t st_size; /* Size of file, in bytes. */
#endif
__blksize_t st_blksize; /* Optimal block size for I/O. */
#ifndef __USE_FILE_OFFSET64
__blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
#else
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
#endif
#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
#endif
#ifndef __USE_FILE_OFFSET64
unsigned long int __glibc_reserved4;
unsigned long int __glibc_reserved5;
#else
__ino64_t st_ino; /* File serial number. */
#endif
};
#ifdef __USE_LARGEFILE64
struct stat64
{
__dev_t st_dev; /* Device. */
unsigned int __pad1;
__ino_t __st_ino; /* 32bit file serial number. */
__mode_t st_mode; /* File mode. */
__nlink_t st_nlink; /* Link count. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
__dev_t st_rdev; /* Device number, if device. */
unsigned int __pad2;
__off64_t st_size; /* Size of file, in bytes. */
__blksize_t st_blksize; /* Optimal block size for I/O. */
__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
# ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
# endif
__ino64_t st_ino; /* File serial number. */
};
#endif
/* Tell code we have these members. */
#define _STATBUF_ST_BLKSIZE
#define _STATBUF_ST_RDEV
/* Nanosecond resolution time values are supported. */
#define _STATBUF_ST_NSEC
/* Encoding of the file mode. */
#define __S_IFMT 0170000 /* These bits determine file type. */
/* File types. */
#define __S_IFDIR 0040000 /* Directory. */
#define __S_IFCHR 0020000 /* Character device. */
#define __S_IFBLK 0060000 /* Block device. */
#define __S_IFREG 0100000 /* Regular file. */
#define __S_IFIFO 0010000 /* FIFO. */
#define __S_IFLNK 0120000 /* Symbolic link. */
#define __S_IFSOCK 0140000 /* Socket. */
/* POSIX.1b objects. Note that these macros always evaluate to zero. But
they do it by enforcing the correct use of the macros. */
#define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
/* Protection bits. */
#define __S_ISUID 04000 /* Set user ID on execution. */
#define __S_ISGID 02000 /* Set group ID on execution. */
#define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
#define __S_IREAD 0400 /* Read by owner. */
#define __S_IWRITE 0200 /* Write by owner. */
#define __S_IEXEC 0100 /* Execute by owner. */
#ifdef __USE_ATFILE
# define UTIME_NOW ((1l << 30) - 1l)
# define UTIME_OMIT ((1l << 30) - 2l)
#endif
#endif /* bits/stat.h */

171
libc/glibc/sysdeps/unix/sysv/linux/generic/bits/stat.h Normal file
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@ -0,0 +1,171 @@
/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#if !defined _SYS_STAT_H && !defined _FCNTL_H
# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
#endif
#ifndef _BITS_STAT_H
#define _BITS_STAT_H 1
#include <endian.h>
#include <bits/wordsize.h>
/* 64-bit libc uses the kernel's 'struct stat', accessed via the
stat() syscall; 32-bit libc uses the kernel's 'struct stat64'
and accesses it via the stat64() syscall. All the various
APIs offered by libc use the kernel shape for their struct stat
structure; the only difference is that 32-bit programs not
using __USE_FILE_OFFSET64 only see the low 32 bits of some
of the fields (specifically st_ino, st_size, and st_blocks). */
#define _STAT_VER_KERNEL 0
#define _STAT_VER_LINUX 0
#define _STAT_VER _STAT_VER_KERNEL
/* Versions of the `xmknod' interface. */
#define _MKNOD_VER_LINUX 0
#if defined __USE_FILE_OFFSET64
# define __field64(type, type64, name) type64 name
#elif __WORDSIZE == 64
# define __field64(type, type64, name) type name
#elif __BYTE_ORDER == __LITTLE_ENDIAN
# define __field64(type, type64, name) \
type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
#else
# define __field64(type, type64, name) \
int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
#endif
struct stat
{
__dev_t st_dev; /* Device. */
__field64(__ino_t, __ino64_t, st_ino); /* File serial number. */
__mode_t st_mode; /* File mode. */
__nlink_t st_nlink; /* Link count. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
__dev_t st_rdev; /* Device number, if device. */
__dev_t __pad1;
__field64(__off_t, __off64_t, st_size); /* Size of file, in bytes. */
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__field64(__blkcnt_t, __blkcnt64_t, st_blocks); /* 512-byte blocks */
#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
#endif
int __glibc_reserved[2];
};
#undef __field64
#ifdef __USE_LARGEFILE64
struct stat64
{
__dev_t st_dev; /* Device. */
__ino64_t st_ino; /* File serial number. */
__mode_t st_mode; /* File mode. */
__nlink_t st_nlink; /* Link count. */
__uid_t st_uid; /* User ID of the file's owner. */
__gid_t st_gid; /* Group ID of the file's group.*/
__dev_t st_rdev; /* Device number, if device. */
__dev_t __pad1;
__off64_t st_size; /* Size of file, in bytes. */
__blksize_t st_blksize; /* Optimal block size for I/O. */
int __pad2;
__blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
#ifdef __USE_XOPEN2K8
/* Nanosecond resolution timestamps are stored in a format
equivalent to 'struct timespec'. This is the type used
whenever possible but the Unix namespace rules do not allow the
identifier 'timespec' to appear in the <sys/stat.h> header.
Therefore we have to handle the use of this header in strictly
standard-compliant sources special. */
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
#else
__time_t st_atime; /* Time of last access. */
unsigned long int st_atimensec; /* Nscecs of last access. */
__time_t st_mtime; /* Time of last modification. */
unsigned long int st_mtimensec; /* Nsecs of last modification. */
__time_t st_ctime; /* Time of last status change. */
unsigned long int st_ctimensec; /* Nsecs of last status change. */
#endif
int __glibc_reserved[2];
};
#endif
/* Tell code we have these members. */
#define _STATBUF_ST_BLKSIZE
#define _STATBUF_ST_RDEV
/* Nanosecond resolution time values are supported. */
#define _STATBUF_ST_NSEC
/* Encoding of the file mode. */
#define __S_IFMT 0170000 /* These bits determine file type. */
/* File types. */
#define __S_IFDIR 0040000 /* Directory. */
#define __S_IFCHR 0020000 /* Character device. */
#define __S_IFBLK 0060000 /* Block device. */
#define __S_IFREG 0100000 /* Regular file. */
#define __S_IFIFO 0010000 /* FIFO. */
#define __S_IFLNK 0120000 /* Symbolic link. */
#define __S_IFSOCK 0140000 /* Socket. */
/* POSIX.1b objects. Note that these macros always evaluate to zero. But
they do it by enforcing the correct use of the macros. */
#define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
/* Protection bits. */
#define __S_ISUID 04000 /* Set user ID on execution. */
#define __S_ISGID 02000 /* Set group ID on execution. */
#define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
#define __S_IREAD 0400 /* Read by owner. */
#define __S_IWRITE 0200 /* Write by owner. */
#define __S_IEXEC 0100 /* Execute by owner. */
#ifdef __USE_ATFILE
# define UTIME_NOW ((1l << 30) - 1l)
# define UTIME_OMIT ((1l << 30) - 2l)
#endif
#endif /* bits/stat.h */

2
src/link.cpp
View File

@ -239,7 +239,6 @@ static const char *get_libc_crt_file(CodeGen *parent, const char *file) {
{"mknod", "glibc" OS_SEP "io" OS_SEP "mknod.c"}, {"mknod", "glibc" OS_SEP "io" OS_SEP "mknod.c"},
{"mknodat", "glibc" OS_SEP "io" OS_SEP "mknodat.c"}, {"mknodat", "glibc" OS_SEP "io" OS_SEP "mknodat.c"},
{"pthread_atfork", "glibc" OS_SEP "nptl" OS_SEP "pthread_atfork.c"}, {"pthread_atfork", "glibc" OS_SEP "nptl" OS_SEP "pthread_atfork.c"},
{"warning-nop", "glibc" OS_SEP "debug" OS_SEP "warning-nop.c"},
{"stack_chk_fail_local", "glibc" OS_SEP "debug" OS_SEP "stack_chk_fail_local.c"}, {"stack_chk_fail_local", "glibc" OS_SEP "debug" OS_SEP "stack_chk_fail_local.c"},
}; };
for (size_t i = 0; i < array_length(deps); i += 1) { for (size_t i = 0; i < array_length(deps); i += 1) {
@ -253,6 +252,7 @@ static const char *get_libc_crt_file(CodeGen *parent, const char *file) {
c_file->args.append("-fno-stack-protector"); c_file->args.append("-fno-stack-protector");
c_file->args.append("-fmath-errno"); c_file->args.append("-fmath-errno");
c_file->args.append("-ftls-model=initial-exec"); c_file->args.append("-ftls-model=initial-exec");
c_file->args.append("-Wno-ignored-attributes");
c_file->args.append("-I"); c_file->args.append("-I");
c_file->args.append(path_from_libc(parent, "glibc" OS_SEP "include")); c_file->args.append(path_from_libc(parent, "glibc" OS_SEP "include"));
c_file->args.append("-I"); c_file->args.append("-I");