1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
sinclude(./aclocal.m4)dnl Autoconf lossage
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/unix/sysv/linux.
# On Linux, the default is to use libio instead of stdio.
test $stdio = default && stdio=libio
# Don't bother trying to generate any glue code to be compatible with the
# existing system library, because we are the only system library.
inhibit_glue=yes
define([LIBC_LINUX_VERSION],[2.0.10])dnl
if test -n "$sysheaders"; then
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $SYSINCLUDES"
fi
define([libc_cv_linuxVER], [libc_cv_linux]patsubst(LIBC_LINUX_VERSION,[\.]))dnl
AC_CACHE_CHECK(installed Linux kernel header files, libc_cv_linuxVER, [dnl
AC_TRY_COMPILE([#include <linux/version.h>],
[#if LINUX_VERSION_CODE < ]dnl
patsubst(LIBC_LINUX_VERSION,[^\([^.]*\)\.\([^.]*\)\.\([^.]*\)$],dnl
[ (\1 *65536+ \2 *256+ \3) /* \1.\2.\3 */])[
eat flaming death
#endif],
libc_cv_linuxVER='LIBC_LINUX_VERSION or later',
libc_cv_linuxVER='TOO OLD!')])
if test "$libc_cv_linuxVER" != 'LIBC_LINUX_VERSION or later'; then
AC_MSG_ERROR([GNU libc requires kernel header files from
Linux LIBC_LINUX_VERSION or later to be installed before configuring.
The kernel header files are found usually in /usr/include/asm and
/usr/include/linux; make sure these directories use files from
Linux LIBC_LINUX_VERSION or later. This check uses <linux/version.h>, so
make sure that file was built correctly when installing the kernel header
files. To use kernel headers not from /usr/include/linux, use the
configure option --with-headers.])
fi
if test -n "$sysheaders"; then
CFLAGS=$OLD_CFLAGS
fi
# The Linux filesystem standard prescribes where to place "essential"
# files. I.e., when the installation prefix is "/usr" we have to place
# shared library objects and the configuration files on the root partition
# in /lib and /etc.
if test "$prefix" = "/usr"; then
libc_cv_slibdir="/lib"
libc_cv_sysconfdir="/etc"
libc_cv_rootsbindir="/sbin"
fi
# Under Linux the LinuxThreads and crypt add-on should be available.
case $add_ons in
# Both are available. Good.
*linuxthreads*crypt* | *crypt*linuxthreads*)
message=
;;
*linuxthreads*)
message="\
*** WARNING:
*** Are you sure you do not want to use the \`crypt' add-on?"
;;
*crypt*)
message="\
*** WARNING:
*** Are you sure you do not want to use the \`linuxthread' add-on?"
;;
*)
message="\
*** WARNING: Are you sure you do not want to use the \`linuxthreads'
*** and \`crypt' add-ons?"
;;
esac
if test "$message"; then
if test $enable_sanity = yes; then
echo "\
*** You should not compile the GNU libc without the \`linuxthreads' and
*** \`crypt' add-on. Not using them risks to be incompatible with the
*** libraries of other systems. Consider getting the add-ons and restart
*** the configuration.
*** If you really mean to avoid those add-ons run configure again, now
*** using the extra parameter \`--disable-sanity-checks'."
exit 1
else
echo "$message"
fi
fi
# Check whether `ldconfig' sources are available. This will go away as soon
# as ldconfig is available in GNU libc.
if test -f $srcdir/elf/ldconfig.c; then
has_ldconfig=yes
fi
# We need some extensions to the `ldd' script.
changequote(,)
case "$machine" in
i[3456]86* | m68* | sparc/sparc32)
ldd_rewrite_script=../sysdeps/unix/sysv/linux/ldd-rewrite.sed
;;
*)
;;
esac
changequote([,])
if test $host = $build; then
# If $prefix/include/{net,scsi} are symlinks, make install will
# clobber what they're linked to (probably a kernel tree).
# test -L ought to work on all Linux boxes.
if test "x$prefix" != xNONE; then
ac_prefix=$prefix
else
ac_prefix=$ac_default_prefix
fi
AC_MSG_CHECKING([for symlinks in ${ac_prefix}/include])
ac_message=
if test -L ${ac_prefix}/include/net; then
ac_message="$ac_message
${ac_prefix}/include/net is a symlink"
fi
if test -L ${ac_prefix}/include/scsi; then
ac_message="$ac_message
${ac_prefix}/include/scsi is a symlink"
fi
if test -n "$ac_message"; then
AC_MSG_ERROR([$ac_message
\`make install' will destroy the target of the link(s).
Delete the links and re-run configure, or better still, move the entire
${ac_prefix}/include directory out of the way.])
else
AC_MSG_RESULT(ok)
fi
fi
|
