blob: 1f4496446c74b3cf74e37aba9ec3f833a91e1e0b (
plain) (
blame)
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#! /bin/sh
# Copyright (C) 2016-2019 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/>.
# Check installed headers for cleanliness. For each header, confirm
# that it's possible to compile a file that includes that header and
# does nothing else, in several different compilation modes. Also,
# scan the header for a set of obsolete typedefs that should no longer
# appear.
# These compilation switches assume GCC or compatible, which is probably
# fine since we also assume that when _building_ glibc.
c_modes="-std=c89 -std=gnu89 -std=c11 -std=gnu11"
cxx_modes="-std=c++98 -std=gnu++98 -std=c++11 -std=gnu++11"
# An exhaustive test of feature selection macros would take far too long.
# These are probably the most commonly used three.
lib_modes="-D_DEFAULT_SOURCE=1 -D_GNU_SOURCE=1 -D_XOPEN_SOURCE=700"
# sys/types.h+bits/types.h have to define the obsolete types.
# rpc(svc)/* have the obsolete types too deeply embedded in their API
# to remove.
skip_obsolete_type_check='*/sys/types.h|*/bits/types.h|*/rpc/*|*/rpcsvc/*'
obsolete_type_re=\
'\<((__)?(quad_t|u(short|int|long|_(char|short|int([0-9]+_t)?|long|quad_t))))\>'
if [ $# -lt 3 ]; then
echo "usage: $0 c|c++ \"compile command\" header header header..." >&2
exit 2
fi
case "$1" in
(c)
lang_modes="$c_modes"
cih_test_c=$(mktemp ${TMPDIR-/tmp}/cih_test_XXXXXX.c)
already="$skip_obsolete_type_check"
;;
(c++)
lang_modes="$cxx_modes"
cih_test_c=$(mktemp ${TMPDIR-/tmp}/cih_test_XXXXXX.cc)
# The obsolete-type check can be skipped for C++; it is
# sufficient to do it for C.
already="*"
;;
(*)
echo "usage: $0 c|c++ \"compile command\" header header header..." >&2
exit 2;;
esac
shift
cc_cmd="$1"
shift
trap "rm -f '$cih_test_c'" 0
failed=0
is_x86_64=unknown
is_x32=unknown
for header in "$@"; do
# Skip various headers for which this test gets a false failure.
case "$header" in
# bits/* are not meant to be included directly and usually #error
# out if you try it.
# regexp.h is a stub containing only an #error.
# Sun RPC's .x files are traditionally installed in
# $prefix/include/rpcsvc, but they are not C header files.
(bits/* | regexp.h | rpcsvc/*.x)
continue;;
# All extant versions of sys/elf.h contain nothing more than an
# exhortation (either a #warning or an #error) to use sys/procfs.h
# instead, plus an inclusion of that header.
(sys/elf.h)
continue;;
# Skip Fortran headers.
(finclude/*)
continue;;
# sys/sysctl.h is unsupported for x32.
(sys/sysctl.h)
case "$is_x32" in
(yes) continue;;
(no) ;;
(unknown)
cat >"$cih_test_c" <<EOF
#if defined __x86_64__ && defined __ILP32__
# error "is x32"
#endif
EOF
if $cc_cmd -fsyntax-only "$cih_test_c" > /dev/null 2>&1
then
is_x32=no
else
is_x32=yes
continue
fi
;;
esac
;;
# sys/vm86.h is "unsupported on x86-64" and errors out on that target.
(sys/vm86.h)
case "$is_x86_64" in
(yes) continue;;
(no) ;;
(unknown)
cat >"$cih_test_c" <<EOF
#if defined __x86_64__ && __x86_64__
#error "is x86-64"
#endif
EOF
if $cc_cmd -fsyntax-only "$cih_test_c" > /dev/null 2>&1
then
is_x86_64=no
else
is_x86_64=yes
continue
fi
;;
esac
;;
esac
echo :: "$header"
for lang_mode in "" $lang_modes; do
for lib_mode in "" $lib_modes; do
echo :::: $lang_mode $lib_mode
if [ -z "$lib_mode" ]; then
expanded_lib_mode='/* default library mode */'
else
expanded_lib_mode=$(echo : $lib_mode | \
sed 's/^: -D/#define /; s/=/ /')
fi
cat >"$cih_test_c" <<EOF
/* These macros may have been defined on the command line. They are
inappropriate for this test. */
#undef _LIBC
#undef _GNU_SOURCE
/* The library mode is selected here rather than on the command line to
ensure that this selection wins. */
$expanded_lib_mode
#include <$header>
int avoid_empty_translation_unit;
EOF
if $cc_cmd -fsyntax-only $lang_mode "$cih_test_c" 2>&1
then
includes=$($cc_cmd -fsyntax-only -H $lang_mode \
"$cih_test_c" 2>&1 | sed -ne 's/^[.][.]* //p')
for h in $includes; do
# Don't repeat work.
eval 'case "$h" in ('"$already"') continue;; esac'
if grep -qE "$obsolete_type_re" "$h"; then
echo "*** Obsolete types detected:"
grep -HE "$obsolete_type_re" "$h"
failed=1
fi
already="$already|$h"
done
else
failed=1
fi
done
done
done
exit $failed
|
