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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
dnl -*- Autoconf -*-
dnl Process this file with autoconf to produce a configure script.
dnl
dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
dnl
dnl This file is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; see the file COPYING. If not see
dnl <http://www.gnu.org/licenses/>.
dnl
AC_PREREQ(2.64)
AC_INIT([libctf], 1.2.0)
AC_CONFIG_SRCDIR(ctf-impl.h)
AC_CONFIG_MACRO_DIR(..)
AC_CONFIG_MACRO_DIR(../config)
AC_CONFIG_MACRO_DIR(../bfd)
AC_USE_SYSTEM_EXTENSIONS
AM_INIT_AUTOMAKE
# Checks for programs.
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_RANLIB
AM_PROG_AR
ZW_GNU_GETTEXT_SISTER_DIR
dnl Default to a non shared library. This may be overridden by the
dnl configure option --enable-shared.
AC_DISABLE_SHARED
LT_INIT
AC_SYS_LARGEFILE
MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
# Figure out what compiler warnings we can enable.
# See config/warnings.m4 for details.
ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
-Wmissing-format-attribute], [warn])
ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
-Wold-style-definition], [c_warn])
ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
# Only enable with --enable-werror-always until existing warnings are
# corrected.
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
AM_MAINTAINER_MODE
AM_INSTALL_LIBBFD
ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags])
AC_FUNC_MMAP
# Needed for BFD capability checks.
AC_SEARCH_LIBS(dlopen, dl)
AM_ZLIB
GCC_ENABLE([libctf-hash-debugging], [no], [], [Enable expensive debugging of CTF deduplication type hashing])
if test "${enable_libctf_hash_debugging}" = yes; then
AC_DEFINE(ENABLE_LIBCTF_HASH_DEBUGGING, 1, [Enable expensive debugging of CTF deduplication type hashing])
fi
AM_CONDITIONAL(ENABLE_LIBCTF_HASH_DEBUGGING, test "${enable_libctf_hash_debugging}" = yes)
# Similar to GDB_AC_CHECK_BFD.
OLD_CFLAGS=$CFLAGS
OLD_LDFLAGS=$LDFLAGS
OLD_LIBS=$LIBS
# Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS
# points somewhere with bfd, with -I/foo/lib and -L/foo/lib. We
# always want our bfd.
CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS"
ZLIBDIR=`echo $zlibdir | sed 's,\$(top_builddir)/,,g'`
LDFLAGS="-L../bfd -L../libiberty $ZLIBDIR $LDFLAGS"
intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'`
LIBS="-lbfd -liberty -lz $intl $LIBS"
AC_CACHE_CHECK([for ELF support in BFD], ac_cv_libctf_bfd_elf,
[AC_TRY_LINK([#include <stdlib.h>
#include "bfd.h"
#include "elf-bfd.h"],
[(void) bfd_section_from_elf_index (NULL, 0);
return 0;],
[ac_cv_libctf_bfd_elf=yes],
[ac_cv_libctf_bfd_elf=no])])
CFLAGS=$OLD_CFLAGS
LDFLAGS=$OLD_LDFLAGS
LIBS=$OLD_LIBS
if test $ac_cv_libctf_bfd_elf = yes; then
AC_DEFINE([HAVE_BFD_ELF], 1,
[Whether libbfd was configured for an ELF target.])
fi
AC_C_BIGENDIAN
AC_CHECK_HEADERS(byteswap.h endian.h)
AC_CHECK_FUNCS(pread)
dnl Check for bswap_{16,32,64}
AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64], [], [], [[#include <byteswap.h>]])
AC_CHECK_DECLS([asprintf, vasprintf, stpcpy])
dnl Check for qsort_r. (Taken from gnulib.)
AC_CHECK_FUNCS_ONCE([qsort_r])
if test $ac_cv_func_qsort_r = yes; then
AC_CACHE_CHECK([for qsort_r signature], [ac_cv_libctf_qsort_r_signature],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#undef qsort_r
#include <stdlib.h>
void qsort_r (void *, size_t, size_t,
int (*) (void const *, void const *,
void *),
void *);
void (*p) (void *, size_t, size_t,
int (*) (void const *, void const *,
void *),
void *) = qsort_r;
]])],
[ac_cv_libctf_qsort_r_signature=GNU],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#undef qsort_r
#include <stdlib.h>
void qsort_r (void *, size_t, size_t, void *,
int (*) (void *,
void const *,
void const *));
void (*p) (void *, size_t, size_t, void *,
int (*) (void *, void const *,
void const *)) = qsort_r;
]])],
[ac_cv_libctf_qsort_r_signature=BSD],
[ac_cv_libctf_qsort_r_signature=unknown])])])
fi
case x$ac_cv_libctf_qsort_r_signature in
xGNU) AC_DEFINE([HAVE_QSORT_R_ARG_LAST], 1,
[Whether a qsort_r exists with a void *arg as its last arg.]);;
xBSD) AC_DEFINE([HAVE_QSORT_R_COMPAR_LAST], 1,
[Whether a qsort_r exists with the compar function as its last arg.]);;
*) ac_cv_libctf_qsort_r_signature=unknown;;
esac
AM_CONDITIONAL(NEED_CTF_QSORT_R, test "${ac_cv_libctf_qsort_r_signature}" = unknown)
AC_CACHE_CHECK([for O_CLOEXEC], [ac_cv_libctf_macro_O_CLOEXEC],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <fcntl.h>
#ifndef O_CLOEXEC
choke me;
#endif
]],
[[return O_CLOEXEC;]])],
[ac_cv_libctf_macro_O_CLOEXEC=yes],
[ac_cv_libctf_macro_O_CLOEXEC=no])])
if test $ac_cv_libctf_macro_O_CLOEXEC = yes; then
AC_DEFINE([HAVE_O_CLOEXEC], 1,
[Whether the platform has a definition of O_CLOEXEC.])
fi
# Horrible hacks to build DLLs on Windows and a shared library elsewhere.
SHARED_LIBADD=
SHARED_LDFLAGS=
BFD_LIBADD=
BFD_DEPENDENCIES=
if test "$enable_shared" = "yes"; then
# When building a shared libctf, link against the pic version of libiberty
# so that apps that use libctf won't need libiberty just to satisfy any
# libctf references.
# We can't do that if a pic libiberty is unavailable since including non-pic
# code would insert text relocations into libctf.
# Note that linking against libbfd as we do here, which is itself linked
# against libiberty, may not satisfy all the libctf libiberty references
# since libbfd may not pull in the entirety of libiberty.
changequote(,)dnl
x=`sed -n -e 's/^[ ]*PICFLAG[ ]*=[ ]*//p' < ../libiberty/Makefile | sed -n '$p'`
changequote([,])dnl
if test -n "$x"; then
SHARED_LIBADD="-L`pwd`/../libiberty/pic -liberty"
fi
case "${host}" in
# More hacks to build DLLs on Windows.
*-*-cygwin*)
SHARED_LDFLAGS="-no-undefined"
SHARED_LIBADD="-L`pwd`/../libiberty -liberty -L`pwd`/../intl -lintl -lcygwin"
BFD_LIBADD="-L`pwd`/../bfd -lbfd"
;;
*-*-darwin*)
BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.dylib"
BFD_DEPENDENCIES="../bfd/libbfd.la"
;;
*)
case "$host_vendor" in
hp)
BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.sl"
;;
*)
BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.so"
;;
esac
BFD_DEPENDENCIES="../bfd/libbfd.la"
;;
esac
fi
AC_SUBST(SHARED_LDFLAGS)
AC_SUBST(SHARED_LIBADD)
AC_SUBST(BFD_LIBADD)
AC_SUBST(BFD_DEPENDENCIES)
# Use a version script, if possible, or an -export-symbols-regex otherwise.
VERSION_FLAGS='-export-symbols-regex ctf_.*'
if $LD --help 2>&1 | grep -- --version-script >/dev/null; then
VERSION_FLAGS="-Wl,--version-script='$srcdir/libctf.ver'"
fi
AC_SUBST(VERSION_FLAGS)
AC_CONFIG_FILES(Makefile)
AC_CONFIG_HEADERS(config.h)
AC_OUTPUT
|
