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0e65dfba NA |
1 | dnl -*- Autoconf -*- |
2 | dnl Process this file with autoconf to produce a configure script. | |
3 | dnl | |
250d07de | 4 | dnl Copyright (C) 2019-2021 Free Software Foundation, Inc. |
0e65dfba NA |
5 | dnl |
6 | dnl This file is free software; you can redistribute it and/or modify | |
7 | dnl it under the terms of the GNU General Public License as published by | |
8 | dnl the Free Software Foundation; either version 2 of the License, or | |
9 | dnl (at your option) any later version. | |
10 | dnl | |
11 | dnl This program is distributed in the hope that it will be useful, | |
12 | dnl but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | dnl GNU General Public License for more details. | |
15 | dnl | |
16 | dnl You should have received a copy of the GNU General Public License | |
17 | dnl along with this program; see the file COPYING. If not see | |
18 | dnl <http://www.gnu.org/licenses/>. | |
19 | dnl | |
20 | ||
21 | AC_PREREQ(2.64) | |
987cf30a | 22 | AC_INIT([libctf], 1.2.0) |
0e65dfba | 23 | AC_CONFIG_SRCDIR(ctf-impl.h) |
a7c23ac9 | 24 | AC_CONFIG_MACRO_DIR(..) |
0e65dfba | 25 | AC_CONFIG_MACRO_DIR(../config) |
87279e3c | 26 | AC_CONFIG_MACRO_DIR(../bfd) |
93993f67 AM |
27 | AC_CANONICAL_BUILD |
28 | AC_CANONICAL_HOST | |
29 | AC_CANONICAL_TARGET | |
0e65dfba NA |
30 | AC_USE_SYSTEM_EXTENSIONS |
31 | AM_INIT_AUTOMAKE | |
32 | ||
33 | # Checks for programs. | |
34 | AC_PROG_MAKE_SET | |
35 | AC_PROG_CC | |
36 | AC_PROG_RANLIB | |
37 | AM_PROG_AR | |
8e6635bd | 38 | ZW_GNU_GETTEXT_SISTER_DIR |
0e65dfba | 39 | |
87279e3c NA |
40 | dnl Default to a non shared library. This may be overridden by the |
41 | dnl configure option --enable-shared. | |
42 | AC_DISABLE_SHARED | |
43 | ||
44 | LT_INIT | |
0e65dfba NA |
45 | AC_SYS_LARGEFILE |
46 | ||
47 | MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing | |
48 | AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal]) | |
49 | AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf]) | |
50 | AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader]) | |
51 | ||
52 | # Figure out what compiler warnings we can enable. | |
53 | # See config/warnings.m4 for details. | |
54 | ||
55 | ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \ | |
56 | -Wmissing-format-attribute], [warn]) | |
57 | ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \ | |
58 | -Wold-style-definition], [c_warn]) | |
59 | ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long]) | |
60 | ||
61 | # Only enable with --enable-werror-always until existing warnings are | |
62 | # corrected. | |
63 | ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual]) | |
64 | ||
65 | AM_MAINTAINER_MODE | |
87279e3c | 66 | AM_INSTALL_LIBBFD |
0e65dfba NA |
67 | ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags]) |
68 | ||
69 | AC_FUNC_MMAP | |
87279e3c | 70 | # Needed for BFD capability checks. |
9698cf9b | 71 | AC_SEARCH_LIBS(dlopen, dl) |
a0486bac | 72 | AM_ZLIB |
9698cf9b | 73 | |
a9b98702 NA |
74 | GCC_ENABLE([libctf-hash-debugging], [no], [], [Enable expensive debugging of CTF deduplication type hashing]) |
75 | if test "${enable_libctf_hash_debugging}" = yes; then | |
76 | AC_DEFINE(ENABLE_LIBCTF_HASH_DEBUGGING, 1, [Enable expensive debugging of CTF deduplication type hashing]) | |
77 | fi | |
78 | AM_CONDITIONAL(ENABLE_LIBCTF_HASH_DEBUGGING, test "${enable_libctf_hash_debugging}" = yes) | |
79 | ||
9698cf9b NA |
80 | # Similar to GDB_AC_CHECK_BFD. |
81 | OLD_CFLAGS=$CFLAGS | |
82 | OLD_LDFLAGS=$LDFLAGS | |
83 | OLD_LIBS=$LIBS | |
84 | # Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS | |
85 | # points somewhere with bfd, with -I/foo/lib and -L/foo/lib. We | |
86 | # always want our bfd. | |
87 | CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS" | |
88 | ZLIBDIR=`echo $zlibdir | sed 's,\$(top_builddir)/,,g'` | |
89 | LDFLAGS="-L../bfd -L../libiberty $ZLIBDIR $LDFLAGS" | |
90 | intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'` | |
91 | LIBS="-lbfd -liberty -lz $intl $LIBS" | |
92 | AC_CACHE_CHECK([for ELF support in BFD], ac_cv_libctf_bfd_elf, | |
93 | [AC_TRY_LINK([#include <stdlib.h> | |
758f5907 | 94 | #include <string.h> |
9698cf9b NA |
95 | #include "bfd.h" |
96 | #include "elf-bfd.h"], | |
97 | [(void) bfd_section_from_elf_index (NULL, 0); | |
98 | return 0;], | |
99 | [ac_cv_libctf_bfd_elf=yes], | |
100 | [ac_cv_libctf_bfd_elf=no])]) | |
101 | CFLAGS=$OLD_CFLAGS | |
102 | LDFLAGS=$OLD_LDFLAGS | |
103 | LIBS=$OLD_LIBS | |
104 | ||
105 | if test $ac_cv_libctf_bfd_elf = yes; then | |
106 | AC_DEFINE([HAVE_BFD_ELF], 1, | |
107 | [Whether libbfd was configured for an ELF target.]) | |
108 | fi | |
109 | ||
a0486bac JM |
110 | AC_C_BIGENDIAN |
111 | AC_CHECK_HEADERS(byteswap.h endian.h) | |
0e65dfba | 112 | AC_CHECK_FUNCS(pread) |
6b22174f | 113 | |
e755667f NA |
114 | dnl Check for bswap_{16,32,64} |
115 | AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64], [], [], [[#include <byteswap.h>]]) | |
0f0c11f7 | 116 | AC_CHECK_DECLS([asprintf, vasprintf, stpcpy]) |
3a657c60 | 117 | |
6b22174f NA |
118 | dnl Check for qsort_r. (Taken from gnulib.) |
119 | AC_CHECK_FUNCS_ONCE([qsort_r]) | |
120 | if test $ac_cv_func_qsort_r = yes; then | |
121 | AC_CACHE_CHECK([for qsort_r signature], [ac_cv_libctf_qsort_r_signature], | |
122 | [AC_LINK_IFELSE( | |
123 | [AC_LANG_PROGRAM([[#undef qsort_r | |
124 | #include <stdlib.h> | |
125 | void qsort_r (void *, size_t, size_t, | |
126 | int (*) (void const *, void const *, | |
127 | void *), | |
128 | void *); | |
129 | void (*p) (void *, size_t, size_t, | |
130 | int (*) (void const *, void const *, | |
131 | void *), | |
132 | void *) = qsort_r; | |
133 | ]])], | |
134 | [ac_cv_libctf_qsort_r_signature=GNU], | |
135 | [AC_LINK_IFELSE( | |
136 | [AC_LANG_PROGRAM([[#undef qsort_r | |
137 | #include <stdlib.h> | |
138 | void qsort_r (void *, size_t, size_t, void *, | |
139 | int (*) (void *, | |
140 | void const *, | |
141 | void const *)); | |
142 | void (*p) (void *, size_t, size_t, void *, | |
143 | int (*) (void *, void const *, | |
144 | void const *)) = qsort_r; | |
145 | ]])], | |
146 | [ac_cv_libctf_qsort_r_signature=BSD], | |
147 | [ac_cv_libctf_qsort_r_signature=unknown])])]) | |
148 | fi | |
149 | ||
150 | case x$ac_cv_libctf_qsort_r_signature in | |
151 | xGNU) AC_DEFINE([HAVE_QSORT_R_ARG_LAST], 1, | |
152 | [Whether a qsort_r exists with a void *arg as its last arg.]);; | |
153 | xBSD) AC_DEFINE([HAVE_QSORT_R_COMPAR_LAST], 1, | |
154 | [Whether a qsort_r exists with the compar function as its last arg.]);; | |
155 | *) ac_cv_libctf_qsort_r_signature=unknown;; | |
156 | esac | |
157 | ||
158 | AM_CONDITIONAL(NEED_CTF_QSORT_R, test "${ac_cv_libctf_qsort_r_signature}" = unknown) | |
0e65dfba | 159 | |
ad118caa NA |
160 | AC_CACHE_CHECK([for O_CLOEXEC], [ac_cv_libctf_macro_O_CLOEXEC], |
161 | [AC_LINK_IFELSE( | |
162 | [AC_LANG_PROGRAM([[#include <fcntl.h> | |
163 | #ifndef O_CLOEXEC | |
164 | choke me; | |
165 | #endif | |
166 | ]], | |
167 | [[return O_CLOEXEC;]])], | |
168 | [ac_cv_libctf_macro_O_CLOEXEC=yes], | |
169 | [ac_cv_libctf_macro_O_CLOEXEC=no])]) | |
170 | ||
171 | if test $ac_cv_libctf_macro_O_CLOEXEC = yes; then | |
172 | AC_DEFINE([HAVE_O_CLOEXEC], 1, | |
173 | [Whether the platform has a definition of O_CLOEXEC.]) | |
174 | fi | |
175 | ||
1038406a | 176 | CTF_LIBADD="-L`pwd`/../libiberty -liberty" |
87279e3c | 177 | SHARED_LDFLAGS= |
95148614 NA |
178 | |
179 | # Horrible hacks to build DLLs on Windows and a shared library elsewhere. | |
87279e3c NA |
180 | if test "$enable_shared" = "yes"; then |
181 | # When building a shared libctf, link against the pic version of libiberty | |
182 | # so that apps that use libctf won't need libiberty just to satisfy any | |
95148614 NA |
183 | # libctf references. We can't do that if a pic libiberty is unavailable |
184 | # since including non-pic # code would insert text relocations into libctf. | |
87279e3c NA |
185 | # Note that linking against libbfd as we do here, which is itself linked |
186 | # against libiberty, may not satisfy all the libctf libiberty references | |
187 | # since libbfd may not pull in the entirety of libiberty. | |
95148614 NA |
188 | # Also, jam libintl into the right place in all of this: after libiberty, |
189 | # which uses it, but before -lcygwin, which it uses. | |
87279e3c NA |
190 | changequote(,)dnl |
191 | x=`sed -n -e 's/^[ ]*PICFLAG[ ]*=[ ]*//p' < ../libiberty/Makefile | sed -n '$p'` | |
192 | changequote([,])dnl | |
193 | if test -n "$x"; then | |
1038406a | 194 | CTF_LIBADD="-L`pwd`/../libiberty/pic -liberty" |
87279e3c | 195 | fi |
95148614 NA |
196 | fi |
197 | ||
198 | CTF_LIBADD="$CTF_LIBADD $LIBINTL" | |
87279e3c | 199 | |
95148614 | 200 | if test "$enable_shared" = "yes"; then |
87279e3c NA |
201 | case "${host}" in |
202 | # More hacks to build DLLs on Windows. | |
203 | *-*-cygwin*) | |
204 | SHARED_LDFLAGS="-no-undefined" | |
95148614 | 205 | CTF_LIBADD="$CTF_LIBADD -lcygwin" |
87279e3c NA |
206 | ;; |
207 | esac | |
208 | fi | |
209 | AC_SUBST(SHARED_LDFLAGS) | |
1038406a | 210 | AC_SUBST(CTF_LIBADD) |
87279e3c | 211 | |
cbd8f5bb NA |
212 | AC_PATH_PROG([EXPECT], [expect]) |
213 | AC_CACHE_CHECK([for Tcl supporting try/catch], [ac_cv_libctf_tcl_try], | |
214 | [ac_cv_libctf_tcl_try=`if test -z $EXPECT; then echo no; else $EXPECT << EOF | |
215 | if @<:@llength @<:@info commands try@:>@@:>@ then { puts yes } else { puts no } | |
216 | EOF | |
217 | fi` | |
218 | ]) | |
219 | AM_CONDITIONAL(TCL_TRY, test "${ac_cv_libctf_tcl_try}" = yes) | |
220 | ||
87279e3c NA |
221 | # Use a version script, if possible, or an -export-symbols-regex otherwise. |
222 | VERSION_FLAGS='-export-symbols-regex ctf_.*' | |
223 | if $LD --help 2>&1 | grep -- --version-script >/dev/null; then | |
224 | VERSION_FLAGS="-Wl,--version-script='$srcdir/libctf.ver'" | |
225 | fi | |
226 | AC_SUBST(VERSION_FLAGS) | |
227 | ||
0e65dfba NA |
228 | AC_CONFIG_FILES(Makefile) |
229 | AC_CONFIG_HEADERS(config.h) | |
230 | AC_OUTPUT | |
d546b610 L |
231 | |
232 | GNU_MAKE_JOBSERVER |