configure.ac revision 1.1
1 dnl -*- Autoconf -*- 2 dnl Process this file with autoconf to produce a configure script. 3 dnl 4 dnl Copyright (C) 2019-2020 Free Software Foundation, Inc. 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) 22 AC_INIT([libctf], 1.2.0) 23 AC_CONFIG_SRCDIR(ctf-impl.h) 24 AC_CONFIG_MACRO_DIR(../config) 25 AC_CONFIG_MACRO_DIR(../bfd) 26 AC_USE_SYSTEM_EXTENSIONS 27 AM_INIT_AUTOMAKE 28 29 # Checks for programs. 30 AC_PROG_MAKE_SET 31 AC_PROG_CC 32 AC_PROG_RANLIB 33 AM_PROG_AR 34 ZW_GNU_GETTEXT_SISTER_DIR 35 36 dnl Default to a non shared library. This may be overridden by the 37 dnl configure option --enable-shared. 38 AC_DISABLE_SHARED 39 40 LT_INIT 41 AC_SYS_LARGEFILE 42 43 MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing 44 AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal]) 45 AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf]) 46 AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader]) 47 48 # Figure out what compiler warnings we can enable. 49 # See config/warnings.m4 for details. 50 51 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \ 52 -Wmissing-format-attribute], [warn]) 53 ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \ 54 -Wold-style-definition], [c_warn]) 55 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long]) 56 57 # Only enable with --enable-werror-always until existing warnings are 58 # corrected. 59 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual]) 60 61 AM_MAINTAINER_MODE 62 AM_INSTALL_LIBBFD 63 ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags]) 64 65 AC_FUNC_MMAP 66 # Needed for BFD capability checks. 67 AC_SEARCH_LIBS(dlopen, dl) 68 AM_ZLIB 69 70 GCC_ENABLE([libctf-hash-debugging], [no], [], [Enable expensive debugging of CTF deduplication type hashing]) 71 if test "${enable_libctf_hash_debugging}" = yes; then 72 AC_DEFINE(ENABLE_LIBCTF_HASH_DEBUGGING, 1, [Enable expensive debugging of CTF deduplication type hashing]) 73 fi 74 AM_CONDITIONAL(ENABLE_LIBCTF_HASH_DEBUGGING, test "${enable_libctf_hash_debugging}" = yes) 75 76 # Similar to GDB_AC_CHECK_BFD. 77 OLD_CFLAGS=$CFLAGS 78 OLD_LDFLAGS=$LDFLAGS 79 OLD_LIBS=$LIBS 80 # Put the old CFLAGS/LDFLAGS last, in case the user's (C|LD)FLAGS 81 # points somewhere with bfd, with -I/foo/lib and -L/foo/lib. We 82 # always want our bfd. 83 CFLAGS="-I${srcdir}/../include -I../bfd -I${srcdir}/../bfd $CFLAGS" 84 ZLIBDIR=`echo $zlibdir | sed 's,\$(top_builddir)/,,g'` 85 LDFLAGS="-L../bfd -L../libiberty $ZLIBDIR $LDFLAGS" 86 intl=`echo $LIBINTL | sed 's,${top_builddir}/,,g'` 87 LIBS="-lbfd -liberty -lz $intl $LIBS" 88 AC_CACHE_CHECK([for ELF support in BFD], ac_cv_libctf_bfd_elf, 89 [AC_TRY_LINK([#include <stdlib.h> 90 #include "bfd.h" 91 #include "elf-bfd.h"], 92 [(void) bfd_section_from_elf_index (NULL, 0); 93 return 0;], 94 [ac_cv_libctf_bfd_elf=yes], 95 [ac_cv_libctf_bfd_elf=no])]) 96 CFLAGS=$OLD_CFLAGS 97 LDFLAGS=$OLD_LDFLAGS 98 LIBS=$OLD_LIBS 99 100 if test $ac_cv_libctf_bfd_elf = yes; then 101 AC_DEFINE([HAVE_BFD_ELF], 1, 102 [Whether libbfd was configured for an ELF target.]) 103 fi 104 105 AC_C_BIGENDIAN 106 AC_CHECK_HEADERS(byteswap.h endian.h) 107 AC_CHECK_FUNCS(pread) 108 109 dnl Check for bswap_{16,32,64} 110 AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64], [], [], [[#include <byteswap.h>]]) 111 AC_CHECK_DECLS([asprintf, vasprintf, stpcpy]) 112 113 dnl Check for qsort_r. (Taken from gnulib.) 114 AC_CHECK_FUNCS_ONCE([qsort_r]) 115 if test $ac_cv_func_qsort_r = yes; then 116 AC_CACHE_CHECK([for qsort_r signature], [ac_cv_libctf_qsort_r_signature], 117 [AC_LINK_IFELSE( 118 [AC_LANG_PROGRAM([[#undef qsort_r 119 #include <stdlib.h> 120 void qsort_r (void *, size_t, size_t, 121 int (*) (void const *, void const *, 122 void *), 123 void *); 124 void (*p) (void *, size_t, size_t, 125 int (*) (void const *, void const *, 126 void *), 127 void *) = qsort_r; 128 ]])], 129 [ac_cv_libctf_qsort_r_signature=GNU], 130 [AC_LINK_IFELSE( 131 [AC_LANG_PROGRAM([[#undef qsort_r 132 #include <stdlib.h> 133 void qsort_r (void *, size_t, size_t, void *, 134 int (*) (void *, 135 void const *, 136 void const *)); 137 void (*p) (void *, size_t, size_t, void *, 138 int (*) (void *, void const *, 139 void const *)) = qsort_r; 140 ]])], 141 [ac_cv_libctf_qsort_r_signature=BSD], 142 [ac_cv_libctf_qsort_r_signature=unknown])])]) 143 fi 144 145 case x$ac_cv_libctf_qsort_r_signature in 146 xGNU) AC_DEFINE([HAVE_QSORT_R_ARG_LAST], 1, 147 [Whether a qsort_r exists with a void *arg as its last arg.]);; 148 xBSD) AC_DEFINE([HAVE_QSORT_R_COMPAR_LAST], 1, 149 [Whether a qsort_r exists with the compar function as its last arg.]);; 150 *) ac_cv_libctf_qsort_r_signature=unknown;; 151 esac 152 153 AM_CONDITIONAL(NEED_CTF_QSORT_R, test "${ac_cv_libctf_qsort_r_signature}" = unknown) 154 155 AC_CACHE_CHECK([for O_CLOEXEC], [ac_cv_libctf_macro_O_CLOEXEC], 156 [AC_LINK_IFELSE( 157 [AC_LANG_PROGRAM([[#include <fcntl.h> 158 #ifndef O_CLOEXEC 159 choke me; 160 #endif 161 ]], 162 [[return O_CLOEXEC;]])], 163 [ac_cv_libctf_macro_O_CLOEXEC=yes], 164 [ac_cv_libctf_macro_O_CLOEXEC=no])]) 165 166 if test $ac_cv_libctf_macro_O_CLOEXEC = yes; then 167 AC_DEFINE([HAVE_O_CLOEXEC], 1, 168 [Whether the platform has a definition of O_CLOEXEC.]) 169 fi 170 171 # Horrible hacks to build DLLs on Windows and a shared library elsewhere. 172 SHARED_LIBADD= 173 SHARED_LDFLAGS= 174 BFD_LIBADD= 175 BFD_DEPENDENCIES= 176 if test "$enable_shared" = "yes"; then 177 # When building a shared libctf, link against the pic version of libiberty 178 # so that apps that use libctf won't need libiberty just to satisfy any 179 # libctf references. 180 # We can't do that if a pic libiberty is unavailable since including non-pic 181 # code would insert text relocations into libctf. 182 # Note that linking against libbfd as we do here, which is itself linked 183 # against libiberty, may not satisfy all the libctf libiberty references 184 # since libbfd may not pull in the entirety of libiberty. 185 changequote(,)dnl 186 x=`sed -n -e 's/^[ ]*PICFLAG[ ]*=[ ]*//p' < ../libiberty/Makefile | sed -n '$p'` 187 changequote([,])dnl 188 if test -n "$x"; then 189 SHARED_LIBADD="-L`pwd`/../libiberty/pic -liberty" 190 fi 191 192 case "${host}" in 193 # More hacks to build DLLs on Windows. 194 *-*-cygwin*) 195 SHARED_LDFLAGS="-no-undefined" 196 SHARED_LIBADD="-L`pwd`/../libiberty -liberty -L`pwd`/../intl -lintl -lcygwin" 197 BFD_LIBADD="-L`pwd`/../bfd -lbfd" 198 ;; 199 200 *-*-darwin*) 201 BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.dylib" 202 BFD_DEPENDENCIES="../bfd/libbfd.la" 203 ;; 204 *) 205 case "$host_vendor" in 206 hp) 207 BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.sl" 208 ;; 209 *) 210 BFD_LIBADD="-Wl,`pwd`/../bfd/.libs/libbfd.so" 211 ;; 212 esac 213 BFD_DEPENDENCIES="../bfd/libbfd.la" 214 ;; 215 esac 216 fi 217 AC_SUBST(SHARED_LDFLAGS) 218 AC_SUBST(SHARED_LIBADD) 219 AC_SUBST(BFD_LIBADD) 220 AC_SUBST(BFD_DEPENDENCIES) 221 222 # Use a version script, if possible, or an -export-symbols-regex otherwise. 223 VERSION_FLAGS='-export-symbols-regex ctf_.*' 224 if $LD --help 2>&1 | grep -- --version-script >/dev/null; then 225 VERSION_FLAGS="-Wl,--version-script='$srcdir/libctf.ver'" 226 fi 227 AC_SUBST(VERSION_FLAGS) 228 229 AC_CONFIG_FILES(Makefile) 230 AC_CONFIG_HEADERS(config.h) 231 AC_OUTPUT 232
Indexes created Fri Aug 07 00:26:27 UTC 2026