1 dnl Process this file with autoconf to produce a configure script.
2 dnl Configure input file for elfutils. -*-autoconf-*-
4 dnl Copyright (C) 1996-2015 Red Hat, Inc.
6 dnl This file is part of elfutils.
8 dnl This file is free software; you can redistribute it and/or modify
9 dnl it under the terms of the GNU General Public License as published by
10 dnl the Free Software Foundation; either version 3 of the License, or
11 dnl (at your option) any later version.
13 dnl elfutils is distributed in the hope that it will be useful, but
14 dnl WITHOUT ANY WARRANTY; without even the implied warranty of
15 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 dnl GNU General Public License for more details.
18 dnl You should have received a copy of the GNU General Public License
19 dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
20 AC_INIT([elfutils],[0.161],[https://bugzilla.redhat.com/],[elfutils])
22 AC_CONFIG_AUX_DIR([config])
23 AC_CONFIG_FILES([config/Makefile])
25 AC_COPYRIGHT([Copyright (C) 1996-2015 Red Hat, Inc.])
26 AC_PREREQ(2.63) dnl Minimum Autoconf version required.
28 dnl We use GNU make extensions; automake 1.10 defaults to -Wportability.
29 AM_INIT_AUTOMAKE([gnits 1.11 -Wno-portability dist-bzip2 no-dist-gzip parallel-tests])
32 dnl Unique ID for this build.
33 MODVERSION="Build on $(hostname) $(date +%FT%R:%S%z)"
34 AC_SUBST([MODVERSION])
35 AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
36 AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
38 AC_CONFIG_SRCDIR([libelf/libelf.h])
39 AC_CONFIG_FILES([Makefile])
40 AC_CONFIG_HEADERS([config.h])
42 AC_CONFIG_MACRO_DIR([m4])
43 AC_CONFIG_FILES([m4/Makefile])
45 dnl The RPM spec file. We substitute a few values in the file.
46 AC_CONFIG_FILES([elfutils.spec:config/elfutils.spec.in])
51 AC_ARG_ENABLE(deterministic-archives,
52 [AS_HELP_STRING([--enable-deterministic-archives],
53 [ar and ranlib default to -D behavior])], [
54 if test "${enableval}" = no; then
55 default_ar_deterministic=false
57 default_ar_deterministic=true
58 fi], [default_ar_deterministic=false])
59 AC_DEFINE_UNQUOTED(DEFAULT_AR_DETERMINISTIC, $default_ar_deterministic,
60 [Should ar and ranlib use -D behavior by default?])
62 AC_ARG_ENABLE([thread-safety],
63 AS_HELP_STRING([--enable-thread-safety],
64 [enable thread safety of libraries EXPERIMENTAL]),
65 use_locks=$enableval, use_locks=no)
66 AM_CONDITIONAL(USE_LOCKS, test "$use_locks" = yes)
67 AS_IF([test "$use_locks" = yes], [AC_DEFINE(USE_LOCKS)])
68 AS_IF([test "$use_locks" = yes],
69 [AC_MSG_WARN([thread-safety is EXPERIMENTAL tests might fail.])])
71 AH_TEMPLATE([USE_LOCKS], [Defined if libraries should be thread-safe.])
77 # Only available since automake 1.12
78 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
79 AC_CHECK_TOOL([READELF], [readelf])
80 AC_CHECK_TOOL([NM], [nm])
82 # We use -std=gnu99 but have explicit checks for some language constructs
83 # and GNU extensions since some compilers claim GNU99 support, but don't
84 # really support all language extensions. In particular we need
85 # Mixed Declarations and Code
86 # https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
88 # https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
89 # Arrays of Variable Length
90 # https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
91 AC_CACHE_CHECK([for gcc with GNU99 support], ac_cv_c99, [dnl
93 CFLAGS="$CFLAGS -std=gnu99"
94 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
97 for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
100 double bar (double a, double b)
102 double square (double z) { return z * z; }
103 return square (a) + square (b);
108 struct S { int x[[n]]; };
110 ac_cv_c99=yes, ac_cv_c99=no)
111 CFLAGS="$old_CFLAGS"])
112 AS_IF([test "x$ac_cv_c99" != xyes],
113 AC_MSG_ERROR([gcc with GNU99 support required]))
115 AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl
116 # Use the same flags that we use for our DSOs, so the test is representative.
117 # Some old compiler/linker/libc combinations fail some ways and not others.
118 save_CFLAGS="$CFLAGS"
119 save_LDFLAGS="$LDFLAGS"
120 CFLAGS="-fpic $CFLAGS"
121 LDFLAGS="-shared -Wl,-z,defs,-z,relro $LDFLAGS"
123 AC_LANG_PROGRAM([[#include <stdlib.h>
125 static __thread int a; int foo (int b) { return a + b; }]],
126 [[exit (foo (0));]])],
127 ac_cv_tls=yes, ac_cv_tls=no)
128 CFLAGS="$save_CFLAGS"
129 LDFLAGS="$save_LDFLAGS"])
130 AS_IF([test "x$ac_cv_tls" != xyes],
131 AC_MSG_ERROR([__thread support required]))
133 dnl This test must come as early as possible after the compiler configuration
134 dnl tests, because the choice of the file model can (in principle) affect
135 dnl whether functions and headers are available, whether they work, etc.
138 dnl Enable the linker to be build as a native-only linker. By default it
139 dnl can handle all architectures but this comes at a cost. A native
140 dnl will be slightly faster, small, and has fewer dependencies.
142 AC_ARG_ENABLE([generic],
143 AS_HELP_STRING([--disable-generic], [do not build generic linker]), [dnl
144 if test "$enable_generic" = no; then
147 AC_DEFINE(NATIVE_ELF, 32)
152 AC_MSG_ERROR([no machine-specific linker for this configuration available])
156 AH_TEMPLATE([NATIVE_ELF],
157 [Define to 32 or 64 if a specific implementation is wanted.])
158 AM_CONDITIONAL(NATIVE_LD, test "$native_ld" = yes)
159 dnl The automake generated Makefile cannot deal with macros in the name
160 dnl of files if at any time there is no such file, even if the filename
161 dnl would not be used.
162 AS_IF([test -z "$base_cpu"], [base_cpu=none])
164 dnl Support to work around automake's inflexible dependency generation.
165 dnl See src/Makefile.am for more information.
166 AM_CONDITIONAL(NEVER, false)
168 dnl enable debugging of branch prediction.
169 AC_ARG_ENABLE([debugpred],
170 AS_HELP_STRING([--enable-debugpred],[build binaries with support to debug branch prediction]),
171 [use_debugpred=$enableval], [use_debugpred=no])
172 case $use_debugpred in
173 yes) use_debugpred_val=1 ;;
174 *) use_debugpred_val=0 ;;
176 AC_SUBST([DEBUGPRED], $use_debugpred_val)
178 dnl Enable gprof suport.
179 AC_ARG_ENABLE([gprof],
180 AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=$enableval], [use_gprof=no])
181 if test "$use_gprof" = yes; then
183 LDFLAGS="$LDFLAGS -pg"
185 AM_CONDITIONAL(GPROF, test "$use_gprof" = yes)
187 # Enable gcov suport.
188 AC_ARG_ENABLE([gcov],
189 AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=$enableval], [use_gcov=no])
190 if test "$use_gcov" = yes; then
191 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
192 LDFLAGS="$LDFLAGS -fprofile-arcs"
194 AM_CONDITIONAL(GCOV, test "$use_gcov" = yes)
196 AC_ARG_ENABLE([sanitize-undefined],
197 AS_HELP_STRING([--enable-sanitize-undefined],
198 [Use gcc undefined behaviour sanitizer]),
199 [use_undefined=$enableval], [use_undefined=no])
200 if test "$use_undefined" = yes; then
202 old_CXXFLAGS="$CXXFLAGS"
203 # We explicitly use unaligned access when possible (see ALLOW_UNALIGNED)
204 # We want to fail immediately on first error, don't try to recover.
205 CFLAGS="$CFLAGS -fsanitize=undefined -fno-sanitize=alignment -fno-sanitize-recover"
206 CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize=alignment -fno-sanitize-recover"
207 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], use_undefined=yes, use_undefined=no)
208 AS_IF([test "x$use_undefined" != xyes],
209 AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
210 CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
213 AC_ARG_ENABLE([valgrind],
214 AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
215 [use_valgrind=$enableval], [use_valgrind=no])
216 if test "$use_valgrind" = yes; then
217 AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
218 if test "$HAVE_VALGRIND" = "no"; then
219 AC_MSG_ERROR([valgrind not found])
222 AM_CONDITIONAL(USE_VALGRIND, test "$use_valgrind" = yes)
224 AM_CONDITIONAL(BUILD_STATIC, [dnl
225 test "$use_gprof" = yes -o "$use_gcov" = yes])
227 AC_ARG_ENABLE([tests-rpath],
228 AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
229 [tests_use_rpath=$enableval], [tests_use_rpath=no])
230 AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
232 LIBEBL_SUBDIR="$PACKAGE"
233 AC_ARG_ENABLE([libebl-subdir],
234 AS_HELP_STRING([--enable-libebl-subdir=DIR],
235 [install libebl_CPU modules in $(libdir)/DIR]), [dnl
236 LIBEBL_SUBDIR="$enable_libebl_subdir"])
237 AC_SUBST([LIBEBL_SUBDIR])
238 AC_DEFINE_UNQUOTED(LIBEBL_SUBDIR, "$LIBEBL_SUBDIR")
239 AH_TEMPLATE([LIBEBL_SUBDIR], [$libdir subdirectory containing libebl modules.])
241 dnl Test for zlib and bzlib, gives ZLIB/BZLIB .am
242 dnl conditional and config.h USE_ZLIB/USE_BZLIB #define.
245 eu_ZIPLIB(zlib,ZLIB,z,gzdirect,gzip)
246 eu_ZIPLIB(bzlib,BZLIB,bz2,BZ2_bzdopen,bzip2)
247 eu_ZIPLIB(lzma,LZMA,lzma,lzma_auto_decoder,[LZMA (xz)])
252 AC_CHECK_LIB([stdc++], [__cxa_demangle], [dnl
253 AC_DEFINE([USE_DEMANGLE], [1], [Defined if demangling is enabled])])
254 AM_CONDITIONAL(DEMANGLE, test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes")
255 AS_IF([test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes"],
256 [enable_demangler=yes],[enable_demangler=no])
258 AC_ARG_ENABLE([textrelcheck],
259 AS_HELP_STRING([--disable-textrelcheck],
260 [Disable textrelcheck being a fatal error]))
261 AM_CONDITIONAL(FATAL_TEXTREL, [test "x$enable_textrelcheck" != "xno"])
262 AS_IF([test "x$enable_textrelcheck" != "xno"],
263 [enable_textrelcheck=yes],[enable_textrelcheck=no])
265 AC_ARG_ENABLE([symbol-versioning],
266 AS_HELP_STRING([--disable-symbol-versioning],
267 [Disable symbol versioning in shared objects]))
268 AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"])
269 AS_IF([test "x$enable_symbol_versioning" = "xno"],
270 [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.])
271 enable_symbol_versioning=no],[enable_symbol_versioning=yes])
273 dnl Check if we have argp available from our libc
277 [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,argv,0,0,0); return 0;]
279 [libc_has_argp="true"],
280 [libc_has_argp="false"]
283 dnl If our libc doesn't provide argp, then test for libargp
284 if test "$libc_has_argp" = "false" ; then
285 AC_MSG_WARN("libc does not have argp")
286 AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
288 if test "$have_argp" = "false"; then
289 AC_MSG_ERROR("no libargp found")
296 AC_SUBST([argp_LDADD])
298 dnl The directories with content.
301 dnl Commented out for now.
302 dnl AC_CONFIG_FILES([doc/Makefile])
305 AC_CONFIG_FILES([lib/Makefile])
308 AC_CONFIG_FILES([libelf/Makefile])
310 dnl Higher-level ELF support library.
311 AC_CONFIG_FILES([libebl/Makefile])
313 dnl DWARF-ELF Lower-level Functions support library.
314 AC_CONFIG_FILES([libdwelf/Makefile])
317 AC_CONFIG_FILES([libdw/Makefile])
319 dnl Higher-level DWARF support library.
320 AC_CONFIG_FILES([libdwfl/Makefile])
322 dnl CPU handling library.
323 AC_CONFIG_FILES([libcpu/Makefile])
325 dnl Assembler library.
326 AM_CONDITIONAL(HAVE_LIBASM, true)dnl Used in tests/Makefile.am, which see.
327 AC_CONFIG_FILES([libasm/Makefile])
329 dnl CPU-specific backend libraries.
330 AC_CONFIG_FILES([backends/Makefile])
333 AC_CONFIG_FILES([src/Makefile po/Makefile.in])
336 AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
337 AC_CONFIG_FILES([tests/Makefile])
339 # Get the definitions necessary to create the Makefiles in the po
340 # subdirectories. This is a small subset of the gettext rules.
341 AC_SUBST(USE_NLS, yes)
344 dnl Appended to the config.h file.
345 dnl We hide all kinds of configuration magic in lib/eu-config.h.
346 AH_BOTTOM([#include <eu-config.h>])
348 dnl Version compatibility header.
349 AC_CONFIG_FILES([version.h:config/version.h.in])
350 AC_SUBST([eu_version])
352 # 1.234<whatever> -> 1234<whatever>
353 case "$PACKAGE_VERSION" in
354 [[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
355 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
357 case "$eu_version" in
359 # 1234.567 -> "1234", "567"
360 eu_extra_version="${eu_version#*.}"
361 eu_version="${eu_version%%.*}"
362 case "$eu_extra_version" in
363 [[0-9]][[0-9]][[0-9]]) ;;
364 [[0-9]][[0-9]]) eu_extra_version="${eu_extra_version}0" ;;
365 [[0-9]]) eu_extra_version="${eu_extra_version}00" ;;
366 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
374 case "$eu_version" in
375 0[[0-9]][[0-9]][[0-9]]) eu_version="${eu_version#0}$eu_extra_version" ;;
376 [[0-9]][[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}$eu_extra_version" ;;
377 [[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}0$eu_extra_version" ;;
378 [[0-9]][[0-9]]) eu_version="${eu_version}00$eu_extra_version";;
379 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
382 # Round up to the next release API (x.y) version.
383 eu_version=$(( (eu_version + 999) / 1000 ))
385 AC_CHECK_SIZEOF(long)
387 # On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
388 # of the user_regs_struct from sys/user.h. They are structurally the same
389 # but we get either one or the other.
390 AC_CHECK_TYPE([struct user_regs_struct],
391 [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
392 [[#include <sys/ptrace.h>]
393 [#include <sys/time.h>]
394 [#include <sys/user.h>]])
395 if test "$sys_user_has_user_regs" = "yes"; then
396 AC_DEFINE(HAVE_SYS_USER_REGS, 1,
397 [Define to 1 if <sys/user.h> defines struct user_regs_struct])
400 # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
401 # Likewise in a 32-bit build on a host where $CC -m64 works.
403 # `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
404 CC_BIARCH="$CC $utrace_biarch"
405 AC_SUBST([CC_BIARCH])
407 # In maintainer mode we really need flex and bison.
408 # Otherwise we really need a release dir with maintainer files generated.
409 if test "x$enable_maintainer_mode" = xyes; then
410 AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
411 if test "$HAVE_FLEX" = "no"; then
412 AC_MSG_ERROR([flex needed in maintainer mode])
414 AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
415 if test "$HAVE_BISON" = "no"; then
416 AC_MSG_ERROR([bison needed in maintainer mode])
419 if test ! -f ${srcdir}/libdw/known-dwarf.h; then
420 AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
424 # The testfiles are all compressed, we need bunzip2 when running make check
425 AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
426 if test "$HAVE_BUNZIP2" = "no"; then
427 AC_MSG_WARN([No bunzip2, needed to run make check])
433 =====================================================================
434 elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
435 =====================================================================
438 Program prefix ("eu-" recommended) : ${program_prefix}
439 Source code location : ${srcdir}
440 Maintainer mode : ${enable_maintainer_mode}
441 libebl modules subdirectory : ${LIBEBL_SUBDIR}
442 build arch : ${ac_cv_build}
444 RECOMMENDED FEATURES (should all be yes)
445 gzip support : ${with_zlib}
446 bzip2 support : ${with_bzlib}
447 lzma/xz support : ${with_lzma}
448 libstdc++ demangle support : ${enable_demangler}
449 File textrel check : ${enable_textrelcheck}
450 Symbol versioning : ${enable_symbol_versioning}
452 NOT RECOMMENDED FEATURES (should all be no)
453 Experimental thread safety : ${use_locks}
456 Deterministic archives by default : ${default_ar_deterministic}
457 Native language support : ${USE_NLS}
459 EXTRA TEST FEATURES (used with make check)
460 have bunzip2 installed (required) : ${HAVE_BUNZIP2}
461 debug branch prediction : ${use_debugpred}
462 gprof support : ${use_gprof}
463 gcov support : ${use_gcov}
464 run all tests under valgrind : ${use_valgrind}
465 gcc undefined behaviour sanitizer : ${use_undefined}
466 use rpath in tests : ${tests_use_rpath}
467 test biarch : ${utrace_cv_cc_biarch}