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-recover"
206 CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover"
207 AC_LINK_IFELSE([AC_LANG_SOURCE([int main (int argc, char **argv) { return 0; }])], use_undefined=yes, use_undefined=no)
208 AS_IF([test "x$use_undefined" != xyes],
209 AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
210 CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
212 case $use_undefined in
213 yes) check_undefined_val=1 ;;
214 *) check_undefined_val=0 ;;
216 AC_DEFINE_UNQUOTED(CHECK_UNDEFINED, $check_undefined_val,
217 [Building with -fsanitize=undefined or not])
219 AC_ARG_ENABLE([valgrind],
220 AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
221 [use_valgrind=$enableval], [use_valgrind=no])
222 if test "$use_valgrind" = yes; then
223 AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
224 if test "$HAVE_VALGRIND" = "no"; then
225 AC_MSG_ERROR([valgrind not found])
228 AM_CONDITIONAL(USE_VALGRIND, test "$use_valgrind" = yes)
230 AM_CONDITIONAL(BUILD_STATIC, [dnl
231 test "$use_gprof" = yes -o "$use_gcov" = yes])
233 AC_ARG_ENABLE([tests-rpath],
234 AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
235 [tests_use_rpath=$enableval], [tests_use_rpath=no])
236 AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
238 LIBEBL_SUBDIR="$PACKAGE"
239 AC_ARG_ENABLE([libebl-subdir],
240 AS_HELP_STRING([--enable-libebl-subdir=DIR],
241 [install libebl_CPU modules in $(libdir)/DIR]), [dnl
242 LIBEBL_SUBDIR="$enable_libebl_subdir"])
243 AC_SUBST([LIBEBL_SUBDIR])
244 AC_DEFINE_UNQUOTED(LIBEBL_SUBDIR, "$LIBEBL_SUBDIR")
245 AH_TEMPLATE([LIBEBL_SUBDIR], [$libdir subdirectory containing libebl modules.])
247 dnl Test for zlib and bzlib, gives ZLIB/BZLIB .am
248 dnl conditional and config.h USE_ZLIB/USE_BZLIB #define.
251 eu_ZIPLIB(zlib,ZLIB,z,gzdirect,gzip)
252 eu_ZIPLIB(bzlib,BZLIB,bz2,BZ2_bzdopen,bzip2)
253 eu_ZIPLIB(lzma,LZMA,lzma,lzma_auto_decoder,[LZMA (xz)])
258 AC_CHECK_LIB([stdc++], [__cxa_demangle], [dnl
259 AC_DEFINE([USE_DEMANGLE], [1], [Defined if demangling is enabled])])
260 AM_CONDITIONAL(DEMANGLE, test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes")
261 AS_IF([test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes"],
262 [enable_demangler=yes],[enable_demangler=no])
264 AC_ARG_ENABLE([textrelcheck],
265 AS_HELP_STRING([--disable-textrelcheck],
266 [Disable textrelcheck being a fatal error]))
267 AM_CONDITIONAL(FATAL_TEXTREL, [test "x$enable_textrelcheck" != "xno"])
268 AS_IF([test "x$enable_textrelcheck" != "xno"],
269 [enable_textrelcheck=yes],[enable_textrelcheck=no])
271 AC_ARG_ENABLE([symbol-versioning],
272 AS_HELP_STRING([--disable-symbol-versioning],
273 [Disable symbol versioning in shared objects]))
274 AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"])
275 AS_IF([test "x$enable_symbol_versioning" = "xno"],
276 [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.])
277 enable_symbol_versioning=no],[enable_symbol_versioning=yes])
279 dnl Check if we have argp available from our libc
283 [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,argv,0,0,0); return 0;]
285 [libc_has_argp="true"],
286 [libc_has_argp="false"]
289 dnl If our libc doesn't provide argp, then test for libargp
290 if test "$libc_has_argp" = "false" ; then
291 AC_MSG_WARN("libc does not have argp")
292 AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
294 if test "$have_argp" = "false"; then
295 AC_MSG_ERROR("no libargp found")
302 AC_SUBST([argp_LDADD])
304 dnl The directories with content.
307 dnl Commented out for now.
308 dnl AC_CONFIG_FILES([doc/Makefile])
311 AC_CONFIG_FILES([lib/Makefile])
314 AC_CONFIG_FILES([libelf/Makefile])
316 dnl Higher-level ELF support library.
317 AC_CONFIG_FILES([libebl/Makefile])
319 dnl DWARF-ELF Lower-level Functions support library.
320 AC_CONFIG_FILES([libdwelf/Makefile])
323 AC_CONFIG_FILES([libdw/Makefile])
325 dnl Higher-level DWARF support library.
326 AC_CONFIG_FILES([libdwfl/Makefile])
328 dnl CPU handling library.
329 AC_CONFIG_FILES([libcpu/Makefile])
331 dnl Assembler library.
332 AM_CONDITIONAL(HAVE_LIBASM, true)dnl Used in tests/Makefile.am, which see.
333 AC_CONFIG_FILES([libasm/Makefile])
335 dnl CPU-specific backend libraries.
336 AC_CONFIG_FILES([backends/Makefile])
339 AC_CONFIG_FILES([src/Makefile po/Makefile.in])
342 AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
343 AC_CONFIG_FILES([tests/Makefile])
345 # Get the definitions necessary to create the Makefiles in the po
346 # subdirectories. This is a small subset of the gettext rules.
347 AC_SUBST(USE_NLS, yes)
350 dnl Appended to the config.h file.
351 dnl We hide all kinds of configuration magic in lib/eu-config.h.
352 AH_BOTTOM([#include <eu-config.h>])
354 dnl Version compatibility header.
355 AC_CONFIG_FILES([version.h:config/version.h.in])
356 AC_SUBST([eu_version])
358 # 1.234<whatever> -> 1234<whatever>
359 case "$PACKAGE_VERSION" in
360 [[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
361 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
363 case "$eu_version" in
365 # 1234.567 -> "1234", "567"
366 eu_extra_version="${eu_version#*.}"
367 eu_version="${eu_version%%.*}"
368 case "$eu_extra_version" in
369 [[0-9]][[0-9]][[0-9]]) ;;
370 [[0-9]][[0-9]]) eu_extra_version="${eu_extra_version}0" ;;
371 [[0-9]]) eu_extra_version="${eu_extra_version}00" ;;
372 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
380 case "$eu_version" in
381 0[[0-9]][[0-9]][[0-9]]) eu_version="${eu_version#0}$eu_extra_version" ;;
382 [[0-9]][[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}$eu_extra_version" ;;
383 [[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}0$eu_extra_version" ;;
384 [[0-9]][[0-9]]) eu_version="${eu_version}00$eu_extra_version";;
385 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
388 # Round up to the next release API (x.y) version.
389 eu_version=$(( (eu_version + 999) / 1000 ))
391 AC_CHECK_SIZEOF(long)
393 # On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
394 # of the user_regs_struct from sys/user.h. They are structurally the same
395 # but we get either one or the other.
396 AC_CHECK_TYPE([struct user_regs_struct],
397 [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
398 [[#include <sys/ptrace.h>]
399 [#include <sys/time.h>]
400 [#include <sys/user.h>]])
401 if test "$sys_user_has_user_regs" = "yes"; then
402 AC_DEFINE(HAVE_SYS_USER_REGS, 1,
403 [Define to 1 if <sys/user.h> defines struct user_regs_struct])
406 # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
407 # Likewise in a 32-bit build on a host where $CC -m64 works.
409 # `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
410 CC_BIARCH="$CC $utrace_biarch"
411 AC_SUBST([CC_BIARCH])
413 # In maintainer mode we really need flex and bison.
414 # Otherwise we really need a release dir with maintainer files generated.
415 if test "x$enable_maintainer_mode" = xyes; then
416 AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
417 if test "$HAVE_FLEX" = "no"; then
418 AC_MSG_ERROR([flex needed in maintainer mode])
420 AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
421 if test "$HAVE_BISON" = "no"; then
422 AC_MSG_ERROR([bison needed in maintainer mode])
425 if test ! -f ${srcdir}/libdw/known-dwarf.h; then
426 AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
430 # The testfiles are all compressed, we need bunzip2 when running make check
431 AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
432 if test "$HAVE_BUNZIP2" = "no"; then
433 AC_MSG_WARN([No bunzip2, needed to run make check])
439 =====================================================================
440 elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
441 =====================================================================
444 Program prefix ("eu-" recommended) : ${program_prefix}
445 Source code location : ${srcdir}
446 Maintainer mode : ${enable_maintainer_mode}
447 libebl modules subdirectory : ${LIBEBL_SUBDIR}
448 build arch : ${ac_cv_build}
450 RECOMMENDED FEATURES (should all be yes)
451 gzip support : ${with_zlib}
452 bzip2 support : ${with_bzlib}
453 lzma/xz support : ${with_lzma}
454 libstdc++ demangle support : ${enable_demangler}
455 File textrel check : ${enable_textrelcheck}
456 Symbol versioning : ${enable_symbol_versioning}
458 NOT RECOMMENDED FEATURES (should all be no)
459 Experimental thread safety : ${use_locks}
462 Deterministic archives by default : ${default_ar_deterministic}
463 Native language support : ${USE_NLS}
465 EXTRA TEST FEATURES (used with make check)
466 have bunzip2 installed (required) : ${HAVE_BUNZIP2}
467 debug branch prediction : ${use_debugpred}
468 gprof support : ${use_gprof}
469 gcov support : ${use_gcov}
470 run all tests under valgrind : ${use_valgrind}
471 gcc undefined behaviour sanitizer : ${use_undefined}
472 use rpath in tests : ${tests_use_rpath}
473 test biarch : ${utrace_cv_cc_biarch}