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 AC_CONFIG_SRCDIR([libelf/libelf.h])
33 AC_CONFIG_FILES([Makefile])
34 AC_CONFIG_HEADERS([config.h])
36 AC_CONFIG_MACRO_DIR([m4])
37 AC_CONFIG_FILES([m4/Makefile])
39 dnl The RPM spec file. We substitute a few values in the file.
40 AC_CONFIG_FILES([elfutils.spec:config/elfutils.spec.in])
45 AC_ARG_ENABLE(deterministic-archives,
46 [AS_HELP_STRING([--enable-deterministic-archives],
47 [ar and ranlib default to -D behavior])], [
48 if test "${enableval}" = no; then
49 default_ar_deterministic=false
51 default_ar_deterministic=true
52 fi], [default_ar_deterministic=false])
53 AC_DEFINE_UNQUOTED(DEFAULT_AR_DETERMINISTIC, $default_ar_deterministic,
54 [Should ar and ranlib use -D behavior by default?])
56 AC_ARG_ENABLE([thread-safety],
57 AS_HELP_STRING([--enable-thread-safety],
58 [enable thread safety of libraries EXPERIMENTAL]),
59 use_locks=$enableval, use_locks=no)
60 AM_CONDITIONAL(USE_LOCKS, test "$use_locks" = yes)
61 AS_IF([test "$use_locks" = yes], [AC_DEFINE(USE_LOCKS)])
62 AS_IF([test "$use_locks" = yes],
63 [AC_MSG_WARN([thread-safety is EXPERIMENTAL tests might fail.])])
65 AH_TEMPLATE([USE_LOCKS], [Defined if libraries should be thread-safe.])
71 # Only available since automake 1.12
72 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
73 AC_CHECK_TOOL([READELF], [readelf])
74 AC_CHECK_TOOL([NM], [nm])
76 # We use -std=gnu99 but have explicit checks for some language constructs
77 # and GNU extensions since some compilers claim GNU99 support, but don't
78 # really support all language extensions. In particular we need
79 # Mixed Declarations and Code
80 # https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
82 # https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
83 # Arrays of Variable Length
84 # https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
85 AC_CACHE_CHECK([for gcc with GNU99 support], ac_cv_c99, [dnl
87 CFLAGS="$CFLAGS -std=gnu99"
88 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
91 for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
94 double bar (double a, double b)
96 double square (double z) { return z * z; }
97 return square (a) + square (b);
102 struct S { int x[[n]]; };
104 ac_cv_c99=yes, ac_cv_c99=no)
105 CFLAGS="$old_CFLAGS"])
106 AS_IF([test "x$ac_cv_c99" != xyes],
107 AC_MSG_ERROR([gcc with GNU99 support required]))
109 AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl
110 # Use the same flags that we use for our DSOs, so the test is representative.
111 # Some old compiler/linker/libc combinations fail some ways and not others.
112 save_CFLAGS="$CFLAGS"
113 save_LDFLAGS="$LDFLAGS"
114 CFLAGS="-fpic $CFLAGS"
115 LDFLAGS="-shared -Wl,-z,defs,-z,relro $LDFLAGS"
117 AC_LANG_PROGRAM([[#include <stdlib.h>
119 static __thread int a; int foo (int b) { return a + b; }]],
120 [[exit (foo (0));]])],
121 ac_cv_tls=yes, ac_cv_tls=no)
122 CFLAGS="$save_CFLAGS"
123 LDFLAGS="$save_LDFLAGS"])
124 AS_IF([test "x$ac_cv_tls" != xyes],
125 AC_MSG_ERROR([__thread support required]))
127 dnl This test must come as early as possible after the compiler configuration
128 dnl tests, because the choice of the file model can (in principle) affect
129 dnl whether functions and headers are available, whether they work, etc.
132 dnl Enable the linker to be build as a native-only linker. By default it
133 dnl can handle all architectures but this comes at a cost. A native
134 dnl will be slightly faster, small, and has fewer dependencies.
136 AC_ARG_ENABLE([generic],
137 AS_HELP_STRING([--disable-generic], [do not build generic linker]), [dnl
138 if test "$enable_generic" = no; then
141 AC_DEFINE(NATIVE_ELF, 32)
146 AC_MSG_ERROR([no machine-specific linker for this configuration available])
150 AH_TEMPLATE([NATIVE_ELF],
151 [Define to 32 or 64 if a specific implementation is wanted.])
152 AM_CONDITIONAL(NATIVE_LD, test "$native_ld" = yes)
153 dnl The automake generated Makefile cannot deal with macros in the name
154 dnl of files if at any time there is no such file, even if the filename
155 dnl would not be used.
156 AS_IF([test -z "$base_cpu"], [base_cpu=none])
158 dnl Support to work around automake's inflexible dependency generation.
159 dnl See src/Makefile.am for more information.
160 AM_CONDITIONAL(NEVER, false)
162 dnl enable debugging of branch prediction.
163 AC_ARG_ENABLE([debugpred],
164 AS_HELP_STRING([--enable-debugpred],[build binaries with support to debug branch prediction]),
165 [use_debugpred=$enableval], [use_debugpred=no])
166 case $use_debugpred in
167 yes) use_debugpred_val=1 ;;
168 *) use_debugpred_val=0 ;;
170 AC_SUBST([DEBUGPRED], $use_debugpred_val)
172 dnl Enable gprof suport.
173 AC_ARG_ENABLE([gprof],
174 AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=$enableval], [use_gprof=no])
175 if test "$use_gprof" = yes; then
177 LDFLAGS="$LDFLAGS -pg"
179 AM_CONDITIONAL(GPROF, test "$use_gprof" = yes)
181 # Enable gcov suport.
182 AC_ARG_ENABLE([gcov],
183 AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=$enableval], [use_gcov=no])
184 if test "$use_gcov" = yes; then
185 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
186 LDFLAGS="$LDFLAGS -fprofile-arcs"
188 AM_CONDITIONAL(GCOV, test "$use_gcov" = yes)
190 AC_ARG_ENABLE([sanitize-undefined],
191 AS_HELP_STRING([--enable-sanitize-undefined],
192 [Use gcc undefined behaviour sanitizer]),
193 [use_undefined=$enableval], [use_undefined=no])
194 if test "$use_undefined" = yes; then
196 old_CXXFLAGS="$CXXFLAGS"
197 # We explicitly use unaligned access when possible (see ALLOW_UNALIGNED)
198 # We want to fail immediately on first error, don't try to recover.
199 CFLAGS="$CFLAGS -fsanitize=undefined -fno-sanitize-recover"
200 CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover"
201 AC_LINK_IFELSE([AC_LANG_SOURCE([int main (int argc, char **argv) { return 0; }])], use_undefined=yes, use_undefined=no)
202 AS_IF([test "x$use_undefined" != xyes],
203 AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
204 CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
206 case $use_undefined in
207 yes) check_undefined_val=1 ;;
208 *) check_undefined_val=0 ;;
210 AC_DEFINE_UNQUOTED(CHECK_UNDEFINED, $check_undefined_val,
211 [Building with -fsanitize=undefined or not])
213 AC_ARG_ENABLE([valgrind],
214 AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
215 [use_valgrind=$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 AC_CACHE_CHECK([whether gcc accepts -Wstack-usage], ac_cv_stack_usage, [dnl
275 CFLAGS="$CFLAGS -Wstack-usage=262144"
276 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
277 ac_cv_stack_usage=yes, ac_cv_stack_usage=no)
278 CFLAGS="$old_CFLAGS"])
279 AM_CONDITIONAL(ADD_STACK_USAGE_WARNING, [test "x$ac_cv_stack_usage" != "xno"])
281 dnl Check if we have argp available from our libc
285 [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,argv,0,0,0); return 0;]
287 [libc_has_argp="true"],
288 [libc_has_argp="false"]
291 dnl If our libc doesn't provide argp, then test for libargp
292 if test "$libc_has_argp" = "false" ; then
293 AC_MSG_WARN("libc does not have argp")
294 AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
296 if test "$have_argp" = "false"; then
297 AC_MSG_ERROR("no libargp found")
304 AC_SUBST([argp_LDADD])
306 dnl The directories with content.
309 dnl Commented out for now.
310 dnl AC_CONFIG_FILES([doc/Makefile])
313 AC_CONFIG_FILES([lib/Makefile])
316 AC_CONFIG_FILES([libelf/Makefile])
318 dnl Higher-level ELF support library.
319 AC_CONFIG_FILES([libebl/Makefile])
321 dnl DWARF-ELF Lower-level Functions support library.
322 AC_CONFIG_FILES([libdwelf/Makefile])
325 AC_CONFIG_FILES([libdw/Makefile])
327 dnl Higher-level DWARF support library.
328 AC_CONFIG_FILES([libdwfl/Makefile])
330 dnl CPU handling library.
331 AC_CONFIG_FILES([libcpu/Makefile])
333 dnl Assembler library.
334 AM_CONDITIONAL(HAVE_LIBASM, true)dnl Used in tests/Makefile.am, which see.
335 AC_CONFIG_FILES([libasm/Makefile])
337 dnl CPU-specific backend libraries.
338 AC_CONFIG_FILES([backends/Makefile])
341 AC_CONFIG_FILES([src/Makefile po/Makefile.in])
344 AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
345 AC_CONFIG_FILES([tests/Makefile])
347 # Get the definitions necessary to create the Makefiles in the po
348 # subdirectories. This is a small subset of the gettext rules.
349 AC_SUBST(USE_NLS, yes)
352 dnl Appended to the config.h file.
353 dnl We hide all kinds of configuration magic in lib/eu-config.h.
354 AH_BOTTOM([#include <eu-config.h>])
356 dnl Version compatibility header.
357 AC_CONFIG_FILES([version.h:config/version.h.in])
358 AC_SUBST([eu_version])
360 # 1.234<whatever> -> 1234<whatever>
361 case "$PACKAGE_VERSION" in
362 [[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
363 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
365 case "$eu_version" in
367 # 1234.567 -> "1234", "567"
368 eu_extra_version="${eu_version#*.}"
369 eu_version="${eu_version%%.*}"
370 case "$eu_extra_version" in
371 [[0-9]][[0-9]][[0-9]]) ;;
372 [[0-9]][[0-9]]) eu_extra_version="${eu_extra_version}0" ;;
373 [[0-9]]) eu_extra_version="${eu_extra_version}00" ;;
374 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
382 case "$eu_version" in
383 0[[0-9]][[0-9]][[0-9]]) eu_version="${eu_version#0}$eu_extra_version" ;;
384 [[0-9]][[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}$eu_extra_version" ;;
385 [[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}0$eu_extra_version" ;;
386 [[0-9]][[0-9]]) eu_version="${eu_version}00$eu_extra_version";;
387 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
390 # Round up to the next release API (x.y) version.
391 eu_version=$(( (eu_version + 999) / 1000 ))
393 dnl Unique ID for this build.
394 MODVERSION="Build for ${LIBEBL_SUBDIR} ${eu_version} ${ac_cv_build}"
395 AC_SUBST([MODVERSION])
396 AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
397 AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
399 AC_CHECK_SIZEOF(long)
401 # On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
402 # of the user_regs_struct from sys/user.h. They are structurally the same
403 # but we get either one or the other.
404 AC_CHECK_TYPE([struct user_regs_struct],
405 [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
406 [[#include <sys/ptrace.h>]
407 [#include <sys/time.h>]
408 [#include <sys/user.h>]])
409 if test "$sys_user_has_user_regs" = "yes"; then
410 AC_DEFINE(HAVE_SYS_USER_REGS, 1,
411 [Define to 1 if <sys/user.h> defines struct user_regs_struct])
414 # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
415 # Likewise in a 32-bit build on a host where $CC -m64 works.
417 # `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
418 CC_BIARCH="$CC $utrace_biarch"
419 AC_SUBST([CC_BIARCH])
421 # In maintainer mode we really need flex and bison.
422 # Otherwise we really need a release dir with maintainer files generated.
423 if test "x$enable_maintainer_mode" = xyes; then
424 AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
425 if test "$HAVE_FLEX" = "no"; then
426 AC_MSG_ERROR([flex needed in maintainer mode])
428 AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
429 if test "$HAVE_BISON" = "no"; then
430 AC_MSG_ERROR([bison needed in maintainer mode])
433 if test ! -f ${srcdir}/libdw/known-dwarf.h; then
434 AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
438 # The testfiles are all compressed, we need bunzip2 when running make check
439 AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
440 if test "$HAVE_BUNZIP2" = "no"; then
441 AC_MSG_WARN([No bunzip2, needed to run make check])
447 =====================================================================
448 elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
449 =====================================================================
452 Program prefix ("eu-" recommended) : ${program_prefix}
453 Source code location : ${srcdir}
454 Maintainer mode : ${enable_maintainer_mode}
455 libebl modules subdirectory : ${LIBEBL_SUBDIR}
456 build arch : ${ac_cv_build}
458 RECOMMENDED FEATURES (should all be yes)
459 gzip support : ${with_zlib}
460 bzip2 support : ${with_bzlib}
461 lzma/xz support : ${with_lzma}
462 libstdc++ demangle support : ${enable_demangler}
463 File textrel check : ${enable_textrelcheck}
464 Symbol versioning : ${enable_symbol_versioning}
466 NOT RECOMMENDED FEATURES (should all be no)
467 Experimental thread safety : ${use_locks}
470 Deterministic archives by default : ${default_ar_deterministic}
471 Native language support : ${USE_NLS}
473 EXTRA TEST FEATURES (used with make check)
474 have bunzip2 installed (required) : ${HAVE_BUNZIP2}
475 debug branch prediction : ${use_debugpred}
476 gprof support : ${use_gprof}
477 gcov support : ${use_gcov}
478 run all tests under valgrind : ${use_valgrind}
479 gcc undefined behaviour sanitizer : ${use_undefined}
480 use rpath in tests : ${tests_use_rpath}
481 test biarch : ${utrace_cv_cc_biarch}