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],[0.164],[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 AM_SILENT_RULES([yes])
34 AC_CONFIG_SRCDIR([libelf/libelf.h])
35 AC_CONFIG_FILES([Makefile])
36 AC_CONFIG_HEADERS([config.h])
38 AC_CONFIG_MACRO_DIR([m4])
39 AC_CONFIG_FILES([m4/Makefile])
41 dnl The RPM spec file. We substitute a few values in the file.
42 AC_CONFIG_FILES([elfutils.spec:config/elfutils.spec.in])
47 AC_ARG_ENABLE(deterministic-archives,
48 [AS_HELP_STRING([--enable-deterministic-archives],
49 [ar and ranlib default to -D behavior])], [
50 if test "${enableval}" = no; then
51 default_ar_deterministic=false
53 default_ar_deterministic=true
54 fi], [default_ar_deterministic=false])
55 AC_DEFINE_UNQUOTED(DEFAULT_AR_DETERMINISTIC, $default_ar_deterministic,
56 [Should ar and ranlib use -D behavior by default?])
58 AC_ARG_ENABLE([thread-safety],
59 AS_HELP_STRING([--enable-thread-safety],
60 [enable thread safety of libraries EXPERIMENTAL]),
61 use_locks=$enableval, use_locks=no)
62 AM_CONDITIONAL(USE_LOCKS, test "$use_locks" = yes)
63 AS_IF([test "$use_locks" = yes], [AC_DEFINE(USE_LOCKS)])
64 AS_IF([test "$use_locks" = yes],
65 [AC_MSG_WARN([thread-safety is EXPERIMENTAL tests might fail.])])
67 AH_TEMPLATE([USE_LOCKS], [Defined if libraries should be thread-safe.])
73 # Only available since automake 1.12
74 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
75 AC_CHECK_TOOL([READELF], [readelf])
76 AC_CHECK_TOOL([NM], [nm])
78 # We use -std=gnu99 but have explicit checks for some language constructs
79 # and GNU extensions since some compilers claim GNU99 support, but don't
80 # really support all language extensions. In particular we need
81 # Mixed Declarations and Code
82 # https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
84 # https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
85 # Arrays of Variable Length
86 # https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
87 AC_CACHE_CHECK([for gcc with GNU99 support], ac_cv_c99, [dnl
89 CFLAGS="$CFLAGS -std=gnu99"
90 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
93 for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
96 double bar (double a, double b)
98 double square (double z) { return z * z; }
99 return square (a) + square (b);
104 struct S { int x[[n]]; };
106 ac_cv_c99=yes, ac_cv_c99=no)
107 CFLAGS="$old_CFLAGS"])
108 AS_IF([test "x$ac_cv_c99" != xyes],
109 AC_MSG_ERROR([gcc with GNU99 support required]))
111 AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl
112 # Use the same flags that we use for our DSOs, so the test is representative.
113 # Some old compiler/linker/libc combinations fail some ways and not others.
114 save_CFLAGS="$CFLAGS"
115 save_LDFLAGS="$LDFLAGS"
116 CFLAGS="-fPIC $CFLAGS"
117 LDFLAGS="-shared -Wl,-z,defs,-z,relro $LDFLAGS"
119 AC_LANG_PROGRAM([[#include <stdlib.h>
121 static __thread int a; int foo (int b) { return a + b; }]],
122 [[exit (foo (0));]])],
123 ac_cv_tls=yes, ac_cv_tls=no)
124 CFLAGS="$save_CFLAGS"
125 LDFLAGS="$save_LDFLAGS"])
126 AS_IF([test "x$ac_cv_tls" != xyes],
127 AC_MSG_ERROR([__thread support required]))
129 dnl This test must come as early as possible after the compiler configuration
130 dnl tests, because the choice of the file model can (in principle) affect
131 dnl whether functions and headers are available, whether they work, etc.
134 dnl Enable the linker to be build as a native-only linker. By default it
135 dnl can handle all architectures but this comes at a cost. A native
136 dnl will be slightly faster, small, and has fewer dependencies.
138 AC_ARG_ENABLE([generic],
139 AS_HELP_STRING([--disable-generic], [do not build generic linker]), [dnl
140 if test "$enable_generic" = no; then
143 AC_DEFINE(NATIVE_ELF, 32)
148 AC_MSG_ERROR([no machine-specific linker for this configuration available])
152 AH_TEMPLATE([NATIVE_ELF],
153 [Define to 32 or 64 if a specific implementation is wanted.])
154 AM_CONDITIONAL(NATIVE_LD, test "$native_ld" = yes)
155 dnl The automake generated Makefile cannot deal with macros in the name
156 dnl of files if at any time there is no such file, even if the filename
157 dnl would not be used.
158 AS_IF([test -z "$base_cpu"], [base_cpu=none])
160 dnl Support to work around automake's inflexible dependency generation.
161 dnl See src/Makefile.am for more information.
162 AM_CONDITIONAL(NEVER, false)
164 dnl enable debugging of branch prediction.
165 AC_ARG_ENABLE([debugpred],
166 AS_HELP_STRING([--enable-debugpred],[build binaries with support to debug branch prediction]),
167 [use_debugpred=$enableval], [use_debugpred=no])
168 case $use_debugpred in
169 yes) use_debugpred_val=1 ;;
170 *) use_debugpred_val=0 ;;
172 AC_SUBST([DEBUGPRED], $use_debugpred_val)
174 dnl Enable gprof suport.
175 AC_ARG_ENABLE([gprof],
176 AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=$enableval], [use_gprof=no])
177 if test "$use_gprof" = yes; then
179 LDFLAGS="$LDFLAGS -pg"
181 AM_CONDITIONAL(GPROF, test "$use_gprof" = yes)
183 # Enable gcov suport.
184 AC_ARG_ENABLE([gcov],
185 AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=$enableval], [use_gcov=no])
186 if test "$use_gcov" = yes; then
187 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
188 LDFLAGS="$LDFLAGS -fprofile-arcs"
190 AM_CONDITIONAL(GCOV, test "$use_gcov" = yes)
192 AC_ARG_ENABLE([sanitize-undefined],
193 AS_HELP_STRING([--enable-sanitize-undefined],
194 [Use gcc undefined behaviour sanitizer]),
195 [use_undefined=$enableval], [use_undefined=no])
196 if test "$use_undefined" = yes; then
198 old_CXXFLAGS="$CXXFLAGS"
199 # We explicitly use unaligned access when possible (see ALLOW_UNALIGNED)
200 # We want to fail immediately on first error, don't try to recover.
201 CFLAGS="$CFLAGS -fsanitize=undefined -fno-sanitize-recover"
202 CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover"
203 AC_LINK_IFELSE([AC_LANG_SOURCE([int main (int argc, char **argv) { return 0; }])], use_undefined=yes, use_undefined=no)
204 AS_IF([test "x$use_undefined" != xyes],
205 AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
206 CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
208 case $use_undefined in
209 yes) check_undefined_val=1 ;;
210 *) check_undefined_val=0 ;;
212 AC_DEFINE_UNQUOTED(CHECK_UNDEFINED, $check_undefined_val,
213 [Building with -fsanitize=undefined or not])
215 AC_ARG_ENABLE([valgrind],
216 AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
217 [use_valgrind=$enableval], [use_valgrind=no])
218 if test "$use_valgrind" = yes; then
219 AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
220 if test "$HAVE_VALGRIND" = "no"; then
221 AC_MSG_ERROR([valgrind not found])
224 AM_CONDITIONAL(USE_VALGRIND, test "$use_valgrind" = yes)
226 AM_CONDITIONAL(BUILD_STATIC, [dnl
227 test "$use_gprof" = yes -o "$use_gcov" = yes])
229 AC_ARG_ENABLE([tests-rpath],
230 AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
231 [tests_use_rpath=$enableval], [tests_use_rpath=no])
232 AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
234 LIBEBL_SUBDIR="$PACKAGE"
235 AC_ARG_ENABLE([libebl-subdir],
236 AS_HELP_STRING([--enable-libebl-subdir=DIR],
237 [install libebl_CPU modules in $(libdir)/DIR]), [dnl
238 LIBEBL_SUBDIR="$enable_libebl_subdir"])
239 AC_SUBST([LIBEBL_SUBDIR])
240 AC_DEFINE_UNQUOTED(LIBEBL_SUBDIR, "$LIBEBL_SUBDIR")
241 AH_TEMPLATE([LIBEBL_SUBDIR], [$libdir subdirectory containing libebl modules.])
243 dnl zlib is mandatory.
246 eu_ZIPLIB(zlib,ZLIB,z,gzdirect,gzip)
247 AS_IF([test "x$with_zlib" = xno], [AC_MSG_ERROR("zlib not found")])
250 dnl Test for bzlib and xz/lzma, gives BZLIB/LZMALIB .am
251 dnl conditional and config.h USE_BZLIB/USE_LZMALIB #define.
254 eu_ZIPLIB(bzlib,BZLIB,bz2,BZ2_bzdopen,bzip2)
255 eu_ZIPLIB(lzma,LZMA,lzma,lzma_auto_decoder,[LZMA (xz)])
260 AC_CHECK_LIB([stdc++], [__cxa_demangle], [dnl
261 AC_DEFINE([USE_DEMANGLE], [1], [Defined if demangling is enabled])])
262 AM_CONDITIONAL(DEMANGLE, test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes")
263 AS_IF([test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes"],
264 [enable_demangler=yes],[enable_demangler=no])
266 AC_ARG_ENABLE([textrelcheck],
267 AS_HELP_STRING([--disable-textrelcheck],
268 [Disable textrelcheck being a fatal error]))
269 AM_CONDITIONAL(FATAL_TEXTREL, [test "x$enable_textrelcheck" != "xno"])
270 AS_IF([test "x$enable_textrelcheck" != "xno"],
271 [enable_textrelcheck=yes],[enable_textrelcheck=no])
273 AC_ARG_ENABLE([symbol-versioning],
274 AS_HELP_STRING([--disable-symbol-versioning],
275 [Disable symbol versioning in shared objects]))
276 AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"])
277 AS_IF([test "x$enable_symbol_versioning" = "xno"],
278 [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.])
279 enable_symbol_versioning=no],[enable_symbol_versioning=yes])
281 AC_CACHE_CHECK([whether gcc accepts -Wstack-usage], ac_cv_stack_usage, [dnl
283 CFLAGS="$CFLAGS -Wstack-usage=262144"
284 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
285 ac_cv_stack_usage=yes, ac_cv_stack_usage=no)
286 CFLAGS="$old_CFLAGS"])
287 AM_CONDITIONAL(ADD_STACK_USAGE_WARNING, [test "x$ac_cv_stack_usage" != "xno"])
289 dnl Check if we have argp available from our libc
293 [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,argv,0,0,0); return 0;]
295 [libc_has_argp="true"],
296 [libc_has_argp="false"]
299 dnl If our libc doesn't provide argp, then test for libargp
300 if test "$libc_has_argp" = "false" ; then
301 AC_MSG_WARN("libc does not have argp")
302 AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
304 if test "$have_argp" = "false"; then
305 AC_MSG_ERROR("no libargp found")
312 AC_SUBST([argp_LDADD])
314 dnl The directories with content.
317 dnl Commented out for now.
318 dnl AC_CONFIG_FILES([doc/Makefile])
321 AC_CONFIG_FILES([lib/Makefile])
324 AC_CONFIG_FILES([libelf/Makefile])
326 dnl Higher-level ELF support library.
327 AC_CONFIG_FILES([libebl/Makefile])
329 dnl DWARF-ELF Lower-level Functions support library.
330 AC_CONFIG_FILES([libdwelf/Makefile])
333 AC_CONFIG_FILES([libdw/Makefile])
335 dnl Higher-level DWARF support library.
336 AC_CONFIG_FILES([libdwfl/Makefile])
338 dnl CPU handling library.
339 AC_CONFIG_FILES([libcpu/Makefile])
341 dnl Assembler library.
342 AM_CONDITIONAL(HAVE_LIBASM, true)dnl Used in tests/Makefile.am, which see.
343 AC_CONFIG_FILES([libasm/Makefile])
345 dnl CPU-specific backend libraries.
346 AC_CONFIG_FILES([backends/Makefile])
349 AC_CONFIG_FILES([src/Makefile po/Makefile.in])
352 AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
353 AC_CONFIG_FILES([tests/Makefile])
355 # Get the definitions necessary to create the Makefiles in the po
356 # subdirectories. This is a small subset of the gettext rules.
357 AC_SUBST(USE_NLS, yes)
360 dnl Appended to the config.h file.
361 dnl We hide all kinds of configuration magic in lib/eu-config.h.
362 AH_BOTTOM([#include <eu-config.h>])
364 dnl Version compatibility header.
365 AC_CONFIG_FILES([version.h:config/version.h.in])
366 AC_SUBST([eu_version])
368 # 1.234<whatever> -> 1234<whatever>
369 case "$PACKAGE_VERSION" in
370 [[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
371 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
373 case "$eu_version" in
375 # 1234.567 -> "1234", "567"
376 eu_extra_version="${eu_version#*.}"
377 eu_version="${eu_version%%.*}"
378 case "$eu_extra_version" in
379 [[0-9]][[0-9]][[0-9]]) ;;
380 [[0-9]][[0-9]]) eu_extra_version="${eu_extra_version}0" ;;
381 [[0-9]]) eu_extra_version="${eu_extra_version}00" ;;
382 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
390 case "$eu_version" in
391 0[[0-9]][[0-9]][[0-9]]) eu_version="${eu_version#0}$eu_extra_version" ;;
392 [[0-9]][[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}$eu_extra_version" ;;
393 [[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}0$eu_extra_version" ;;
394 [[0-9]][[0-9]]) eu_version="${eu_version}00$eu_extra_version";;
395 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
398 # Round up to the next release API (x.y) version.
399 eu_version=$(( (eu_version + 999) / 1000 ))
401 dnl Unique ID for this build.
402 MODVERSION="Build for ${LIBEBL_SUBDIR} ${eu_version} ${ac_cv_build}"
403 AC_SUBST([MODVERSION])
404 AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
405 AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
407 AC_CHECK_SIZEOF(long)
409 # On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
410 # of the user_regs_struct from sys/user.h. They are structurally the same
411 # but we get either one or the other.
412 AC_CHECK_TYPE([struct user_regs_struct],
413 [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
414 [[#include <sys/ptrace.h>]
415 [#include <sys/time.h>]
416 [#include <sys/user.h>]])
417 if test "$sys_user_has_user_regs" = "yes"; then
418 AC_DEFINE(HAVE_SYS_USER_REGS, 1,
419 [Define to 1 if <sys/user.h> defines struct user_regs_struct])
422 # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
423 # Likewise in a 32-bit build on a host where $CC -m64 works.
425 # `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
426 CC_BIARCH="$CC $utrace_biarch"
427 AC_SUBST([CC_BIARCH])
429 # In maintainer mode we really need flex and bison.
430 # Otherwise we really need a release dir with maintainer files generated.
431 if test "x$enable_maintainer_mode" = xyes; then
432 AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
433 if test "$HAVE_FLEX" = "no"; then
434 AC_MSG_ERROR([flex needed in maintainer mode])
436 AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
437 if test "$HAVE_BISON" = "no"; then
438 AC_MSG_ERROR([bison needed in maintainer mode])
441 if test ! -f ${srcdir}/libdw/known-dwarf.h; then
442 AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
446 # The testfiles are all compressed, we need bunzip2 when running make check
447 AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
448 if test "$HAVE_BUNZIP2" = "no"; then
449 AC_MSG_WARN([No bunzip2, needed to run make check])
455 =====================================================================
456 elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
457 =====================================================================
460 Program prefix ("eu-" recommended) : ${program_prefix}
461 Source code location : ${srcdir}
462 Maintainer mode : ${enable_maintainer_mode}
463 libebl modules subdirectory : ${LIBEBL_SUBDIR}
464 build arch : ${ac_cv_build}
466 RECOMMENDED FEATURES (should all be yes)
467 gzip support : ${with_zlib}
468 bzip2 support : ${with_bzlib}
469 lzma/xz support : ${with_lzma}
470 libstdc++ demangle support : ${enable_demangler}
471 File textrel check : ${enable_textrelcheck}
472 Symbol versioning : ${enable_symbol_versioning}
474 NOT RECOMMENDED FEATURES (should all be no)
475 Experimental thread safety : ${use_locks}
478 Deterministic archives by default : ${default_ar_deterministic}
479 Native language support : ${USE_NLS}
481 EXTRA TEST FEATURES (used with make check)
482 have bunzip2 installed (required) : ${HAVE_BUNZIP2}
483 debug branch prediction : ${use_debugpred}
484 gprof support : ${use_gprof}
485 gcov support : ${use_gcov}
486 run all tests under valgrind : ${use_valgrind}
487 gcc undefined behaviour sanitizer : ${use_undefined}
488 use rpath in tests : ${tests_use_rpath}
489 test biarch : ${utrace_cv_cc_biarch}