1 dnl Process this file with autoconf to produce a configure script.
2 dnl Configure input file for elfutils. -*-autoconf-*-
4 dnl Copyright (C) 1996-2018 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],[0.177],[https://sourceware.org/bugzilla],[elfutils],[http://elfutils.org/])
22 dnl Workaround for older autoconf < 2.64
23 m4_ifndef([AC_PACKAGE_URL],
24 [AC_DEFINE([PACKAGE_URL], ["http://elfutils.org/"],
25 [Define to home page for this package])
26 AC_SUBST([PACKAGE_URL], ["http://elfutils.org/"])])
28 # We want eu- as default program prefix if none was given by the user.
29 # But if the user explicitly provided --program-prefix="" then pretend
30 # it wasn't set at all (NONE). We want to test this really early before
31 # configure has a chance to use the value.
33 if test "x$program_prefix" = "xNONE"; then
34 AC_MSG_NOTICE([No --program-prefix given, using "eu-"])
36 elif test "x$program_prefix" = "x"; then
37 AC_MSG_NOTICE([Using no program-prefix])
41 AC_CONFIG_AUX_DIR([config])
42 AC_CONFIG_FILES([config/Makefile])
44 AC_COPYRIGHT([Copyright (C) 1996-2018 The elfutils developers.])
45 AC_PREREQ(2.63) dnl Minimum Autoconf version required.
47 dnl We use GNU make extensions; automake 1.10 defaults to -Wportability.
48 AM_INIT_AUTOMAKE([gnits 1.11 -Wno-portability dist-bzip2 no-dist-gzip parallel-tests])
51 AM_SILENT_RULES([yes])
53 AC_CONFIG_SRCDIR([libelf/libelf.h])
54 AC_CONFIG_FILES([Makefile])
55 AC_CONFIG_HEADERS([config.h])
57 AC_CONFIG_MACRO_DIR([m4])
58 AC_CONFIG_FILES([m4/Makefile])
60 dnl The RPM spec file. We substitute a few values in the file.
61 AC_CONFIG_FILES([elfutils.spec:config/elfutils.spec.in])
66 AC_ARG_ENABLE(deterministic-archives,
67 [AS_HELP_STRING([--enable-deterministic-archives],
68 [ar and ranlib default to -D behavior])], [
69 if test "${enableval}" = no; then
70 default_ar_deterministic=false
72 default_ar_deterministic=true
73 fi], [default_ar_deterministic=false])
74 AC_DEFINE_UNQUOTED(DEFAULT_AR_DETERMINISTIC, $default_ar_deterministic,
75 [Should ar and ranlib use -D behavior by default?])
77 AC_ARG_ENABLE([thread-safety],
78 AS_HELP_STRING([--enable-thread-safety],
79 [enable thread safety of libraries EXPERIMENTAL]),
80 use_locks=$enableval, use_locks=no)
81 AM_CONDITIONAL(USE_LOCKS, test "$use_locks" = yes)
82 AS_IF([test "$use_locks" = yes], [AC_DEFINE(USE_LOCKS)])
83 AS_IF([test "$use_locks" = yes],
84 [AC_MSG_WARN([thread-safety is EXPERIMENTAL tests might fail.])])
86 AH_TEMPLATE([USE_LOCKS], [Defined if libraries should be thread-safe.])
92 # Only available since automake 1.12
93 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
94 AC_CHECK_TOOL([READELF], [readelf])
95 AC_CHECK_TOOL([NM], [nm])
97 # We use -std=gnu99 but have explicit checks for some language constructs
98 # and GNU extensions since some compilers claim GNU99 support, but don't
99 # really support all language extensions. In particular we need
100 # Mixed Declarations and Code
101 # https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
103 # https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
104 # Arrays of Variable Length
105 # https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
106 AC_CACHE_CHECK([for gcc with GNU99 support], ac_cv_c99, [dnl
108 CFLAGS="$CFLAGS -std=gnu99"
109 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
112 for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
115 double bar (double a, double b)
117 double square (double z) { return z * z; }
118 return square (a) + square (b);
123 struct S { int x[[n]]; };
125 ac_cv_c99=yes, ac_cv_c99=no)
126 CFLAGS="$old_CFLAGS"])
127 AS_IF([test "x$ac_cv_c99" != xyes],
128 AC_MSG_ERROR([gcc with GNU99 support required]))
130 AC_CACHE_CHECK([whether gcc supports __attribute__((visibility()))],
131 ac_cv_visibility, [dnl
132 save_CFLAGS="$CFLAGS"
133 CFLAGS="$save_CFLAGS -Werror"
134 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
135 int __attribute__((visibility("hidden")))
139 }])], ac_cv_visibility=yes, ac_cv_visibility=no)
140 CFLAGS="$save_CFLAGS"])
141 if test "$ac_cv_visibility" = "yes"; then
142 AC_DEFINE([HAVE_VISIBILITY], [1],
143 [Defined if __attribute__((visibility())) is supported])
146 AC_CACHE_CHECK([whether gcc supports __attribute__((gcc_struct))],
147 ac_cv_gcc_struct, [dnl
148 save_CFLAGS="$CFLAGS"
149 CFLAGS="$save_CFLAGS -Werror"
150 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
151 struct test { int x; } __attribute__((gcc_struct));
152 ])], ac_cv_gcc_struct=yes, ac_cv_gcc_struct=no)
153 CFLAGS="$save_CFLAGS"])
154 if test "$ac_cv_gcc_struct" = "yes"; then
155 AC_DEFINE([HAVE_GCC_STRUCT], [1],
156 [Defined if __attribute__((gcc_struct)) is supported])
159 AC_CACHE_CHECK([whether gcc supports -fPIC], ac_cv_fpic, [dnl
160 save_CFLAGS="$CFLAGS"
161 CFLAGS="$save_CFLAGS -fPIC -Werror"
162 AC_COMPILE_IFELSE([AC_LANG_SOURCE()], ac_cv_fpic=yes, ac_cv_fpic=no)
163 CFLAGS="$save_CFLAGS"
165 if test "$ac_cv_fpic" = "yes"; then
170 AC_SUBST([fpic_CFLAGS])
172 AC_CACHE_CHECK([whether gcc supports -fPIE], ac_cv_fpie, [dnl
173 save_CFLAGS="$CFLAGS"
174 CFLAGS="$save_CFLAGS -fPIE -Werror"
175 AC_COMPILE_IFELSE([AC_LANG_SOURCE()], ac_cv_fpie=yes, ac_cv_fpie=no)
176 CFLAGS="$save_CFLAGS"
178 if test "$ac_cv_fpie" = "yes"; then
183 AC_SUBST([fpie_CFLAGS])
185 dso_LDFLAGS="-shared"
187 ZDEFS_LDFLAGS="-Wl,-z,defs"
188 AC_CACHE_CHECK([whether gcc supports $ZDEFS_LDFLAGS], ac_cv_zdefs, [dnl
189 save_LDFLAGS="$LDFLAGS"
190 LDFLAGS="$ZDEFS_LDFLAGS $save_LDFLAGS"
191 AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_cv_zdefs=yes, ac_cv_zdefs=no)
192 LDFLAGS="$save_LDFLAGS"
194 if test "$ac_cv_zdefs" = "yes"; then
195 dso_LDFLAGS="$dso_LDFLAGS $ZDEFS_LDFLAGS"
198 ZRELRO_LDFLAGS="-Wl,-z,relro"
199 AC_CACHE_CHECK([whether gcc supports $ZRELRO_LDFLAGS], ac_cv_zrelro, [dnl
200 save_LDFLAGS="$LDFLAGS"
201 LDFLAGS="$ZRELRO_LDFLAGS $save_LDFLAGS"
202 AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_cv_zrelro=yes, ac_cv_zrelro=no)
203 LDFLAGS="$save_LDFLAGS"
205 if test "$ac_cv_zrelro" = "yes"; then
206 dso_LDFLAGS="$dso_LDFLAGS $ZRELRO_LDFLAGS"
209 AC_SUBST([dso_LDFLAGS])
211 AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl
212 # Use the same flags that we use for our DSOs, so the test is representative.
213 # Some old compiler/linker/libc combinations fail some ways and not others.
214 save_CFLAGS="$CFLAGS"
215 save_LDFLAGS="$LDFLAGS"
216 CFLAGS="$fpic_CFLAGS $CFLAGS"
217 LDFLAGS="$dso_LDFLAGS $LDFLAGS"
219 AC_LANG_PROGRAM([[#include <stdlib.h>
221 static __thread int a; int foo (int b) { return a + b; }]],
222 [[exit (foo (0));]])],
223 ac_cv_tls=yes, ac_cv_tls=no)
224 CFLAGS="$save_CFLAGS"
225 LDFLAGS="$save_LDFLAGS"])
226 AS_IF([test "x$ac_cv_tls" != xyes],
227 AC_MSG_ERROR([__thread support required]))
229 dnl This test must come as early as possible after the compiler configuration
230 dnl tests, because the choice of the file model can (in principle) affect
231 dnl whether functions and headers are available, whether they work, etc.
234 dnl Older glibc had a broken fts that didn't work with Large File Systems.
235 dnl We want the version that can handler LFS, but include workaround if we
236 dnl get a bad one. Add define to CFLAGS (not AC_DEFINE it) since we need to
237 dnl check it before including config.h (which might define _FILE_OFFSET_BITS).
238 AC_CACHE_CHECK([whether fts.h is bad when included (with LFS)], ac_cv_bad_fts,
239 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <fts.h>]])],
240 ac_cv_bad_fts=no, ac_cv_bad_fts=yes)])
241 AS_IF([test "x$ac_cv_bad_fts" = "xyes"], [CFLAGS="$CFLAGS -DBAD_FTS=1"])
243 # See if we can add -D_FORTIFY_SOURCE=2. Don't do it if it is already
244 # (differently) defined or if it generates warnings/errors because we
245 # don't use the right optimisation level (string.h will warn about that).
246 AC_MSG_CHECKING([whether to add -D_FORTIFY_SOURCE=2 to CFLAGS])
248 *-D_FORTIFY_SOURCE=2*)
249 AC_MSG_RESULT([no, already there])
252 save_CFLAGS="$CFLAGS"
253 CFLAGS="-D_FORTIFY_SOURCE=2 -Werror $CFLAGS"
254 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
256 int main() { return 0; }
257 ]])], [ AC_MSG_RESULT([yes])
258 CFLAGS="-D_FORTIFY_SOURCE=2 $save_CFLAGS" ],
259 [ AC_MSG_RESULT([no])
260 CFLAGS="$save_CFLAGS"])
264 dnl enable debugging of branch prediction.
265 AC_ARG_ENABLE([debugpred],
266 AS_HELP_STRING([--enable-debugpred],[build binaries with support to debug branch prediction]),
267 [use_debugpred=$enableval], [use_debugpred=no])
268 case $use_debugpred in
269 yes) use_debugpred_val=1 ;;
270 *) use_debugpred_val=0 ;;
272 AC_SUBST([DEBUGPRED], $use_debugpred_val)
274 dnl Enable gprof suport.
275 AC_ARG_ENABLE([gprof],
276 AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=$enableval], [use_gprof=no])
277 if test "$use_gprof" = yes; then
279 LDFLAGS="$LDFLAGS -pg"
281 AM_CONDITIONAL(GPROF, test "$use_gprof" = yes)
283 # Enable gcov suport.
284 AC_ARG_ENABLE([gcov],
285 AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=$enableval], [use_gcov=no])
286 if test "$use_gcov" = yes; then
287 CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
288 LDFLAGS="$LDFLAGS -fprofile-arcs"
290 AM_CONDITIONAL(GCOV, test "$use_gcov" = yes)
292 AC_ARG_ENABLE([sanitize-undefined],
293 AS_HELP_STRING([--enable-sanitize-undefined],
294 [Use gcc undefined behaviour sanitizer]),
295 [use_undefined=$enableval], [use_undefined=no])
296 if test "$use_undefined" = yes; then
298 old_CXXFLAGS="$CXXFLAGS"
299 # We explicitly use unaligned access when possible (see ALLOW_UNALIGNED)
300 # We want to fail immediately on first error, don't try to recover.
301 CFLAGS="$CFLAGS -fsanitize=undefined -fno-sanitize-recover"
302 CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover"
303 AC_LINK_IFELSE([AC_LANG_SOURCE([int main (int argc, char **argv) { return 0; }])], use_undefined=yes, use_undefined=no)
304 AS_IF([test "x$use_undefined" != xyes],
305 AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
306 CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
308 case $use_undefined in
309 yes) check_undefined_val=1 ;;
310 *) check_undefined_val=0 ;;
312 AC_DEFINE_UNQUOTED(CHECK_UNDEFINED, $check_undefined_val,
313 [Building with -fsanitize=undefined or not])
315 AC_ARG_ENABLE([valgrind],
316 AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
317 [use_valgrind=$enableval], [use_valgrind=no])
318 if test "$use_valgrind" = yes; then
319 AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
320 if test "$HAVE_VALGRIND" = "no"; then
321 AC_MSG_ERROR([valgrind not found])
324 AM_CONDITIONAL(USE_VALGRIND, test "$use_valgrind" = yes)
326 AC_ARG_ENABLE([install-elfh],
327 AS_HELP_STRING([--enable-install-elfh],[install elf.h in include dir]),
328 [install_elfh=$enableval], [install_elfh=no])
329 AM_CONDITIONAL(INSTALL_ELFH, test "$install_elfh" = yes)
331 AM_CONDITIONAL(BUILD_STATIC, [dnl
332 test "$use_gprof" = yes -o "$use_gcov" = yes])
334 AC_ARG_ENABLE([tests-rpath],
335 AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
336 [tests_use_rpath=$enableval], [tests_use_rpath=no])
337 AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
339 dnl zlib is mandatory.
342 eu_ZIPLIB(zlib,ZLIB,z,gzdirect,gzip)
343 AS_IF([test "x$with_zlib" = xno], [AC_MSG_ERROR([zlib not found but is required])])
346 dnl Test for bzlib and xz/lzma, gives BZLIB/LZMALIB .am
347 dnl conditional and config.h USE_BZLIB/USE_LZMALIB #define.
350 eu_ZIPLIB(bzlib,BZLIB,bz2,BZ2_bzdopen,bzip2)
351 # We need this since bzip2 doesn't have a pkgconfig file.
354 eu_ZIPLIB(lzma,LZMA,lzma,lzma_auto_decoder,[LZMA (xz)])
355 AS_IF([test "x$with_lzma" = xyes], [LIBLZMA="liblzma"], [LIBLZMA=""])
361 AC_CHECK_DECLS([memrchr, rawmemchr],[],[],
363 #include <string.h>])
364 AC_CHECK_DECLS([powerof2],[],[],[#include <sys/param.h>])
365 AC_CHECK_DECLS([mempcpy],[],[],
367 #include <string.h>])
369 AC_CHECK_FUNCS([process_vm_readv])
371 AC_CHECK_LIB([stdc++], [__cxa_demangle], [dnl
372 AC_DEFINE([USE_DEMANGLE], [1], [Defined if demangling is enabled])])
373 AM_CONDITIONAL(DEMANGLE, test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes")
374 AS_IF([test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes"],
375 [enable_demangler=yes],[enable_demangler=no])
377 AC_ARG_ENABLE([textrelcheck],
378 AS_HELP_STRING([--disable-textrelcheck],
379 [Disable textrelcheck being a fatal error]))
380 AM_CONDITIONAL(FATAL_TEXTREL, [test "x$enable_textrelcheck" != "xno"])
381 AS_IF([test "x$enable_textrelcheck" != "xno"],
382 [enable_textrelcheck=yes],[enable_textrelcheck=no])
384 AC_ARG_ENABLE([symbol-versioning],
385 AS_HELP_STRING([--disable-symbol-versioning],
386 [Disable symbol versioning in shared objects]))
388 AC_CACHE_CHECK([whether symbol versioning is supported], ac_cv_symbol_versioning, [dnl
389 AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
390 #define NEW_VERSION(name, version) \
391 asm (".symver " #name "," #name "@@@" #version);
392 int foo(int x) { return x + 1; }
393 NEW_VERSION (foo, ELFUTILS_12.12)
394 ])], ac_cv_symbol_versioning=yes, ac_cv_symbol_versioning=no)])
395 if test "$ac_cv_symbol_versioning" = "no"; then
396 if test "x$enable_symbol_versioning" != "xno"; then
397 AC_MSG_ERROR([Symbol versioning is not supported.
398 Use --disable-symbol-versioning to build without.])
402 AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"])
403 AS_IF([test "x$enable_symbol_versioning" = "xno"],
404 [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.])
405 enable_symbol_versioning=no],[enable_symbol_versioning=yes])
407 AC_CACHE_CHECK([whether gcc accepts -Wstack-usage], ac_cv_stack_usage, [dnl
409 CFLAGS="$CFLAGS -Wstack-usage=262144 -Werror"
410 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
411 ac_cv_stack_usage=yes, ac_cv_stack_usage=no)
412 CFLAGS="$old_CFLAGS"])
413 AM_CONDITIONAL(ADD_STACK_USAGE_WARNING, [test "x$ac_cv_stack_usage" != "xno"])
415 # -Wlogical-op was too fragile in the past, make sure we get a sane one.
416 AC_CACHE_CHECK([whether gcc has a sane -Wlogical-op], ac_cv_logical_op, [dnl
418 CFLAGS="$CFLAGS -Wlogical-op -Werror"
419 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
421 int f (int r, int f) { return (r && (FLAG || (FLAG & f))); }])],
422 ac_cv_logical_op=yes, ac_cv_logical_op=no)
423 CFLAGS="$old_CFLAGS"])
424 AM_CONDITIONAL(SANE_LOGICAL_OP_WARNING,
425 [test "x$ac_cv_logical_op" != "xno"])
427 # -Wduplicated-cond was added by GCC6
428 AC_CACHE_CHECK([whether gcc accepts -Wduplicated-cond], ac_cv_duplicated_cond, [dnl
430 CFLAGS="$CFLAGS -Wduplicated-cond -Werror"
431 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
432 ac_cv_duplicated_cond=yes, ac_cv_duplicated_cond=no)
433 CFLAGS="$old_CFLAGS"])
434 AM_CONDITIONAL(HAVE_DUPLICATED_COND_WARNING,
435 [test "x$ac_cv_duplicated_cond" != "xno"])
437 # -Wnull-dereference was added by GCC6
438 AC_CACHE_CHECK([whether gcc accepts -Wnull-dereference], ac_cv_null_dereference, [dnl
440 CFLAGS="$CFLAGS -Wnull-dereference -Werror"
441 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
442 ac_cv_null_dereference=yes, ac_cv_null_dereference=no)
443 CFLAGS="$old_CFLAGS"])
444 AM_CONDITIONAL(HAVE_NULL_DEREFERENCE_WARNING,
445 [test "x$ac_cv_null_dereference" != "xno"])
447 # -Wimplicit-fallthrough was added by GCC7
448 AC_CACHE_CHECK([whether gcc accepts -Wimplicit-fallthrough], ac_cv_implicit_fallthrough, [dnl
450 CFLAGS="$CFLAGS -Wimplicit-fallthrough -Werror"
451 AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
452 ac_cv_implicit_fallthrough=yes, ac_cv_implicit_fallthrough=no)
453 CFLAGS="$old_CFLAGS"])
454 AM_CONDITIONAL(HAVE_IMPLICIT_FALLTHROUGH_WARNING,
455 [test "x$ac_cv_implicit_fallthrough" != "xno"])
457 # Assume the fallthrough attribute is supported if -Wimplict-fallthrough is supported
458 if test "$ac_cv_implicit_fallthrough" = "yes"; then
459 AC_DEFINE([HAVE_FALLTHROUGH], [1],
460 [Defined if __attribute__((fallthrough)) is supported])
463 dnl Check if we have argp available from our libc
467 [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,&argv,0,0,0); return 0;]
469 [libc_has_argp="true"],
470 [libc_has_argp="false"]
473 dnl If our libc doesn't provide argp, then test for libargp
474 if test "$libc_has_argp" = "false" ; then
475 AC_MSG_WARN("libc does not have argp")
476 AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
478 if test "$have_argp" = "false"; then
479 AC_MSG_ERROR("no libargp found")
486 AC_SUBST([argp_LDADD])
488 dnl The directories with content.
491 AC_CONFIG_FILES([doc/Makefile])
494 AC_CONFIG_FILES([lib/Makefile])
497 AC_CONFIG_FILES([libelf/Makefile])
499 dnl Higher-level ELF support library.
500 AC_CONFIG_FILES([libebl/Makefile])
502 dnl DWARF-ELF Lower-level Functions support library.
503 AC_CONFIG_FILES([libdwelf/Makefile])
506 AC_CONFIG_FILES([libdw/Makefile])
508 dnl Higher-level DWARF support library.
509 AC_CONFIG_FILES([libdwfl/Makefile])
511 dnl CPU handling library.
512 AC_CONFIG_FILES([libcpu/Makefile])
514 dnl Assembler library.
515 AM_CONDITIONAL(HAVE_LIBASM, true)dnl Used in tests/Makefile.am, which see.
516 AC_CONFIG_FILES([libasm/Makefile])
518 dnl CPU-specific backend libraries.
519 AC_CONFIG_FILES([backends/Makefile])
522 AC_CONFIG_FILES([src/Makefile po/Makefile.in])
525 AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
526 AC_CONFIG_FILES([tests/Makefile])
529 AC_CONFIG_FILES([config/libelf.pc config/libdw.pc])
531 # Get the definitions necessary to create the Makefiles in the po
532 # subdirectories. This is a small subset of the gettext rules.
533 AC_SUBST(USE_NLS, yes)
536 dnl Appended to the config.h file.
537 dnl We hide all kinds of configuration magic in lib/eu-config.h.
538 AH_BOTTOM([#include <eu-config.h>])
540 dnl Version compatibility header.
541 AC_CONFIG_FILES([version.h:config/version.h.in])
542 AC_SUBST([eu_version])
544 # 1.234<whatever> -> 1234<whatever>
545 case "$PACKAGE_VERSION" in
546 [[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
547 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
549 case "$eu_version" in
551 # 1234.567 -> "1234", "567"
552 eu_extra_version="${eu_version#*.}"
553 eu_version="${eu_version%%.*}"
554 case "$eu_extra_version" in
555 [[0-9]][[0-9]][[0-9]]) ;;
556 [[0-9]][[0-9]]) eu_extra_version="${eu_extra_version}0" ;;
557 [[0-9]]) eu_extra_version="${eu_extra_version}00" ;;
558 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
566 case "$eu_version" in
567 0[[0-9]][[0-9]][[0-9]]) eu_version="${eu_version#0}$eu_extra_version" ;;
568 [[0-9]][[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}$eu_extra_version" ;;
569 [[0-9]][[0-9]][[0-9]]) eu_version="${eu_version}0$eu_extra_version" ;;
570 [[0-9]][[0-9]]) eu_version="${eu_version}00$eu_extra_version";;
571 *) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
574 # Round up to the next release API (x.y) version.
575 eu_version=$(( (eu_version + 999) / 1000 ))
577 dnl Unique ID for this build.
578 MODVERSION="Build for ${eu_version} ${ac_cv_build}"
579 AC_SUBST([MODVERSION])
580 AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
581 AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
583 AC_CHECK_SIZEOF(long)
585 # On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
586 # of the user_regs_struct from sys/user.h. They are structurally the same
587 # but we get either one or the other.
588 AC_CHECK_TYPE([struct user_regs_struct],
589 [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
590 [[#include <sys/ptrace.h>]
591 [#include <sys/time.h>]
592 [#include <sys/user.h>]])
593 if test "$sys_user_has_user_regs" = "yes"; then
594 AC_DEFINE(HAVE_SYS_USER_REGS, 1,
595 [Define to 1 if <sys/user.h> defines struct user_regs_struct])
598 # On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
599 # Likewise in a 32-bit build on a host where $CC -m64 works.
601 # `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
602 CC_BIARCH="$CC $utrace_biarch"
603 AC_SUBST([CC_BIARCH])
605 # In maintainer mode we really need flex and bison.
606 # Otherwise we really need a release dir with maintainer files generated.
607 if test "x$enable_maintainer_mode" = xyes; then
608 AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
609 if test "$HAVE_FLEX" = "no"; then
610 AC_MSG_ERROR([flex needed in maintainer mode])
612 AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
613 if test "$HAVE_BISON" = "no"; then
614 AC_MSG_ERROR([bison needed in maintainer mode])
616 AC_CHECK_PROG(HAVE_GAWK, gawk, yes, no)
617 if test "$HAVE_GAWK" = "no"; then
618 AC_MSG_ERROR([gawk needed in maintainer mode])
621 if test ! -f ${srcdir}/libdw/known-dwarf.h; then
622 AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
626 # The testfiles are all compressed, we need bunzip2 when running make check
627 AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
628 if test "$HAVE_BUNZIP2" = "no"; then
629 AC_MSG_WARN([No bunzip2, needed to run make check])
635 =====================================================================
636 elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
637 =====================================================================
640 Program prefix ("eu-" recommended) : ${program_prefix}
641 Source code location : ${srcdir}
642 Maintainer mode : ${enable_maintainer_mode}
643 build arch : ${ac_cv_build}
645 RECOMMENDED FEATURES (should all be yes)
646 gzip support : ${with_zlib}
647 bzip2 support : ${with_bzlib}
648 lzma/xz support : ${with_lzma}
649 libstdc++ demangle support : ${enable_demangler}
650 File textrel check : ${enable_textrelcheck}
651 Symbol versioning : ${enable_symbol_versioning}
653 NOT RECOMMENDED FEATURES (should all be no)
654 Experimental thread safety : ${use_locks}
655 install elf.h : ${install_elfh}
658 Deterministic archives by default : ${default_ar_deterministic}
659 Native language support : ${USE_NLS}
661 EXTRA TEST FEATURES (used with make check)
662 have bunzip2 installed (required) : ${HAVE_BUNZIP2}
663 debug branch prediction : ${use_debugpred}
664 gprof support : ${use_gprof}
665 gcov support : ${use_gcov}
666 run all tests under valgrind : ${use_valgrind}
667 gcc undefined behaviour sanitizer : ${use_undefined}
668 use rpath in tests : ${tests_use_rpath}
669 test biarch : ${utrace_cv_cc_biarch}
672 if test "$install_elfh" = yes; then
673 if test "${prefix}" = "/usr/local" -o "${prefix}" = "/usr"; then
674 AC_MSG_WARN([installing elf.h in ${includedir} might conflict with glibc/system elf.h])