dnl Process this file with autoconf to produce a configure script.
dnl Configure input file for elfutils. -*-autoconf-*-
dnl
-dnl Copyright (C) 1996-2011 Red Hat, Inc.
+dnl Copyright (C) 1996-2018 Red Hat, Inc.
dnl
-dnl This program is free software; you can redistribute it and/or modify
-dnl it under the terms of the GNU General Public License as published by
-dnl the Free Software Foundation, version 2.
+dnl This file is part of elfutils.
dnl
-dnl This program is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-dnl GNU General Public License for more details.
+dnl This file is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3 of the License, or
+dnl (at your option) any later version.
dnl
-dnl You should have received a copy of the GNU General Public License
-dnl along with this program; if not, write to the Free Software Foundation,
-dnl Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+dnl elfutils is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+dnl GNU General Public License for more details.
dnl
-AC_INIT([Red Hat elfutils],[0.151],[http://bugzilla.redhat.com/bugzilla/],[elfutils])
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
+AC_INIT([elfutils],[0.177],[https://sourceware.org/bugzilla],[elfutils],[http://elfutils.org/])
+
+dnl Workaround for older autoconf < 2.64
+m4_ifndef([AC_PACKAGE_URL],
+ [AC_DEFINE([PACKAGE_URL], ["http://elfutils.org/"],
+ [Define to home page for this package])
+ AC_SUBST([PACKAGE_URL], ["http://elfutils.org/"])])
+
+# We want eu- as default program prefix if none was given by the user.
+# But if the user explicitly provided --program-prefix="" then pretend
+# it wasn't set at all (NONE). We want to test this really early before
+# configure has a chance to use the value.
+
+if test "x$program_prefix" = "xNONE"; then
+ AC_MSG_NOTICE([No --program-prefix given, using "eu-"])
+ program_prefix="eu-"
+elif test "x$program_prefix" = "x"; then
+ AC_MSG_NOTICE([Using no program-prefix])
+ program_prefix=NONE
+fi
AC_CONFIG_AUX_DIR([config])
AC_CONFIG_FILES([config/Makefile])
-AC_COPYRIGHT([Copyright (C) 1996-2010 Red Hat, Inc.])
+AC_COPYRIGHT([Copyright (C) 1996-2018 The elfutils developers.])
AC_PREREQ(2.63) dnl Minimum Autoconf version required.
dnl We use GNU make extensions; automake 1.10 defaults to -Wportability.
-AM_INIT_AUTOMAKE([gnits 1.8 -Wno-portability dist-bzip2 no-dist-gzip])
+AM_INIT_AUTOMAKE([gnits 1.11 -Wno-portability dist-bzip2 no-dist-gzip parallel-tests])
AM_MAINTAINER_MODE
-dnl Unique ID for this build.
-MODVERSION="Build on $(hostname) $(date +%FT%R:%S%z)"
-AC_SUBST([MODVERSION])
-AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
-AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
+AM_SILENT_RULES([yes])
AC_CONFIG_SRCDIR([libelf/libelf.h])
AC_CONFIG_FILES([Makefile])
AC_CANONICAL_HOST
+AC_ARG_ENABLE(deterministic-archives,
+[AS_HELP_STRING([--enable-deterministic-archives],
+ [ar and ranlib default to -D behavior])], [
+if test "${enableval}" = no; then
+ default_ar_deterministic=false
+else
+ default_ar_deterministic=true
+fi], [default_ar_deterministic=false])
+AC_DEFINE_UNQUOTED(DEFAULT_AR_DETERMINISTIC, $default_ar_deterministic,
+ [Should ar and ranlib use -D behavior by default?])
+
AC_ARG_ENABLE([thread-safety],
-AS_HELP_STRING([--enable-thread-safety], [enable thread safety of libraries]),
-use_tls=locks, use_locks=no)
+AS_HELP_STRING([--enable-thread-safety],
+ [enable thread safety of libraries EXPERIMENTAL]),
+ use_locks=$enableval, use_locks=no)
AM_CONDITIONAL(USE_LOCKS, test "$use_locks" = yes)
AS_IF([test "$use_locks" = yes], [AC_DEFINE(USE_LOCKS)])
+AS_IF([test "$use_locks" = yes],
+ [AC_MSG_WARN([thread-safety is EXPERIMENTAL tests might fail.])])
AH_TEMPLATE([USE_LOCKS], [Defined if libraries should be thread-safe.])
-dnl Add all the languages for which translations are available.
-ALL_LINGUAS="de es ja pl uk"
-
AC_PROG_CC
AC_PROG_RANLIB
AC_PROG_YACC
AM_PROG_LEX
-
-AC_CACHE_CHECK([for gcc with C99 support], ac_cv_c99, [dnl
+# Only available since automake 1.12
+m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
+AC_CHECK_TOOL([READELF], [readelf])
+AC_CHECK_TOOL([NM], [nm])
+
+# We use -std=gnu99 but have explicit checks for some language constructs
+# and GNU extensions since some compilers claim GNU99 support, but don't
+# really support all language extensions. In particular we need
+# Mixed Declarations and Code
+# https://gcc.gnu.org/onlinedocs/gcc/Mixed-Declarations.html
+# Nested Functions
+# https://gcc.gnu.org/onlinedocs/gcc/Nested-Functions.html
+# Arrays of Variable Length
+# https://gcc.gnu.org/onlinedocs/gcc/Variable-Length.html
+AC_CACHE_CHECK([for gcc with GNU99 support], ac_cv_c99, [dnl
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -std=gnu99"
-AC_COMPILE_IFELSE([dnl
-int foo (int a) { for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; }],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
+int foo (int a)
+{
+ for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
+}
+
+double bar (double a, double b)
+{
+ double square (double z) { return z * z; }
+ return square (a) + square (b);
+}
+
+void baz (int n)
+{
+ struct S { int x[[n]]; };
+}])],
ac_cv_c99=yes, ac_cv_c99=no)
CFLAGS="$old_CFLAGS"])
AS_IF([test "x$ac_cv_c99" != xyes],
- AC_MSG_ERROR([gcc with C99 support required]))
+ AC_MSG_ERROR([gcc with GNU99 support required]))
+
+AC_CACHE_CHECK([whether gcc supports __attribute__((visibility()))],
+ ac_cv_visibility, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="$save_CFLAGS -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
+int __attribute__((visibility("hidden")))
+foo (int a)
+{
+ return a;
+}])], ac_cv_visibility=yes, ac_cv_visibility=no)
+CFLAGS="$save_CFLAGS"])
+if test "$ac_cv_visibility" = "yes"; then
+ AC_DEFINE([HAVE_VISIBILITY], [1],
+ [Defined if __attribute__((visibility())) is supported])
+fi
+
+AC_CACHE_CHECK([whether gcc supports __attribute__((gcc_struct))],
+ ac_cv_gcc_struct, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="$save_CFLAGS -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
+struct test { int x; } __attribute__((gcc_struct));
+])], ac_cv_gcc_struct=yes, ac_cv_gcc_struct=no)
+CFLAGS="$save_CFLAGS"])
+if test "$ac_cv_gcc_struct" = "yes"; then
+ AC_DEFINE([HAVE_GCC_STRUCT], [1],
+ [Defined if __attribute__((gcc_struct)) is supported])
+fi
+
+AC_CACHE_CHECK([whether gcc supports -fPIC], ac_cv_fpic, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="$save_CFLAGS -fPIC -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE()], ac_cv_fpic=yes, ac_cv_fpic=no)
+CFLAGS="$save_CFLAGS"
+])
+if test "$ac_cv_fpic" = "yes"; then
+ fpic_CFLAGS="-fPIC"
+else
+ fpic_CFLAGS=""
+fi
+AC_SUBST([fpic_CFLAGS])
+
+AC_CACHE_CHECK([whether gcc supports -fPIE], ac_cv_fpie, [dnl
+save_CFLAGS="$CFLAGS"
+CFLAGS="$save_CFLAGS -fPIE -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE()], ac_cv_fpie=yes, ac_cv_fpie=no)
+CFLAGS="$save_CFLAGS"
+])
+if test "$ac_cv_fpie" = "yes"; then
+ fpie_CFLAGS="-fPIE"
+else
+ fpie_CFLAGS=""
+fi
+AC_SUBST([fpie_CFLAGS])
+
+dso_LDFLAGS="-shared"
+
+ZDEFS_LDFLAGS="-Wl,-z,defs"
+AC_CACHE_CHECK([whether gcc supports $ZDEFS_LDFLAGS], ac_cv_zdefs, [dnl
+save_LDFLAGS="$LDFLAGS"
+LDFLAGS="$ZDEFS_LDFLAGS $save_LDFLAGS"
+AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_cv_zdefs=yes, ac_cv_zdefs=no)
+LDFLAGS="$save_LDFLAGS"
+])
+if test "$ac_cv_zdefs" = "yes"; then
+ dso_LDFLAGS="$dso_LDFLAGS $ZDEFS_LDFLAGS"
+fi
+
+ZRELRO_LDFLAGS="-Wl,-z,relro"
+AC_CACHE_CHECK([whether gcc supports $ZRELRO_LDFLAGS], ac_cv_zrelro, [dnl
+save_LDFLAGS="$LDFLAGS"
+LDFLAGS="$ZRELRO_LDFLAGS $save_LDFLAGS"
+AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_cv_zrelro=yes, ac_cv_zrelro=no)
+LDFLAGS="$save_LDFLAGS"
+])
+if test "$ac_cv_zrelro" = "yes"; then
+ dso_LDFLAGS="$dso_LDFLAGS $ZRELRO_LDFLAGS"
+fi
+
+AC_SUBST([dso_LDFLAGS])
AC_CACHE_CHECK([for __thread support], ac_cv_tls, [dnl
# Use the same flags that we use for our DSOs, so the test is representative.
# Some old compiler/linker/libc combinations fail some ways and not others.
save_CFLAGS="$CFLAGS"
save_LDFLAGS="$LDFLAGS"
-CFLAGS="-fpic $CFLAGS"
-LDFLAGS="-shared -Wl,-z,defs,-z,relro $LDFLAGS"
+CFLAGS="$fpic_CFLAGS $CFLAGS"
+LDFLAGS="$dso_LDFLAGS $LDFLAGS"
AC_LINK_IFELSE([dnl
-AC_LANG_PROGRAM([[#undef __thread
+AC_LANG_PROGRAM([[#include <stdlib.h>
+#undef __thread
static __thread int a; int foo (int b) { return a + b; }]],
[[exit (foo (0));]])],
ac_cv_tls=yes, ac_cv_tls=no)
AS_IF([test "x$ac_cv_tls" != xyes],
AC_MSG_ERROR([__thread support required]))
+dnl Before 4.9 gcc doesn't ship stdatomic.h, but the nessesary atomics are
+dnl available by (at least) 4.7. So if the system doesn't have a stdatomic.h we
+dnl fall back on one copied from FreeBSD that handles the difference.
+AC_CACHE_CHECK([whether gcc provides stdatomic.h], ac_cv_has_stdatomic,
+ [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <stdatomic.h>]])],
+ ac_cv_has_stdatomic=yes, ac_cv_has_stdatomic=no)])
+AM_CONDITIONAL(HAVE_STDATOMIC_H, test "x$ac_cv_has_stdatomic" = xyes)
+AS_IF([test "x$ac_cv_has_stdatomic" = xyes], [AC_DEFINE(HAVE_STDATOMIC_H)])
+
+AH_TEMPLATE([HAVE_STDATOMIC_H], [Define to 1 if `stdatomic.h` is provided by the
+ system, 0 otherwise.])
+
dnl This test must come as early as possible after the compiler configuration
dnl tests, because the choice of the file model can (in principle) affect
dnl whether functions and headers are available, whether they work, etc.
AC_SYS_LARGEFILE
-dnl Enable the linker to be build as a native-only linker. By default it
-dnl can handle all architectures but this comes at a cost. A native
-dnl will be slightly faster, small, and has fewer dependencies.
-native_ld=no
-AC_ARG_ENABLE([generic],
-AS_HELP_STRING([--disable-generic], [do not build generic linker]), [dnl
-if test "$enable_generic" = no; then
- case "$host_cpu" in
- i?86)
- AC_DEFINE(NATIVE_ELF, 32)
- native_ld=yes
- base_cpu=i386
+dnl Older glibc had a broken fts that didn't work with Large File Systems.
+dnl We want the version that can handler LFS, but include workaround if we
+dnl get a bad one. Add define to CFLAGS (not AC_DEFINE it) since we need to
+dnl check it before including config.h (which might define _FILE_OFFSET_BITS).
+AC_CACHE_CHECK([whether fts.h is bad when included (with LFS)], ac_cv_bad_fts,
+ [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <fts.h>]])],
+ ac_cv_bad_fts=no, ac_cv_bad_fts=yes)])
+AS_IF([test "x$ac_cv_bad_fts" = "xyes"], [CFLAGS="$CFLAGS -DBAD_FTS=1"])
+
+# See if we can add -D_FORTIFY_SOURCE=2. Don't do it if it is already
+# (differently) defined or if it generates warnings/errors because we
+# don't use the right optimisation level (string.h will warn about that).
+AC_MSG_CHECKING([whether to add -D_FORTIFY_SOURCE=2 to CFLAGS])
+case "$CFLAGS" in
+ *-D_FORTIFY_SOURCE=2*)
+ AC_MSG_RESULT([no, already there])
;;
- *)
- AC_MSG_ERROR([no machine-specific linker for this configuration available])
- ;;
- esac
-fi])
-AH_TEMPLATE([NATIVE_ELF],
-[Define to 32 or 64 if a specific implementation is wanted.])
-AM_CONDITIONAL(NATIVE_LD, test "$native_ld" = yes)
-dnl The automake generated Makefile cannot deal with macros in the name
-dnl of files if at any time there is no such file, even if the filename
-dnl would not be used.
-AS_IF([test -z "$base_cpu"], [base_cpu=none])
-AC_SUBST(base_cpu)
-dnl Support to work around automake's inflexible dependency generation.
-dnl See src/Makefile.am for more information.
-AM_CONDITIONAL(NEVER, false)
-
-dnl Enable debugging via mudflap. This option will cause most libraries
-dnl to be built as archives which are statically linked into the applications.
-dnl All code, as far as possible, is compiled instrumented to catch all
-dnl the bugs valgrind is able to catch.
-use_mudflap=no
-AC_ARG_ENABLE([mudflap],
-AS_HELP_STRING([--enable-mudflap],
-[build binaries with mudflap instrumentation]), [dnl
-if test "x$enable_mudflap" = xyes; then
- # Check whether the compiler support -fmudflap.
- old_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -fmudflap"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[use_mudflap=yes],[use_mudflap=fail])
- CFLAGS="$old_CFLAGS"
-fi])
-if test "$use_mudflap" = fail; then
- AC_MSG_FAILURE([--enable-mudflap requires a compiler which understands this option])
-fi
-AM_CONDITIONAL(MUDFLAP, test "$use_mudflap" = yes)
+ *)
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="-D_FORTIFY_SOURCE=2 -Werror $CFLAGS"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #include <string.h>
+ int main() { return 0; }
+ ]])], [ AC_MSG_RESULT([yes])
+ CFLAGS="-D_FORTIFY_SOURCE=2 $save_CFLAGS" ],
+ [ AC_MSG_RESULT([no])
+ CFLAGS="$save_CFLAGS"])
+ ;;
+esac
dnl enable debugging of branch prediction.
-use_debugpred=0
AC_ARG_ENABLE([debugpred],
AS_HELP_STRING([--enable-debugpred],[build binaries with support to debug branch prediction]),
-[use_debugpred=1], [use_debugpred=0])
-AC_SUBST([DEBUGPRED], $use_debugpred)
+[use_debugpred=$enableval], [use_debugpred=no])
+case $use_debugpred in
+ yes) use_debugpred_val=1 ;;
+ *) use_debugpred_val=0 ;;
+esac
+AC_SUBST([DEBUGPRED], $use_debugpred_val)
dnl Enable gprof suport.
AC_ARG_ENABLE([gprof],
-AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=yes], [use_gprof=no])
+AS_HELP_STRING([--enable-gprof],[build binaries with gprof support]), [use_gprof=$enableval], [use_gprof=no])
if test "$use_gprof" = yes; then
CFLAGS="$CFLAGS -pg"
LDFLAGS="$LDFLAGS -pg"
# Enable gcov suport.
AC_ARG_ENABLE([gcov],
-AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=yes], [use_gcov=no])
+AS_HELP_STRING([--enable-gcov],[build binaries with gcov support]), [use_gcov=$enableval], [use_gcov=no])
if test "$use_gcov" = yes; then
CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
LDFLAGS="$LDFLAGS -fprofile-arcs"
fi
AM_CONDITIONAL(GCOV, test "$use_gcov" = yes)
+AC_ARG_ENABLE([sanitize-undefined],
+ AS_HELP_STRING([--enable-sanitize-undefined],
+ [Use gcc undefined behaviour sanitizer]),
+ [use_undefined=$enableval], [use_undefined=no])
+if test "$use_undefined" = yes; then
+ old_CFLAGS="$CFLAGS"
+ old_CXXFLAGS="$CXXFLAGS"
+ # We explicitly use unaligned access when possible (see ALLOW_UNALIGNED)
+ # We want to fail immediately on first error, don't try to recover.
+ CFLAGS="$CFLAGS -fsanitize=undefined -fno-sanitize-recover"
+ CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover"
+ AC_LINK_IFELSE([AC_LANG_SOURCE([int main (int argc, char **argv) { return 0; }])], use_undefined=yes, use_undefined=no)
+ AS_IF([test "x$use_undefined" != xyes],
+ AC_MSG_WARN([gcc undefined behaviour sanitizer not available])
+ CFLAGS="$old_CFLAGS" CXXFLAGS="$old_CXXFLAGS")
+fi
+case $use_undefined in
+ yes) check_undefined_val=1 ;;
+ *) check_undefined_val=0 ;;
+esac
+AC_DEFINE_UNQUOTED(CHECK_UNDEFINED, $check_undefined_val,
+ [Building with -fsanitize=undefined or not])
+
+AC_ARG_ENABLE([valgrind],
+AS_HELP_STRING([--enable-valgrind],[run all tests under valgrind]),
+[use_valgrind=$enableval], [use_valgrind=no])
+if test "$use_valgrind" = yes; then
+ AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
+ if test "$HAVE_VALGRIND" = "no"; then
+ AC_MSG_ERROR([valgrind not found])
+ fi
+fi
+AM_CONDITIONAL(USE_VALGRIND, test "$use_valgrind" = yes)
+
+AC_ARG_WITH([valgrind],
+AS_HELP_STRING([--with-valgrind],[include directory for Valgrind headers]),
+[with_valgrind_headers=$withval], [with_valgrind_headers=no])
+if test "x$with_valgrind_headers" != xno; then
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -I$with_valgrind_headers"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #include <valgrind/valgrind.h>
+ int main() { return 0; }
+ ]])], [ HAVE_VALGRIND_HEADERS="yes"
+ CFLAGS="$save_CFLAGS -I$with_valgrind_headers" ],
+ [ AC_MSG_ERROR([invalid valgrind include directory: $with_valgrind_headers]) ])
+fi
+
+AC_ARG_ENABLE([valgrind-annotations],
+AS_HELP_STRING([--enable-valgrind-annotations],[insert extra annotations for better valgrind support]),
+[use_vg_annotations=$enableval], [use_vg_annotations=no])
+if test "$use_vg_annotations" = yes; then
+ if test "x$HAVE_VALGRIND_HEADERS" != "xyes"; then
+ AC_MSG_CHECKING([whether Valgrind headers are available])
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #include <valgrind/valgrind.h>
+ int main() { return 0; }
+ ]])], [ AC_MSG_RESULT([yes]) ],
+ [ AC_MSG_ERROR([valgrind annotations requested but no headers are available]) ])
+ fi
+fi
+AM_CONDITIONAL(USE_VG_ANNOTATIONS, test "$use_vg_annotations" = yes)
+
+AC_ARG_ENABLE([install-elfh],
+AS_HELP_STRING([--enable-install-elfh],[install elf.h in include dir]),
+ [install_elfh=$enableval], [install_elfh=no])
+AM_CONDITIONAL(INSTALL_ELFH, test "$install_elfh" = yes)
+
AM_CONDITIONAL(BUILD_STATIC, [dnl
-test "$use_mudflap" = yes -o "$use_gprof" = yes -o "$use_gcov" = yes])
+test "$use_gprof" = yes -o "$use_gcov" = yes])
AC_ARG_ENABLE([tests-rpath],
AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
- [tests_use_rpath=yes], [tests_use_rpath=no])
+ [tests_use_rpath=$enableval], [tests_use_rpath=no])
AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
-LIBEBL_SUBDIR="$PACKAGE"
-AC_ARG_ENABLE([libebl-subdir],
-AS_HELP_STRING([--enable-libebl-subdir=DIR],
-[install libebl_CPU modules in $(libdir)/DIR]), [dnl
-LIBEBL_SUBDIR="$enable_libebl_subdir"])
-AC_SUBST([LIBEBL_SUBDIR])
-AC_DEFINE_UNQUOTED(LIBEBL_SUBDIR, "$LIBEBL_SUBDIR")
-AH_TEMPLATE([LIBEBL_SUBDIR], [$libdir subdirectory containing libebl modules.])
-
-dnl Test for zlib and bzlib, gives ZLIB/BZLIB .am
-dnl conditional and config.h USE_ZLIB/USE_BZLIB #define.
+dnl zlib is mandatory.
save_LIBS="$LIBS"
LIBS=
eu_ZIPLIB(zlib,ZLIB,z,gzdirect,gzip)
+AS_IF([test "x$with_zlib" = xno], [AC_MSG_ERROR([zlib not found but is required])])
+LIBS="$save_LIBS"
+
+dnl Test for bzlib and xz/lzma, gives BZLIB/LZMALIB .am
+dnl conditional and config.h USE_BZLIB/USE_LZMALIB #define.
+save_LIBS="$LIBS"
+LIBS=
eu_ZIPLIB(bzlib,BZLIB,bz2,BZ2_bzdopen,bzip2)
+# We need this since bzip2 doesn't have a pkgconfig file.
+BZ2_LIB="$LIBS"
+AC_SUBST([BZ2_LIB])
eu_ZIPLIB(lzma,LZMA,lzma,lzma_auto_decoder,[LZMA (xz)])
+AS_IF([test "x$with_lzma" = xyes], [LIBLZMA="liblzma"], [LIBLZMA=""])
+AC_SUBST([LIBLZMA])
zip_LIBS="$LIBS"
LIBS="$save_LIBS"
AC_SUBST([zip_LIBS])
+AC_CHECK_DECLS([memrchr, rawmemchr],[],[],
+ [#define _GNU_SOURCE
+ #include <string.h>])
+AC_CHECK_DECLS([powerof2],[],[],[#include <sys/param.h>])
+AC_CHECK_DECLS([mempcpy],[],[],
+ [#define _GNU_SOURCE
+ #include <string.h>])
+
+AC_CHECK_FUNCS([process_vm_readv])
+
+AC_CHECK_LIB([stdc++], [__cxa_demangle], [dnl
+AC_DEFINE([USE_DEMANGLE], [1], [Defined if demangling is enabled])])
+AM_CONDITIONAL(DEMANGLE, test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes")
+AS_IF([test "x$ac_cv_lib_stdcpp___cxa_demangle" = "xyes"],
+ [enable_demangler=yes],[enable_demangler=no])
+
+AC_ARG_ENABLE([textrelcheck],
+AS_HELP_STRING([--disable-textrelcheck],
+ [Disable textrelcheck being a fatal error]))
+AM_CONDITIONAL(FATAL_TEXTREL, [test "x$enable_textrelcheck" != "xno"])
+AS_IF([test "x$enable_textrelcheck" != "xno"],
+ [enable_textrelcheck=yes],[enable_textrelcheck=no])
+
+AC_ARG_ENABLE([symbol-versioning],
+AS_HELP_STRING([--disable-symbol-versioning],
+ [Disable symbol versioning in shared objects]))
+
+AC_CACHE_CHECK([whether symbol versioning is supported], ac_cv_symbol_versioning, [dnl
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
+#define NEW_VERSION(name, version) \
+ asm (".symver " #name "," #name "@@@" #version);
+int foo(int x) { return x + 1; }
+NEW_VERSION (foo, ELFUTILS_12.12)
+])], ac_cv_symbol_versioning=yes, ac_cv_symbol_versioning=no)])
+if test "$ac_cv_symbol_versioning" = "no"; then
+ if test "x$enable_symbol_versioning" != "xno"; then
+ AC_MSG_ERROR([Symbol versioning is not supported.
+ Use --disable-symbol-versioning to build without.])
+ fi
+fi
+
+AM_CONDITIONAL(SYMBOL_VERSIONING, [test "x$enable_symbol_versioning" != "xno"])
+AS_IF([test "x$enable_symbol_versioning" = "xno"],
+ [AC_MSG_WARN([Disabling symbol versioning breaks ABI compatibility.])
+ enable_symbol_versioning=no],[enable_symbol_versioning=yes])
+
+AC_CACHE_CHECK([whether gcc accepts -Wstack-usage], ac_cv_stack_usage, [dnl
+old_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wstack-usage=262144 -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
+ ac_cv_stack_usage=yes, ac_cv_stack_usage=no)
+CFLAGS="$old_CFLAGS"])
+AM_CONDITIONAL(ADD_STACK_USAGE_WARNING, [test "x$ac_cv_stack_usage" != "xno"])
+
+# -Wlogical-op was too fragile in the past, make sure we get a sane one.
+AC_CACHE_CHECK([whether gcc has a sane -Wlogical-op], ac_cv_logical_op, [dnl
+old_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wlogical-op -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#define FLAG 1
+ int f (int r, int f) { return (r && (FLAG || (FLAG & f))); }])],
+ ac_cv_logical_op=yes, ac_cv_logical_op=no)
+CFLAGS="$old_CFLAGS"])
+AM_CONDITIONAL(SANE_LOGICAL_OP_WARNING,
+ [test "x$ac_cv_logical_op" != "xno"])
+
+# -Wduplicated-cond was added by GCC6
+AC_CACHE_CHECK([whether gcc accepts -Wduplicated-cond], ac_cv_duplicated_cond, [dnl
+old_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wduplicated-cond -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
+ ac_cv_duplicated_cond=yes, ac_cv_duplicated_cond=no)
+CFLAGS="$old_CFLAGS"])
+AM_CONDITIONAL(HAVE_DUPLICATED_COND_WARNING,
+ [test "x$ac_cv_duplicated_cond" != "xno"])
+
+# -Wnull-dereference was added by GCC6
+AC_CACHE_CHECK([whether gcc accepts -Wnull-dereference], ac_cv_null_dereference, [dnl
+old_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wnull-dereference -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
+ ac_cv_null_dereference=yes, ac_cv_null_dereference=no)
+CFLAGS="$old_CFLAGS"])
+AM_CONDITIONAL(HAVE_NULL_DEREFERENCE_WARNING,
+ [test "x$ac_cv_null_dereference" != "xno"])
+
+# -Wimplicit-fallthrough was added by GCC7
+AC_CACHE_CHECK([whether gcc accepts -Wimplicit-fallthrough], ac_cv_implicit_fallthrough, [dnl
+old_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wimplicit-fallthrough -Werror"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([])],
+ ac_cv_implicit_fallthrough=yes, ac_cv_implicit_fallthrough=no)
+CFLAGS="$old_CFLAGS"])
+AM_CONDITIONAL(HAVE_IMPLICIT_FALLTHROUGH_WARNING,
+ [test "x$ac_cv_implicit_fallthrough" != "xno"])
+
+# Assume the fallthrough attribute is supported if -Wimplict-fallthrough is supported
+if test "$ac_cv_implicit_fallthrough" = "yes"; then
+ AC_DEFINE([HAVE_FALLTHROUGH], [1],
+ [Defined if __attribute__((fallthrough)) is supported])
+fi
+
+dnl Check if we have argp available from our libc
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <argp.h>],
+ [int argc=1; char *argv[]={"test"}; argp_parse(0,argc,&argv,0,0,0); return 0;]
+ )],
+ [libc_has_argp="true"],
+ [libc_has_argp="false"]
+)
+
+dnl If our libc doesn't provide argp, then test for libargp
+if test "$libc_has_argp" = "false" ; then
+ AC_MSG_WARN("libc does not have argp")
+ AC_CHECK_LIB([argp], [argp_parse], [have_argp="true"], [have_argp="false"])
+
+ if test "$have_argp" = "false"; then
+ AC_MSG_ERROR("no libargp found")
+ else
+ argp_LDADD="-largp"
+ fi
+else
+ argp_LDADD=""
+fi
+AC_SUBST([argp_LDADD])
+
dnl The directories with content.
dnl Documentation.
-dnl Commented out for now.
-dnl AC_CONFIG_FILES([doc/Makefile])
+AC_CONFIG_FILES([doc/Makefile])
dnl Support library.
AC_CONFIG_FILES([lib/Makefile])
dnl Higher-level ELF support library.
AC_CONFIG_FILES([libebl/Makefile])
+dnl DWARF-ELF Lower-level Functions support library.
+AC_CONFIG_FILES([libdwelf/Makefile])
+
dnl DWARF library.
AC_CONFIG_FILES([libdw/Makefile])
AM_CONDITIONAL(STANDALONE, false)dnl Used in tests/Makefile.am, which see.
AC_CONFIG_FILES([tests/Makefile])
+dnl pkgconfig files
+AC_CONFIG_FILES([config/libelf.pc config/libdw.pc])
+
# Get the definitions necessary to create the Makefiles in the po
# subdirectories. This is a small subset of the gettext rules.
AC_SUBST(USE_NLS, yes)
# 1.234<whatever> -> 1234<whatever>
case "$PACKAGE_VERSION" in
-[[0-9]].*) eu_version="${PACKAGE_VERSION/./}" ;;
+[[0-9]].*) eu_version=`echo "$PACKAGE_VERSION" | sed 's@\.@@'` ;;
*) AC_MSG_ERROR([confused by version number '$PACKAGE_VERSION']) ;;
esac
case "$eu_version" in
esac
# Round up to the next release API (x.y) version.
-[eu_version=$[($eu_version + 999) / 1000]]
+eu_version=$(( (eu_version + 999) / 1000 ))
+
+dnl Unique ID for this build.
+MODVERSION="Build for ${eu_version} ${ac_cv_build}"
+AC_SUBST([MODVERSION])
+AC_DEFINE_UNQUOTED(MODVERSION, "$MODVERSION")
+AH_TEMPLATE([MODVERSION], [Identifier for modules in the build.])
+
+AC_CHECK_SIZEOF(long)
+
+# On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
+# of the user_regs_struct from sys/user.h. They are structurally the same
+# but we get either one or the other.
+AC_CHECK_TYPE([struct user_regs_struct],
+ [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
+ [[#include <sys/ptrace.h>]
+ [#include <sys/time.h>]
+ [#include <sys/user.h>]])
+if test "$sys_user_has_user_regs" = "yes"; then
+ AC_DEFINE(HAVE_SYS_USER_REGS, 1,
+ [Define to 1 if <sys/user.h> defines struct user_regs_struct])
+fi
+
+# On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
+# Likewise in a 32-bit build on a host where $CC -m64 works.
+utrace_BIARCH
+# `$utrace_biarch' will be `-m64' even on an uniarch i386 machine.
+CC_BIARCH="$CC $utrace_biarch"
+AC_SUBST([CC_BIARCH])
+
+# In maintainer mode we really need flex and bison.
+# Otherwise we really need a release dir with maintainer files generated.
+if test "x$enable_maintainer_mode" = xyes; then
+ AC_CHECK_PROG(HAVE_FLEX, flex, yes, no)
+ if test "$HAVE_FLEX" = "no"; then
+ AC_MSG_ERROR([flex needed in maintainer mode])
+ fi
+ AC_CHECK_PROG(HAVE_BISON, bison, yes, no)
+ if test "$HAVE_BISON" = "no"; then
+ AC_MSG_ERROR([bison needed in maintainer mode])
+ fi
+ AC_CHECK_PROG(HAVE_GAWK, gawk, yes, no)
+ if test "$HAVE_GAWK" = "no"; then
+ AC_MSG_ERROR([gawk needed in maintainer mode])
+ fi
+else
+ if test ! -f ${srcdir}/libdw/known-dwarf.h; then
+ AC_MSG_ERROR([No libdw/known-dwarf.h. configure --enable-maintainer-mode])
+ fi
+fi
+
+# The testfiles are all compressed, we need bunzip2 when running make check
+AC_CHECK_PROG(HAVE_BUNZIP2, bunzip2, yes, no)
+if test "$HAVE_BUNZIP2" = "no"; then
+ AC_MSG_WARN([No bunzip2, needed to run make check])
+fi
AC_OUTPUT
+
+AC_MSG_NOTICE([
+=====================================================================
+ elfutils: ${PACKAGE_VERSION} (eu_version: ${eu_version})
+=====================================================================
+
+ Prefix : ${prefix}
+ Program prefix ("eu-" recommended) : ${program_prefix}
+ Source code location : ${srcdir}
+ Maintainer mode : ${enable_maintainer_mode}
+ build arch : ${ac_cv_build}
+
+ RECOMMENDED FEATURES (should all be yes)
+ gzip support : ${with_zlib}
+ bzip2 support : ${with_bzlib}
+ lzma/xz support : ${with_lzma}
+ libstdc++ demangle support : ${enable_demangler}
+ File textrel check : ${enable_textrelcheck}
+ Symbol versioning : ${enable_symbol_versioning}
+
+ NOT RECOMMENDED FEATURES (should all be no)
+ Experimental thread safety : ${use_locks}
+ install elf.h : ${install_elfh}
+
+ OTHER FEATURES
+ Deterministic archives by default : ${default_ar_deterministic}
+ Native language support : ${USE_NLS}
+ Extra Valgrind annotations : ${use_vg_annotations}
+
+ EXTRA TEST FEATURES (used with make check)
+ have bunzip2 installed (required) : ${HAVE_BUNZIP2}
+ debug branch prediction : ${use_debugpred}
+ gprof support : ${use_gprof}
+ gcov support : ${use_gcov}
+ run all tests under valgrind : ${use_valgrind}
+ gcc undefined behaviour sanitizer : ${use_undefined}
+ use rpath in tests : ${tests_use_rpath}
+ test biarch : ${utrace_cv_cc_biarch}
+])
+
+if test "$install_elfh" = yes; then
+ if test "${prefix}" = "/usr/local" -o "${prefix}" = "/usr"; then
+ AC_MSG_WARN([installing elf.h in ${includedir} might conflict with glibc/system elf.h])
+ fi
+fi
projects / platform / upstream / elfutils.git / blobdiff