786dc51990
On GDB release branches, we change $development in gdb/development.sh
to false, in order to build the GDB release without -Werror by default,
thus avoiding harmless compiler warnings from breaking the build of
someone who's only interested in building GDB rather than working
on it.
This patch implements the same strategy for gdbserver, using the exact
same method.
gdb/gdbserver/ChangeLog:
* configure.ac: Only use -Werror by default when DEVELOPMENT
is true.
* configure: Regenerate.
Tested on x86_64-linux, by rebuilding GDBserver first with development
set to true, and then doing it again with development set to false.
Werror was used in the first case, but not in the second.
477 lines
14 KiB
Text
477 lines
14 KiB
Text
dnl Autoconf configure script for GDB server.
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dnl Copyright (C) 2000-2014 Free Software Foundation, Inc.
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dnl
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dnl This file is part of GDB.
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dnl
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dnl This program is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
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dnl Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.59)dnl
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AC_INIT(server.c)
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AC_CONFIG_HEADER(config.h:config.in)
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AM_MAINTAINER_MODE
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AC_PROG_CC
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AC_GNU_SOURCE
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AC_SYS_LARGEFILE
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AC_CANONICAL_SYSTEM
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AC_PROG_INSTALL
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AC_PROG_RANLIB
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AC_ARG_PROGRAM
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AC_HEADER_STDC
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AC_FUNC_ALLOCA
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# Set the 'development' global.
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. $srcdir/../development.sh
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# Enable -lmcheck by default (it provides cheap-enough memory
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# mangling), but turn it off for releases.
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if $development; then
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libmcheck_default=yes
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else
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libmcheck_default=no
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fi
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GDB_AC_LIBMCHECK(${libmcheck_default})
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ACX_NONCANONICAL_TARGET
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ACX_NONCANONICAL_HOST
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# Dependency checking.
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ZW_CREATE_DEPDIR
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ZW_PROG_COMPILER_DEPENDENCIES([CC])
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# Check for the 'make' the user wants to use.
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AC_CHECK_PROGS(MAKE, make)
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MAKE_IS_GNU=
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case "`$MAKE --version 2>&1 | sed 1q`" in
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*GNU*)
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MAKE_IS_GNU=yes
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;;
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esac
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AM_CONDITIONAL(GMAKE, test "$MAKE_IS_GNU" = yes)
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AC_PROG_MAKE_SET
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# Configure gnulib. We can't use AC_CONFIG_SUBDIRS as that'd expect
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# to find the the source subdir to be configured directly under
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# gdbserver/. We need to build gnulib under some other directory not
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# "gnulib", to avoid the problem of both GDB and GDBserver wanting to
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# build it in the same directory, when building in the source dir.
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ACX_CONFIGURE_DIR(["../gnulib"], ["build-gnulib-gdbserver"])
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AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
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proc_service.h sys/procfs.h linux/elf.h dnl
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errno.h fcntl.h signal.h sys/file.h malloc.h dnl
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sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
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netinet/tcp.h arpa/inet.h)
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AC_CHECK_FUNCS(gettimeofday pread pwrite pread64 readlink)
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AC_REPLACE_FUNCS(vasprintf vsnprintf)
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GDB_AC_COMMON
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# Check for UST
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ustlibs=""
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ustinc=""
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AC_ARG_WITH(ust, [ --with-ust=PATH Specify prefix directory for the installed UST package
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Equivalent to --with-ust-include=PATH/include
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plus --with-ust-lib=PATH/lib])
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AC_ARG_WITH(ust_include, [ --with-ust-include=PATH Specify directory for installed UST include files])
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AC_ARG_WITH(ust_lib, [ --with-ust-lib=PATH Specify the directory for the installed UST library])
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case $with_ust in
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no)
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ustlibs=
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ustinc=
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;;
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"" | yes)
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ustlibs=" -lust "
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ustinc=""
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;;
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*)
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ustlibs="-L$with_ust/lib -lust"
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ustinc="-I$with_ust/include "
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;;
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esac
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if test "x$with_ust_include" != x; then
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ustinc="-I$with_ust_include "
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fi
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if test "x$with_ust_lib" != x; then
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ustlibs="-L$with_ust_lib -lust"
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fi
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if test "x$with_ust" != "xno"; then
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $ustinc"
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AC_MSG_CHECKING([for ust])
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AC_TRY_COMPILE([
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#define CONFIG_UST_GDB_INTEGRATION
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#include <ust/ust.h>
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],[],
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[AC_MSG_RESULT([yes]); AC_DEFINE(HAVE_UST, 1, [Define if UST is available])],
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[AC_MSG_RESULT([no]); ustlibs= ; ustinc= ])
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CFLAGS="$saved_CFLAGS"
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fi
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# Flags needed for UST
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AC_SUBST(ustlibs)
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AC_SUBST(ustinc)
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AC_ARG_ENABLE(werror,
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AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
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[case "${enableval}" in
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yes | y) ERROR_ON_WARNING="yes" ;;
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no | n) ERROR_ON_WARNING="no" ;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
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esac])
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# Enable -Werror by default when using gcc. Turn it off for releases.
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if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" && $development; then
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ERROR_ON_WARNING=yes
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fi
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WERROR_CFLAGS=""
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if test "${ERROR_ON_WARNING}" = yes ; then
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WERROR_CFLAGS="-Werror"
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fi
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build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
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-Wformat-nonliteral -Wno-char-subscripts -Wempty-body"
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WARN_CFLAGS=""
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if test "x$GCC" = xyes
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then
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AC_MSG_CHECKING(compiler warning flags)
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# Separate out the -Werror flag as some files just cannot be
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# compiled with it enabled.
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for w in ${build_warnings}; do
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case $w in
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-Werr*) WERROR_CFLAGS=-Werror ;;
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*) # Check that GCC accepts it
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $w"
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AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
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CFLAGS="$saved_CFLAGS"
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esac
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done
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AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
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fi
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AC_SUBST(WARN_CFLAGS)
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AC_SUBST(WERROR_CFLAGS)
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dnl dladdr is glibc-specific. It is used by thread-db.c but only for
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dnl debugging messages. It lives in -ldl which is handled below so we don't
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dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here. Instead we just temporarily
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dnl augment LIBS.
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old_LIBS="$LIBS"
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LIBS="$LIBS -ldl"
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AC_CHECK_FUNCS(dladdr)
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LIBS="$old_LIBS"
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AC_CHECK_DECLS([strerror, perror, vasprintf, vsnprintf])
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AC_CHECK_TYPES(socklen_t, [], [],
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[#include <sys/types.h>
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#include <sys/socket.h>
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])
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AC_CHECK_TYPES([Elf32_auxv_t, Elf64_auxv_t], [], [],
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#include <elf.h>
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)
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ACX_PKGVERSION([GDB])
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ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
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AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
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AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
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# Check for various supplementary target information (beyond the
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# triplet) which might affect the choices in configure.srv.
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case "${target}" in
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changequote(,)dnl
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i[34567]86-*-linux*)
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changequote([,])dnl
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AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
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[save_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $CFLAGS"
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AC_EGREP_CPP([got it], [
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#if __x86_64__
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got it
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#endif
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], [gdb_cv_i386_is_x86_64=yes],
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[gdb_cv_i386_is_x86_64=no])
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CPPFLAGS="$save_CPPFLAGS"])
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;;
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m68k-*-*)
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AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
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[save_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $CFLAGS"
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AC_EGREP_CPP([got it], [
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#ifdef __mcoldfire__
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got it
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#endif
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], [gdb_cv_m68k_is_coldfire=yes],
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[gdb_cv_m68k_is_coldfire=no])
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CPPFLAGS="$save_CPPFLAGS"])
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;;
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esac
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. ${srcdir}/configure.srv
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if test "${srv_mingwce}" = "yes"; then
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LIBS="$LIBS -lws2"
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elif test "${srv_mingw}" = "yes"; then
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LIBS="$LIBS -lws2_32"
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elif test "${srv_qnx}" = "yes"; then
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LIBS="$LIBS -lsocket"
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elif test "${srv_lynxos}" = "yes"; then
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LIBS="$LIBS -lnetinet"
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fi
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if test "${srv_mingw}" = "yes"; then
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AC_DEFINE(USE_WIN32API, 1,
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[Define if we should use the Windows API, instead of the
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POSIX API. On Windows, we use the Windows API when
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building for MinGW, but the POSIX API when building
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for Cygwin.])
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fi
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if test "${srv_linux_usrregs}" = "yes"; then
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AC_DEFINE(HAVE_LINUX_USRREGS, 1,
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[Define if the target supports PTRACE_PEEKUSR for register ]
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[access.])
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fi
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if test "${srv_linux_regsets}" = "yes"; then
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AC_DEFINE(HAVE_LINUX_REGSETS, 1,
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[Define if the target supports register sets.])
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AC_MSG_CHECKING(for PTRACE_GETREGS)
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AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getregs,
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[AC_TRY_COMPILE([#include <sys/ptrace.h>],
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[PTRACE_GETREGS;],
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[gdbsrv_cv_have_ptrace_getregs=yes],
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[gdbsrv_cv_have_ptrace_getregs=no])])
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AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getregs)
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if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
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AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
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[Define if the target supports PTRACE_GETREGS for register ]
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[access.])
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fi
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AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
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AC_CACHE_VAL(gdbsrv_cv_have_ptrace_getfpxregs,
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[AC_TRY_COMPILE([#include <sys/ptrace.h>],
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[PTRACE_GETFPXREGS;],
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[gdbsrv_cv_have_ptrace_getfpxregs=yes],
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[gdbsrv_cv_have_ptrace_getfpxregs=no])])
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AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getfpxregs)
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if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
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AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
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[Define if the target supports PTRACE_GETFPXREGS for extended ]
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[register access.])
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fi
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fi
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if test "${srv_linux_btrace}" = "yes"; then
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AC_DEFINE(HAVE_LINUX_BTRACE, 1,
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[Define if the target supports branch tracing.])
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fi
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if test "$ac_cv_header_sys_procfs_h" = yes; then
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BFD_HAVE_SYS_PROCFS_TYPE(lwpid_t)
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BFD_HAVE_SYS_PROCFS_TYPE(psaddr_t)
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BFD_HAVE_SYS_PROCFS_TYPE(prgregset_t)
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BFD_HAVE_SYS_PROCFS_TYPE(elf_fpregset_t)
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fi
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dnl Some systems (e.g., Android) have lwpid_t defined in libthread_db.h.
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if test "$bfd_cv_have_sys_procfs_type_lwpid_t" != yes; then
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GDBSERVER_HAVE_THREAD_DB_TYPE(lwpid_t)
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fi
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dnl Some systems (e.g., Android) have psaddr_t defined in libthread_db.h.
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if test "$bfd_cv_have_sys_procfs_type_psaddr_t" != yes; then
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GDBSERVER_HAVE_THREAD_DB_TYPE(psaddr_t)
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fi
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dnl Check for libdl, but do not add it to LIBS as only gdbserver
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dnl needs it (and gdbreplay doesn't).
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old_LIBS="$LIBS"
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AC_CHECK_LIB(dl, dlopen)
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LIBS="$old_LIBS"
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srv_thread_depfiles=
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srv_libs=
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if test "$srv_linux_thread_db" = "yes"; then
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if test "$ac_cv_lib_dl_dlopen" = "yes"; then
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srv_libs="-ldl"
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AC_MSG_CHECKING(for the dynamic export flag)
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old_LDFLAGS="$LDFLAGS"
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# Older GNU ld supports --export-dynamic but --dynamic-list may not be
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# supported there.
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RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
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LDFLAGS="$LDFLAGS $RDYNAMIC"
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AC_TRY_LINK([], [],
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[found="-Wl,--dynamic-list"
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RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],
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[RDYNAMIC="-rdynamic"
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LDFLAGS="$old_LDFLAGS $RDYNAMIC"
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AC_TRY_LINK([], [],
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[found="-rdynamic"],
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[found="no"
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RDYNAMIC=""])])
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AC_SUBST(RDYNAMIC)
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LDFLAGS="$old_LDFLAGS"
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AC_MSG_RESULT($found)
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else
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srv_libs="-lthread_db"
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fi
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srv_thread_depfiles="thread-db.o proc-service.o"
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AC_DEFINE(USE_THREAD_DB, 1, [Define if we should use libthread_db.])
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AC_CACHE_CHECK([for TD_VERSION], gdbsrv_cv_have_td_version,
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[AC_TRY_COMPILE([#include <thread_db.h>], [TD_VERSION;],
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[gdbsrv_cv_have_td_version=yes],
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[gdbsrv_cv_have_td_version=no])])
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if test $gdbsrv_cv_have_td_version = yes; then
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AC_DEFINE(HAVE_TD_VERSION, 1, [Define if TD_VERSION is available.])
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fi
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fi
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AC_ARG_WITH(libthread-db,
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AS_HELP_STRING([--with-libthread-db=PATH], [use given libthread_db directly]),
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[srv_libthread_db_path="${withval}"
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srv_libs="$srv_libthread_db_path"
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])
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if test "$srv_libs" != "" -a "$srv_libs" != "-ldl"; then
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AC_DEFINE(USE_LIBTHREAD_DB_DIRECTLY, 1, [Define if we should use libthread_db directly.])
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fi
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if test "$srv_xmlfiles" != ""; then
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srv_xmlbuiltin="xml-builtin.o"
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AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])
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tmp_xmlfiles=$srv_xmlfiles
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srv_xmlfiles=""
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for f in $tmp_xmlfiles; do
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srv_xmlfiles="$srv_xmlfiles \$(XML_DIR)/$f"
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done
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fi
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GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles"
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GDBSERVER_LIBS="$srv_libs"
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dnl Check whether the target supports __sync_*_compare_and_swap.
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AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap],
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gdbsrv_cv_have_sync_builtins, [
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AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);],
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gdbsrv_cv_have_sync_builtins=yes,
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gdbsrv_cv_have_sync_builtins=no)])
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|
if test $gdbsrv_cv_have_sync_builtins = yes; then
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AC_DEFINE(HAVE_SYNC_BUILTINS, 1,
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|
[Define to 1 if the target supports __sync_*_compare_and_swap])
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fi
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dnl Check for -fvisibility=hidden support in the compiler.
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saved_cflags="$CFLAGS"
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CFLAGS="$CFLAGS -fvisibility=hidden"
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AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
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[gdbsrv_cv_have_visibility_hidden=yes],
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[gdbsrv_cv_have_visibility_hidden=no])
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CFLAGS="$saved_cflags"
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dnl Check if we can disable the virtual address space randomization.
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dnl The functionality of setarch -R.
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AC_CHECK_DECLS([ADDR_NO_RANDOMIZE],,, [#include <sys/personality.h>])
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define([PERSONALITY_TEST], [AC_LANG_PROGRAM([#include <sys/personality.h>], [
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# if !HAVE_DECL_ADDR_NO_RANDOMIZE
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# define ADDR_NO_RANDOMIZE 0x0040000
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# endif
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/* Test the flag could be set and stays set. */
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personality (personality (0xffffffff) | ADDR_NO_RANDOMIZE);
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if (!(personality (personality (0xffffffff)) & ADDR_NO_RANDOMIZE))
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return 1])])
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AC_RUN_IFELSE([PERSONALITY_TEST],
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[gdbsrv_cv_have_personality=true],
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[gdbsrv_cv_have_personality=false],
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[AC_LINK_IFELSE([PERSONALITY_TEST],
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[gdbsrv_cv_have_personality=true],
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[gdbsrv_cv_have_personality=false])])
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|
if $gdbsrv_cv_have_personality
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then
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AC_DEFINE([HAVE_PERSONALITY], 1,
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|
[Define if you support the personality syscall.])
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fi
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IPA_DEPFILES=""
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extra_libraries=""
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# check whether to enable the inprocess agent
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|
if test "$ipa_obj" != "" \
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|
-a "$gdbsrv_cv_have_sync_builtins" = yes \
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-a "$gdbsrv_cv_have_visibility_hidden" = yes; then
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have_ipa=true
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else
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have_ipa=false
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fi
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AC_ARG_ENABLE(inprocess-agent,
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AS_HELP_STRING([--enable-inprocess-agent], [inprocess agent]),
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[case "$enableval" in
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yes) want_ipa=true ;;
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no) want_ipa=false ;;
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*) AC_MSG_ERROR([bad value $enableval for inprocess-agent]) ;;
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|
esac],
|
|
[want_ipa=$have_ipa])
|
|
|
|
if $want_ipa ; then
|
|
if $have_ipa ; then
|
|
IPA_DEPFILES="$ipa_obj"
|
|
extra_libraries="$extra_libraries libinproctrace.so"
|
|
else
|
|
AC_MSG_ERROR([inprocess agent not supported for this target])
|
|
fi
|
|
fi
|
|
|
|
AC_SUBST(GDBSERVER_DEPFILES)
|
|
AC_SUBST(GDBSERVER_LIBS)
|
|
AC_SUBST(srv_xmlbuiltin)
|
|
AC_SUBST(srv_xmlfiles)
|
|
AC_SUBST(IPA_DEPFILES)
|
|
AC_SUBST(extra_libraries)
|
|
|
|
GNULIB=build-gnulib-gdbserver/import
|
|
|
|
GNULIB_STDINT_H=
|
|
if test x"$STDINT_H" != x; then
|
|
GNULIB_STDINT_H=$GNULIB/$STDINT_H
|
|
fi
|
|
AC_SUBST(GNULIB_STDINT_H)
|
|
|
|
AC_OUTPUT(Makefile,
|
|
[case x$CONFIG_HEADERS in
|
|
xconfig.h:config.in)
|
|
echo > stamp-h ;;
|
|
esac
|
|
])
|