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binutils-gdb/gdbserver/configure.ac
Simon Marchi 7e8c7130fe gdbserver: modernize configure.ac 
Run autoupdate on gdbserver/configure.ac and then tweak it to use easier
to read indentation.  This removes a few warnings when running
`autoreconf -vf -Wall`.

  * Replace AC_INIT with AC_INIT and no arguments plus AC_CONFIG_SRCDIR.
  * Replace AC_GNU_SOURCE with AC_USE_SYSTEM_EXTENSIONS.
  * Replace AC_TRY_COMPILE with AC_COMPILE_IFELSE.
  * Replace AC_TRY_LINK with AC_LINK_IFELSE.

autoupdate gets it right, except this one here:

    --- a/gdbserver/configure.ac
    +++ b/gdbserver/configure.ac
    @@ -304,7 +304,7 @@ if test "$srv_linux_thread_db" = "yes"; then
         AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],[found="-Wl,--dynamic-list"
                     RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],[RDYNAMIC="-rdynamic"
                     LDFLAGS="$old_LDFLAGS $RDYNAMIC"
    -                AC_TRY_LINK([], [],
    +                _au_m4_changequote([,])AC_TRY_LINK([], [],
                                 [found="-rdynamic"],
                                 [found="no"
                                  RDYNAMIC=""])])

... which I had to convert manually.

The changes in the generated configure file only contain insignificant
whitespace changes, so that gives confidence that the conversion is
correct.

gdbserver/ChangeLog:

	* configure.ac: Modernize.
	* configure: Re-generate.

Change-Id: Ia769aaec2aafac595504f477da955e91dffa4d8f
2020-10-31 08:30:58 -04:00

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dnl Autoconf configure script for GDB server.
dnl Copyright (C) 2000-2020 Free Software Foundation, Inc.
dnl
dnl This file is part of GDB.
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; either version 3 of the License, or
dnl (at your option) any later version.
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
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/>.
dnl Process this file with autoconf to produce a configure script.
AC_INIT
AC_CONFIG_SRCDIR([server.cc])
AC_CONFIG_HEADERS(config.h:config.in, [echo > stamp-h])
AM_MAINTAINER_MODE
AC_PROG_CC
AC_PROG_CXX
AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE
AM_PROG_INSTALL_STRIP
# Set build, build_cpu, build_vendor and build_os.
AC_CANONICAL_BUILD
# Set host, host_cpu, host_vendor, and host_os.
AC_CANONICAL_HOST
# Set target, target_cpu, target_vendor, and target_os.
AC_CANONICAL_TARGET
AC_PROG_INSTALL
AC_CHECK_TOOL(AR, ar)
AC_PROG_RANLIB
AC_ARG_PROGRAM
# We require a C++11 compiler. Check if one is available, and if
# necessary, set CXX_DIALECT to some -std=xxx switch.
AX_CXX_COMPILE_STDCXX(11, , mandatory)
AC_HEADER_STDC
GDB_AC_COMMON
# This is set by GDB_AC_COMMON.
AC_SUBST(WIN32APILIBS)
GDB_AC_SELFTEST
ACX_NONCANONICAL_TARGET
ACX_NONCANONICAL_HOST
# Dependency checking.
ZW_CREATE_DEPDIR
dnl Set up for gettext.
ZW_GNU_GETTEXT_SISTER_DIR
# Create sub-directories for objects and dependencies.
CONFIG_SRC_SUBDIR="arch gdbsupport nat target"
AC_SUBST(CONFIG_SRC_SUBDIR)
AC_CONFIG_COMMANDS([gdbdepdir],[
for subdir in ${CONFIG_SRC_SUBDIR}
do
$SHELL $ac_aux_dir/mkinstalldirs $subdir/$DEPDIR
done],
[ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR CONFIG_SRC_SUBDIR="$CONFIG_SRC_SUBDIR"])
ZW_PROG_COMPILER_DEPENDENCIES([CC])
AC_CHECK_HEADERS(termios.h sys/reg.h string.h dnl
sys/procfs.h linux/elf.h dnl
fcntl.h signal.h sys/file.h dnl
sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
netinet/tcp.h arpa/inet.h ws2tcpip.h)
AC_FUNC_FORK
AC_CHECK_FUNCS(pread pwrite pread64)
# Check the return and argument types of ptrace.
GDB_AC_PTRACE
# Check for UST
ustlibs=""
ustinc=""
AC_ARG_WITH(ust, [ --with-ust=PATH Specify prefix directory for the installed UST package
Equivalent to --with-ust-include=PATH/include
plus --with-ust-lib=PATH/lib])
AC_ARG_WITH(ust_include, [ --with-ust-include=PATH Specify directory for installed UST include files])
AC_ARG_WITH(ust_lib, [ --with-ust-lib=PATH Specify the directory for the installed UST library])
case $with_ust in
no)
ustlibs=
ustinc=
;;
"" | yes)
ustlibs=" -lust "
ustinc=""
;;
*)
ustlibs="-L$with_ust/lib -lust"
ustinc="-I$with_ust/include "
;;
esac
if test "x$with_ust_include" != x; then
ustinc="-I$with_ust_include "
fi
if test "x$with_ust_lib" != x; then
ustlibs="-L$with_ust_lib -lust"
fi
if test "x$with_ust" != "xno"; then
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $ustinc"
AC_MSG_CHECKING([for ust])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[
#define CONFIG_UST_GDB_INTEGRATION
#include <ust/ust.h>
],
[]
)],
[AC_MSG_RESULT([yes]);
AC_DEFINE(HAVE_UST, 1, [Define if UST is available])],
[AC_MSG_RESULT([no])
ustlibs= ; ustinc= ]
)
CFLAGS="$saved_CFLAGS"
fi
# Flags needed for UST
AC_SUBST(ustlibs)
AC_SUBST(ustinc)
AM_GDB_WARNINGS
dnl dladdr is glibc-specific. It is used by thread-db.c but only for
dnl debugging messages. It lives in -ldl which is handled below so we don't
dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here. Instead we just temporarily
dnl augment LIBS.
old_LIBS="$LIBS"
LIBS="$LIBS -ldl"
AC_CHECK_FUNCS(dladdr)
LIBS="$old_LIBS"
libiberty_INIT
AC_CHECK_DECLS([perror, vasprintf, vsnprintf])
AC_CHECK_TYPES(socklen_t, [], [],
[#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#elif HAVE_WS2TCPIP_H
# include <ws2tcpip.h>
#endif
])
case "${target}" in
*-android*)
# Starting with NDK version 9, <elf.h> actually includes definitions
# of Elf32_auxv_t and Elf64_auxv_t. But sadly, <elf.h> includes
# <sys/exec_elf.h> which defines some of the ELF types incorrectly,
# leading to conflicts with the defintions from <linux/elf.h>.
# This makes it impossible for us to include both <elf.h> and
# <linux/elf.h>, which means that, in practice, we do not have
# access to Elf32_auxv_t and Elf64_auxv_t on this platform.
# Therefore, do not try to auto-detect availability, as it would
# get it wrong on this platform.
;;
*)
AC_CHECK_TYPES([Elf32_auxv_t, Elf64_auxv_t], [], [],
#include <elf.h>
)
esac
ACX_PKGVERSION([GDB])
ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
# Check for various supplementary target information (beyond the
# triplet) which might affect the choices in configure.srv.
case "${target}" in
changequote(,)dnl
i[34567]86-*-linux*)
changequote([,])dnl
AC_CACHE_CHECK([if building for x86-64], [gdb_cv_i386_is_x86_64],
[save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $CFLAGS"
AC_EGREP_CPP([got it], [
#if __x86_64__
got it
#endif
], [gdb_cv_i386_is_x86_64=yes],
[gdb_cv_i386_is_x86_64=no])
CPPFLAGS="$save_CPPFLAGS"])
;;
x86_64-*-linux*)
AC_CACHE_CHECK([if building for x32], [gdb_cv_x86_is_x32],
[save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $CFLAGS"
AC_EGREP_CPP([got it], [
#if __x86_64__ && __ILP32__
got it
#endif
], [gdb_cv_x86_is_x32=yes],
[gdb_cv_x86_is_x32=no])
CPPFLAGS="$save_CPPFLAGS"])
;;
m68k-*-*)
AC_CACHE_CHECK([if building for Coldfire], [gdb_cv_m68k_is_coldfire],
[save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $CFLAGS"
AC_EGREP_CPP([got it], [
#ifdef __mcoldfire__
got it
#endif
], [gdb_cv_m68k_is_coldfire=yes],
[gdb_cv_m68k_is_coldfire=no])
CPPFLAGS="$save_CPPFLAGS"])
;;
esac
. ${srcdir}/configure.srv
if test "${srv_mingwce}" = "yes"; then
LIBS="$LIBS -lws2"
elif test "${srv_mingw}" = "yes"; then
# WIN32APILIBS is set by GDB_AC_COMMON.
LIBS="$LIBS $WIN32APILIBS"
fi
if test "${srv_linux_usrregs}" = "yes"; then
AC_DEFINE(HAVE_LINUX_USRREGS, 1,
[Define if the target supports PTRACE_PEEKUSR for register ]
[access.])
fi
if test "${srv_linux_regsets}" = "yes"; then
AC_DEFINE(HAVE_LINUX_REGSETS, 1,
[Define if the target supports register sets.])
AC_MSG_CHECKING(for PTRACE_GETREGS)
AC_CACHE_VAL(
[gdbsrv_cv_have_ptrace_getregs],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <sys/ptrace.h>], [PTRACE_GETREGS;])],
[gdbsrv_cv_have_ptrace_getregs=yes],
[gdbsrv_cv_have_ptrace_getregs=no]
)]
)
AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getregs)
if test "${gdbsrv_cv_have_ptrace_getregs}" = "yes"; then
AC_DEFINE(HAVE_PTRACE_GETREGS, 1,
[Define if the target supports PTRACE_GETREGS for register ]
[access.])
fi
AC_MSG_CHECKING(for PTRACE_GETFPXREGS)
AC_CACHE_VAL(
[gdbsrv_cv_have_ptrace_getfpxregs],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <sys/ptrace.h>], [PTRACE_GETFPXREGS;])],
[gdbsrv_cv_have_ptrace_getfpxregs=yes],
[gdbsrv_cv_have_ptrace_getfpxregs=no]
)]
)
AC_MSG_RESULT($gdbsrv_cv_have_ptrace_getfpxregs)
if test "${gdbsrv_cv_have_ptrace_getfpxregs}" = "yes"; then
AC_DEFINE(HAVE_PTRACE_GETFPXREGS, 1,
[Define if the target supports PTRACE_GETFPXREGS for extended ]
[register access.])
fi
fi
if test "${srv_linux_btrace}" = "yes"; then
AC_DEFINE(HAVE_LINUX_BTRACE, 1,
[Define if the target supports branch tracing.])
fi
dnl Some systems (e.g., Android) have lwpid_t defined in libthread_db.h.
if test "$bfd_cv_have_sys_procfs_type_lwpid_t" != yes; then
GDBSERVER_HAVE_THREAD_DB_TYPE(lwpid_t)
fi
dnl Some systems (e.g., Android) have psaddr_t defined in libthread_db.h.
if test "$bfd_cv_have_sys_procfs_type_psaddr_t" != yes; then
GDBSERVER_HAVE_THREAD_DB_TYPE(psaddr_t)
fi
dnl Check for libdl, but do not add it to LIBS as only gdbserver
dnl needs it (and gdbreplay doesn't).
old_LIBS="$LIBS"
AC_CHECK_LIB(dl, dlopen)
LIBS="$old_LIBS"
srv_thread_depfiles=
srv_libs=
if test "$srv_linux_thread_db" = "yes"; then
if test "$ac_cv_lib_dl_dlopen" = "yes"; then
srv_libs="-ldl"
AC_MSG_CHECKING(for the dynamic export flag)
old_LDFLAGS="$LDFLAGS"
# Older GNU ld supports --export-dynamic but --dynamic-list may not be
# supported there.
RDYNAMIC="-Wl,--dynamic-list=${srcdir}/proc-service.list"
LDFLAGS="$LDFLAGS $RDYNAMIC"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([],[])],
[found="-Wl,--dynamic-list"
RDYNAMIC='-Wl,--dynamic-list=$(srcdir)/proc-service.list'],
[RDYNAMIC="-rdynamic"
LDFLAGS="$old_LDFLAGS $RDYNAMIC"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([], [])],
[found="-rdynamic"],
[found="no"
RDYNAMIC=""]
)]
)
AC_SUBST(RDYNAMIC)
LDFLAGS="$old_LDFLAGS"
AC_MSG_RESULT($found)
else
srv_libs="-lthread_db"
fi
srv_thread_depfiles="thread-db.o proc-service.o"
AC_DEFINE(USE_THREAD_DB, 1, [Define if we should use libthread_db.])
AC_CACHE_CHECK(
[for TD_VERSION],
[gdbsrv_cv_have_td_version],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <thread_db.h>], [TD_VERSION;])],
[gdbsrv_cv_have_td_version=yes],
[gdbsrv_cv_have_td_version=no]
)]
)
if test "$gdbsrv_cv_have_td_version" = yes; then
AC_DEFINE(HAVE_TD_VERSION, 1, [Define if TD_VERSION is available.])
fi
fi
AC_ARG_WITH(libthread-db,
AS_HELP_STRING([--with-libthread-db=PATH], [use given libthread_db directly]),
[srv_libthread_db_path="${withval}"
srv_libs="$srv_libthread_db_path"
])
if test "$srv_libs" != "" -a "$srv_libs" != "-ldl"; then
AC_DEFINE(USE_LIBTHREAD_DB_DIRECTLY, 1, [Define if we should use libthread_db directly.])
fi
if test "$srv_xmlfiles" != ""; then
srv_xmlbuiltin="xml-builtin.o"
AC_DEFINE(USE_XML, 1, [Define if an XML target description is available.])
tmp_xmlfiles=$srv_xmlfiles
srv_xmlfiles=""
for f in $tmp_xmlfiles; do
srv_xmlfiles="$srv_xmlfiles \$(XML_DIR)/$f"
done
fi
GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles"
GDBSERVER_LIBS="$srv_libs"
dnl Check whether the target supports __sync_*_compare_and_swap.
AC_CACHE_CHECK(
[whether the target supports __sync_*_compare_and_swap],
[gdbsrv_cv_have_sync_builtins],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[],
[int foo, bar;
bar = __sync_val_compare_and_swap(&foo, 0, 1);]
)],
[gdbsrv_cv_have_sync_builtins=yes],
[gdbsrv_cv_have_sync_builtins=no]
)]
)
if test "$gdbsrv_cv_have_sync_builtins" = yes; then
AC_DEFINE(HAVE_SYNC_BUILTINS, 1,
[Define to 1 if the target supports __sync_*_compare_and_swap])
fi
dnl Check for -fvisibility=hidden support in the compiler.
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
[gdbsrv_cv_have_visibility_hidden=yes],
[gdbsrv_cv_have_visibility_hidden=no])
CFLAGS="$saved_cflags"
IPA_DEPFILES=""
extra_libraries=""
# check whether to enable the inprocess agent
if test "$ipa_obj" != "" \
-a "$gdbsrv_cv_have_sync_builtins" = yes \
-a "$gdbsrv_cv_have_visibility_hidden" = yes; then
have_ipa=true
else
have_ipa=false
fi
AC_ARG_ENABLE(inprocess-agent,
AS_HELP_STRING([--enable-inprocess-agent], [inprocess agent]),
[case "$enableval" in
yes) want_ipa=true ;;
no) want_ipa=false ;;
*) AC_MSG_ERROR([bad value $enableval for inprocess-agent]) ;;
esac],
[want_ipa=$have_ipa])
if $want_ipa ; then
if $have_ipa ; then
IPA_DEPFILES="$ipa_obj"
extra_libraries="$extra_libraries libinproctrace.so"
else
AC_MSG_ERROR([inprocess agent not supported for this target])
fi
fi
AC_SUBST(GDBSERVER_DEPFILES)
AC_SUBST(GDBSERVER_LIBS)
AC_SUBST(srv_xmlbuiltin)
AC_SUBST(srv_xmlfiles)
AC_SUBST(IPA_DEPFILES)
AC_SUBST(extra_libraries)
GNULIB=../gnulib/import
GNULIB_STDINT_H=
if test x"$STDINT_H" != x; then
GNULIB_STDINT_H=$GNULIB/$STDINT_H
fi
AC_SUBST(GNULIB_STDINT_H)
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
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