mirror of
https://github.com/darlinghq/darling-gdb.git
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On mainline/development, also link GDBserver with -lmcheck.
This factors --enable-libmcheck related bits from GDB's configure.ac and makes GDBserver use them too. Specifically, the 'development' global is moved to a separate script to it can be sourced by both GDB and GDBserver, and the --enable-libmcheck/--disable-libmcheck bits proper are moved to a new m4 file. I started out by defining 'development' in the m4 file, but in the end decided against it, as a separate script has the advantage that changing it in release branches does not require regenerating configure, unlike today. I had also started out by making the new GDB_AC_LIBMCHECK itself handle the yes/no default fallback depending on release/developement, but since I had split out 'development' to a separate script, and, GDB needs the python checks anyway (hence we'd need to do the python checks in gdb's configure.ac, and pass in a 'default lmcheck yes/no' parameter to GDB_AC_LIBMCHECK anyway), I ended up keeping GDB_AC_LIBMCHECK isolated from the 'development' global. IOW, it's the caller's business to handle it. Tested on x86_64 Fedora 17. Built GDB and GDBserver with and without --enable-libmcheck, and observed --enable-libmcheck overrides the disablement of -lmcheck caused by python supporting threads, and that GDBserver links with -lmcheck when expected. Also observed that changing the 'development' global, and issuing "make" triggers a relink, and '-lmcheck' is included or not from the link accordingly. gdb/ 2013-07-03 Pedro Alves <palves@redhat.com> * Makefile.in (config.status): Depend on development.sh. (aclocal_m4_deps): Add libmcheck.m4. * acinclude.m4: Include libmcheck.m4. * configure.ac: Source development.sh instead of setting 'development' here. --enable-libmcheck/--disable-libmcheck code factored out to GDB_AC_LIBMCHECK. Run it. * development.sh: New file. * libmcheck.m4: New file. * configure: Regenerate. gdb/gdbserver/ 2013-07-03 Pedro Alves <palves@redhat.com> * Makefile.in (config.status): Depend on development.sh. * acinclude.m4: Include libmcheck.m4. * configure: Regenerate.
This commit is contained in:
Pedro Alves
parent
5295321caf
commit
17ef446eed
@ -1,3 +1,15 @@
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2013-07-03 Pedro Alves <palves@redhat.com>
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* Makefile.in (config.status): Depend on development.sh.
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(aclocal_m4_deps): Add libmcheck.m4.
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* acinclude.m4: Include libmcheck.m4.
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* configure.ac: Source development.sh instead of setting
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'development' here. --enable-libmcheck/--disable-libmcheck code
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factored out to GDB_AC_LIBMCHECK. Run it.
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* development.sh: New file.
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* libmcheck.m4: New file.
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* configure: Regenerate.
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2013-07-02 Tom Tromey <tromey@redhat.com>
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* contrib/ari/update-web-ari.sh: Update for version.in change.
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@ -1348,7 +1348,7 @@ stamp-h: $(srcdir)/config.in config.status
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CONFIG_LINKS= \
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$(SHELL) config.status
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config.status: $(srcdir)/configure configure.tgt configure.host
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config.status: $(srcdir)/configure configure.tgt configure.host development.sh
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$(SHELL) config.status --recheck
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ACLOCAL = aclocal
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@ -1358,6 +1358,7 @@ ACLOCAL_AMFLAGS = -I ../config
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aclocal_m4_deps = \
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configure.ac \
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acx_configure_dir.m4 \
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libmcheck.m4 \
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../bfd/bfd.m4 \
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../config/acinclude.m4 \
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../config/plugins.m4 \
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@ -6,6 +6,9 @@ dnl major rewriting for Tcl 7.5 by Don Libes <libes@nist.gov>
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sinclude(acx_configure_dir.m4)
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# This gets GDB_AC_LIBMCHECK.
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sinclude(libmcheck.m4)
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dnl gdb/configure.in uses BFD_NEED_DECLARATION, so get its definition.
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sinclude(../bfd/bfd.m4)
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59
gdb/configure
vendored
59
gdb/configure
vendored
@ -1480,7 +1480,7 @@ Optional Features:
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--enable-gdbtk enable gdbtk graphical user interface (GUI)
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--enable-profiling enable profiling of GDB
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--disable-rpath do not hardcode runtime library paths
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--enable-libmcheck Try building GDB with -lmcheck if available
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--enable-libmcheck Try linking with -lmcheck if available
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--enable-werror treat compile warnings as errors
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--enable-build-warnings enable build-time compiler warnings if gcc is used
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--enable-gdb-build-warnings
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@ -2704,10 +2704,8 @@ fi
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# Provide more thorough testing by -lmcheck.
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# Set it to 'true' for development snapshots, 'false' for releases or
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# pre-releases.
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development=true
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# Set the 'development' global.
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. $srcdir/development.sh
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ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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@ -8565,36 +8563,33 @@ fi
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# Provide a --enable-libmcheck/--disable-libmcheck set of options
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# allowing a user to enable this option even when building releases,
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# or to disable it when building a snapshot.
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# Check whether --enable-libmcheck was given.
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if test "${enable_libmcheck+set}" = set; then :
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enableval=$enable_libmcheck; case "${enableval}" in
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yes | y) ENABLE_LIBMCHECK="yes" ;;
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no | n) ENABLE_LIBMCHECK="no" ;;
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*) as_fn_error "bad value ${enableval} for --enable-libmcheck" "$LINENO" 5 ;;
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esac
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fi
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# Enable -lmcheck by default (it provides cheap-enough memory mangling),
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# but turn it off if Python is enabled with threads, since -lmcheck is
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# not thread safe (http://sourceware.org/bugzilla/show_bug.cgi?id=9939),
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# and for releases.
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if test -z "${ENABLE_LIBMCHECK}" \
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-a \( "${have_libpython}" = "no" \
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-o "${python_has_threads}" = "no" \) \
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&& $development; then
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ENABLE_LIBMCHECK=yes
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if test \( "${have_libpython}" = "no" -o "${python_has_threads}" = "no" \) \
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&& $development; then
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libmcheck_default=yes
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else
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libmcheck_default=no
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fi
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if test "$ENABLE_LIBMCHECK" = "yes" ; then
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if test "${have_libpython}" != "no" -a "${python_has_threads}" = "yes" ; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-libmcheck may lead to spurious crashes if threads are used in python" >&5
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$as_echo "$as_me: WARNING: --enable-libmcheck may lead to spurious crashes if threads are used in python" >&2;}
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# Check whether --enable-libmcheck was given.
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if test "${enable_libmcheck+set}" = set; then :
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enableval=$enable_libmcheck; case "${enableval}" in
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yes | y) ENABLE_LIBMCHECK="yes" ;;
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no | n) ENABLE_LIBMCHECK="no" ;;
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*) as_fn_error "bad value ${enableval} for --enable-libmcheck" "$LINENO" 5 ;;
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esac
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fi
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if test -z "${ENABLE_LIBMCHECK}"; then
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ENABLE_LIBMCHECK=${libmcheck_default}
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lmcheck" >&5
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if test "$ENABLE_LIBMCHECK" = "yes" ; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lmcheck" >&5
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$as_echo_n "checking for main in -lmcheck... " >&6; }
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if test "${ac_cv_lib_mcheck_main+set}" = set; then :
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$as_echo_n "(cached) " >&6
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@ -8633,6 +8628,14 @@ _ACEOF
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fi
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fi
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if test "$ENABLE_LIBMCHECK" = "yes" \
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-a "${have_libpython}" != "no" \
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-a "${python_has_threads}" = "yes" ; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-libmcheck may lead to spurious crashes if threads are used in python" >&5
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$as_echo "$as_me: WARNING: --enable-libmcheck may lead to spurious crashes if threads are used in python" >&2;}
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fi
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# ------------------------- #
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@ -23,10 +23,8 @@ AC_INIT(main.c)
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AC_CONFIG_HEADER(config.h:config.in)
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AM_MAINTAINER_MODE
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# Provide more thorough testing by -lmcheck.
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# Set it to 'true' for development snapshots, 'false' for releases or
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# pre-releases.
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development=true
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# Set the 'development' global.
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. $srcdir/development.sh
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AC_PROG_CC
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AC_USE_SYSTEM_EXTENSIONS
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@ -1052,34 +1050,22 @@ AC_SUBST(PYTHON_CFLAGS)
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AC_SUBST(PYTHON_CPPFLAGS)
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AC_SUBST(PYTHON_LIBS)
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# Provide a --enable-libmcheck/--disable-libmcheck set of options
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# allowing a user to enable this option even when building releases,
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# or to disable it when building a snapshot.
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AC_ARG_ENABLE(libmcheck,
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AS_HELP_STRING([--enable-libmcheck],
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[Try building GDB with -lmcheck if available]),
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[case "${enableval}" in
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yes | y) ENABLE_LIBMCHECK="yes" ;;
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no | n) ENABLE_LIBMCHECK="no" ;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-libmcheck) ;;
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esac])
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# Enable -lmcheck by default (it provides cheap-enough memory mangling),
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# but turn it off if Python is enabled with threads, since -lmcheck is
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# not thread safe (http://sourceware.org/bugzilla/show_bug.cgi?id=9939),
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# and for releases.
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if test -z "${ENABLE_LIBMCHECK}" \
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-a \( "${have_libpython}" = "no" \
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-o "${python_has_threads}" = "no" \) \
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&& $development; then
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ENABLE_LIBMCHECK=yes
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if test \( "${have_libpython}" = "no" -o "${python_has_threads}" = "no" \) \
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&& $development; then
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libmcheck_default=yes
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else
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libmcheck_default=no
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fi
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GDB_AC_LIBMCHECK(${libmcheck_default})
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if test "$ENABLE_LIBMCHECK" = "yes" ; then
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if test "${have_libpython}" != "no" -a "${python_has_threads}" = "yes" ; then
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AC_MSG_WARN(--enable-libmcheck may lead to spurious crashes if threads are used in python)
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fi
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AC_CHECK_LIB(mcheck, main)
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if test "$ENABLE_LIBMCHECK" = "yes" \
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-a "${have_libpython}" != "no" \
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-a "${python_has_threads}" = "yes" ; then
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AC_MSG_WARN(--enable-libmcheck may lead to spurious crashes if threads are used in python)
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fi
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# ------------------------- #
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21
gdb/development.sh
Normal file
21
gdb/development.sh
Normal file
@ -0,0 +1,21 @@
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# Copyright (C) 2012-2013 Free Software Foundation, Inc.
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#
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# This file is part of GDB.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Set to 'true' for development snapshots, 'false' for releases and
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# pre-releases. When true, provide more thorough testing with
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# -lmcheck.
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development=true
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@ -1,3 +1,9 @@
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2013-07-03 Pedro Alves <palves@redhat.com>
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* Makefile.in (config.status): Depend on development.sh.
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* acinclude.m4: Include libmcheck.m4.
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* configure: Regenerate.
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2013-07-02 Mircea Gherzan <mircea.gherzan@intel.com>
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* win32-low.c (winapi_DebugActiveProcessStop): Move the WINAPI
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@ -379,7 +379,7 @@ $(GNULIB_BUILDDIR)/Makefile: $(srcdir)/../gnulib/Makefile.in config.status
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CONFIG_LINKS= \
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$(SHELL) config.status
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config.status: configure configure.srv
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config.status: configure configure.srv $(srcdir)/../development.sh
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$(SHELL) ./config.status --recheck
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# automatic rebuilding in automake-generated Makefiles requires
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@ -3,6 +3,9 @@ sinclude(../../bfd/bfd.m4)
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sinclude(../acx_configure_dir.m4)
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# This gets GDB_AC_LIBMCHECK.
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sinclude(../libmcheck.m4)
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dnl This gets autoconf bugfixes
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sinclude(../../config/override.m4)
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70
gdb/gdbserver/configure
vendored
70
gdb/gdbserver/configure
vendored
@ -687,6 +687,7 @@ ac_user_opts='
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enable_option_checking
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enable_maintainer_mode
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enable_largefile
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enable_libmcheck
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with_ust
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with_ust_include
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with_ust_lib
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@ -1326,6 +1327,7 @@ Optional Features:
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--enable-maintainer-mode enable make rules and dependencies not useful
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(and sometimes confusing) to the casual installer
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--disable-largefile omit support for large files
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--enable-libmcheck Try linking with -lmcheck if available
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--enable-werror treat compile warnings as errors
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--enable-inprocess-agent
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inprocess agent
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@ -4480,6 +4482,74 @@ _ACEOF
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fi
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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 $development; then
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libmcheck_default=yes
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else
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libmcheck_default=no
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fi
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# Check whether --enable-libmcheck was given.
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if test "${enable_libmcheck+set}" = set; then :
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enableval=$enable_libmcheck; case "${enableval}" in
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yes | y) ENABLE_LIBMCHECK="yes" ;;
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no | n) ENABLE_LIBMCHECK="no" ;;
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*) as_fn_error "bad value ${enableval} for --enable-libmcheck" "$LINENO" 5 ;;
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esac
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fi
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if test -z "${ENABLE_LIBMCHECK}"; then
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ENABLE_LIBMCHECK=${libmcheck_default}
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fi
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if test "$ENABLE_LIBMCHECK" = "yes" ; then
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lmcheck" >&5
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$as_echo_n "checking for main in -lmcheck... " >&6; }
|
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if test "${ac_cv_lib_mcheck_main+set}" = set; then :
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$as_echo_n "(cached) " >&6
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else
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ac_check_lib_save_LIBS=$LIBS
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LIBS="-lmcheck $LIBS"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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return main ();
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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ac_cv_lib_mcheck_main=yes
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else
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ac_cv_lib_mcheck_main=no
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LIBS=$ac_check_lib_save_LIBS
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_mcheck_main" >&5
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$as_echo "$ac_cv_lib_mcheck_main" >&6; }
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if test "x$ac_cv_lib_mcheck_main" = x""yes; then :
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cat >>confdefs.h <<_ACEOF
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#define HAVE_LIBMCHECK 1
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_ACEOF
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LIBS="-lmcheck $LIBS"
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fi
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fi
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# Dependency checking.
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rm -rf .tst 2>/dev/null
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mkdir .tst 2>/dev/null
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@ -41,6 +41,18 @@ AC_HEADER_DIRENT
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AC_FUNC_ALLOCA
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|
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# Set the 'development' global.
|
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. $srcdir/../development.sh
|
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|
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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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|
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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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|
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43
gdb/libmcheck.m4
Normal file
43
gdb/libmcheck.m4
Normal file
@ -0,0 +1,43 @@
|
||||
dnl Copyright (C) 2012-2013 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 GDB_AC_LIBMCHECK([DEFAULT])
|
||||
dnl Provide an --enable-libmcheck/--disable-libmcheck set of options
|
||||
dnl allowing a user to enable this option even when building releases,
|
||||
dnl or to disable it when building a snapshot.
|
||||
dnl DEFAULT (yes/no) is used as default if the user doesn't set
|
||||
dnl the option explicitly.
|
||||
|
||||
AC_DEFUN([GDB_AC_LIBMCHECK],
|
||||
[
|
||||
AC_ARG_ENABLE(libmcheck,
|
||||
AS_HELP_STRING([--enable-libmcheck],
|
||||
[Try linking with -lmcheck if available]),
|
||||
[case "${enableval}" in
|
||||
yes | y) ENABLE_LIBMCHECK="yes" ;;
|
||||
no | n) ENABLE_LIBMCHECK="no" ;;
|
||||
*) AC_MSG_ERROR(bad value ${enableval} for --enable-libmcheck) ;;
|
||||
esac])
|
||||
|
||||
if test -z "${ENABLE_LIBMCHECK}"; then
|
||||
ENABLE_LIBMCHECK=[$1]
|
||||
fi
|
||||
|
||||
if test "$ENABLE_LIBMCHECK" = "yes" ; then
|
||||
AC_CHECK_LIB(mcheck, main)
|
||||
fi
|
||||
])
|
||||
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Reference in New Issue
Block a user