crosstool-ng/scripts/build/debug/300-gdb.sh
Sergey Korolev 70a1584e15 Fix variables passing to gdb configure scripts
These changes mainly fix static linking errors when building static
native gdb and gdbserver (tested with gcc 7.2.0 + uClibc-ng 1.0.27 +
binutils 2.29.1 for MIPS):

[ALL  ]    .../lib/libstdc++.a(eh_throw.o): In function `__cxa_throw':
[ALL  ]    (.text.__cxa_throw+0x64): undefined reference to `_Unwind_RaiseException'
[ALL  ]    (.text.__cxa_throw+0x6c): undefined reference to `_Unwind_RaiseException'
[ALL  ]    .../lib/libstdc++.a(eh_throw.o): In function `__cxa_rethrow':
[ALL  ]    (.text.__cxa_rethrow+0x78): undefined reference to `_Unwind_Resume_or_Rethrow'
[ALL  ]    (.text.__cxa_rethrow+0x80): undefined reference to `_Unwind_Resume_or_Rethrow'
...

The problem is in mixing of CPP, CC, CXX, and LD with CPPFLAGS, CFLAGS,
CXXFLAGS, and LDFLAGS before passing to configure scripts.
gcc is sensitive to argument order and the scripts are normally responsible
to combine the variables in a proper way.

Signed-off-by: Sergey Korolev <s.korolev@ndmsystems.com>
2017-12-14 22:55:43 +03:00

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# Build script for the gdb debug facility
do_debug_gdb_get() {
CT_Fetch GDB
}
do_debug_gdb_extract() {
CT_ExtractPatch GDB
}
do_debug_gdb_build() {
local -a extra_config
# These variables should be global and shared between all packages.
local CT_TARGET_CPP="${CT_TARGET}-cpp"
local CT_TARGET_CC="${CT_TARGET}-gcc"
local CT_TARGET_CXX="${CT_TARGET}-g++"
local CT_TARGET_LD="${CT_TARGET}-ld"
local CT_HOST_CPP="${CT_HOST}-cpp"
local CT_HOST_CC="${CT_HOST}-gcc"
local CT_HOST_CXX="${CT_HOST}-g++"
local CT_HOST_LD="${CT_HOST}-ld"
local CT_CXXFLAGS_FOR_HOST=${CT_CFLAGS_FOR_HOST}
local CT_TARGET_CXXFLAGS=${CT_TARGET_CFLAGS}
gdb_src_dir="${CT_SRC_DIR}/gdb"
if [ "${CT_GDB_HAS_PKGVERSION_BUGURL}" = "y" ]; then
[ -n "${CT_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_PKGVERSION}")
[ -n "${CT_TOOLCHAIN_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_TOOLCHAIN_BUGURL}")
fi
if [ "${CT_GDB_CROSS}" = "y" ]; then
local -a cross_extra_config
local gcc_version p _p
local cross_CPPFLAGS cross_CFLAGS cross_CXXFLAGS cross_LDFLAGS
CT_DoStep INFO "Installing cross-gdb"
CT_DoLog EXTRA "Configuring cross-gdb"
mkdir -p "${CT_BUILD_DIR}/build-gdb-cross"
cd "${CT_BUILD_DIR}/build-gdb-cross"
cross_extra_config=("${extra_config[@]}")
# For gdb-cross this combination of flags forces
# gdb configure to fall back to default '-lexpat' flag
# which is acceptable.
#
# NOTE: DO NOT USE --with-libexpat-prefix (until GDB configure is smarter)!!!
# It conflicts with a static build: GDB's configure script will find the shared
# version of expat and will attempt to link that, despite the -static flag.
# The link will fail, and configure will abort with "expat missing or unusable"
# message.
cross_extra_config+=("--with-expat")
cross_extra_config+=("--without-libexpat-prefix")
case "${CT_THREADS}" in
none) cross_extra_config+=("--disable-threads");;
*) cross_extra_config+=("--enable-threads");;
esac
if [ "${CT_GDB_CROSS_PYTHON}" = "y" ]; then
if [ -z "${CT_GDB_CROSS_PYTHON_BINARY}" ]; then
for p in python python3 python2; do
_p=$( which "${p}" || true )
if [ -n "${_p}" ]; then
cross_extra_config+=("--with-python=${_p}")
break
fi
done
if [ -z "${_p}" ]; then
CT_Abort "Python support requested in cross-gdb, but Python not found. Set CT_GDB_CROSS_PYTHON_BINARY in your config."
fi
else
cross_extra_config+=("--with-python=${CT_GDB_CROSS_PYTHON_BINARY}")
fi
else
cross_extra_config+=("--with-python=no")
fi
if [ "${CT_GDB_CROSS_SIM}" = "y" ]; then
cross_extra_config+=("--enable-sim")
else
cross_extra_config+=("--disable-sim")
fi
if [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ]; then
cross_extra_config+=("--disable-nls")
fi
cross_CPPFLAGS="${CT_CPPFLAGS_FOR_HOST}"
cross_CFLAGS="${CT_CFLAGS_FOR_HOST}"
cross_CXXFLAGS="${CT_CXXFLAGS_FOR_HOST}"
cross_LDFLAGS="${CT_LDFLAGS_FOR_HOST}"
if [ "${CT_GDB_CROSS_STATIC}" = "y" ]; then
cross_CFLAGS+=("-static")
cross_CXXFLAGS+=("-static")
cross_LDFLAGS+=("-static")
fi
case "${CT_HOST}" in
*darwin*)
# FIXME: Really, we should be testing for host compiler being clang.
cross_CFLAGS+=("-Qunused-arguments")
cross_CXXFLAGS+=("-Qunused-arguments")
# clang detects the line from gettext's _ macro as format string
# not being a string literal and produces a lot of warnings - which
# ct-ng's logger faithfully relays to user if this happens in the
# error() function. Suppress them.
cross_extra_config+=("--enable-build-warnings=,-Wno-format-nonliteral,-Wno-format-security")
;;
esac
# Fix up whitespace. Some older GDB releases (e.g. 6.8a) get confused if there
# are multiple consecutive spaces: sub-configure scripts replace them with a
# single space and then complain that $CC value changed from that in
# the master directory.
cross_CPPFLAGS=`echo ${cross_CPPFLAGS}`
cross_CFLAGS=`echo ${cross_CFLAGS}`
cross_CXXFLAGS=`echo ${cross_CXXFLAGS}`
cross_LDFLAGS=`echo ${cross_LDFLAGS}`
# Disable binutils options when building from the binutils-gdb repo.
cross_extra_config+=("--disable-binutils")
cross_extra_config+=("--disable-ld")
cross_extra_config+=("--disable-gas")
CT_DoLog DEBUG "Extra config passed: '${cross_extra_config[*]}'"
CT_DoExecLog CFG \
CPP="${CT_HOST_CPP}" \
CC="${CT_HOST_CC}" \
CXX="${CT_HOST_CXX}" \
LD="${CT_HOST_LD}" \
CPPFLAGS="${cross_CPPFLAGS}" \
CFLAGS="${cross_CFLAGS}" \
CXXFLAGS="${cross_CXXFLAGS}" \
LDFLAGS="${cross_LDFLAGS}" \
${CONFIG_SHELL} \
"${gdb_src_dir}/configure" \
--build=${CT_BUILD} \
--host=${CT_HOST} \
--target=${CT_TARGET} \
--prefix="${CT_PREFIX_DIR}" \
--with-build-sysroot="${CT_SYSROOT_DIR}" \
--with-sysroot="${CT_SYSROOT_DIR}" \
--disable-werror \
"${cross_extra_config[@]}" \
"${CT_GDB_CROSS_EXTRA_CONFIG_ARRAY[@]}"
CT_DoLog EXTRA "Building cross-gdb"
CT_DoExecLog ALL make ${JOBSFLAGS}
CT_DoLog EXTRA "Installing cross-gdb"
CT_DoExecLog ALL make install
if [ "${CT_BUILD_MANUALS}" = "y" ]; then
CT_DoLog EXTRA "Building and installing the cross-GDB manuals"
CT_DoExecLog ALL make ${JOBSFLAGS} pdf html
CT_DoExecLog ALL make install-{pdf,html}-gdb
fi
if [ "${CT_GDB_INSTALL_GDBINIT}" = "y" ]; then
CT_DoLog EXTRA "Installing '.gdbinit' template"
# See in scripts/build/internals.sh for why we do this
# TBD GCC 3.x and older not supported
if [ -f "${CT_SRC_DIR}/gcc/gcc/BASE-VER" ]; then
gcc_version=$(cat "${CT_SRC_DIR}/gcc/gcc/BASE-VER")
else
gcc_version=$(sed -r -e '/version_string/!d; s/^.+= "([^"]+)".*$/\1/;' \
"${CT_SRC_DIR}/gcc/gcc/version.c" \
)
fi
sed -r \
-e "s:@@PREFIX@@:${CT_PREFIX_DIR}:;" \
-e "s:@@VERSION@@:${gcc_version}:;" \
"${CT_LIB_DIR}/scripts/build/debug/gdbinit.in" \
>"${CT_PREFIX_DIR}/share/gdb/gdbinit"
fi # Install gdbinit sample
CT_EndStep
fi
# TBD combine GDB native and gdbserver backends, build either or both in a single pass.
if [ "${CT_GDB_NATIVE}" = "y" ]; then
local -a native_extra_config
local native_CPPFLAGS native_CFLAGS native_CXXFLAGS native_LDFLAGS
CT_DoStep INFO "Installing native gdb"
CT_DoLog EXTRA "Configuring native gdb"
mkdir -p "${CT_BUILD_DIR}/build-gdb-native"
cd "${CT_BUILD_DIR}/build-gdb-native"
native_extra_config=("${extra_config[@]}")
# We may not have C++ language configured for target
if [ "${GDB_TARGET_DISABLE_CXX_BUILD}" = "y" ]; then
native_extra_config+=("--disable-build-with-cxx")
fi
# GDB on Mingw depends on PDcurses, not ncurses
if [ "${CT_MINGW32}" != "y" ]; then
native_extra_config+=("--with-curses")
fi
# Target libexpat resides in sysroot and does not have
# any dependencies, so just passing '-lexpat' to gcc is enough.
#
# By default gdb configure looks for expat in '$prefix/lib'
# directory. In our case '$prefix/lib' resolves to '/usr/lib'
# where libexpat for build platform lives, which is
# unacceptable for cross-compiling.
#
# To prevent this '--without-libexpat-prefix' flag must be passed.
# Thus configure falls back to '-lexpat', which is exactly what we want.
#
# NOTE: DO NOT USE --with-libexpat-prefix (until GDB configure is smarter)!!!
# It conflicts with a static build: GDB's configure script will find the shared
# version of expat and will attempt to link that, despite the -static flag.
# The link will fail, and configure will abort with "expat missing or unusable"
# message.
native_extra_config+=("--with-expat")
native_extra_config+=("--without-libexpat-prefix")
case "${CT_THREADS}" in
none) native_extra_config+=("--disable-threads");;
*) native_extra_config+=("--enable-threads");;
esac
if [ "${CT_TOOLCHAIN_ENABLE_NLS}" != "y" ]; then
native_extra_config+=("--disable-nls")
fi
native_CPPFLAGS="${CT_TARGET_CPPFLAGS}"
native_CFLAGS="${CT_TARGET_CFLAGS}"
native_CXXFLAGS="${CT_TARGET_CXXFLAGS}"
native_LDFLAGS="${CT_TARGET_LDFLAGS}"
if [ "${CT_GDB_NATIVE_STATIC}" = "y" ]; then
native_CFLAGS+=("-static")
native_CXXFLAGS+=("-static")
native_LDFLAGS+=("-static")
fi
export ac_cv_func_strncmp_works=yes
# Disable binutils options when building from the binutils-gdb repo.
native_extra_config+=("--disable-binutils")
native_extra_config+=("--disable-ld")
native_extra_config+=("--disable-gas")
native_CPPFLAGS=`echo ${native_CPPFLAGS}`
native_CFLAGS=`echo ${native_CFLAGS}`
native_CXXFLAGS=`echo ${native_CXXFLAGS}`
native_LDFLAGS=`echo ${native_LDFLAGS}`
CT_DoLog DEBUG "Extra config passed: '${native_extra_config[*]}'"
CT_DoExecLog CFG \
CPP="${CT_TARGET_CPP}" \
CC="${CT_TARGET_CC}" \
CXX="${CT_TARGET_CXX}" \
LD="${CT_TARGET_LD}" \
CPPFLAGS="${native_CPPFLAGS}" \
CFLAGS="${native_CFLAGS}" \
CXXFLAGS="${native_CXXFLAGS}" \
LDFLAGS="${native_LDFLAGS}" \
${CONFIG_SHELL} \
"${gdb_src_dir}/configure" \
--build=${CT_BUILD} \
--host=${CT_TARGET} \
--target=${CT_TARGET} \
--prefix=/usr \
--with-build-sysroot="${CT_SYSROOT_DIR}" \
--without-uiout \
--disable-tui \
--disable-gdbtk \
--without-x \
--disable-sim \
--disable-werror \
--without-included-gettext \
--without-develop \
"${native_extra_config[@]}"
CT_DoLog EXTRA "Building native gdb"
CT_DoExecLog ALL make ${JOBSFLAGS}
CT_DoLog EXTRA "Installing native gdb"
CT_DoExecLog ALL make DESTDIR="${CT_DEBUGROOT_DIR}" install
# Building a native gdb also builds a gdbserver
find "${CT_DEBUGROOT_DIR}" -type f -name gdbserver -exec rm -fv {} \; 2>&1 |CT_DoLog ALL
unset ac_cv_func_strncmp_works
CT_EndStep # native gdb build
fi
if [ "${CT_GDB_GDBSERVER}" = "y" ]; then
local -a gdbserver_extra_config
local gdbserver_CPPFLAGS gdbserver_CFLAGS gdbserver_CXXFLAGS gdbserver_LDFLAGS
CT_DoStep INFO "Installing gdbserver"
CT_DoLog EXTRA "Configuring gdbserver"
mkdir -p "${CT_BUILD_DIR}/build-gdb-gdbserver"
cd "${CT_BUILD_DIR}/build-gdb-gdbserver"
# Workaround for bad versions, where the configure
# script for gdbserver is not executable...
# Bah, GNU folks strike again... :-(
chmod +x "${gdb_src_dir}/gdb/gdbserver/configure"
gdbserver_extra_config=("${extra_config[@]}")
# We may not have C++ language configured for target
if [ "${GDB_TARGET_DISABLE_CXX_BUILD}" = "y" ]; then
gdbserver_extra_config+=("--disable-build-with-cxx")
fi
if [ "${CT_GDB_GDBSERVER_HAS_IPA_LIB}" = "y" ]; then
if [ "${CT_GDB_GDBSERVER_BUILD_IPA_LIB}" = "y" ]; then
gdbserver_extra_config+=("--enable-inprocess-agent")
else
gdbserver_extra_config+=("--disable-inprocess-agent")
fi
fi
# Disable binutils options when building from the binutils-gdb repo.
gdbserver_extra_config+=("--disable-binutils")
gdbserver_extra_config+=("--disable-ld")
gdbserver_extra_config+=("--disable-gas")
gdbserver_CPPFLAGS="${CT_TARGET_CPPFLAGS}"
gdbserver_CFLAGS="${CT_TARGET_CFLAGS}"
gdbserver_CXXFLAGS="${CT_TARGET_CXXFLAGS}"
gdbserver_LDFLAGS="${CT_TARGET_LDFLAGS}"
if [ "${CT_GDB_GDBSERVER_STATIC}" = "y" ]; then
gdbserver_LDFLAGS+=("-static")
fi
if [ "${CT_GDB_GDBSERVER_STATIC_LIBSTDCXX}" = "y" ]; then
gdbserver_LDFLAGS+=("-static-libstdc++")
fi
gdbserver_CPPFLAGS=`echo ${gdbserver_CPPFLAGS}`
gdbserver_CFLAGS=`echo ${gdbserver_CFLAGS}`
gdbserver_CXXFLAGS=`echo ${gdbserver_CXXFLAGS}`
gdbserver_LDFLAGS=`echo ${gdbserver_LDFLAGS}`
CT_DoLog DEBUG "Extra config passed: '${gdbserver_extra_config[*]}'"
CT_DoExecLog CFG \
CPP="${CT_TARGET_CPP}" \
CC="${CT_TARGET_CC}" \
CXX="${CT_TARGET_CXX}" \
LD="${CT_TARGET_LD}" \
CPPFLAGS="${gdbserver_CPPFLAGS}" \
CFLAGS="${gdbserver_CFLAGS}" \
CXXFLAGS="${gdbserver_CXXFLAGS}" \
LDFLAGS="${gdbserver_LDFLAGS}" \
${CONFIG_SHELL} \
"${gdb_src_dir}/gdb/gdbserver/configure" \
--build=${CT_BUILD} \
--host=${CT_TARGET} \
--target=${CT_TARGET} \
--prefix=/usr \
--sysconfdir=/etc \
--localstatedir=/var \
--includedir="${CT_HEADERS_DIR}" \
--with-build-sysroot="${CT_SYSROOT_DIR}" \
--program-prefix= \
--without-uiout \
--disable-tui \
--disable-gdbtk \
--without-x \
--without-included-gettext \
--without-develop \
--disable-werror \
"${gdbserver_extra_config[@]}"
CT_DoLog EXTRA "Building gdbserver"
CT_DoExecLog ALL make ${JOBSFLAGS} CC=${CT_TARGET}-${CT_CC}
CT_DoLog EXTRA "Installing gdbserver"
CT_DoExecLog ALL make DESTDIR="${CT_DEBUGROOT_DIR}" install
CT_EndStep
fi
}