1#!/bin/sh
2#
3# Copyright (C) 2010 The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#      http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16#
17#  This shell script is used to rebuild the gdbserver binary from
18#  the Android NDK's prebuilt binaries.
19#
20
21# include common function and variable definitions
22. `dirname $0`/prebuilt-common.sh
23
24PROGRAM_PARAMETERS="<src-dir> <ndk-dir> <toolchain>"
25
26PROGRAM_DESCRIPTION=\
27"Rebuild the gdbserver prebuilt binary for the Android NDK toolchain.
28
29Where <src-dir> is the location of the gdbserver sources,
30<ndk-dir> is the top-level NDK installation path and <toolchain>
31is the name of the toolchain to use (e.g. arm-linux-androideabi-4.6).
32
33The final binary is placed under:
34
35    <ndk-dir>/toolchains <toolchain>/prebuilt/gdbserver
36
37NOTE: The --platform option is ignored if --sysroot is used."
38
39VERBOSE=no
40
41OPTION_BUILD_OUT=
42BUILD_OUT=/tmp/ndk-$USER/build/gdbserver
43register_option "--build-out=<path>" do_build_out "Set temporary build directory"
44do_build_out () { OPTION_BUILD_OUT="$1"; }
45
46PLATFORM=$DEFAULT_PLATFORM
47register_var_option "--platform=<name>"  PLATFORM "Target specific platform"
48
49SYSROOT=
50if [ -d $TOOLCHAIN_PATH/sysroot ] ; then
51  SYSROOT=$TOOLCHAIN_PATH/sysroot
52fi
53register_var_option "--sysroot=<path>" SYSROOT "Specify sysroot directory directly"
54
55NOTHREADS=no
56register_var_option "--disable-threads" NOTHREADS "Disable threads support"
57
58GDB_VERSION=$DEFAULT_GDB_VERSION
59register_var_option "--gdb-version=<name>" GDB_VERSION "Use specific gdb version."
60
61PACKAGE_DIR=
62register_var_option "--package-dir=<path>" PACKAGE_DIR "Archive binary into specific directory"
63
64register_jobs_option
65
66extract_parameters "$@"
67
68setup_default_log_file
69
70set_parameters ()
71{
72    SRC_DIR="$1"
73    NDK_DIR="$2"
74    TOOLCHAIN="$3"
75
76    # Check source directory
77    #
78    if [ -z "$SRC_DIR" ] ; then
79        echo "ERROR: Missing source directory parameter. See --help for details."
80        exit 1
81    fi
82
83    SRC_DIR2="$SRC_DIR/gdb/gdb-$GDB_VERSION/gdb/gdbserver"
84    if [ -d "$SRC_DIR2" ] ; then
85        SRC_DIR="$SRC_DIR2"
86        log "Found gdbserver source directory: $SRC_DIR"
87    fi
88
89    if [ ! -f "$SRC_DIR/gdbreplay.c" ] ; then
90        echo "ERROR: Source directory does not contain gdbserver sources: $SRC_DIR"
91        exit 1
92    fi
93
94    log "Using source directory: $SRC_DIR"
95
96    # Check NDK installation directory
97    #
98    if [ -z "$NDK_DIR" ] ; then
99        echo "ERROR: Missing NDK directory parameter. See --help for details."
100        exit 1
101    fi
102
103    if [ ! -d "$NDK_DIR" ] ; then
104        echo "ERROR: NDK directory does not exist: $NDK_DIR"
105        exit 1
106    fi
107
108    log "Using NDK directory: $NDK_DIR"
109
110    # Check toolchain name
111    #
112    if [ -z "$TOOLCHAIN" ] ; then
113        echo "ERROR: Missing toolchain name parameter. See --help for details."
114        exit 1
115    fi
116}
117
118set_parameters $PARAMETERS
119
120if [ "$PACKAGE_DIR" ]; then
121    mkdir -p "$PACKAGE_DIR"
122    fail_panic "Could not create package directory: $PACKAGE_DIR"
123fi
124
125prepare_target_build
126
127parse_toolchain_name $TOOLCHAIN
128check_toolchain_install $NDK_DIR $TOOLCHAIN
129
130# Check build directory
131#
132fix_sysroot "$SYSROOT"
133log "Using sysroot: $SYSROOT"
134
135if [ -n "$OPTION_BUILD_OUT" ] ; then
136    BUILD_OUT="$OPTION_BUILD_OUT"
137fi
138log "Using build directory: $BUILD_OUT"
139run mkdir -p "$BUILD_OUT"
140
141# Copy the sysroot to a temporary build directory
142BUILD_SYSROOT="$BUILD_OUT/sysroot"
143run mkdir -p "$BUILD_SYSROOT"
144run cp -RHL "$SYSROOT"/* "$BUILD_SYSROOT"
145
146# Remove libthread_db to ensure we use exactly the one we want.
147rm -f $BUILD_SYSROOT/usr/lib/libthread_db*
148rm -f $BUILD_SYSROOT/usr/include/thread_db.h
149
150if [ "$NOTHREADS" != "yes" ] ; then
151    # We're going to rebuild libthread_db.o from its source
152    # that is under sources/android/libthread_db and place its header
153    # and object file into the build sysroot.
154    LIBTHREAD_DB_DIR=$ANDROID_NDK_ROOT/sources/android/libthread_db/gdb-$GDB_VERSION
155    if [ ! -d "$LIBTHREAD_DB_DIR" ] ; then
156        dump "ERROR: Missing directory: $LIBTHREAD_DB_DIR"
157        exit 1
158    fi
159    # Small trick, to avoid calling ar, we store the single object file
160    # with an .a suffix. The linker will handle that seamlessly.
161    run cp $LIBTHREAD_DB_DIR/thread_db.h $BUILD_SYSROOT/usr/include/
162    run $TOOLCHAIN_PREFIX-gcc --sysroot=$BUILD_SYSROOT -o $BUILD_SYSROOT/usr/lib/libthread_db.o -c $LIBTHREAD_DB_DIR/libthread_db.c
163    run $TOOLCHAIN_PREFIX-ar -r $BUILD_SYSROOT/usr/lib/libthread_db.a $BUILD_SYSROOT/usr/lib/libthread_db.o
164    if [ $? != 0 ] ; then
165        dump "ERROR: Could not compile libthread_db.c!"
166        exit 1
167    fi
168fi
169
170log "Using build sysroot: $BUILD_SYSROOT"
171
172# configure the gdbserver build now
173dump "Configure: $TOOLCHAIN gdbserver-$GDB_VERSION build."
174
175case "$GDB_VERSION" in
176    6.6)
177        CONFIGURE_FLAGS="--with-sysroot=$BUILD_SYSROOT"
178        ;;
179    7.3.x)
180        # This flag is required to link libthread_db statically to our
181        # gdbserver binary. Otherwise, the program will try to dlopen()
182        # the threads binary, which is not possible since we build a
183        # static executable.
184        CONFIGURE_FLAGS="--with-libthread-db=$BUILD_SYSROOT/usr/lib/libthread_db.a"
185        # Disable libinproctrace.so which needs crtbegin_so.o and crtbend_so.o instead of
186        # CRTBEGIN/END above.  Clean it up and re-enable it in the future.
187        CONFIGURE_FLAGS=$CONFIGURE_FLAGS" --disable-inprocess-agent"
188        ;;
189    7.6)
190        CONFIGURE_FLAGS="--with-libthread-db=$BUILD_SYSROOT/usr/lib/libthread_db.a"
191        CONFIGURE_FLAGS=$CONFIGURE_FLAGS" --disable-inprocess-agent"
192        ;;
193    *)
194        CONFIGURE_FLAGS=""
195esac
196
197cd $BUILD_OUT &&
198export CC="$TOOLCHAIN_PREFIX-gcc --sysroot=$BUILD_SYSROOT" &&
199export CFLAGS="-O2 $GDBSERVER_CFLAGS"  &&
200export LDFLAGS="-static -Wl,-z,nocopyreloc -Wl,--no-undefined" &&
201run $SRC_DIR/configure \
202--host=$GDBSERVER_HOST \
203$CONFIGURE_FLAGS
204if [ $? != 0 ] ; then
205    dump "Could not configure gdbserver build. See $TMPLOG"
206    exit 1
207fi
208
209# build gdbserver
210dump "Building : $TOOLCHAIN gdbserver."
211cd $BUILD_OUT &&
212run make -j$NUM_JOBS
213if [ $? != 0 ] ; then
214    dump "Could not build $TOOLCHAIN gdbserver. Use --verbose to see why."
215    exit 1
216fi
217
218# install gdbserver
219#
220# note that we install it in the toolchain bin directory
221# not in $SYSROOT/usr/bin
222#
223if [ "$NOTHREADS" = "yes" ] ; then
224    DSTFILE="gdbserver-nothreads"
225else
226    DSTFILE="gdbserver"
227fi
228dump "Install  : $TOOLCHAIN $DSTFILE."
229DEST=$ANDROID_NDK_ROOT/prebuilt/android-$ARCH/gdbserver
230mkdir -p $DEST &&
231run $TOOLCHAIN_PREFIX-objcopy --strip-unneeded $BUILD_OUT/gdbserver $DEST/$DSTFILE
232if [ $? != 0 ] ; then
233    dump "Could not install $DSTFILE. See $TMPLOG"
234    exit 1
235fi
236
237if [ "$PACKAGE_DIR" ]; then
238    ARCHIVE=$ARCH-gdbserver.tar.bz2
239    dump "Packaging: $ARCHIVE"
240    pack_archive "$PACKAGE_DIR/$ARCHIVE" "$ANDROID_NDK_ROOT" "prebuilt/android-$ARCH/gdbserver/$DSTFILE"
241fi
242
243log "Cleaning up."
244if [ -z "$OPTION_BUILD_OUT" ] ; then
245    run rm -rf $BUILD_OUT
246fi
247
248dump "Done."
249