android ndk-gdb 无法加载符号

Question

使用 android-ndk-r7b/samples/hello-jni 作为调试起点，我构建了 jni

ndk-build V=1 NDK_DEBUG=1

rm -f ./libs/armeabi/lib*.so ./libs/armeabi-v7a/lib*.so ./libs/x86/lib*.so
rm -f ./libs/armeabi/gdbserver ./libs/armeabi-v7a/gdbserver ./libs/x86/gdbserver
rm -f ./libs/armeabi/gdb.setup ./libs/armeabi-v7a/gdb.setup ./libs/x86/gdb.setup
Gdbserver      : [arm-linux-androideabi-4.4.3] libs/armeabi/gdbserver
mkdir -p ./libs/armeabi
install -p /cygdrive/c/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/gdbserver ./libs/armeabi/gdbserver
Gdbsetup       : libs/armeabi/gdb.setup
mkdir -p ./libs/armeabi
/cygdrive/c/Users/pcarreir/android-ndk-r7b/prebuilt/windows/bin/echo "set solib-search-path ./obj/local/armeabi" > ./libs/armeabi/gdb.setup
/cygdrive/c/Users/pcarreir/android-ndk-r7b/prebuilt/windows/bin/echo "directory C:/Users/pcarreir/android-ndk-r7b/platforms/android-8/arch-arm/usr/include jni C:/Users/pcarreir/android-ndk-r7b/sources/cxx-stl/system" >> ./libs/armeabi/gdb.setup
Cygwin         : Generating dependency file converter script
mkdir -p obj/
mount | awk -f /cygdrive/c/Users/pcarreir/android-ndk-r7b/build/awk/gen-cygwin-deps-converter.awk > obj/convert-dependencies.sh && chmod +x obj/convert-dependencies.sh
Compile thumb  : hello-jni <= hello-jni.c
/cygdrive/c/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/arm-linux-androideabi-gcc -MMD -MP -MF ./obj/local/armeabi/objs-debug/hello-jni/hello-jni.o.d.org -fpic  -ffunction-sections  -funwind-tables  -fstack-protector  -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__  -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__   -Wno-psabi -march=armv5te  -mtune=xscale  -msoft-float  -mthumb  -Os  -fomit-frame-pointer  -fno-strict-aliasing  -finline-limit=64  -Ijni  -DANDROID  -Wa,--noexecstack  -O0 -g  -IC:/Users/pcarreir/android-ndk-r7b/platforms/android-8/arch-arm/usr/include  -c   jni/hello-jni.c -o ./obj/local/armeabi/objs-debug/hello-jni/hello-jni.o  && ./obj/convert-dependencies.sh ./obj/local/armeabi/objs-debug/hello-jni/hello-jni.o.d
SharedLibrary  : libhello-jni.so
/cygdrive/c/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/arm-linux-androideabi-g++  -Wl,-soname,libhello-jni.so  -shared  --sysroot=C:/Users/pcarreir/android-ndk-r7b/platforms/android-8/arch-arm  ./obj/local/armeabi/objs-debug/hello-jni/hello-jni.o    C:/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a    -Wl,--no-undefined -Wl,-z,noexecstack   -lc -lm  -o obj/local/armeabi/libhello-jni.so
Install        : libhello-jni.so => libs/armeabi/libhello-jni.so
mkdir -p ./libs/armeabi
install -p ./obj/local/armeabi/libhello-jni.so ./libs/armeabi/libhello-jni.so
/cygdrive/c/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded ./libs/armeabi/libhello-jni.so

我现在开始调试过程。1.我启动一个模拟器2. 我在eclipse 中调试应用程序。3. 我确保我在 hello-jni 目录中4. 我输入 ndk-gdb --verbose

我看过关于这个主题的其他帖子，ndk-gdb 输出似乎总是以如下所示的内容结尾

warning: shared library handler failed to enable breakpoint
0xafd0c51c in epoll_wait () from /home/zayac/code/android-ndk-r5/samples/hello-jni2/obj/local/armeabi/libc.so

看来它已经准备好与“epoll_wait (...)”文本一起使用了。

当我运行 ndk-gdb --verbose 时，我从未看到该文本。我只是得到警告和 (gdb) 提示。这是输出...

  
Android NDK installation path: /cygdrive/c/Users/pcarreir/android-ndk-r7b
Using default adb command: /cygdrive/c/Program Files (x86)/Android/android-sdk/platform-tools/adb
ADB version found: Android Debug Bridge version 1.0.29
Using ADB flags:
Using auto-detected project path: .
Found package name: com.example.hellojni
ABIs targetted by application: armeabi
Device API Level: 10
Device CPU ABI: armeabi
Compatible device ABI: armeabi
Found debuggable flag: true
Found device gdbserver: /data/data/com.example.hellojni/lib/gdbserver
Using gdb setup init: ./libs/armeabi/gdb.setup
Using toolchain prefix: /cygdrive/c/Users/pcarreir/android-ndk-r7b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/arm-linux-androideabi-
Using app out directory: ./obj/local/armeabi
Found data directory: '/data/data/com.example.hellojni'
Found running PID: 7806
Launched gdbserver succesfully.
Setup network redirection
## COMMAND: /cygdrive/c/Program Files (x86)/Android/android-sdk/platform-tools/adb shell run-as com.example.hellojni lib/gdbserver +debug-socket --attach 7806
## COMMAND: /cygdrive/c/Program Files (x86)/Android/android-sdk/platform-tools/adb forward tcp:5039 localfilesystem:/data/data/com.example.hellojni/debug-socket
Attached; pid = 7806
## COMMAND: /cygdrive/c/Program Files (x86)/Android/android-sdk/platform-tools/adb pull /system/bin/app_process obj/local/armeabi/app_process
Listening on sockaddr socket debug-socket
19 KB/s (5660 bytes in 0.284s)
Pulled app_process from device/emulator.
## COMMAND: /cygdrive/c/Program Files (x86)/Android/android-sdk/platform-tools/adb pull /system/lib/libc.so obj/local/armeabi/libc.so
56 KB/s (273868 bytes in 4.730s)
Pulled libc.so from device/emulator.
GNU gdb 6.6
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i586-mingw32msvc --target=arm-elf-linux".
(no debugging symbols found)
Error while mapping shared library sections:
/system/bin/linker: No such file or directory.
Error while mapping shared library sections:
libc.so: No such file or directory.
Error while mapping shared library sections:
libstdc++.so: No such file or directory.
Error while mapping shared library sections:
libm.so: No such file or directory.
Error while mapping shared library sections:
liblog.so: No such file or directory.
Error while mapping shared library sections:
libcutils.so: No such file or directory.
Error while mapping shared library sections:
libz.so: No such file or directory.
Error while mapping shared library sections:
libutils.so: No such file or directory.
Error while mapping shared library sections:
libbinder.so: No such file or directory.
Error while mapping shared library sections:
libexpat.so: No such file or directory.
Error while mapping shared library sections:
libcrypto.so: No such file or directory.
Error while mapping shared library sections:
libicuuc.so: No such file or directory.
Error while mapping shared library sections:
libicui18n.so: No such file or directory.
Error while mapping shared library sections:
libsqlite.so: No such file or directory.
Error while mapping shared library sections:
libssl.so: No such file or directory.
Error while mapping shared library sections:
libnativehelper.so: No such file or directory.
Error while mapping shared library sections:
libnetutils.so: No such file or directory.
Error while mapping shared library sections:
libEGL.so: No such file or directory.
Error while mapping shared library sections:
libwpa_client.so: No such file or directory.
Error while mapping shared library sections:
libhardware_legacy.so: No such file or directory.
Error while mapping shared library sections:
libpixelflinger.so: No such file or directory.
Error while mapping shared library sections:
libhardware.so: No such file or directory.
Error while mapping shared library sections:
libui.so: No such file or directory.
Error while mapping shared library sections:
libgui.so: No such file or directory.
Error while mapping shared library sections:
libsurfaceflinger_client.so: No such file or directory.
Error while mapping shared library sections:
libcamera_client.so: No such file or directory.
Error while mapping shared library sections:
libemoji.so: No such file or directory.
Error while mapping shared library sections:
libjpeg.so: No such file or directory.
Error while mapping shared library sections:
libskia.so: No such file or directory.
Error while mapping shared library sections:
libGLESv1_CM.so: No such file or directory.
Error while mapping shared library sections:
libskiagl.so: No such file or directory.
Error while mapping shared library sections:
libdvm.so: No such file or directory.
Error while mapping shared library sections:
libGLESv2.so: No such file or directory.
Error while mapping shared library sections:
libETC1.so: No such file or directory.
Error while mapping shared library sections:
libsonivox.so: No such file or directory.
Error while mapping shared library sections:
libmedia.so: No such file or directory.
Error while mapping shared library sections:
libnfc_ndef.so: No such file or directory.
Error while mapping shared library sections:
libandroid_runtime.so: No such file or directory.
Error while mapping shared library sections:
libvorbisidec.so: No such file or directory.
Error while mapping shared library sections:
libstagefright_amrnb_common.so: No such file or directory.
Error while mapping shared library sections:
libstagefright_enc_common.so: No such file or directory.
Error while mapping shared library sections:
libstagefright_avc_common.so: No such file or directory.
Error while mapping shared library sections:
libstagefright_foundation.so: No such file or directory.
Error while mapping shared library sections:
libstagefright_color_conversion.so: No such file or directory.
Error while mapping shared library sections:
libstagefright.so: No such file or directory.
Error while mapping shared library sections:
libmedia_jni.so: No such file or directory.
Error while 0xafd0c738 in ?? ()
gdb: Unable to get location for thread creation breakpoint: requested event is not supported
mapping shared library sections:
libexif.so: No such file or directory.
Error while mapping shared library sections:
libsoundpool.so: No such file or directory.
Error while mapping shared library sections:
libstlport.so: No such file or directory.
Error while mapping shared library sections:
libwebcore.so: No such file or directory.
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.
warning: shared library handler failed to enable breakpoint
(gdb)

当我输入类似list 的gdb 命令时，我得到

(gdb) No symbol table is loaded. Use the "file" command.

任何帮助都会很棒!

Answer 1

我遇到了同样的问题，因为 libs/armeabi/gdb.setup 包含 CR (CRLF) 字符。在开发主机(项目目录)上删除它们后，它无需重新安装即可工作。

gdb.setup 似乎是由 ndk-build 编写的，它似乎在 Windows 上引入了 CR 字符(而不是在 Linux 上)。