1.下載gdb的源碼 2.編譯：
cd gdb-7.10.1./configure --target=arm-linux --PRefix=$PWD/installed -v解釋一下： –target配置gdb的目標(biāo)平臺; –prefix配置安裝路徑，我在gdb-7.10.1的目錄下創(chuàng)建了installed這個目錄，用來存放編譯后生成的文件。 下面就是開始編譯了。
編譯 make
安裝 make install
至此，gdb安裝完成。
接下來為linux-arm安裝gdbserver
進(jìn)入gdb-7.10.1/gdb/gdbserver
配置
./configure --target=arm-linux --host=arm-linuxmake CC=arm-linux-gcc
沒有錯誤的話就在當(dāng)前路徑下生成gdbserver. 下面是做一下權(quán)限的修改和去掉無關(guān)的調(diào)試信息，這些東西用不到，去掉后還能減少文件大小。
chmod 777 gdbserver arm-linux-strip gdbserver
此時需要注意的是 1.gdbserver這個文件需要通過nfs弄到板子上去，且在板子上運(yùn)行； 2.與gdbserver配套的需要使用剛才編譯gdb時生成的arm-linux-gdb，它在pc上運(yùn)行。
開始調(diào)試： 在板子的終端中運(yùn)行 gdbserver –multi 10.0.14.38:1234 這里沒有指定待調(diào)試的應(yīng)用程序文件名，這個文件名一會將會在pc端使用命令指定，然后pc端的arm-linux-gdb通過網(wǎng)絡(luò)把這寫信息發(fā)給gdbserver。 10.0.14.38這個地址是我的pc端的IP
在PC端運(yùn)行
[zhang@zwfedora23 tmp]$ ./arm-linux-gdb GNU gdb (GDB) 7.10.1Copyright (C) 2015 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law. Type "show copying"and "show warranty" for details.This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=arm-linux".Type "show configuration" for configuration details.For bug reporting instructions, please see:<http://www.gnu.org/software/gdb/bugs/>.Find the GDB manual and other documentation resources online at:<http://www.gnu.org/software/gdb/documentation/>.For help, type "help".Type "apropos Word" to search for commands related to "word".(gdb) target extended-remote 10.0.14.221:1234Remote debugging using 10.0.14.221:1234(gdb) set remote exec-file /mnt/nfs/sample_audio(gdb) file ~/work/60G/my_tools/hi3518-mpp/bak/ mpp/ mpp-2017-02-06-static-ok.tar.bz2 convertfile.sh mpp-2017-01-24-dynamic-ok.tar.bz2 mpp.tgz (gdb) file ~/work/60G/my_tools/hi3518-mpp/bak/ mpp/ mpp-2017-02-06-static-ok.tar.bz2 convertfile.sh mpp-2017-01-24-dynamic-ok.tar.bz2 mpp.tgz (gdb) file ~/work/60G/my_tools/hi3518-mpp/mpp/Makefile.param component/ cscope.out extdrv/ include/ ko/ lib/ sample/ tags tools/ types_c.taghl(gdb) file ~/work/60G/my_tools/hi3518-mpp/mpp/sample/audio/sample_audioReading symbols from ~/work/60G/my_tools/hi3518-mpp/mpp/sample/audio/sample_audio...done.(gdb) b mainBreakpoint 1 at 0xa61c: file sample_audio.c, line 457.(gdb) rStarting program: /home/zhang/work/60G/my_tools/hi3518-mpp/mpp/sample/audio/sample_audio Reading /lib/ld-linux.so.3 from remote target...warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.Reading /lib/ld-linux.so.3 from remote target...Reading /lib/libpthread.so.0 from remote target...Reading /lib/libm.so.6 from remote target...Reading /system/lib/libasound.so.2 from remote target...Reading /usr/lib/librb.so from remote target...Reading /lib/libc.so.6 from remote target...Reading /lib/libdl.so.2 from remote target...Reading /system/lib/librt.so.1 from remote target...Reading /system/lib/libgcc_s.so.1 from remote target...Breakpoint 1, main (argc=1, argv=0xbefffe54) at sample_audio.c:457457 HI_S32 s32Ret= HI_SUCCESS;(gdb) cContinuing.說明： 1.target extended_remote 10.0.14.221:1234 這里的ip是板子的ip。
2.(gdb) set remote exec-file /mnt/nfs/sample_audio 指定在板子上需要運(yùn)行的應(yīng)用程序路徑。
3.file ~/work/60G/my_tools/hi3518-mpp/mpp/sample/audio/sample_audio 指定在PC上需要調(diào)試的應(yīng)用程序的路徑。
接下來就行了。 設(shè)置斷點(diǎn)就可以開始調(diào)試了。
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