Re: [Qemu-devel] [QEMU]Add new entries for qemu/configure questions

[harryxiyou]

On Tue, Jan 22, 2013 at 4:43 PM, harryxiyou <address@hidden> wrote:
> Hi all,
>
> We add new entries for qemu/configure(QEMU v1.3.0), which
> can locate our libraries and header files to compile our driver
> for QEMU. The new entries in qemu/configure are like following.
>
> [...]
> 2828 ##########################################
> 2829 # hlfs probe
> 2830 echo "Entering HLFS probe...";
> 2831 sleep 2;
> 2832 if test "$hlfs" != "no" ; then
> 2833     cat > $TMPC <<EOF
> 2834 #include <stdio.h>
> 2835 #include <api/hlfs.h>
> 2836 int main(void) {
> 2837     return 0;
> 2838 }
> 2839 EOF
> 2840 echo "come here";
> 2841     GLIB_DIR1_INC=/usr/lib/glib-2.0/include
> 2842     GLIB_DIR2_INC=/usr/include/glib-2.0
> 2843     HLFS_DIR=/home/jiawei/workshop3/hlfs
> 2844     LOG4C_DIR=$HLFS_DIR/3part/log
> 2845     HDFS_DIR=$HLFS_DIR/3part/hadoop
> 2832 if test "$hlfs" != "no" ; then
> 2833     cat > $TMPC <<EOF
> 2834 #include <stdio.h>
> 2835 #include <api/hlfs.h>
> 2836 int main(void) {
> 2837     return 0;
> 2838 }
> 2839 EOF
> 2840 echo "come here";
> 2841     GLIB_DIR1_INC=/usr/lib/glib-2.0/include
> 2842     GLIB_DIR2_INC=/usr/include/glib-2.0
> 2843     HLFS_DIR=/home/jiawei/workshop3/hlfs
> 2844     LOG4C_DIR=$HLFS_DIR/3part/log
> 2845     HDFS_DIR=$HLFS_DIR/3part/hadoop
> 2846     JVM_DIR=/usr/lib/jvm/java-6-openjdk
> 2847
> 2848     if [ `getconf LONG_BIT` -eq "64" ];then
> 2849         CLIBS="-L$LOG4C_DIR/lib64"
> 2850         CLIBS="-L$HDFS_DIR/lib64 $CLIBS"
> 2851         CLIBS="-L$HLFS_DIR/output/lib64  $CLIBS"
> 2852         CLIBS="-L$JVM_DIR/jre/lib/amd64/server/ $CLIBS"
> 2853         else if [ `getconf LONG_BIT` -eq "32" ];then
> 2854             CLIBS="-L$LOG4C_DIR/lib32"
> 2855             CLIBS="-L$HDFS_DIR/lib32 $CLIBS"
> 2856             CLIBS="-L$JVM_DIR/jre/lib/i386/server $CLIBS"
> 2857             CLIBS="-L$HLFS_DIR/output/lib32  $CLIBS"
> 2858         fi
> 2859     fi
> 2860 echo "CLIBS is............";
> 2861 echo $CLIBS;
> 2862 echo "CLIBS end...........";
> 2863 echo "$libs"
> 2864 sleep 2;
> 2865     CFLAGS="-I$GLIB_DIR1_INC"
> 2866     CFLAGS="-I$GLIB_DIR2_INC $CFLAGS"
> 2867     CFLAGS="-I$HLFS_DIR/src/include $CFLAGS"
> 2868     CFLAGS="-I$LOG4C_DIR/include $CFLAGS"
> 2869 echo "CFLAGS is............";
> 2870 echo $CFLAGS;
> 2871 echo "CFLAGS end...........";
> 2872 sleep 2;
> 2873 #   removed '-llog4c' '-lhdfs'
> 2874     hlfs_libs="$CLIBS -lhlfs -lglib-2.0 -lgthread-2.0 -lrt
> -llog4c -lhdfs -ljvm"
> 2875     if compile_prog "$CFLAGS" "$hlfs_libs" ; then
> 2876         echo "run branch 1";
> 2877         hlfs=yes
> 2878         libs_tools="$libs_tools $hlfs_libs"
> 2879         libs_softmmu="$libs_softmmu $hlfs_libs"
> 2880 #       libs_softmmu="$libs_softmmu $hlfs_libs"
> 2881     else
> 2882         if test "$hlfs" = "yes" ; then
> 2883             echo "run branch 2";
> 2884             feature_not_found "hlfs block device"
> 2885         fi
> 2886         hlfs=no
> 2887     fi
> 2888 fi
> 2889 echo $hlfs_libs;
> 2890 echo "Leave HLFS ...";
> 2891 sleep 2
> 2892
> 2893 ##########################################
> [...]
>
> Unfortunately, it doesn't work. After i execute following commands,
> it shows me libraries which are not pointed to what i set in file
> qemu/configure.
>
> 1. git clone git://git.qemu.org/qemu.git
> 2. cd qemu
> 3, git reset --hard v1.3.0
> 4. cp ../hlfs/patches/hlfs_driver_for_qemu.patch ./
> 5. git apply hlfs_driver_for_qemu.patch
> 6, Modify the dead path
> 7, ./configure
> 8, make
> 9, ldd ./qemu-img
>
> Note:  1, Step 4 just move the patch to qemu dir for later patching.
>           2, Step 6 just set the libraries in my OS.
>
> After up commands, i get
>
> $ ldd ./qemu-img
>         linux-gate.so.1 =>  (0x00355000)
>         librt.so.1 => /lib/tls/i686/cmov/librt.so.1 (0x003ca000)
>         libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x007cf000)
>         libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00110000)
>         libz.so.1 => /lib/libz.so.1 (0x002b3000)
>         libhlfs.so => /usr/lib/libhlfs.so (0x0021c000)
>         liblog4c.so.3 => /usr/lib/liblog4c.so.3 (0x00722000)
>         libhdfs.so.0 => /usr/lib/libhdfs.so.0 (0x00297000)
>         libjvm.so => /usr/lib/libjvm.so (0x00daa000)
>         libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0x002c8000)
>         libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0x0041b000)
>         /lib/ld-linux.so.2 (0x0074f000)
>         libsnappy.so.1 =>
> /home/jiawei/workshop3/hlfs/build/../3part/snappy/lib32/libsnappy.so.1
> (0x00364000)
>         libexpat.so.1 => /lib/libexpat.so.1 (0x002e1000)
>         libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0x002a1000)
>         libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x0057a000)
>         libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0x00309000)
>         libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x0032f000)
>
> I set libhlfs.so point to /home/jiawei/workshop3/hlfs/output/lib32 but,
> in fact, it points to /usr/lib. The same as libhdfs.so and liblog4c.so.
> I guess i have configured qemu/configure not correctly but i am not
> clear about how i should configure? Could anyone give me some
> suggestions? Thanks in advance.
>

It seems that i confused the option '-L' of gcc command and 'ldd' command.
The option '-L' of gcc command just works during compiling but 'ldd' command
shows the dependency libraries during runtime, which can be configured by
'ldconfig' or 'LD_LIBRARY_PATH' but qemu/configure file.
Does anyone has any other ideas?



-- 
Thanks
Harry Wei