今天运行一个例程，出现了/lib64/libc.so.6: version `GLIBC_2.14' not found问题，把解决过程简单记录一下。
系统环境： centos6.2
现象：
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[root@localhost nvEncodeApp]
# ./nvEncoder
.
/nvEncoder
:
/lib64/libc
.so.6: version `GLIBC_2.14' not found (required by .
/nvEncoder
)
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好吧，人家需要的是'GLIBC_2.14'，先查看一下当前系统glibc的情况：
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[root@localhost build]
# strings /lib64/libc.so.6 |grep GLIBC
GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.3
GLIBC_2.3.2
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
GLIBC_2.5
GLIBC_2.6
GLIBC_2.7
GLIBC_2.8
GLIBC_2.9
GLIBC_2.10
GLIBC_2.11
GLIBC_2.12
GLIBC_PRIVATE
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好吧，确实没有，那简单粗暴，安装一下。
1. glibc下载
从http://www.gnu.org/software/libc/ 下载源代码。我下载的版本是2.14，链接地址是http://ftp.gnu.org/gnu/glibc/glibc-2.14.tar.gz。
2. 安装
因为glibc库使用广泛，为了避免污染当前系统环境，最好自定义安装目录，使用时定义一下环境变量就行了。具体步骤如下：
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[root@localhost ~]
# tar xvf glibc-2.14.tar.gz
[root@localhost ~]
# cd glibc-2.14
[root@localhost glibc-2.14]
# mkdir build
[root@localhost glibc-2.14]
# cd ./build
[root@localhost build]
# ../configure --prefix=/opt/glibc-2.14
[root@localhost build]
# make -j4
[root@localhost build]
# make install
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3. 测试
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[root@localhost nvEncodeApp]
# export LD_LIBRARY_PATH=/opt/glibc-2.14/lib:$LD_LIBRARY_PATH
[root@localhost nvEncodeApp]
# ./nvEncoder
Error! Command line paramters -outFile is required
in
order to run this application
[ NVENC 3.0 Command Line Encoder]
Usage: nvEncoder -configFile=config.txt -numFramesToEncode=numFramesToEncode -outFile=output.264
> Encoder Test Application Parameters
[maxNumberEncoders=n] n=number of encoders to use when multiple GPUs are detected
> Optional Parameters to be Set from ConfigFile Or from Command Line
[frameNum] Start Frame (within input
file
)
[bitrate] Video Bitrate of output
file
(eg: n=6000000
for
6 mbps)
[maxbitrate] Video Bitrate of output
file
(eg: n=6000000
for
6 mbps)
[rcMode] Rate Control Mode (0=Constant QP, 1=VBR, 2=CBR, 4=VBR_MinQP, 8=Two-Pass CBR
[enableInitialRCQP] Enable Initial Frame RC QP mode setting
[initialQPI] Initial Frame QP
for
Intra Frame
[initialQPP] Initial Frame QP
for
Inter P-Frame
[initialQPB] Initial Frame QP
for
Inter B-Frame
[frameRateNum] Frame Rate numerator (default = 30000) (numerator
/denominator
= 29.97fps)
[frameRateDen] Frame Rate denominator (default = 1001)
[gopLength] Specify GOP length (N=distance between I-Frames)
[profile] H.264 Codec Profile (n=profile
#)
66 = (Baseline)
77 = (Main Profile)
100 = (High Profile)
[numSlices] Specify Number of Slices to be encoded per Frame
[preset] Specify the encoding preset
-1 = No preset
0 = NV_ENC_PRESET_DEFAULT
1 = NV_ENC_PRESET_LOW_LATENCY_DEFAULT
2 = NV_ENC_PRESET_HP
3 = NV_ENC_PRESET_HQ
4 = NV_ENC_PRESET_BD
5 = NV_ENC_PRESET_LOW_LATENCY_HQ
6 = NV_ENC_PRESET_LOW_LATENCY_HP
[numBFrames] Number fo B frames between P successive frames
[syncMode] Run NvEnc
in
sync
Mode
if
set
[interfaceType] Run NvEnc at specified Interface
0 = (DX9)
1 = (DX11)
2 = (cuda)
3 = (DX10)
[vbvBufferSize] HRD buffer size. For low latancy it should be
less
or equal to single frame size
[vbvInitialDelay] Initial HRD bufffer Fullness
[fieldMode] Field Encoding Mode (0=Frame, 1=Field)
[level]) Codec Level value
[inFile]) InputClip
[enablePtd])
if
set
picture
type
decision will be taken by EncodeAPI
[reconfigFile] Reconfiguration will occur after the frameNum mentioned
in
reconfig
file
with specified parameter
in
reconfig
file
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