补充20181112：我在安装Alexa的过程中，follow this guidence “Ubuntu Linux Quick Start Guide”,this error occured。

但是按照下面修复了之后才发现出现了另一个错误，

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C SampleApplication:Failed to initialize SampleApplication
Failed to create to SampleApplication!

最后试了好多次才发现，由于之前git clone https://github.com/tatsuhiro-t/nghttp2.git
和
git clone git://github.com/alexa/avs-device-sdk.git
速度太慢了，几k／s，所以用了同事前段时间下载的包。最后我把这两个包换成最新的包，Alexa就成功运行Sample了——

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$ ./SampleApp/src/SampleApp Integration/AlexaClientSDKConfig.json

2018-11-13 03:41:10.454 [  1] I sdkVersion: 1.10.0
configFile Integration/AlexaClientSDKConfig.json
#################################################
#       NOTIFICATION INDICATOR STATE: OFF       #
#################################################

##################################
#       NOT YET AUTHORIZED       #
##################################

################################################################################################
#       To authorize, browse to: 'https://amazon.com/us/code' and enter the code: AMCEMH       #
################################################################################################

#################################################
#       Checking for authorization (1)...       #
#################################################

ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:867:(find_matching_chmap) Found no matching channel map
                  #    #     #  #####      #####  ######  #    #              
                 # #   #     # #     #    #     # #     # #   #               
                #   #  #     # #          #       #     # #  #                
               #     # #     #  #####      #####  #     # ###                 
               #######  #   #        #          # #     # #  #                
               #     #   # #   #     #    #     # #     # #   #               
               #     #    #     #####      #####  ######  #    #              
                                                                              
       #####                                           #                      
      #     #   ##   #    # #####  #      ######      # #   #####  #####      
      #        #  #  ##  ## #    # #      #          #   #  #    # #    #     
       #####  #    # # ## # #    # #      #####     #     # #    # #    #     
            # ###### #    # #####  #      #         ####### #####  #####      
      #     # #    # #    # #      #      #         #     # #      #          
       #####  #    # #    # #      ###### ######    #     # #      #          

       SDK Version 1.10.0

+----------------------------------------------------------------------------+
|                                  Options:                                  |
| Tap to talk:                                                               |
|       Press 't' and Enter followed by your query (no need for the 'Alexa').|
| Hold to talk:                                                              |
|       Press 'h' followed by Enter to simulate holding a button.            |
|       Then say your query (no need for the 'Alexa').                       |
|       Press 'h' followed by Enter to simulate releasing a button.          |
| Stop an interaction:                                                       |
|       Press 's' and Enter to stop an ongoing interaction.                  |
| Playback Controls:                                                         |
|       Press '1' for a 'PLAY' button press.                                 |
|       Press '2' for a 'PAUSE' button press.                                |
|       Press '3' for a 'NEXT' button press.                                 |
|       Press '4' for a 'PREVIOUS' button press.                             |
| Settings:                                                                  |
|       Press 'c' followed by Enter at any time to see the settings screen.  |
| Speaker Control:                                                           |
|       Press 'p' followed by Enter at any time to adjust speaker settings.  |
| Firmware Version:                                                          |
|       Press 'f' followed by Enter at any time to report a different        |
|       firmware version.                                                    |
| Info:                                                                      |
|       Press 'i' followed by Enter at any time to see the help screen.      |
| Reset device:                                                              |
|       Press 'k' followed by Enter at any time to reset your device. This   |
|       will erase any data stored in the device and you will have to        |
|       re-register your device.                                             |
|       This option will also exit the application.                          |
| Reauthorize device:                                                        |
|       Press 'z' followed by Enter at any time to re-authorize your device. |
|       This will erase any data stored in the device and initiate           |
|       re-authorization.                                                    |
| Quit:                                                                      |
|       Press 'q' followed by Enter at any time to quit the application.     |
+----------------------------------------------------------------------------+

#################################################
#       Checking for authorization (2)...       #
#################################################

#################################################
#       Checking for authorization (3)...       #
#################################################

#################################################
#       Checking for authorization (4)...       #
#################################################

#################################################
#       Checking for authorization (5)...       #
#################################################


----------------华丽的分割线----------------------

原文2018111１——

get help from error: curl: /usr/local/lib/libcurl.so.4: no version information available (required by curl)

I also had such problem in installing CMAKE, I type cmake, the output is:

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cmake: /usr/local/lib/libcurl.so.4: no version information available     (required by cmake)
Segmentation fault (core dumped)`

Something like yours.
First,I locate the path of libcurl.so.4:
locate libcurl.so.4

the result is:

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/home/chenjian/software/curl-7.20.0/lib/.libs/libcurl.so.4
/home/chenjian/software/curl-7.20.0/lib/.libs/libcurl.so.4.2.0
/usr/lib/x86_64-linux-gnu/libcurl.so.4
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0
/usr/local/lib/libcurl.so.4
/usr/local/lib/libcurl.so.4.2.0

Second, find the link of libcurl.so.4,type:
ls -l /usr/local/lib/libcurl.so.4

the result:
lrwxrwxrwx 1 root root 16 Aug 16 21:15 /usr/local/lib/libcurl.so.4 -> libcurl.so.4.2.0

Third, remove it and rebuild the link to libcurl.so.4.3.0:

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sudo rm -rf /usr/local/lib/libcurl.so.4
sudo ln -s /usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0 /usr/local/lib/libcurl.so.4

Next, check it:
ls -l /usr/local/lib/libcurl.so.4

well, the output is:

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lrwxrwxrwx 1 root root 42 Aug 24 09:23 /usr/local/lib/libcurl.so.4 -> /usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0

Then, I typecmake -version, and the result is

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cmake version 3.2.2

CMake suite maintained and supported by Kitware (kitware.com/cmake).

After fixing the bug, I think it may be caused by multi-version of curl, like me, the origin ubuntu environment had one, but I install another one.

Thx for CHENJIAN