Install Guacamole for Remote Linux/Windows Access in Ubuntu

As a system administrator, you may find yourself (today or in the future) working in an environment where Windows and Linux coexist.

It is no secret that some big companies prefer (or have to) run some of their production services in Windows boxes and others in Linux servers.

[ You might also like: 11 Best Tools to Access Remote Linux Desktop ]

If that is your case, you will welcome this guide with open arms (otherwise go ahead and at least make sure to add it to your bookmarks).

Install Guacamole for Remote Desktop and SSH Access
Install Guacamole for Remote Desktop and SSH Access

In this article, we will introduce you to guacamole, a remote desktop gateway powered by Tomcat that only needs to be installed on a central server.

[ You might also like: How to Access Remote Linux Desktop Using TightVNC ]

Guacamole will provide a web-based control panel that will allow you to switch quickly from one machine to another – all within the same web browser window.

Testing Environment

In this article, we have used the following machines. We will install Guacamole in an Ubuntu box and use it to access a Windows 10 box over Remote Desktop Protocol (RDP) and an RHEL box using SSH network protocol:

Guacamole server: Ubuntu 20.04 - IP 192.168.0.100
Remote SSH box: RHEL 8 – IP 192.168.0.18
Remote desktop box: Windows 10 – IP 192.168.0.19

That said, let’s get started.

Installing Guacamole Server in Ubuntu

1. Before installing guacamole, you will need to take care of its dependencies first.

$ sudo apt update
$ sudo apt install -y gcc vim curl wget g++ libcairo2-dev libjpeg-turbo8-dev libpng-dev \
libtool-bin libossp-uuid-dev libavcodec-dev libavutil-dev libswscale-dev build-essential \
libpango1.0-dev libssh2-1-dev libvncserver-dev libtelnet-dev freerdp2-dev libwebsockets-dev \
libssl-dev libvorbis-dev libwebp-dev tomcat9 tomcat9-admin tomcat9-user

2. Download and extract the tarball. As of early February 2021, the latest version of Guacamole is 1.3.0. You can refer to the Guacamole Downloads page to find out the latest version at a given time.

$ wget https://dlcdn.apache.org/guacamole/1.3.0/source/guacamole-server-1.3.0.tar.gz 
$ tar zxf guacamole-server-1.3.0.tar.gz  

3. Compile the software.

$ cd guacamole-server-1.3.0/
$ ./configure

As it is to be expected, configure will check your system for the presence of the required dependencies and for supported communication protocols (as can be seen in the highlighted square, Remote Desktop Protocol (RDP) and SSH are supported by the dependencies installed earlier).

If everything goes as expected you should see this when it completes (otherwise, make sure you installed all the necessary dependencies):

Guacamole Server Installation
Guacamole Server Installation

As the last line in the above image suggests, run make and make install to compile the program:

$ make 
$ sudo make install

4. Update the cache of installed libraries.

$ sudo ldconfig 

and hit Enter.

Installing Guacamole Client in Ubuntu

After completing the above steps, the guacamole server will have been installed. The following instructions will now help you to set up guacd (the proxy daemon that integrates Javascript with communication protocols such as RDP or SSH) and guacamole.war (the client), the component that makes up the final HTML5 application that will be presented to you.

Note that both components (guacamole server and client) need to be installed on the same machine – there is no need to install a so-called client on the machines you want to connect to).

To download the client, follow these steps:

5. Download the web application archive and change its name to guacamole.war.

Note: Depending on your distribution, the Tomcat libraries directory may be located at /var/lib/tomcat.

$ cd /var/lib/tomcat9/
$ sudo wget https://dlcdn.apache.org/guacamole/1.3.0/binary/guacamole-1.3.0.war
$ sudo mv guacamole-1.3.0.war webapps/guacamole.war

6. Create the configuration file (/etc/guacamole/guacamole.properties). This file contains the instructions for Guacamole to connect to guacd:

$ sudo mkdir /etc/guacamole
$ sudo mkdir /usr/share/tomcat9/.guacamole
$ sudo nano /etc/guacamole/guacamole.properties

Insert the following contents to /etc/guacamole/guacamole.properties. Note that we are referencing a file we will create in the next step (/etc/guacamole/user-mapping.xml):

guacd-hostname: localhost
guacd-port:    4822
user-mapping:    /etc/guacamole/user-mapping.xml
auth-provider:    net.sourceforge.guacamole.net.basic.BasicFileAuthenticationProvider
basic-user-mapping:    /etc/guacamole/user-mapping.xml

And create a symbolic link for Tomcat to be able to read the file:

$ sudo ln -s /etc/guacamole/guacamole.properties /usr/share/tomcat9/.guacamole/

7. Guacamole uses the user-mapping.xml, create this file to define which users are allowed to authenticate to the Guacamole web interface (between <authorize> tags) and which connections they can use (between <connection> tags):

$ sudo nano /etc/guacamole/user-mapping.xml

The following user mapping grants access to the Guacamole web interface to a user tecmint with password tecmint01. Then, inside the SSH connection, we need to place a valid username to log in to the RHEL box (you will be prompted to enter the corresponding password when Guacamole initiates the connection).

In the case of the Windows 10 box, there is no need to do that as we will be presented with the login screen over RDP.

To obtain the md5 hash of the password tecmint01, type the following command:

# printf '%s' "tecmint01" | md5sum

Then insert the output of the command in the password field inside the <authorize> tags:

<user-mapping>
        <authorize 
                username="tecmint" 
                password="8383339b9c90775ac14693d8e620981f" 
                encoding="md5">
                <connection name="RHEL 8">
                        <protocol>ssh</protocol>
                        <param name="hostname">192.168.0.18</param>
                        <param name="port">22</param>
                        <param name="username">gacanepa</param>
                </connection>
                <connection name="Windows 10">
                        <protocol>rdp</protocol>
                        <param name="hostname">192.168.0.19</param>
                        <param name="port">3389</param>
                </connection>
        </authorize>
</user-mapping>

As it is the case with all files that contain sensitive information, it is important to restrict the permissions and change the ownership of the user-mapping.xml file:

$ sudo chmod 600 /etc/guacamole/user-mapping.xml
$ sudo chown tomcat:tomcat /etc/guacamole/user-mapping.xml

Start Tomcat and guacd.

$ sudo service tomcat9 start
$ sudo /usr/local/sbin/guacd &

Launching the Guacamole Web Interface

8. To access the Guacamole web interface, launch a browser and point it to http://server:8080/guacamole where the server is the hostname or IP address of your server (in our case it is http://192.168.0.100:8080/guacamole) and log in with the credentials given earlier (username: tecmint, password: tecmint01):

Apache Guacamole Login
Apache Guacamole Login

9. After clicking on Login, you will be taken to the administrative interface where you will see the list of connections user tecmint has access to, as per user-mapping.xml:

Guacamole User Connections
Guacamole User Connections

10. Go ahead and click on the RHEL 8 box to log in as gacanepa (the username specified in the connection definition).

Note how the connection source is set to 192.168.0.100 (the IP of the Guacamole server), regardless of the IP address of the machine that you use to open the web interface:

Guacamole: Access Remote Linux
Guacamole: Access Remote Linux

11. If you want to close the connection, type exit and hit Enter. You will be prompted to return to the main interface (Home), reconnect, or log out from Guacamole:

Guacamole Session Disconnection
Guacamole Session Disconnection

12. Now it’s time to try the remote desktop connection to Windows 10:

Connect Windows Machine from Linux
Connect Windows Machine from Linux

Congratulations! Now you can access a Windows 10 machine and an RHEL 8 server from within a web browser.

Summary

In this article, we have explained how to install and configure Guacamole to allow access to remote machines over RDP and SSH. The official website provides extensive documentation to help you set up access using other protocols, such as VNC and other authentication mechanisms, such as DB-based…

As always, don’t hesitate to drop us a note if you have any questions or suggestions about this article. We also look forward to hearing your success stories.

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Gabriel Cánepa
Gabriel Cánepa is a GNU/Linux sysadmin and web developer from Villa Mercedes, San Luis, Argentina. He works for a worldwide leading consumer product company and takes great pleasure in using FOSS tools to increase productivity in all areas of his daily work.

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71 Comments

Leave a Reply
  1. Please use real ASCII drawings!

                                                      .-----.
                                                      | RDP |
                                                    ^ '-----'
                            .-------------------.  /
    .-------------------.   | Servlet Container | /   .-----.
    | HTML5 Web Browser |-->| (such as Tomcat)  |---->| VNC |
    '-------------------'   | Guacamole Server  | \   '-----'
                            '-------------------'  \
                                                    v .-----.
                                                      | SSH |
                                                      '-----'
    
    Reply
  2. Hello,

    Thanks for the post but I’m having an error. An internal error has occurred within the Guacamole server, and the connection has been terminated. If the problem persists, please notify your system administrator, or check your system logs.

    thanks

    Reply
  3. Hi there,

    in step 1 you are missing dependencies for Kubernetes (libwebsockets) and RDP (FreeRDP) – as shown in step 3… For anyone wondering, just run this command between step 1 and step 2:

    $ sudo apt install -y freerdp2-dev libwebsockets-dev
    

    anyway, thanks for the tutorial =)

    Reply
  4. Thanks for documentation and install tutorial.

    Kindly guide us how to integrate with Active Directory users group can automatically login with there user name.How AD user can access the Machine using two factor authentication.??

    Reply
  5. Hi,

    I am getting below error, please help to resovle.

    Protocol "rdp" selected
    Oct  2 14:56:17 kaarRDP guacd[22166]: Connection ID is "$d673354c-cd35-4db7-b196-078c60a0fed5"
    Oct  2 14:56:17 kaarRDP guacd[22166]: No security mode specified. Defaulting to RDP.
    Oct  2 14:56:17 kaarRDP guacd[22166]: Loading keymap "base"
    Oct  2 14:56:17 kaarRDP guacd[22166]: Loading keymap "en-us-qwerty"
    Oct  2 14:56:17 kaarRDP guacd[22166]: Failed to load guacdr plugin. 
    Drive redirection and printing will not work. Sound MAY not work.
    Oct  2 14:56:17 kaarRDP guacd[22166]: Failed to load guacsnd alongside guacdr plugin. 
    Sound will not work. Drive redirection and printing MAY not work.
    Oct  2 14:56:17 kaarRDP guacd[22166]: Error connecting to RDP server
    Oct  2 14:56:17 kaarRDP guacd[22166]: Connection did not succeed
    
    Reply
  6. Thanks for your tutorial,

    I have guacamole installed on vps actually it remote access a local pc with DHCP IP,

    My question is how to switch from one machine to another – all within the same web browser window ?

    Reply
  7. Thanks for the tutorial.

    I had to make following changes to make it work with 0.9.14 release:
    step 2. Download and extract the tarball.
    extract the gauc-client tarball to /var/lib/tomcat7/webapps.

    step 6. add following line to configuration file (/etc/guacamole/guacamole.properties)

    # Location to read extra .jar's from
    lib-directory:  /var/lib/tomcat7/webapps/guacamole/WEB-INF/classes
    

    I hope it helps others find it helpful.

    Please update the tutorial for 0.9.14 release.

    Reply
  8. Thank’s for the discovery of guacamole. I have to take a look at this very interesting program !

    I hope it can help me to replace the client side of vnc on my servers (clients computers)

    Thank you again !

    Reply
  9. Thanks and very help full post. thank you so much. But I want to run only application on web, please help how we can access windows or Linux application from web browsers. i know one method that is using SSH in which we can access apps from Linux to windows and vice versa by enabling x11 forwarding in ssh conf file. but that uses commands, but i want to make access to those apps using GUI. either from browser or app. So can you help me with that?

    Reply
  10. Thanks and very help full post. thank you so much. But I want to run only application on web, please help how we can access windows or Linux application from web browsers.

    Reply
  11. Hi,
    I have done the same steps, but finally i am facing 404 status error.

    HTTP Status 404 – /guacamole

    type Status report

    message /guacamole

    description The requested resource is not available.
    Apache Tomcat/7.0.64 (Ubuntu)

    any idea where am i missed something?

    Reply
  12. Hello,
    Thanks for the post but Im having the error HTTP Status 404 – /guacamole, im using linux mint as server.

    thanks.

    Reply
  13. Hi Gabriel,

    I have followed your instructions in a Google Cloud Platform. Put Guaca in a ubuntu box. And I have to other instances, Linux, and windows which I am trying to reach. I can see the Linux machine, but the other windows instance, no success. It even doesn’t appear in the connections dashboard. It says connections error. Any ide? Thanks in advance!

    Reply
  14. Hi Gabriel,

    How do we connect to Connection Machine without Guacamole authorized user, once we generate the link can we connect to it without login?

    Thanks,
    Gulab Pasha

    Reply
  15. Hi Gabriel,

    thanks for the tut. Unfortunately I can’t login. The user mapping seems to be unrecognized even when I link the guacamole.properties file to .guacamole folder in tomcat7s home dir, /usr/share/tomcat7/.guacamole. I’m running Debian 8.5 and installed the server via apt-get install instead of compiling it myself.

    Do you have any idea?

    Reply
  16. For anyone else stuck on this where you get a 404 status.

    Move the guacamole.war file to the Webapps folder within your “tomcat7” folder.

    Reply
  17. Thanks for your clear explanation. But i suggest you to revise the article’s title to :
    Setting Up Guacamole Server on Linux to allow Remote Access via web browser
    i think that title is more SEO friendly :-)

    Reply
  18. Thanks for your clear explanation. But i suggest you to revise the article’s title to :
    Setting Up Web-Based Guacamole Tool to allow Remote Access from Linux/Windows Machines

    Reply
  19. Hi Gabriel – great article ! A quick question – can I use Guacamole as a central server in the cloud as I have multiple customers (am a Managed Service Provider) that i would like to Remote Desktop to for support issues?

    For example I have customer A on a public IP with internal LAN and Customer B with different public IP but with the same internal LAN address set-up as Customer A.

    With this as a Web HTML 5 request and I have either Port forwarding on the firewall accepting my public IP on port 80 or 443 (or a site to site VPN – which I don’t like due to security and overhead) would Guacamole work in a multi tenant environment?

    Reply
    • @Wallis,
      I must confess I’ve never tried Guacamole in such an environment, but given that you are considering to set up port forwarding (and I assume permissions as well) on the firewall, I would definitely give Guacamole a try.

      Reply
  20. Thanks, the official documentation is not really simple to use for beginners. Your tutorial is complete and usefull to start from scratch, it helps me.

    Reply
    • @Bobleponge,
      First off, nice nickname :). Thank you for taking the time to comment. I’m glad you found this article useful.

      Reply
    • @Deepak,

      Thanks for finding this article very helpful for beginners like you, hope you managed to setup guacamole on Linux…

      Reply
  21. make fails on Fedora 22:

    Makefile:1105: recipe for target ‘guacdr_client_la-rdp_stream.lo’ failed
    make[3]: *** [guacdr_client_la-rdp_stream.lo] Error 1
    make[3]: Leaving directory ‘/opt/guacamole-server-0.9.9/src/protocols/rdp’
    Makefile:724: recipe for target ‘all’ failed
    make[2]: *** [all] Error 2
    make[2]: Leaving directory ‘/opt/guacamole-server-0.9.9/src/protocols/rdp’
    Makefile:463: recipe for target ‘all-recursive’ failed
    make[1]: *** [all-recursive] Error 1
    make[1]: Leaving directory ‘/opt/guacamole-server-0.9.9’
    Makefile:394: recipe for target ‘all’ failed
    make: *** [all] Error 2
    [root@erdos guacamole-server-0.9.9]# Makefile:1105: recipe for target ‘guacdr_client_la-rdp_stream.lo’ failed
    bash: Makefile:1105:: command not found…

    Reply
  22. I have installed guacomole 0.9.9 on Debian Jessie and Tomcat8.
    If i try to login to guacomole, it tries immediately to connect to the first . The 2nd login goes automatically.
    Why? How to prevent it?
    I don’t what is here wrong? Please help me….
    Thanx Jan

    vnc
    localhost
    5901
    12345

    Reply
    • It should be: “connect to the first connection in user-mapping”
      If I delete the whole section connection … /connection
      I can see the home site of guacamole with empty connections part.

      Is it a feature, that after first login coms directly the 2nd one???
      Thanks Jan

      Reply
      • @Jan,
        I must confess I don’t fully understand your issue. Can you explain with screenshots what is the current behavior and what is what you are expecting?

        Reply
  23. Thank you for this awesome guide. However, I have followed all the steps just as outlined but am unable to get an interface in the browser. instead, I get
    HTTP Status 404 – /guacamole

    type Status report

    message /guacamole

    description The requested resource is not available.
    Apache Tomcat/7.0.52 (Ubuntu)

    What did i get wrong, or what more do I need to do?
    Thanks for the help!

    Reply
    • @Tosin,
      Thank you for taking the time to comment. Please make sure, as other readers have noted, that the guacamole.war file must be located in the webapps directory. Please try and get back to us if it still doesn’t work.

      Reply
    • Thank you all. I have reviewed the config and followed the instructions as pointed out. Issue solved now. Gracias!

      Reply
  24. Hi gabriel, good article. But, when I tested with my VM (CentOS 6.7), when I started Tomcat, the system displays this:

    org.apache.jasper.JasperException: Unable to compile class for JSP:

    An error occurred at line: [1] in the generated java file: [/usr/share/tomcat/work/Catalina/localhost/_/org/apache/jsp/index_jsp.java]
    The type java.util.Map$Entry cannot be resolved. It is indirectly referenced from required .class files

    Some help?

    Reply
  25. Sorry – that was a ./configure && make && make install
    on
    Linux 2.6.18-408.el5.centos.plus i686 i686 i386
    CentOS release 5.11 (Final)

    I know it’s old but it’s a non-PAE machine

    Reply
    • @Joe,
      You have two options:
      1) Check that the dependencies you installed (listed in this article) are the right ones for CentOS 5, and then try again.
      2) This guide (https://deviantengineer.com/2013/10/guacamole/) contains the instructions to install Guacamole on CentOS 6 – not exactly the same thing, but it’s definitely closer than 7.
      Let us know how it goes.

      Reply
  26. No go:

    ————————————————
    guacamole-server version 0.9.9
    ————————————————

    Library status:

    freerdp …………. yes
    pango …………… yes
    libssh2 …………. yes
    libssl ………….. yes
    libtelnet ……….. no
    libVNCServer …….. no
    libvorbis ……….. yes
    libpulse ………… no
    libwebp …………. no

    Protocol support:

    RDP ……. yes
    SSH ……. yes
    Telnet …. no
    VNC ……. no

    Init scripts: no

    Type “make” to compile guacamole-server.

    make all-recursive
    make[1]: Entering directory `/root/guacamole-server-0.9.9′
    Making all in src/libguac
    make[2]: Entering directory `/root/guacamole-server-0.9.9/src/libguac’
    CC libguac_la-audio.lo
    In file included from ./guacamole/client.h:43,
    from audio.c:28:
    /usr/include/cairo/cairo.h:41:28: error: cairo-features.h: No such file or directory
    In file included from ./guacamole/client.h:43,
    from audio.c:28:
    /usr/include/cairo/cairo.h:55: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_public’
    /usr/include/cairo/cairo.h:58: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘const’
    /usr/include/cairo/cairo.h:265: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_t’
    /usr/include/cairo/cairo.h:268: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_t’
    /usr/include/cairo/cairo.h:271: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:274: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:277: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:280: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:283: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:286: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:289: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:314: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:317: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:320: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:323: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:328: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:334: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:357: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:388: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:391: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:408: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:417: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:420: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:426: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:429: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:432: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:435: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:438: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:442: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:446: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:449: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:452: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:455: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:458: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:462: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:465: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:468: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:471: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:474: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:480: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:486: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:500: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:503: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:506: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:512: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:522: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:526: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:529: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:533: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:537: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:543: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:546: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:549: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:552: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:555: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:558: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:562: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_bool_t’
    /usr/include/cairo/cairo.h:565: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_bool_t’
    /usr/include/cairo/cairo.h:569: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:574: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:580: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:583: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:586: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:815: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_options_t’
    /usr/include/cairo/cairo.h:818: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_options_t’
    /usr/include/cairo/cairo.h:821: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:824: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:827: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:830: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_bool_t’
    /usr/include/cairo/cairo.h:834: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘unsigned’
    /usr/include/cairo/cairo.h:837: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:840: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_antialias_t’
    /usr/include/cairo/cairo.h:843: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:846: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_subpixel_order_t’
    /usr/include/cairo/cairo.h:849: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:852: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_hint_style_t’
    /usr/include/cairo/cairo.h:855: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:858: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_hint_metrics_t’
    /usr/include/cairo/cairo.h:864: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:870: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:873: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:877: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:881: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:885: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:889: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:893: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:896: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:899: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_face_t’
    /usr/include/cairo/cairo.h:902: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:906: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:909: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:914: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:920: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:923: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:928: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_face_t’
    /usr/include/cairo/cairo.h:931: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:934: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:980: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_type_t’
    /usr/include/cairo/cairo.h:983: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:987: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:995: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_scaled_font_t’
    /usr/include/cairo/cairo.h:1001: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_scaled_font_t’
    /usr/include/cairo/cairo.h:1004: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1007: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1010: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_type_t’
    /usr/include/cairo/cairo.h:1013: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1017: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1022: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1028: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_font_face_t’
    /usr/include/cairo/cairo.h:1031: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1035: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1039: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1045: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_operator_t’
    /usr/include/cairo/cairo.h:1048: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1051: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘double’
    /usr/include/cairo/cairo.h:1054: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_antialias_t’
    /usr/include/cairo/cairo.h:1057: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1060: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_fill_rule_t’
    /usr/include/cairo/cairo.h:1063: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘double’
    /usr/include/cairo/cairo.h:1066: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_line_cap_t’
    /usr/include/cairo/cairo.h:1069: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_line_join_t’
    /usr/include/cairo/cairo.h:1072: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘double’
    /usr/include/cairo/cairo.h:1077: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1080: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1083: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1188: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_path_t’
    /usr/include/cairo/cairo.h:1191: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_path_t’
    /usr/include/cairo/cairo.h:1194: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1198: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1203: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1206: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘const’
    /usr/include/cairo/cairo.h:1211: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1217: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1220: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1223: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1226: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1280: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_type_t’
    /usr/include/cairo/cairo.h:1283: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_content_t’
    /usr/include/cairo/cairo.h:1299: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1303: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1309: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1313: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1316: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1319: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1326: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1331: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1336: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1385: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1390: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_surface_t’
    /usr/include/cairo/cairo.h:1397: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘unsigned’
    /usr/include/cairo/cairo.h:1400: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_format_t’
    /usr/include/cairo/cairo.h:1403: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
    /usr/include/cairo/cairo.h:1406: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
    /usr/include/cairo/cairo.h:1409: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
    /usr/include/cairo/cairo.h:1425: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1428: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1432: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1435: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1439: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1443: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_t’
    /usr/include/cairo/cairo.h:1446: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1449: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1489: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_pattern_type_t’
    /usr/include/cairo/cairo.h:1492: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1497: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1503: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1507: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1534: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1537: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_extend_t’
    /usr/include/cairo/cairo.h:1549: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1552: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_filter_t’
    /usr/include/cairo/cairo.h:1557: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1563: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1566: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1570: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1574: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1578: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1581: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1584: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1587: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘cairo_status_t’
    /usr/include/cairo/cairo.h:1590: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1595: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1599: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/include/cairo/cairo.h:1604: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    In file included from audio.c:28:
    ./guacamole/client.h:46: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘struct’
    cc1: warnings being treated as errors
    ./guacamole/client.h:92: warning: struct has no members
    audio.c: In function ‘guac_audio_stream_alloc’:
    audio.c:46: error: ‘guac_client_info’ has no member named ‘audio_mimetypes’
    audio.c:48: error: ‘guac_client_info’ has no member named ‘audio_mimetypes’
    make[2]: *** [libguac_la-audio.lo] Error 1
    make[2]: Leaving directory `/root/guacamole-server-0.9.9/src/libguac’
    make[1]: *** [all-recursive] Error 1
    make[1]: Leaving directory `/root/guacamole-server-0.9.9′
    make: *** [all] Error 2
    [root@gateway guacamole-server-0.9.9]#

    Reply
    • @Joe,
      I came back to this article to reply to another comment and thought of something that may be helpful if you’re still interested in setting up guacamole. You mentioned you were trying to install the program in an old 32-bit machine. Just in case you have it and want to give it yet another try, you may want to consider installing the 32-bit version of CentOS 7 (see https://seven.centos.org/2015/10/centos-linux-7-32-bit-x86-i386-architecture-released/), which was released not too long ago. I haven’t tested this myself so I can’t guarantee it will work, but it’s worth the shot. Maybe set it up in a VM with the same characteristics as your 32-bit machine first?

      Reply
  27. root@bld-puppet:~# guacd[24988]: INFO: Guacamole proxy daemon (guacd) version 0.9.9 started
    guacd[24988]: ERROR: Unable to bind socket to any addresses.

    Any idea??

    Reply
    • @Ravi,
      Please check your guacamole.properties and user-mapping.xml files. Post them here if you want me to take a look.
      After that:
      1) Kill the guacd process (most likely you already started it without noticing and it’s already running, which may explain why it refuses to bind the socket to an address).
      ps -ef | grep guacd | grep -v grep
      2) Restart Tomcat
      3) Launch guacd again
      Let us know how it goes.
      will return the PID

      Reply
  28. Guacamole has more sophisticated installation capabilities that also implement & utilize mysql, nginx. If you build/install xrdp onto linux desktop environments you can also remote desktop via a browser to get a linux desktop.

    Reply
    • @bmullan – you’re right. Guacamole has all those outstanding features and more. I had to keep this article simple as an introduction to Guacamole. But that is the reason why, in the Summary section, I advised readers to check out the official website to learn more.

      Reply

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