Installation instructions for CentOS7

[NicolasRouquette]

Building ET on CentOS7 is tricky.

First, the cmake utility is too old (2.8) so we have to install cmake3 explicitly:

yum -y install epel-release
yum install cmake3

(found this tip here: https://www.heliocastro.info/?p=238#comment-5624)

Next, building failed:

cmake3 ../
-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Could NOT find GFLAGS (missing: GFLAGS_INCLUDE_DIR GFLAGS_LIBRARY) 
CMake Error at /usr/share/cmake3/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
  Could NOT find Protobuf (missing: Protobuf_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/share/cmake3/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake3/Modules/FindProtobuf.cmake:543 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:44 (find_package)

-- Configuring incomplete, errors occurred!
See also "/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeOutput.log".
See also "/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeError.log".

Here's the error log:

Determining if the pthread_create exist failed with the following output:
Change Dir: /home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_e3e96/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_e3e96.dir/build.make CMakeFiles/cmTC_e3e96.dir/build
gmake[1]: Entering directory `/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e3e96.dir/CheckSymbolExists.c.o
/usr/bin/cc    -o CMakeFiles/cmTC_e3e96.dir/CheckSymbolExists.c.o   -c /home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_e3e96
/usr/bin/cmake3 -E cmake_link_script CMakeFiles/cmTC_e3e96.dir/link.txt --verbose=1
/usr/bin/cc      -rdynamic CMakeFiles/cmTC_e3e96.dir/CheckSymbolExists.c.o  -o cmTC_e3e96 
CMakeFiles/cmTC_e3e96.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text+0x16): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
gmake[1]: *** [cmTC_e3e96] Error 1
gmake[1]: Leaving directory `/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp'
gmake: *** [cmTC_e3e96/fast] Error 2

File /home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_create
  return ((int*)(&pthread_create))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_0f3b9/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_0f3b9.dir/build.make CMakeFiles/cmTC_0f3b9.dir/build
gmake[1]: Entering directory `/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_0f3b9.dir/CheckFunctionExists.c.o
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_0f3b9.dir/CheckFunctionExists.c.o   -c /usr/share/cmake3/Modules/CheckFunctionExists.c
Linking C executable cmTC_0f3b9
/usr/bin/cmake3 -E cmake_link_script CMakeFiles/cmTC_0f3b9.dir/link.txt --verbose=1
/usr/bin/cc  -DCHECK_FUNCTION_EXISTS=pthread_create    -rdynamic CMakeFiles/cmTC_0f3b9.dir/CheckFunctionExists.c.o  -o cmTC_0f3b9 -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
gmake[1]: *** [cmTC_0f3b9] Error 1
gmake[1]: Leaving directory `/home/rouquett/tools/EternalTerminal/build/CMakeFiles/CMakeTmp'
gmake: *** [cmTC_0f3b9/fast] Error 2

[MisterTea]

It looks like you are missing gflags and protobuf. IIRC on centos the packages are google-gflags and protobuf-devel . Please add to the README so future people know how to compile on centos

[NicolasRouquette]

@MisterTea Can you please be more specific about what you're suggesting?

[MisterTea]

sudo yum install protobuf-devel protobuf-compiler gflags-devel libsodium-devel libutempter-devel

Then rerun cmake.

[NicolasRouquette]

Thanks, that worked.

Unfortunately, I can't use et because our CentOS-based VM is in the GovCloud where we have a mandatory banner on login; so all I get is:

Error in authentication with etserver: Error:  Connection error communicating with et deamon: No such file or directory.
, please make sure you don't print anything in server's .bashrc/.zshrc

[MisterTea]

That's fixed in master. What are you using for a client? On mac, you can "brew install --HEAD et" to get master branch

[NicolasRouquette]

I'm running on Ubuntu 18.04 LTS

I followed these instructions:

sudo add-apt-repository ppa:jgmath2000/et
sudo apt-get update
sudo apt-get install et

Should I use something else?

[MisterTea]

Yep, you should build from source using latest master to support logins with banners.

…

On Mon, Apr 1, 2019 at 2:10 PM Nicolas Rouquette ***@***.***> wrote: I'm running on Ubuntu 18.04 LTS I followed these instructions: sudo add-apt-repository ppa:jgmath2000/et sudo apt-get update sudo apt-get install et Should I use something else? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#180 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AASuvwx7TQCBQI-98W7deESV_qGIqHFoks5vcnWtgaJpZM4cT510> .

[NicolasRouquette]

Argh... on ubuntu 18.04 LTS, I couldn't build:

sudo apt-get install cmake

then:

cmake ../
-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found GFLAGS: /usr/include  
CMake Warning at /usr/share/cmake-3.10/Modules/FindProtobuf.cmake:455 (message):
  Protobuf compiler version doesn't match library version 3.0.0
Call Stack (most recent call first):
  CMakeLists.txt:44 (find_package)


-- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found version "3.0.0") 
-- Found sodium: /usr/lib/x86_64-linux-gnu/libsodium.so  
-- Found UTempter: /usr/include  
-- Configuring done
-- Generating done
-- Build files have been written to: /opt/local/imce/github.utils/EternalTerminal/build

Then:

 make
CMakeFiles/generated-code.dir/build.make:63: *** target pattern contains no '%'.  Stop.
CMakeFiles/Makefile2:179: recipe for target 'CMakeFiles/generated-code.dir/all' failed
make[1]: *** [CMakeFiles/generated-code.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

[NicolasRouquette]

line 63 of CMakeFiles/generated-code.dir/build.make is the 2nd line below:

ET.pb.cc: ../proto/ET.proto                                                                                                                                            
ET.pb.cc: ../protobuf::protoc                                                                                                                                          
        @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --blue --bold --progress-dir=/opt/local/imce/github.utils/EternalTerminal/build/CMakeFiles --progress-\
num=$(CMAKE_PROGRESS_1) "Running C++ protocol buffer compiler on proto/ET.proto"                                                                                       
        protobuf::protoc --cpp_out=/opt/local/imce/github.utils/EternalTerminal/build -I /opt/local/imce/github.utils/EternalTerminal/proto /opt/local/imce/github.uti\
ls/EternalTerminal/proto/ET.proto        

[MisterTea]

"Protobuf compiler version doesn't match library version 3.0.0"

That sounds bad. Can you run "ccmake ../" and see what the difference is between protobuf and protobuf compiler?

[TraceyC77]

On a related note, the installation documentation on the main Download page https://eternalterminal.dev/download/ are out of date in respect to the instructions on https://github.com/MisterTea/EternalTerminal

[MisterTea]

@NicolasRouquette were you able to get the protobuf issue resolved? It looks like compiling in centos works

[salemhilal]

For what it's worth, the installation instructions now in the README were enough for me to get the service running on CentOS 7. My local client (mac osx) hangs still when trying to connect (in a hard, non-killzble way), and I'm not sure if that's related or not.