Hello list!

Trying to install melodic using the recipe from http://wiki.ros.org/melodic/Installation/Source using current debian/testing/buster. I only added --os=debian:buster to the rosdep command. All three variants fail in the same way.

The catkin_make isolated for the bare bones variant ends in:

<== Finished processing package [8 of 54]: 'cmake_modules'

==> Processing catkin package: 'class_loader'
        ......

-- Found the following Boost libraries:
--   thread
--   chrono
--   system
--   date_time
--   atomic
CMake Error at /home/sietse/ros_catkin_ws/devel_isolated/class_loader/share/class_loader/cmake/class_loaderConfig.cmake:148 (message):
  Project 'class_loader' tried to find library '-lpthread'.  The library is
  neither a target nor built/installed properly.  Did you compile project
  'class_loader'? Did you find_package() it before the subdirectory
  containing its code is included?
Call Stack (most recent call first):
  /home/sietse/ros_catkin_ws/install_isolated/share/catkin/cmake/catkinConfig.cmake:76 (find_package)
  test/CMakeLists.txt:4 (find_package)


-- Configuring incomplete, errors occurred!

It seems that is a problem with the boost library in this context. The CMakeError.log file reports the following:

Run Build Command:"/usr/bin/make" "cmTC_50014/fast"
/usr/bin/make -f CMakeFiles/cmTC_50014.dir/build.make CMakeFiles/cmTC_50014.dir/build
make[1]: Entering directory '/home/sietse/ros_catkin_ws/build_isolated/class_loader/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_50014.dir/CheckSymbolExists.cxx.o
/usr/bin/c++     -o CMakeFiles/cmTC_50014.dir/CheckSymbolExists.cxx.o -c /home/sietse/ros_catkin_ws/build_isolated/class_loader/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx
Linking CXX executable cmTC_50014
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_50014.dir/link.txt --verbose=1
/usr/bin/c++       CMakeFiles/cmTC_50014.dir/CheckSymbolExists.cxx.o  -o cmTC_50014 
/usr/bin/ld: CMakeFiles/cmTC_50014.dir/CheckSymbolExists.cxx.o: in function `main':
CheckSymbolExists.cxx:(.text+0x1b): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
make[1]: *** [CMakeFiles/cmTC_50014.dir/build.make:87: cmTC_50014] Error 1
make[1]: Leaving directory '/home/sietse/ros_catkin_ws/build_isolated/class_loader/CMakeFiles/CMakeTmp'
make: *** [Makefile:121: cmTC_50014/fast] Error 2

File /home/sietse/ros_catkin_ws/build_isolated/class_loader/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:
/* */
#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
}

The library is of course installed on this system. Please note that this worked about 2 months ago on this system, with older libraries, such as libboost.

Is there a simple solution to this problem, or is melodic not yet ready for this?

Thanks in advance, Sietse

Preparing to unpack .../fontconfig_2.13.1-2+b1_arm64.deb ...
Unpacking fontconfig (2.13.1-2+b1) ...
dpkg: error processing archive /var/cache/apt/archives/fontconfig_2.13.1-2+b1_arm64.deb (--unpack):
 trying to overwrite '/usr/bin/fc-cache', which is also in package fontconfig-utils 2.12.6-r0
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)

sudo dpkg -i --force-overwrite /var/cache/apt/archives/fontconfig_2.13.1-2+b1_arm64.deb