Error when building with ninja

[junaire]

Describe the bug (must be provided)
Hello, This project is awesome and I'm really interested in it! But when I try to build it, I ran into trouble.

I found that I can't build it with ninja.(Maybe we have not support it now?)

Your Environments (must be provided)

• OS: Linux 5.11.0-37-generic #41-Ubuntu x86_64 GNU/Linux
• Compliler: g++ (Ubuntu 10.3.0-1ubuntu1) 10.3.0
• CPU: Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
• Commit id cd2ecb922b
• cmake version 3.18.4
• ninja version 1.10.1

How To Reproduce(must be provided)

1. mkdir build && cd build
2. cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=YES ../

Expected behavior

build success

Additional context

CMake Error:
  Running

   '/usr/bin/ninja' '-C' '/home/jun/dev/cpp-projects/nebula/build' '-t' 'cleandead'

  failed with:

   ninja: error: build.ninja:207: bad $-escape (literal $ must be written as $$)
    COMMAND = cd /home/jun/dev/cpp-projects/nebula/build && $(MAKE) instal...
                                                            ^ near here



CMake Error:
  Running

   '/usr/bin/ninja' '-C' '/home/jun/dev/cpp-projects/nebula/build' '-t' 'recompact'

  failed with:

   ninja: error: build.ninja:207: bad $-escape (literal $ must be written as $$)
    COMMAND = cd /home/jun/dev/cpp-projects/nebula/build && $(MAKE) instal...
                                                            ^ near here



CMake Generate step failed.  Build files cannot be regenerated correctly.

Also, I have found robotology/robotology-superbuild/issues/83 with same issue, and they fix this in 68a218225804.

I guess it is a good way to start some contribution, and I'm willing to submit a patch for you(of course if it is a real bug...)

[darionyaphet]

CMake Error: CMake was unable to find a build program corresponding to "Ninja". 
CMAKE_MAKE_PROGRAM is not set.

it seems should set the CMAKE_MAKE_PROGRAM flag.

[junaire]

CMake Error: CMake was unable to find a build program corresponding to "Ninja". 
CMAKE_MAKE_PROGRAM is not set.

it seems should set the CMAKE_MAKE_PROGRAM flag.

Hello, I haven't run into this problem. Do you have ninja installed in your machine?

You can install ninja in ubuntu by running:

sudo apt install ninja-build