I try to build LibreDWG for my Ubuntu 20 x86_64 using [instruction](https://wiki.freecadweb.org/FreeCAD_and_DWG_Import):
git clone https://git.savannah.gnu.org/git/libredwg.git
cd libredwg
mkdir build
cd build
cmake ..
make
make install (or use checkinstall, or simply locate & copy the dwg2dxf utility to your executables path, it will be then autodetected by FreeCAD)

But there is error during building:
_[ 25%] Building C object CMakeFiles/redwg.dir/src/in_json.c.o
/home/a/snap/freecad/common/libredwg/src/in_json.c:54:10: fatal error: ../jsmn/jsmn.h: No such file or directory
   54 | #include "../jsmn/jsmn.h"
      |          ^~~~~~~~~~~~~~~~
compilation terminated._

Looks like I forgot install some dependents on my system. But I want to say that it will be perfect if buildsystem checked which dependents are not is user's system now, istn't it?
LibreDWG build on Ubuntu 20
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : LibreDWG build on Ubuntu 20
Issue date:

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I try to build LibreDWG for my Ubuntu 20 x86_64 using [instruction](https://wiki.freecadweb.org/FreeCAD_and_DWG_Import):
git clone https://git.savannah.gnu.org/git/libredwg.git
cd libredwg
mkdir build
cd build
cmake ..
make
make install (or use checkinstall, or simply locate & copy the dwg2dxf utility to your executables path, it will be then autodetected by FreeCAD)

But there is error during building:
_[ 25%] Building C object CMakeFiles/redwg.dir/src/in_json.c.o
/home/a/snap/freecad/common/libredwg/src/in_json.c:54:10: fatal error: ../jsmn/jsmn.h: No such file or directory
   54 | #include "../jsmn/jsmn.h"
      |          ^~~~~~~~~~~~~~~~
compilation terminated._

Looks like I forgot install some dependents on my system. But I want to say that it will be perfect if buildsystem checked which dependents are not is user's system now, istn't it?
--- end body ---
