ttcn3_makefilegen -l -f *.ttcn *.c* -e myExample  && make 

├── hello_world.tpd
├── MyExample2.cfg
├── MyExample.cfg
├── README.md
└── src
    ├── hello_world.ttcn
    ├── MyExample.ttcn
    ├── PCOType.cc
    └── PCOType.hh 

<?xml version="1.0" encoding="UTF-8"?>
<TITAN_Project_File_Information version="1.0">
  <ProjectName>Hello_world</ProjectName>
  <Folders>
    <FolderResource projectRelativePath="src" relativeURI="src"/>
  </Folders>
  <Files>
    <FileResource projectRelativePath="src/PCOType.cc" relativeURI="src/PCOType.cc"/>
    <FileResource projectRelativePath="src/PCOType.hh" relativeURI="src/PCOType.hh"/>
    <FileResource projectRelativePath="src/hello_world.ttcn" relativeURI="src/hello_world.ttcn"/>
    <FileResource projectRelativePath="src/MyExample.ttcn" relativeURI="src/MyExample.ttcn"/>
  </Files>
  <ActiveConfiguration>Default</ActiveConfiguration>
  <Configurations>
    <Configuration name="Default">
      <ProjectProperties>
        <MakefileSettings>
          <generateInternalMakefile>true</generateInternalMakefile>
          <GNUMake>true</GNUMake>
          <incrementalDependencyRefresh>true</incrementalDependencyRefresh>
          <targetExecutable>bin/MyExample</targetExecutable>
        </MakefileSettings>
        <LocalBuildSettings>
          <workingDirectory>bin</workingDirectory>
        </LocalBuildSettings>
      </ProjectProperties>
    </Configuration>
  </Configurations>
</TITAN_Project_File_Information>

ttcn3_makefilegen -f -l -d -t hello_world.tpd 

ttcn3_makefilegen -f -l -d -t hello_world.tpd 
TPD file `hello_world.tpd' validated successfully with schema file `/usr/local/TTCNv3/etc/xsd/TPD.xsd'
Working directory `bin' in project `/home/dr/ttcn3_projects/hello' does not exist, trying to create it...
Working directory created
ttcn3_makefilegen: warning: No source files were given for the Makefile
Data used for Makefile generation:
  TTCN-3 project name: Hello_world
  TTCN-3 modules: (0 pcs.)
  TTCN-3 preprocessing: no
  All local TTCN-3 modules follow the naming convention: yes
  ASN.1 modules: (0 pcs.)
  All local ASN.1 modules follow the naming convention: yes
  User C/C++ modules: (0 pcs.)
  All local C/C++ header files follow the naming convention: yes
  All local C/C++ source files follow the naming convention: yes
  Other files: (1 pcs.)
    File name: Makefile
  Use pre-compiled files from central storage: no
  Working directory: /home/dr/ttcn3_projects/hello/bin
  GNU make: yes
  Execution mode: parallel
  Name of executable: MyExample
  Output file: Makefile
  Force overwrite: yes
  Use function test runtime: no
  Use dynamic linking: yes
  Code splitting mode: <unknown>
  Code coverage file: <unknown>
Generating Makefile skeleton...
Makefile skeleton was generated.

ttcn3_makefilegen -f -l -d -t hello_world.tpd
TPD file `hello_world.tpd' validated successfully with schema file `/home/ethgasz/TTCNv3/etc/xsd/TPD.xsd'
Working directory `bin' in project `/mnt/c/Users/ethgasz/Downloads/tpd' does not exist, trying to create it...
Working directory created
Data used for Makefile generation:
  TTCN-3 project name: Hello_world
  TTCN-3 modules: (2 pcs.)
    Module name: MyExample
      File name: MyExample.ttcn
      Follows the naming convention: yes
    Module name: hello_world
      File name: hello_world.ttcn
      Follows the naming convention: yes
  TTCN-3 preprocessing: no
  All local TTCN-3 modules follow the naming convention: yes
  ASN.1 modules: (0 pcs.)
  All local ASN.1 modules follow the naming convention: yes
  User C/C++ modules: (1 pcs.)
    File prefix: PCOType
      Header file: PCOType.hh
      Header file has .hh or .hpp suffix: yes
      Source file: PCOType.cc
      Source file has .cc or .cpp suffix: yes
      Object file: PCOType.o
  All local C/C++ header files follow the naming convention: yes
  All local C/C++ source files follow the naming convention: yes
  Other files: (1 pcs.)
    File name: Makefile
  Use pre-compiled files from central storage: no
  Working directory: /mnt/c/Users/ethgasz/Downloads/tpd/bin
  GNU make: yes
  Execution mode: parallel
  Name of executable: MyExample
  Output file: Makefile
  Force overwrite: yes
  Use function test runtime: no
  Use dynamic linking: yes
  Code splitting mode: <unknown>
  Code coverage file: <unknown>
Generating Makefile skeleton...
Makefile skeleton was generated.

 ls -l
total 8
lrwxrwxrwx 1 ethgasz ethgasz   55 Nov 19 13:03 hello_world.ttcn -> /mnt/c/Users/ethgasz/Downloads/tpd/src/hello_world.ttcn
-rwxrwxrwx 1 ethgasz ethgasz 5900 Nov 19 13:03 Makefile
lrwxrwxrwx 1 ethgasz ethgasz   53 Nov 19 13:03 MyExample.ttcn -> /mnt/c/Users/ethgasz/Downloads/tpd/src/MyExample.ttcn
lrwxrwxrwx 1 ethgasz ethgasz   49 Nov 19 13:03 PCOType.cc -> /mnt/c/Users/ethgasz/Downloads/tpd/src/PCOType.cc
lrwxrwxrwx 1 ethgasz ethgasz   49 Nov 19 13:03 PCOType.hh -> /mnt/c/Users/ethgasz/Downloads/tpd/src/PCOType.hh