Can't compile CppUTest with GCC when `-Werror=missing-include-dirs` is set

[fgrie]

Hi,
it seems that CppUTest is not able to compile with GCC when -Werror=missing-include-dirs is set, as the directory include/Platforms/Gcc does not exist:

cc1plus.exe: error: C:/mydir/.build/gcc-x86_64-w64-mingw32/Release/_deps/cpputest-src/src/CppUTest/../../include/Platforms/Gcc: No such file or directory [-Werror=missing-include-dirs]

(built with Windows 10, GCC from w64devkit 1.17.0, cmake 3.27.4)

As far as I see, there are two possible solutions:

1. Remove the missing directory from the following places:

• cpputest/scripts/templates/ProjectTemplate/ProjectMakefile

  Line 35 in 49bae19

  $(CPPUTEST_HOME)/include/Platforms/Gcc\

• cpputest/platforms/Eclipse-Cygwin/.project

  Line 1188 in 49bae19

  <name>include/Platforms/Gcc</name>

• Find a workaround for CMake:

  cpputest/src/CppUTest/CMakeLists.txt

  Line 58 in 49bae19

  $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/../../include/Platforms/${CPPUTEST_PLATFORM}>

• Possible workaround for CMake: only reffering to this directory if it exists

2. Create a dummy folder include/Platforms/Gcc with an empty .gitkeep file in it (to ensure that it is kept by git)

• Do this for the other major platforms mentioned in

  cpputest/CMakeLists.txt

  Line 68 in 49bae19

  set(CPPUTEST_PLATFORM armcc)

  as well