why do we always fetch in findktx.cmake

[fiausch]

in attatchments/CMake/findktx.cmake

lines 17-25:

if(UNIX AND NOT APPLE)
  # On Linux, we assume KTX is not installed and proceed directly to fetching it
  set(KTX_FOUND FALSE)
else()
  # On non-Linux platforms, try to find KTX using pkg-config first
  find_package(PkgConfig QUIET)
  if(PKG_CONFIG_FOUND)
    pkg_check_modules(PC_KTX QUIET ktx libktx ktx2 libktx2)
  endif()

on line 18:

# On Linux, we assume KTX is not installed and proceed directly to fetching it
why would we do this?
I edited those lines out and I save a solid minute on compile time (at least when i choose to clear the build/ directory and then make)

[SaschaWillems]

Thanks for bringing this up. Handling things different on Linux doesn't seem to make much sense, so we'll adjust accordingly.