Object files are created outside of "objects" directory in case source file paths start with a ".."

[mthiede]

If build dir is "./build", object files should be in "./build/objects".
If a source file is "../src/filex.c", the object file will be created in "./build/src/" instead of "./build/objects/src/".
It is probably necessary to protect against name clashes within the "objects" directory. I.e. if several "src" directories are referenced via relative paths, all starting with src (../src, ../../src, etc.) and containing files with the same names.

[gizmomogwai]

example is needed

[gizmomogwai]

the example in examples/strange_dirs shows the problem. after building the project the objects of lazylib are in build/objects/src/* instead of build/objects/lazylib/???

├── build
│   ├── exes
│   │   └── main.exe
│   ├── libs
│   │   └── liblazy.a
│   └── objects
│       ├── main
│       │   ├── main.cpp.o
│       │   └── main.cpp.o.d
│       └── src
│           ├── test.cpp.o
│           └── test.cpp.o.d
├── lazyLib
│   └── project.rb
├── main
│   ├── main.cpp
│   └── project.rb
├── Rakefile.rb
└── src
    └── test.cpp

[gizmomogwai]

current version works (see examples/strange_dirs)

  .
  ├── build
  │   ├── libs
  │   │   └── liblazy.a
  │   ├── main.exe
  │   └── objects
  │       ├── lazy
  │       │   └── _
  │       │       └── src
  │       │           ├── test.o
  │       │           └── test.o.d
  │       └── main
  │           ├── main.o
  │           └── main.o.d
  ├── lazyLib
  │   └── project.rb
  ├── main
  │   ├── main.cpp
  │   └── project.rb
  ├── Rakefile.rb
  └── src
      └── test.cpp